D:市场资料技术资料WorkNC 2017 R2 Word Files修改末尾原版...

Table Of Contents

Copyright 2017 © Sescoi International I WNC17R2_EN_2D - 2D Toolpaths

Table Of Contents

1 - Introduction 2

1.1 - Training Guide Objectives....................................................................................................2

1.2 - Workzones..............................................................................................................................2

1.3 - Creating a Rib Axis.............................................................................................................15

1.4 - Creating a Text along a Curve..........................................................................................17

1.5 - Creating a Text for Engraving Purposes.........................................................................20

2 - 3-Axis Roughing Toolpaths 23

2.1 - Global Rough/Rerough...................................................................................................... 23

2.2 - Initializing the Stock Model and Calculating the Roughing Toolpath..........................40

2.3 - Displaying Toolpaths.......................................................................................................... 43

2.4 - Opening the Toolpath Parameters Menu of a Toolpath................................................45

2.5 - Updating the Stock Model..................................................................................................45

2.6 - Reroughing...........................................................................................................................47

3 - Curve Machining Toolpaths 50

3.1 - Curve Machining Z Movement..........................................................................................50

3.2 - Pocketing..............................................................................................................................55

3.3 - Rib Machining......................................................................................................................60

3.4 - Facing................................................................................................................................... 63

3.5 - Tangent to Curve................................................................................................................ 64

3.6 - Cutter Compensation..........................................................................................................76

3.7 - On-Curve Engraving...........................................................................................................83

3.8 - Curve Remachining............................................................................................................ 88

3.9 - Chamfering...........................................................................................................................94

4 - Flats and Walls Machining Toolpaths 103

4.1 - Manual 2D..........................................................................................................................103

4.2 - Die Flats Roughing...........................................................................................................108

4.3 - Die Flats Finishing............................................................................................................ 116

4.4 - Ignoring Surfaces that hide the Surfaces to Machine.................................................128

4.5 - Wall Plunge Machining.................................................................................................... 131

Table Of Contents �XE "Training Guide Objectives" �1.1 - Training Guide O

Copyright 2017 © Sescoi International 2 WNC17R2_EN_2D - 2D Toolpaths

1 - Introduction

1.1 - Training Guide ObjectivesThis manual presents the basic key concepts concerning WorkNC features. The particular examples given in the manualmay not concern all users or applications of WorkNC. The main goal of this manual is to provide users with the tools(knowledge and concepts) that may be applied to specific problems that they may encounter when working with the 2 ½-axis toolpaths of the application

At the end of the training session, you should be able to:

Create a rib axis

Add a text on a part and convert it into curves

Create a Workzone

Program Roughing toolpaths

Program Curve Machining toolpaths

Program Flats and Walls Machining toolpaths

Parts and Workzones used in this Training Guide

CAD Files WorkzonesPlate_cover.xdw Wall_machining Flats_walls_machiningCorner_smoothing.xdw Pumpe_engravingPocket_holes.xdw Die_flats_machiningAdjust_fillet.xdw Plate_wingMulti-sided_part.xdw Pump_bodyPump_body.igs Compensation

This training guide is not a comprehensive manual. For more help you can go to our Online Help or read other trainingmanuals.

1.2 - WorkzonesA workzone is the directory or folder created by the application to store the surface database and toolpath files for each setof surfaces.

You can create workzones from the New/Open dialog box. They represent a “working” environment where you canvisualize, orientate and analyze parts. You can also define machining strategies by creating toolpaths and create points,curves and views that might be helpful for some toolpaths.

There are 2 ways of creating a workzone:

You can use the New Workzone function to create a workzone directly in the CAM mode by selecting an existing CADfile (WNC, IGS, STL, etc.).

You can create/open a CAD file (XDW, IGS, DXF, etc.), modify it and create a workzone from the CAD mode.

1.2.1 - Creating a New Workzone in the CAM Mode

This option allows you to create a workzone from an existing CAD file.

Table Of Contents �XE "Training Guide Objectives" �1.1 - Training Guide O


CAD File Edition

It does not allow you to modify your CAD file.

On the left side of the New/Open dialog box, 2 CAM functions allow you to create a new workzone or open an existing one.

1. Click on the New Workzone button.

The Create a Workzone dialog box is displayed:

Create a Workzone Dialog Box

2. Click on the icon next to the Workzone Name field.

This allows you to define a directory where your workzone will be saved.

The Select a Workzone dialog box is displayed:

Select a Workzone Dialog Box

The left side of the dialog box contains the default Windows shortcuts to browse your local disk. At the top of this shortcutlist, you can find WorkNC shortcuts.

�XE "Introduction" �1 - Introduction �XE "Training Guide Objectives" �1.1 - Training Guide O


Clicking on the WorkNC entry allows you to display the root directory of the application in the center part of the dialog box.The sub-entries allow to you access the Workzones, Sequences, Surfaces and Postprocessor Output directories.

1. Click on the Workzones entry on the left side of the dialog box.

This allows you to display the directory where your workzones are saved.

Workzone Location

The directory displayed by default is disk C. If you are equipped with a second hard disk, we recommendyou to store the workzone on the disk that is dedicated to personal data storage.

2. Select the disk you want to define for your workzone for example disk D.

3. Click on the New Folder button to create the directory where you want to stock your workzone (e.g. Workzones).

4. Click on the Open button.

5. Enter the name of you workzone in the File Name field.For our example, enter Training_test.

6. Click on the Select a Workzone button.

Workzone Directory and Name

Remember that no spaces should be used in the workzone directory or name.

CAD File Selection

1. Click on the Add button to select your CAD file.

The Open dialog box is displayed.

Open Dialog Box

The left side of the dialog box contains the default Windows shortcuts to browse your local disk. At the top of this shortcutlist, you can find WorkNC shortcuts.

2. Click on the Surfaces entry on the left side of the dialog box.

This allows you to display the Surface directory of the application.

�XE "Introduction" �1 - Introduction �XE "Workzones" �1.2 - Workzones


3. Open the XDW directory, then open the Training directory.

4. Select the CAD file that you want to open.For our example, select the pump_body.igs CAD file.

Note that you can filter the CAD file types by using the drop-down list in the bottom right-hand corner of the dialog box.

Open Dialog Box: CAD File Selected


6. If necessary, define the Offset Allowance by right clicking on the value of the Offset… field and entering your ownvalue.An Offset Allowance is an additional machining allowance applied to the surfaces activated from your CAD system.For our example, keep the default value.

Workzone Information and Configuration

1. Make sure that the appropriate Machining Type option is activated (Surface in our example). If not, click on the optionto select it.

2. If necessary, modify the Geometry Activation Parameters.

Scaling Factor: allows you to apply a scaling factor to the model before activation.Global Stock: allows you to define a global stock allowance over the whole of the part geometry.Tolerance: allows you to define the tolerance value to be applied during activation. The Default option allows you to restorethe default tolerance value when it has been modified.Final Allowance: allows you to define the absolute final allowance to which the part will be finished when activating orediting the part geometry. The application uses this parameter in association with individual toolpaths in order to reducecalculation times, especially on big parts.

3. If necessary, enter your name in the NC Programmer field of the Workzone Information section. You can also fill in theComment field.

5-Axis Activation

The Activate for 5-Axis Toolpaths option is activated by default. This option allows you to machine thecorresponding workzone in 5 axis according to your license codes.

4. For our training session, deactivate the workzone for 5-axis toolpaths.



Machining Context

You can click in the Use a Favorite Machining Context when creating Workzone drop-down list and selecta favorite Machining Context, if any. Refer to the Machining Context training guide or press the [F1] key touse the Online Help.

5. Make sure that the Load the Workzone After Creation option is activated. If not, check the corresponding box toactivate this option.

6. Activate the Automatic Surface Orientation Calculation option.

This option allows you to automatically orient surfaces towards the outside of the part. Orienting surfaces is very importantfor 5-axis toolpaths and view creation.

Create a Workzone: Parameters Defined

7. Click on the Create Workzone button.

Once the calculations are completed, the part selected is displayed with the Surface Orientation Tool.

Surface Orientation Tool

8. Click OK in the dialog box to validate the surface orientation.

The part is now displayed in the CAM mode.

1.2.2 - Creating a Workzone in the CAD Mode

You can view and/or modify your part in the CAD environment before creating a workzone and then working on it.



You can create your workzone from a new or from an existing CAD file.

On the left side of the New/Open dialog box, select the CAD function corresponding to your requirements:

Creating a New CAD File

You can create a new CAD File by clicking on the New CAD File button.

The description for this function is not given in this section since it deals with CAD training. This guide focuses on the CAMtraining only.

Opening a CAD File

1. In the New/Open dialog box, click on the Open CAD File button.

The Open dialog box is displayed.

Open Dialog Box

The left side of the dialog box contains the default Windows shortcuts to browse your local disk. At the top of this shortcutlist, you can find WorkNC shortcuts.Clicking on the WorkNC entry allows you to display the root directory of the application in the center part of the dialog box.

2. Click on the Surfaces entry on the left side of the dialog box.

This allows you to display the Surface directory of the application.

3. Open the XDW directory, then open the Training directory.

4. Select the CAD file that you want to open.For our example, select the plate_cover.xdw CAD file.

Note that you can filter the CAD file types by using the drop-down list in the bottom right-hand corner of the dialog box. Apreview of the selected file is displayed on the right side of the dialog box.



Open Dialog Box: File Selection


Your CAD file is displayed in the CAD mode of the user interface.

CAD Mode Overview

CAD Mode Overview: Toolbar Descriptions

1 CAD Function Toolbar 2 User Input Dialog Box

3 Object Snap Menu 4 Axis Rotation

5 Show/Hide Entities



Creating the Workzone

1. Click on WorkNC in the text menu bar and select Create Workzone or click on the icon.

CAD Mode: Create Workzone

The Create a Workzone dialog box is displayed:

Create a Workzone Dialog Box: from CAD File

2. Click on the New Selection button.

Now, you have to select the surfaces you want to include in the workzone.

Surface Selection

For your selection, you can click each surface, draw a rectangle selection or press the [Ctrl] + [A] keys onyour keyboard to select all part surfaces. This option will be the option that is used in this training exercise.

3. Press the [Ctrl] + [A] keys to select all the surfaces.

The selected surfaces appear in purple in the Viewing Area.



CAD Mode: Surfaces Selected for Workzone Creation

4. Click on the icon in the top right-hand corner of the Viewing Area to validate your selection.

Surface Selection: Validate or Cancel

You can also validate your selection by right clicking on the Viewing Area. You can cancel your selectionby clicking on the icon.

The Create a Workzone dialog box is displayed again and you can see that your CAD file has been added to theGeometries tab.

5. Define a name for your workzone.

6. Make sure that the Load the Workzone After Creation option is activated.

7. Deactivate the workzone for 5-axis toolpaths and activate the Automatic Surface Orientation Calculation option.

Note that you have the possibility to include all CAD entities from all layers and make them available in the Preparationmode (Include Unselected Entities option). Do not activate this option for our training session.

8. Click on the Create Workzone button.

9. Once the calculations are completed, validate the surface orientation.

Your workzone is displayed in the CAM mode.

1.2.3 - Defining Default Directories for Workzones and CAD Files

Workzone Default Directory

This directory is defined in the WorkNC Setup dialog box.



1. Click on the Windows Start button.

2. Click on All Programs.

3. Click on the WorkNC folder.

4. Click on the Utilities folder.

5. Click on WNCConfig.The WorkNC Setup dialog box is displayed. TheEnvironment tab allows you to define the defaultdirectory for workzones.

6. Define the default workzone directory in the WorkzoneRoot Directory field.

7. Click on the Apply button.

8. Click on the Exit button.

Note that you need to restart the application to apply thechanges.

CAD Files Default Directories

The default directories for the different types of CAD files are defined in the Parameters dialog box. You can access thisdialog box once the application is opened.

1. Click on Settings/Enquiries in the text menu bar and select Software Configuration.

Settings/Enquiries Menu

The Parameters dialog box is displayed.

2. Click on the arrow next to Graphic User Interface Configuration on the left side of the dialog box.

3. Click on Default Paths.

The various default paths for each type of CAD file are displayed on the right side of the dialog box.

4. Use the icons to modify these paths.



Parameters Dialog Box: Setting Default Directories for CAD Files

5. Click the Apply button.

6. Click OK to exit the dialog box.

1.2.4 - Opening/Closing Workzones and CAD Files

Opening a Workzone

In the New/Open dialog box, if no workzone is displayed in the Recent Workzones tab, or if you want to open a workzonethat does not appear under this tab, you have the possibility to search for a particular workzone. To do so, proceed asfollows:

1. Click on the Open Workzone button in the New/Open dialog box.

The Select a Workzone dialog box is displayed.

2. Click on the Workzones entry on the left side of the dialog box.

3. Select the workzone that you want to open.

A preview of the geometry contained in the workzone is displayed on the right side of the dialog box. You can also seeinformation about the version used to create this workzone, the NC programmer name, etc.



Selected Workzone and Preview

4. Click on the Select a Workzone button.

Recent Workzone/CAD Files Tabs

Once workzones/CAD files have been opened in the application, they will be displayed in the Recent Workzones or RecentCAD Files tabs the next time you start the application.

Recent Workzones Tab

You can open workzones/CAD files directly from these tabs:

1. Click on the workzone/CAD file image to select it.

2. Click on the Load button.

Double Click

You can also open workzones/CAD files by double clicking on them in the Recent Workzones/CAD Filestabs.

Opening Workzones and CAD Files by Drag & Drop

You can open workzones or CAD files by dragging them from a Windows explorer and dropping them onto the userinterface of the application.



1. Once you have started the application, click on the Cancel button in the New/Open dialog box to hide it.

2. Open a Windows explorer and browse your workzone/CAD file directory.

3. Drag and drop your CAD file/workzone onto the gray area of the user interface.

Drag and Drop a CAD File Drag and Drop a Workzone

The CAD file/Workzone is automatically opened in the CAD or CAM mode of the application.

New/Open Dialog Box

To display the New/Open dialog box again, click on the icon in the top left-hand corner of the userinterface.

Closing a Workzone/CAD File

You can close a workzone/CAD file in 2 different ways:

1. Click on the icon in the top left-hand corner of the user interface.

2. Click on File in the text menu bar and select Close.

File Menu (CAM Mode): Close



1.3 - Creating a Rib Axis

This function of the Preparation mode allows you to create a median NURBS curvebetween two groups of curves or surface boundaries in order to obtain a guide curvefor rib machining.

To illustrate this, we are going to use a workzone created from the plate_cover.xdwCAD file.

We are going to create Rib Axis so that we can machine the ribs of this part.

1. Create the workzone.

2. Click on the icon to activate the Preparation mode.

You can access this function from the Line Creation toolbar:

Let’s start by creating a rib axis for the two green ribs:

1. Press and hold down the mouse button on the icon.A context menu is displayed with the available functions.Note that you can release the mouse button once the menu is displayed.

Rib Axis

2. Click on Rib Axis.

3. Select the right-hand group of curves/surface boundaries.Click on the bottom surface boundaries and validate.



Selecting Right-Hand Group of Curves

4. Select the left-hand group of curves/surface boundaries and validate.

Selecting Left-Hand Group of Curves

The rib axis is automatically inserted:

Rib Axis Created

5. Repeat this procedure to create the rib axis for the second green rib.

Now let’s see how to create the rib axis for the red rib:

1. Activate the Rib Axis Creation function.

2. Select the right-hand group of curves/surface boundaries.Select the straight surface boundaries. Do not select the arc.

�XE "Introduction" �1 - Introduction �XE "Creating a Rib Axis" �1.3 - Creating a Rib Axis


Selecting Surface Boundaries

3. Right click to validate.

The application allows a curve/surface boundary gap tolerance of 0.01 mm. If the distance between two curves is greaterthan that tolerance, the Rib Axis – Filling the Gap dialog box will pop up allowing you to select in which way you want to fillthe gaps, either by a straight Segment, a Curve or not at all.

Rib Axis - Filling the Gaps

4. Click on the Segment button.

5. Repeat this procedure to select the left-hand group of curves/surface boundaries.

The application will then draw the median curve by filling the gaps according to your selection.

Now you can proceed to export these curves to the CAM mode:

1. Click on the icon.

2. Select the rib axes. Press and hold down the [Shift] key then click on one of the rib axes.


Moving Rib Axis to CAM Mode

4. Rename the Curve Set and click OK to validate.

The rib axis will be exported to the CAM mode as a new Curve Set.

We will see how to use this new curveset for rib machining later.

1.4 - Creating a Text along a CurveYou can position texts with respect to a curve (straight lines, circles, NURBS, ...).

You can access this function from the CAD and Preparation modes, and from the WorkNC CAD application. Here we aregoing to use it from the CAD mode.

To illustrate this, we are going to use the circle.xdw CAD file. It is a basic drawing with a circle curve.

�XE "Introduction" �1 - Introduction �XE "Creating a Rib Axis" �1.3 - Creating a Rib Axis


1. Press and hold down the mouse button on the icon on the left side of the user interface.

2. Click on Text on Path.

3. Select the curve (in our case the circle curve) on which you want to create the text and right click to validate.

The following dialog box is displayed:

Text on Curve Dialog Box

4. Enter the text.

5. Use the various icons and options (see below) to adjust your text position, size, etc.

6. In the Destination Layer section, specify where you want to save the text : in the current layer (use the icon to

modify the current layer), in a new layer ( icon) or in the active layer ( icon).For our example, select the Texts layer in the Destination Layer drop-down list..

7. Click OK to validate.

Text on Curve Example

Dialog Box Description

The drop-down list at the top of the dialog box allows you to select the font for your text.

�XE "Introduction" �1 - Introduction �XE "Creating a Text along a Curve" �1.4 - Creating a T


This icon allows you to change the color of the text. By default, the color will the color of thedestination layer.

These icons allow you to flip the text horizontally or vertically: you can use them to define the textdirection (from left to right or from right to left) as well as its position with respect to the curve.

These icons allow you to align the text (Left, Center, Right, Justify).

These icons allow you to position the text above the curve, in the curve or below the curve.

This icon allows you apply a uniform word distribution along the curve.

These icons allow you to change the font style of the text: bold, italic, underline or strikethrough.

These icons allow you to respectively define an outline text or a stroke text.

Text Size You can use the fields of this section to adjust the height and/or the width of the characters.

Text Offsetting You can use the fields of this section to move the text horizontally along the curve and/orvertically with respect to the curve.

Align to View Activating this option allows you to align the text orientation according to the current view.

Clicking on this icon allows you to select another text from the drawing and copy it on the currentcurve.

Clicking on this icon allows you to cut the current text and copy it on another curve you select.

Converting the Text into a Curve


2. Click on Text to Curves.

3. Select the text to convert.

The following dialog box is displayed.



Select Layer Dialog Box

4. Select the destination layer in the drop-down list, or use the icon to modify the current layer or the icon tocreate a new layer.

1.5 - Creating a Text for Engraving Purposes

1. To illustrate this, create a workzone from the plate_cover.xdw CAD file.

2. Create the following curve:

Curve for Text Creation

We are going to use the Preparation mode to create a text in the plate cover and convert it to a curve:


2. Click on Text on Path.

3. Select the curve on which you want to create the text and right click to validate.


Text on Curve Dialog Box

4. Enter your text in the dialog box, for example WorkNC.



5. Set the text parameters using the different options of the dialog box. For our example, position the text on the centerof the curve and set the text Height to 20.

Creating a Text along a Curve

6. Click OK to validate and exit the dialog box.

The text has been added to the drawing.

Now you can convert this text into a curve:


2. Click on Text to Curves.

3. Click on the text that you want to convert as requested by the system.


Now you can export the curves to the CAM mode:

1. Click on the icon.

2. Click on the curves to move them to the CAM mode.

Curve Selection

Since the text is exploded into multiple curves, press and maintain the [Shift] key of your keyboard andclick on curve. This will select all the curves of the text.


The Move Geometry to CAM dialog box is displayed.

�XE "Introduction" �1 - Introduction �XE "Creating a Text for Engraving Purposes" �1.5 - Cr


Move Geometry to CAM (Curves)

4. Activate the Closed option and if necessary, change the default name of the curve set.


The curves have been exported to the CAM mode.

We will see later how to use these curves for the On-Curve Engraving toolpath.



2 - 3-Axis Roughing ToolpathsRoughing is the preliminary stage of a machining job. At the end of the roughing stage, the workpiece should be in a statesuitable for a semi-finishing or a finishing toolpath.

The aim is to use relatively large cutters to remove large amounts of stock and to approximate the final shape of theworkpiece.

There are standard and specialized roughing toolpaths. This training guide will focus on standard roughing toolpaths.

2.1 - Global Rough/ReroughThis toolpath is designed for high torque milling machines capable of machining large amounts of stock with one singletoolpath.

The Toolpath Parameters menu of the Global Rough/Rerough toolpath, like all the toolpaths in the application, is dividedinto 2 sections:

Global Rough/Rerough: Standard and Specific Parameters

1 Standard parameters: common to all toolpaths. 2 Specific parameters: particular to each individual toolpath.

2.1.1 - Programming a Global Rough/Rerough Toolpath: Standard Parameters

MACHINING ZONE

This section allows you to define which areas you want to machine.



The machining zone for each toolpath can be specified as a rectangular window or as a rectangular view created by theuser.

A View is necessary if you want to machine with an inclined tool axis. A Window or a View can be limited in the horizontalplane by Boundary Curves or in the Z plane by a Machining Plane.

You can also restrict machining to certain surfaces using the Surface Selection function.

1. For our example, make sure that the Expand Window by option is activated.

2. Activate of the By Diam+Stock option.

The application expands the machining zone by adding the tool diameter (i.e. twice the Body Radius) and the StockAllowance, to ensure that all surfaces are fully machined.

CUTTER DETAILS

This section allows you to define the type of cutter, its dimensions and form or to choose a specific cutter from the ToolLibrary.

For our example, we are going to define the form and the dimensions of a new cutter.

You can define a standard or conical cutter and select the shape of the tip (Ball, Bull-nose or Flat).

All calculations are performed using the center of the cutter.

Ball End Cutter (R = Radius)

For a Ball-end cutter the following condition applies:

Cutter Radius + Stock Allowance + Part Offset Allowance (with activated Part Geometry) > 0.2 (0.008”)

Flat End Cutter (R = Radius, r = Corner Radius)

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Global Rough/Rerough" �2.1 - Global Rough/Rero


Bull Nose Cutter (R = Radius, r = Corner Radius)

All toolpaths can use cutters with a corner radius of 0 mm or inches but the following condition still applies:

Corner Radius + Stock Allowance + Part Offset Allowance (with activated Part Geometry) >= 0

A basic cutter can be defined directly in the Toolpath Parameters menu by selecting the appropriate tip shape and definingthe Body Radius and eventually the Corner Radius.

You can also define conic cutters. In the case of the Global Rough/Rerough toolpath, flat conic cutters are not allowed.

Correct cutter definition reduces the stock ‘stairs’ effect on inclined surfaces by corresponding to the shape of the part to bemachined.

Conic Cutter

Using conic cutters improves machine stability by reducing vibrations. Tool service life is prolonged and machining cyclesare reduced by elimination of stock steps leading to shorter re-roughing cycles.

Z-step Value

When using a conic cutter, the Z-step value must be inferior to the Corner Radius value.

1. Click on the button which indicates the current cutter dimensions and type.In our example, the button indicates: Bull-nose 5.000 (Body Radius) / 1.000 (Corner Radius).


Define Cutter Dialog Box



A preview of the tool is displayed in accordance with the parameters that you have just entered.

2. Click on the Type button, which displays the shape of the current cutter (Bull-nose Cutter in our example).


Select Cutter Type Dialog Box

3. Click on the Bull-nose button.

4. Click on the icon to validate.

5. Enter 60 in the Length filed.

6. Enter 32 in the Diameter field.

7. Enter 8 in the Corner Radius field.

8. Enter 20 in the Cutting Length field.

Define Cutter Dialog Box

In this dialog box, you can define further parameters for tools such as the shape and the length.

9. Define the Tool Number in the corresponding field, 1 in our example.

Tool Number

Defining a tool number is mandatory for concatenated postprocessing.

10. Click OK button to validate and exit the dialog box.

MACHINING PARAMETERS

All Machining Parameters are regrouped in a single dialog box.

Click on the Method, Cycle or Direction button to access the Method, Cycle and Direction dialog box.



Method, Cycle and Direction Dialog Box

Non Available Options

When one of the Method, Cycle or Direction parameters is not available for the current toolpath, thecorresponding button and section in the dialog box will be grayed out. In our case, the Direction button inthe Toolpath Parameters menu and the corresponding Machining Angle section in the Method, Cycle andDirection dialog box are unavailable.

Method

The 3 machining method options are Climb, Conventional or Mixed. You can select one of these machining methodsaccording to the toolpath you are creating. Any options which are not available for a particular toolpath will be grayed out.

Climb Climb milling implies that the cutter teeth enter the material perpendicular to the cutting direction and withthe material to the right of the cutting direction.

Climb Method (1 – Material)

Conventional Conventional milling is the opposite to Climb milling, i.e. the cutter teeth enter the material perpendicularto the cutting direction and with the material to the left of the cutting direction.

Mixed The Mixed method is a combination of Climb and Conventional milling and can be used to avoid anexcessive number of retracts.



Dual Surface Machining

In cases where the "base" surface is at an angle less than 90 degrees from the tool axis, an ambiguityexists allowing two walls to be climb cut at the same time (e.g. Pencil Tracing, Z-Level Finishing and Z-Level Remachining). For this reason, you may want select the Mixed option to use a mixture of Climb andConventional milling and hence avoid excessive retracts.

Drive Curves

For machining strategies using Drive Curves (e.g. 2D and 3D Drive Curve Finishing), the applicationconsiders that the stock to be machined is always inside the machining limit and to the right of the cuttingdirection along the drive curve (open or closed).

Cycle

The 4 machining cycle options are Box, Lace, Spiral or Trochoïd. You can select one of these machining cycles accordingto the toolpath you are creating. Any options which are not available for a particular toolpath will be grayed out.

Box The Box cycle implies that the cutter removes material in one direction only and retracts at the end of eachpass. Using this cycle can result in a high number of retracts as shown in the following example.

Box Cycle machining example

Lace The Lace cycle allows the cutter to remove material in both directions. Stepovers are performed at the end ofeach pass according to how Lead-ins and Lead-outs are programmed. Using this cycle can significantly reducethe number of retracts in a toolpath.

Lace Cycle machining example



Spiral Spiral machining implies that the trajectory has a spiral form and is especially used in roughing toolpaths andfor machining pockets.

Spiral Cycle machining example

Trochoid The Trochoidal cycle is only available for the Adaptive Trochoidal Roughing toolpath. Supplementaryparameters are displayed in the dialog box in this case.

You can force the spiral cycle to always use closed contours by activating the Always close Contours option. This allowsyou to reduce the number of retracts on certain areas of the part.

Note that the Always close Contours option is only available for the Global Rough/Rerough toolpath.

Toolpath Areas without Closed Contours Toolpath Areas with Closed Contours

Direction

The 4 machining direction options are Angle from X, Parallel to X, Parallel to Y or Automatic.

The Automatic option only applies to flat surface machining toolpaths and allows the application to determine the optimal,most efficient direction for machining.

NC MACHINING PARAMETERS

Clicking the NC Machining Parameters button in the toolpath menu will display the following Feeds and Speeds dialog box.



Feeds and Speeds Dialog Box

This dialog box allows you to define a number of parameters which the application uses (if the Auto options are activated)to automatically calculate spindle speed and/or cutting feed rate values.

If these parameters are automatically calculated by the application, the results can be optimized by additionally defining thedepth of the cut (Z-Step) and the width of the cut (Stepover).

Activating these 2 parameters allows you to activate the Z-Step and Stepover fields.

You can then enter the values or transfer them from the Toolpath Parameters menu by checking the corresponding boxes.

Applying Toolpath Z-Step and Stepover

The following diagram shows the different feed rates in a single pass.



1 Rapid Feed Rate2 Approach Feed Rate2A Approach Distance3 Cut Feed Rate4 Rapid Feed RateA Safe Z level (high Z of part + retract distance)

1. For our example, keep the default settings.

2. Click OK to validate and exit the dialog box

TOLERANCES

Stock Allowance

The Stock Allowance parameter defines the minimum amount of material, with respect to the part geometry, to be left onthe part after machining.

The Stock Allowance can be positive or negative but must respect the following conditions:

Cutter Condition

Bull Nose or Flat End Corner Radius + Stock Allowance + Offset Allowance > or = 0mm / 0”

Ball End Cutter Radius + Stock Allowance + Offset Allowance > or = 0.2mm / 0.008”

Leave Exact Stock allowance

This option is only available if the Final Allowance parameter in the Part Geometry Activation dialog box has been activated,if not it is grayed out.

If it is activated and you activate this option, the application will always respect the Stock Allowance value defined above.

If you leave this option deactivated, the application will apply a tolerance to the Stock Allowance value defined above thisoption.In other words, the application will not explicity respect the defined Stock Allowance value and may leave more or lessstock than has been defined. In any case, the application takes into account the Final Allowance value defined in the PartGeometry Activation dialog box to ensure that this parameter is respected. The defined Tolerance value is also alwaysrespected.This functionality allows the application to reduce calculation times, especially on large parts. For example, a GlobalRoughing toolpath on a fender part required 10m 25s when the Leave Exact Stock Allowance option was checked. For thesame toolpath, with this option deactivated the calculation time was 8m 40s.

Tolerance

The Tolerance parameter defines the maximum allowed error resulting from intersection calculations, also known asChordal Deviation.



Chordal Deviation

For roughing/semi-finishing toolpaths, the Stock Allowance should have at least the same value as the Toleranceparameter to prevent the cutter from undercutting the surface. The Tolerance value has a direct influence on the number ofpoints in the calculation file.

Stepover

The Stepover is the distance separating two parallel intersection planes. It is constant in the plan view. Scallop height isdetermined by the Stepover value.

1: Stepover Distance

2: Scallop Height

3: Center of cutter

Activating the Auto option associated with the Stepover parameter allows the application to calculate the most appropriatevalue based on the cutter radius and the Tolerance value. This will ensure that the cusp height on slopes up to 45° will beless than or equal to the defined Tolerance value. In the case of the Global Rough/Rerough toolpath, the Auto option isunavailable.

1. Four our example, keep the Stock Allowance and the Tolerance default settings.

2. Enter 10 in the Stepover field.

Z-STEP

This parameter allows you to define the distance between 2 consecutive machining levels in the cutter Z axis.

You can enter the Z-Step value directly in the field to define a fixed distance.

You can also click on the Fixed button if you want to specify the Z-Step. In the case of the Global Rough/Rerough toolpath,you can only define a fixed Z-Step.

Enter 5 in the corresponding field.

CUTTER MOVEMENTS

This section allows you to define parameters concerning approach/retracts movements/distances, and how Lead-ins andLead-outs are performed.

Click on any button of the Cutter Movements section.



The Cutter Movements dialog box is displayed.

Cutter Movements Dialog Box for the Global Rough/Rerough Toolpath

This dialog box is available for the 3-Axis Roughing, 3-Axis Finishing, 5-Axis toolpaths and some of the 2 ½-Axis toolpaths.The number of available parameters in this dialog box varies according to the selected toolpath.

In the case of the Global rough/Rerough toolpath, only a few parameters are available.

Approach Distance

This is the distance at which the cutter changes from the Rapid Rate to the Approach Rate.

Safety Plane Retract Movements

2D Activating this option implies that the retract movement follows the Z axis to the security distance.

3D Selecting this option implies that the application will not directly retract by the security distance in theZ axis only but will calculate the complete movement from one retract point to a new lead-in point asa 3D movement according to the part geometry.

Retract Distance

This is the distance between the highest point of the Z axis within the machining zone and the security distance (thisdistance is relative).

Retract Safety Plane Radius

This parameter allows all directional movements from the retract to a new lead-in point to be performed as an arc of a circlewith a radius equal to the defined value.



1 Retract Safety Plane Radius2 Retract in Z axis only

High Z Value

The Safety Plane Radius value and the Retract Distance value are both added to the highest Z point of thepart to determine the security distance.

Lead-ins/Lead-outs

This section allows you to define how the lead-in/lead-out movements will be performed.

With the Global Rough/Rerough toolpath, you can define vertical or ramped movements.

When the Vertical option is activated, the cutter moves in a plane which is perpendicular to the tool axis (the height of theplane depends on the profile of the part) to a zone just above the Lead-in point. It then descends along the cutter Z-axis atthe Rapid Rate until it reaches the Approach Distance. It then finishes the Vertical Lead-in at the Approach Speed.

1 Rapid Rate along Z-axis to Approach Distance2 Vertical Lead-In at Approach Rate3 Vertical Lead-Out at Rapid Rate4 Second Lead-In cycle

When the Ramp option is activated, the cutter spirals down from one Z-level to the next following the trajectory of the nextcontour. This avoids the cutter plunging directly into the stock.

Example of a Ramp Lead-In

1. For our example, keep the default settings.


2.1.2 - Programming a Global Rough/Rerough Toolpath: Specific Parameters

TOOL HOLDER COLLISION AVOIDANCE

The Tool Holder Collision Avoidance function provides dynamic collision avoidance during toolpath calculations withrespect to the Stock Model. If a potential collision is detected by the application, the toolpath is modified so that the collisionis avoided.

This feature, available in the Holder section of the Toolpath Parameters menu, applies to all roughing toolpaths EXCEPTHigh Volume Roughing and Parallel Roughing.

The No Holder Collision Avoidance button allows you to open the Holder Collision Avoidance Parameters dialog box, inwhich you can activate the holder collision avoidance function.



For our example, do not activate this function.

STOCK PARAMETERS

1. Click on the button in the Stock Parameters section.


Stock Parameters Dialog Box

By default this dialog box allows you to use the global Stock Model. It also allows you to define a local Stock Model with thefollowing possibilities:Specified by Curve: allows you to define a curve which determines the stock boundary.Specified by Machining Zone: allows you to use the Machining Zone (defined by a View or a Window with or without anassociated Boundary Curve) to determine the stock boundary.Max Z: allows you to define a maximum Z value from which machining will start.

2. For our example, leave the Use Global Stock Model option activated.


POCKET SELECTION

This parameter allows you to select the pockets to be machined. This function is useful for ignoring pockets which cannotbe machined by the cutter you are using.

For example, for cutters which use tool inserts, the center of the cutter does not have any cutting edges. If the tool does nothave enough “room” to move around and clear material, eventually the non-cutting center of the cutter will rub against thematerial being cut.

Minimum Width Any pockets smaller than the minimum width value specified for this parameter willnot be machined.If you check the Auto option, only pockets which are equal to at least twice the sizeof the cutter diameter plus twice the value of the Stock Allowance will be machined.

Minimum Depth In some cases, an additional parameter is made available to define a minimumdepth for the pockets to be machined.



How the Application interprets the Minimum Width and Depth

Pocket Width and Depth

Internally, the application creates a view around the pocket and takes intoaccount the length of the longest side of the view as the Minimum Widthvalue. This is illustrated by the opposite picture.

In this example the Minimum Width value is 96.74mm.

In the case of circular or square pockets the automatically defined MinimumWidth value is respectively equal to the diameter or the width.

For our example, keep the Pocket Selection default values.

CUT LINK DISTANCE

The principal use of the Cut Link Distance parameter is to reduce the number of retracts by allowing the cutting feed rate tobe continued over a distance where, without this parameter, the toolpath would normally perform a retract.

The following diagram illustrates how this parameter works.

1: Retract performedA: Value greater than Cut Link Distance2: No RetractB: Value inferior to Cut Link Distance

The following example shows the same section of a toolpath with different values for the Cut Link Distance parameter.

Cut Link Distance = 5 Cut Link Distance = 10



For our example, keep the Cut Link Distance default value.

REROUGHING AREAS

Activating of this optional parameter allows you to limit machining to specific areas of the part by defining the minimumamount of stock to be found and optionally ignoring areas whose surface area is smaller than the cutter diameter.

If you leave this optional parameter deactivated, the application will calculate the toolpath to machine all areas where theremaining stock is superior to the stock allowance.

This optional parameter is used in reroughing stages.

Do not activate this option as we are programming a basic roughing toolpath.

FLAT SURFACE RE-ROUGHING

Activating the Flat Surface Re-roughing option integrates the machining of any flat areas of the part in the GlobalRough/Rerough toolpath.

This option allows the stock material to be machined in order to have the same thickness over the whole part and offersreduced preparation times by avoiding to have to define two separate toolpaths.

The following two examples illustrate this strategy.

Flat Surface Roughing Option Deactivated Flat Surface Roughing Option Activated

For our example, deactivate the Rough Flat Surfaces option.

CUSP HEIGHT

The Cusp Height parameter is used to control the height of remaining cusp when machining a given level.

Machining strategy should take into account that this extra cusp height will have to be removed when the next level ismachined.

This value can be user-defined or an automatic minimum value is calculated by the application. This value is calculatedaccording to the Stepover value defined by the user and the shape and dimensions of the cutter. Error message(s) will bedisplayed if any values are found to be invalid by the application.

The following example illustrates authorized remaining cusp after machining a level with a roughing toolpath.



Stock Model showing remaining Cusp

For our example, do not enter a value for the Cusp Height.

CORNER SMOOTHING

Corner Smoothing

This parameter only applies to surface contours.

If the Corner Smoothing Radius is set to zero, machining will be made with a sharp angle in corners.

If the value is set different to zero, the angle will be machined as a smooth corner. However, this means that more stockmaterial will remain in corners as the radius is increased.

Corner Smoothing Radius = 0 Corner Smoothing Radius = 2

For our example, set the Corner Smoothing Radius to 1.

MACHINING ORDER

Click on the button of the Machining Order section.

The Machining Order dialog box is displayed to allow you to select the machining order of the toolpath.

Machining Order Dialog Box (Global Roughing)



By Zone

If you specify machining By Zone, the part will be automatically divided up into zones by the application and all the levels ofone zone will be machined before moving on to the following zone.

For example, on a part featuring pockets, each pocket may be defined as a zone by the application. In this case, all thelevels of one pocket will be machined before the cutter moves on to machine the next pocket and so on.

Machining by Zone

Each single pocket is treated as a separate zone and all the levels of one pocket are machined before the next pocket (orzone) is machined.

By Level

When you specify machining By Level, the application machines all areas of the machining zone at one level beforestepping down to the next level. Choosing this option on a part featuring several pockets will create many retracts in thegenerated toolpath.

Machining by Level

1. For our example, activate the By Zone option.


INITIAL STEP

This parameter allows you to define an Initial Lateral Step value that is different from the standard Stepover value. Thisparameter is enabled when the Spiral machining cycle option is selected. Accepted values are between 0.05 and 95% ofthe tool diameter.

This option ensures better positioning of the cutter on the first pass of the toolpath, i.e. avoiding the situation where thecutter center is on the edge of the stock.

For our example, do not activate the Initial Lateral Step option.



2.2 - Initializing the Stock Model and Calculating the Roughing ToolpathOnce you have finished defining your toolpath strategy, you have to validate your parameters and run calculations:

1. Make sure that your parameters are defined as in the following example:

Toolpath Parameters Menu: Validate Parameters

2. Click on the OK button in the Toolpath Parameters menu.

The Part Geometry dialog box is displayed. As you have programmed the first roughing toolpath on the workzone, theStock Initialization tab of this dialog box allows you to select the type of Stock Model that will be used for toolpathcalculations.

Part Geometry Dialog Box: Stock Initialization

The Stock Model is an additional data structure in your workzone which is distinct from the part geometry.



The Stock Model is used for calculating the state of stock on the part. It can be used at any stage of machining, however itis particularly designed for use at the roughing, re-roughing and semi-finishing stages. The Stock Model can also be usedas the Remachining Reference in all three remachining toolpaths (Z-level, Planar and Contour Remachining toolpaths).

3. We will choose the default 3D Solid Block proposed by the system, so click on the OK button.

A new toolpath is created under the Toolpaths section in the Workzone Manager.

The and icons next to the toolpath name indicate that the toolpath has not yet been calculated. The Stock Model

has also been added to the Workzone Manager with a icon.

New Toolpath in the Workzone Manager

You can start toolpath calculations in 3 different ways:

Right click on the icon or on the toolpath status in the Workzone Manager and select Execute in the context menu (1in the picture below).

Use the icon in the bottom right-hand corner of the Viewing Area (2 in the picture below). Right click on this iconto start calculations immediately or left click to display all pending calculations and click on the Execute button. Youcan invert the functions of the mouse buttons. To do so, go to Utilities > Software Configuration > Display Settings >Execute and uncheck the Left Click (Execution Dialog). Right Click (Immediate Calculation) option.

Select the toolpath in the Workzone Manager and click on the icon (3 in the picture below).

Starting Toolpath Calculations

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Initializing the Stock Model and Calculating the Ro


4. Click on the icon (2 in the picture above).


Execution Dialog Box: Stock Model Initialization and Toolpath Calculation

5. Click on the Execute button.

The Parallel Calculation dialog box is displayed. It shows the progress of calculations.

WorkNC Parallel Calculation Window

You can show/hide this dialog box by clicking on the icon in the bottom right-hand corner of the user interface. Youcan also see the calculation progress next to this icon.

Calculation Progress

Options 1 and 3

If you select the other two options, the Parallel Calculation dialog box pops up directly after selecting thecorresponding option.



The icon is displayed meaning that your toolpath calculations have been successfully executed. If a is displayedinstead, it means that an error has been detected during toolpath calculations. In this case, check the parameters of yourtoolpath and try again.

Workzone Manager: Calculated Toolpath

2.3 - Displaying ToolpathsOnce you have executed your first toolpath, you have several possibilities to visualize the results in the Viewing Area.

Global View

There are 2 ways of obtaining a global view of a toolpath in the Viewing Area:

1. Check the box of the corresponding toolpath in the Workzone Manager.

2. Double click on the toolpath name in the Workzone Manager.

The complete toolpath is displayed in the Viewing Area.

Toolpath Display Activation

You can show/hide the various elements of the toolpath displayed in the Viewing Area by activating/deactivating thecorresponding icons on the right side of the user interface.

In the example below, we have deactivated the display for the approach and rapid movements:



Toolpath Display: No Approaches and Rapids

Note that you can also show/hide the part ( icon) or the cutter ( icon).

Progressive Display

The Toolpath Progressive Display dialog box allows you to dynamically visualize and control how the toolpath is displayedon the part.

1. Select the toolpath in the Workzone Manager.

2. Click on the icon on the left side of the user interface.

Toolpath Selected: Activating Progressive Display

The Toolpath Progressive Display dialog box is displayed.

Toolpath Progressive Display Dialog Box

Click on the icon to start and stop the progressive display.

Several additional functions are also available so that you can manage the display:

Use the icon to quickly get the final result of the simulation. If you want to go back to the beginning of the

simulation, simply click on the icon.

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Displaying Toolpaths" �2.3 - Displaying Toolpaths


Click on the icon to start a progressive display or simulation while hiding all points that have already beendisplayed.

Click on the on the icon to restart the progressive display from the very beginning or from the point when you

clicked on the icon.

Click on the and icons to show the progressive display or simulation from point to point.

When using the Progressive Display mode, you can also click on any point of the toolpath in the Viewing Area.

The cutter is automatically positioned where you have clicked and you can orientate the part and use the zoom functions tocheck the different passes of the toolpath:

Progressive Display: Point Selection

2.4 - Opening the Toolpath Parameters Menu of a ToolpathOnce you have created/calculated a toolpath, you can re-open its Toolpath Parameters menu to modify the parameters.

There are several ways of doing it:

Click on the / icon next to the toolpath in the Workzone Manager.

Right click on the toolpath name in the Workzone Manager and select Parameters.

Click with the mouse wheel button on the toolpath name in the Workzone Manager.

You can open the Toolpath Parameters menu of a toolpath which is being calculated but you cannot modify its parametersduring calculations.

2.5 - Updating the Stock ModelYou can display the Stock Model state after the roughing toolpath. To do so, proceed as follows:

1. In the Workzone Manager, click on the toolpath you have just defined.


�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Displaying Toolpaths" �2.3 - Displaying Toolpaths


Stock Model Update Selected

3. Right click on icon in the bottom right-hand corner of the Viewing Area.

4. Once calculations are completed, position your cursor on the Workzone Manager and press the Space bar on yourkeyboard.

The Workzone Manager is widened and you can see the icon that indicates that the Stock Model has been updated.

Workzone Manager: Stock Model Updated

Workzone Manager Display

When you place the cursor on the Workzone Manager and press the Space bar, the Workzone Manager iswidened. You can undo this operation by pressing the Space bar again so that Workzone Manager isdisplayed in its default size.

5. In the Workzone Manager, under the Part Geometry section, activate the Stock State option.

the Stock Model is displayed on the part in the Viewing Area. It displays the state of the Stock Model after the GlobalRoughing toolpath we have executed.

Part Geometry: Stock State

6. Click on the + icon below the Stock State option and compare the initial stock with the stock model after toolpath #1.

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Opening the Toolpath Parameters Menu of a Tool


Now you can see that you need to execute a reroughing toolpath and change the toolpath parameters to prepare the partbefore executing finishing toolpaths.

2.6 - ReroughingAfter having executed your first roughing toolpath on a part, you can rerough the part by selecting the GlobalRough/Rerough toolpath strategy again.

You can then refine your toolpath parameters by selecting a smaller cutter, reducing the values of the Tolerances fields,activating the Rough Flat Surfaces option, etc.

The reroughing stage is not a mandatory step for machining a part, but the part will be more suitably adapted for thefinishing phase.

2.6.1 - Programming a Reroughing Toolpath

1. Create a new toolpath.

The Global Rough/Rerough strategy is already selected.

2. Define the following parameters:

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing�XE "Updating the Stock Model" �2.5 - Updating the Sto


Global Rough/Rerough Parameters: Reroughing Stage

3. Give a number to the new tool.

4. Validate the parameters and run the toolpath calculations.

Stock Model

The new toolpath will be calculated on the Stock Model that has been updated with the first toolpath.

5. Activate the toolpath display.

You should obtain the following result:

Global Rough/Rerough Toolpath Calculated on Updated Stock Model

�XE "3-Axis Roughing Toolpaths" �2 - 3-Axis Roughing �XE "Reroughing" �2.6 - Reroughing


6. Update the Stock Model with this new toolpath.



3 - Curve Machining ToolpathsThese toolpaths are available in the 2 ½-Axis Toolpaths tab of the Toolpath Strategy dialog box.

Curve Machining Toolpaths in the Toolpath Strategy Dialog Box

3.1 - Curve Machining Z Movement

Curve Machining toolpaths have the same standard parameters as the other toolpaths,except for the Z-Step parameter. This parameter is replaced by the Curve Machining ZMovement options.

When defining a Curve Machining toolpaths, you have to define the Curve Machining ZMovement options by clicking on the relevant button in the Toolpath Parameters dialog box.

The Curve Machining Z Movement dialog box is displayed. It contains a series of options for controlling the cuttermovements.



Curve Machining Z Movement Dialog Box

The enabled options may differ according to the selected toolpath.

Let’s see how to configure these parameters.

3.1.1 - Reference Z

This section of the dialog box contains three options which determine the behavior of cutter movements in the Z axis withrespect to the selected curve.

Reference Z Section

Z of the Curve

This option is available for all Curve Machining toolpaths except Rib Machining. With this option, the cutter follows the Zvariations of the curve.

1 Curve to machine

�XE "Curve Machining Toolpaths" �3 - Curve Machining�XE "Curve Machining Z Movement" �3.1 - Curve Mach


Local High Point of the Curve

This option applies only to the Curve Remachining toolpath and can be used to block the Z-level for each pass at themaximum Z value for that pass. This function is particularly useful when using 3D machining curves and small cutters inorder to avoid tool deflection and possible breakages.

Curve Remachining with Tool at Constant Local High Point Same Curve Remachining Toolpath from -X View

Given Z (Ignore Z of the Curve)

This option is available for all Curve Machining toolpaths except Rib Machining. With this option, the cutter stays at a userdefined constant Z level. When this option is selected, an additional Z Level parameter is displayed allowing the user todefine the required value.

On Curve Engraving with User Defined Z Level Same On Curve Engraving Toolpath from +X View

3.1.2 - Number of Passes

This section of the dialog box allows the user to define if a single pass or multiple passes are generated in the toolpath. Youmay need to select the multiple pass option when there is a large amount of stock to be removed with respect to the curvealong the Z axis.

This section of the dialog box is displayed as shown below when the Multiple Passes option is activated. If the One Passoption is selected, the Machining Depth parameters are not displayed.

Number of Passes Section



One Pass

Only one single pass is made with respect to the machining curve.

Multiple Passes

Activating this option implies that a series of passes are to be machined.

The number of passes depends on the values defined in the Total Machining Depth and Z Step-Down parameter fields.

Selecting One Pass or Multiple Passes also implies that you must define how passes are machined with respect to themachining curve in the Z axis. This is done by selecting one of the options in the Start/End Z Level section of the dialog box.

Ramp Down Between Levels

This option is only displayed for the Tangent to Curve and On-Curve Engraving toolpaths.

Multiple Passes with Ramp Down Option

When you select this option, a new field is displayed to allow you to enter the Ramp Angle, i.e. the angle that the cutter willfollow when changing Z-level.

Activating this option implies that the total machining depth is machined in one continuous spiral movement. With thismethod there is only one lead-in and one lead-out for the complete cycle instead of one lead-in and one lead-out at eachlevel when the Ramp Down option is deactivated. The following screenshots illustrate this strategy.

Tangent to Curve with No Ramp Down Tangent to Curve with Ramp Down

Reduce Air Cuts

This option, which is only available when part surfaces have been activated, allows you to eliminate wasteful air cuts asWorkNC will take into consideration the local Z height of the part geometry to determine at which Z level machining will start.

The following toolpath examples have been programmed with identical parameter values except for the Reduce Air Cutsoption.



Toolpath with Reduce Air Cuts not Selected Toolpath with Reduce Air Cuts Selected

3.1.3 - Start/End Z Level Options

The different Start/End Z Level options determine where the toolpath is positioned in the Z axis with respect to themachining curve.

The actual options displayed will depend on the reference Z option that is selected and if it is a one pass or a multi-passtoolpath.

The following screenshots shows the possible options for a single and a multipass toolpath which follows the Z of the curve.

Options for Single Pass following Z of the Curve Options for Multi-Pass following Z of the Curve

If you select the local high point of the curve as the reference Z level, the Start/End Z Level options are displayed as follows.

Options for Single Pass at High Point of the Curve Options for Multi-Pass at High Point of the Curve

If you select the given Z as the reference Z level, the Start/End Z Level options are displayed as follows.



Options for Single Pass at Given Z Options for Multi-Pass at Given Z

3.2 - PocketingThe Pocketing toolpath is intended for emptying pockets which have certain characteristics: regular form, flat basesperpendicular to the tool axis and vertical walls in line with the tool axis. The Pocketing toolpath provides a 2D functionwhich is simple to set up - it does not necessarily require the part to be activated.

3.2.1 - Programming a Pocketing Toolpath

To illustrate this toolpath, we are going to use the pockets_holes.xdw CAD file.

1. Create a workzone.

2. Create a new Pocketing toolpath with the following parameters:Flat cutter, Body Radius: 5Tolerance: 0.1Stepover: 2

Curve Machining Z Movement

1. Click on the button in the Curve Machining Z Movement section.

The Curve Machining Z Movement dialog box is displayed.

2. Since we are going to create curves as reference curves for machining, activate the Z of the Curve option in theReference Z section.

3. Activate the Multiple Passes option in the Number of Passes section.

4. Enter the Machining Depth, i.e. the depth of the pockets which is 20 mm in this case. Leave the Z Step-Down defaultvalue (1 mm). The cutter will therefore make 20 passes in each pocket.

5. Activate the Toolpath starts on the Curve option since the curve set has been created on the top of the pockets.



Curve Machining Z Movement Defined


Now you have to define the specific parameters

Curve Selection

1. Click on the <None> button of the Curve Selectionparameter.

2. Click on the icon in the Curve Selectiondialog box.

3. Create the curves as in the opposite picture.

Curve Stock Allowance

You can define the stock allowance to be left in the Z-axis between the curve and the tip of the tool. Entering a StockAllowance in Z value can be useful when the curves to machine are set in the bottom of the pockets.

You can also define the stock allowance to be left in the lateral direction if you want torough the pockets.

For our example, set both values to 0.

�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Pocketing" �3.2 - Pocketing


Entry Points

The Pocketing toolpath can be programmed without any entry point. In this case machining will start where there is thelargest amount of free space and progress towards the curve defined by the user. If the user defines an entry point, themachining strategy will depend where the point is defined within the pocket.

Let’s suppose that you want the toolpath to start at the center of the pockets:

1. Click on the <None> button of the Entry Points option.

2. Click on the button in the Entry Point Selection dialogbox.

3. Create the center points of the pockets as in the oppositepicture.

Open Side(s)

This parameter allows you to machine open pockets by selecting the open curve which represents the open side of thepocket.

For our example, do not select any open curve.

Collision Detection

The Check Cutter/Part Collisions option allows collision detection on the toolpath. If any collision is detected, no toolpath isgenerated.

1. Do not activate the Check Cutter/Part Collisions option.



Pocketing Toolpath

3.2.2 - Programming a Pocketing Toolpath with Open Pockets

To illustrate this, we are going to use the workzone created from the corner_smoothing.xdw file.



Open Pocket

The part has an open pocket that we are going to machine with a closed contour curve created at the bottom of the pocket

1. Create a Pocketing toolpath and the following parameters:Flat cutter, Body Radius: 4Tolerance: 0.01Stepover: 4Vertical Lead-insLateral Stock Allowance: 0

2. Click on the <None> button of the Curve Selection parameter.

3. Click on the icon in the Curve Selection dialog box.

4. Create the following curve and validate:

Closed Contour Curve

5. Click on the <None> button of the Open Side(s) parameter.

6. Click on the icon in the Curve Selection dialog box

7. Create the following open curve and validate:



Open Side Curve

8. Validate the parameters and run the toolpath calculations.You should obtain the following result:

Pocketing Toolpath with an Open Side

The tool starts machining outside the pocket in such a way that the open side is fully machined.

Using a Trochoidal Milling Cycle

With open pockets, since the tool can start machining outside the pocket, you can program a trochoidal milling cycle andobtain a smoother toolpath.

1. Right click on the toolpath in the Workzone Manager and select Same Toolpath.

2. Click on the Cycle button and activate the Trochoid option.



Milling Cycle in Pocketing Toolpath

3. Define the Maximum Forward Step and validate.



Pocketing Toolpath with Trochoidal Option

Open Pockets with several Open Sides

You can also program a Pocketing toolpath to machine an open pocket which has several open sides. To do so, create acurve set with a curve sequence for each open side:

Curve Sequences for Open Pockets

Curve Direction

The direction of the curves used may have an incidence on the generated toolpath.

3.3 - Rib MachiningThis toolpath has been specially designed to enable the user to machine reinforcement ribs on parts with one single pass ateach Z level. The ribs can already be defined in the part geometry or be created directly from curves imported from yourCAD system.



A curve must be associated to a rib which is defined in the part geometry to enable the application to calculate the toolpathcorrectly.

Ribs can be created in the part geometry or from curves imported from your CAD system.

3.3.1 - Programming a Rib Machining Toolpath

We are going to use the rib axis we created earlier on the plate_cover to machine the ribs with this particular toolpath:

Plate Cover: Ribs

Create a new Rib Machining toolpath with the following parameters:Flat cutter, Body Radius: 1.5Mixed method, Lace cycleStock Allowance: 0Tolerance: 0.01Vertical Lead-ins


1. Click on the button of this parameter.

The Curve Machining Z Movement dialog box contains less options than for the other curve machining toolpaths.

Curve Machining Z Movement Dialog Box (Rib Machining toolpath)

It only allows you to define the Z Step-Down value and activate the Ramp Down between Planes option.

2. For our example, enter 2 in the Z Step field and click OK to validate.

Now you have to define the specific parameters.

�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Rib Machining" �3.3 - Rib Machining


Curve Selection


2. Select the Curve Set that contains the rib axis that we created earlier.

Rib Axis

The curve must always be defined along the longitudinal centerline of the rib to be machined when the ribis defined in the part geometry. When the rib is created directly from a curve, the curve is the centerline ofthe rib when it is machined. The curve always represents the bottom of the rib.

Project onto Surface

This parameter allows an imported CAD curve to be projected onto the part surface so that machining will be performeddown to that surface plus an eventual stock allowance. It is only used when the rib is defined in the part geometry.

Activate this option since the ribs are defined in the part geometry

Surface Stock

This parameter defines any surface stock with respect to the part geometry.

For our example, set the surface stock to 0.

Cut Link Distance

For our example, leave the default value.

Minimum Cut Length

This parameter defines a minimum machining length below which the pass is not generated in the toolpath.

1. For our example, keep the default minimum value (0.2).



Rib Machining Toolpath

We have hidden most of the part surfaces for a better display of the toolpath.



3.4 - FacingThis toolpath has been specially designed to provide a simple solution for facing plates whatever the size and complexity.The user only has to define the curve(s) to be machined along with the Stock Allowance and the Curve Machining ZMovement options without necessarily having to activate the part geometry.

3.4.1 - Programming a Facing Toolpath

To illustrate this toolpath, we are going to use a workzone created from the pockets_holes.xdw CAD file.

Create a new Facing toolpath with the following parameters:Flat cutter, Body Radius: 20Tolerance: 0.02


Let’s suppose that you need to program 3 passes on a 22mm Machining Depth:


2. Define the following parameters and validate:

Facing Toolpath: Curve Machining Z Movement


Curve Selection


2. Click on the icon in the Curve Selection dialog box and create the following curve:



Curve for Facing Toolpath


You can define the stock allowance to be left in the Z-axis between the curve and the tip of the tool.

1. For our example, set the value to 0.



Facing Toolpath

3.5 - Tangent to CurveThis toolpath has been specially designed for trimming surplus stock from the edges of a part. It may be used before aroughing toolpath or may be used on a near-finished part to trim off excess stock.

3.5.1 - Programming a Tangent to Curve Toolpath

To illustrate this toolpath, we are going to use a workzone created from the adjust_fillet.xdw CAD file.

Once you have opened the workzone, create a new curve, as illustrated below:

�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Facing" �3.4 - Facing


Curve for the Tangent to Curve Toolpath

We are going to use this curve as reference curve for the toolpath.

Create a new Tangent to Curve toolpath with the following parameters:Flat cutter, Body Radius: 10Tolerance: 0.01


Define the following parameters:



�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Tangent to Curve" �3.5 - Tangent to Curve


Curve Selection


The Curve Selection dialog box is displayed.

2. Click on the <None> button in the Curve Definition section.

3. Select the curve that you have just defined and validate.


Stock Allowance in Z Defines the amount of stock to be left with respect to the curve along the tool Z axis.

Lateral Stock Allowance Defines the amount of stock to be left with respect to the curve in the lateral direction.

For our example, set both stock values to 0.

Curve Lateral Offset

Lateral Stock Allows you to define the quantity of lateral stock to be removed.

Lateral Stepover Defines the Stepover value in the lateral direction with respect to the curve.

Enter 10 in the Lateral Stock field and 5 in the Lateral Stepover field.

Machining Order

This parameter is available only when a lateral stock has been defined and when multi-pass machining has been selected.

Activating the Depth First option implies that machining of all levels along the Z axis of a given pass will be completedbefore stepping over and repeating the same sequence until all lateral stock has been removed.

1 All levels in the same Z axis are machined first

2 Tool steps over and starts second Z axis machining sequence

Activating the Lateral First option implies that all passes at the same Z level will be machined before moving down to thenext Z level. This sequence is then repeated until the total machining depth has been machined.

1 All passes at the same Z level are machined first



2 Tool steps down and machines next Z level

Activate the Lateral First option.

Cutter Compensation

The Cutter Compensation parameter will help users who regularly adjust the postprocessor files because they do not havea tool with the relevant diameter or because they want to compensate for cutter wear after a tool sharpening operation.

For our example, keep the default Cutter Compensation parameter.

Collision Detection

The Check Cutter/Part Collisions option allows collision detection on the toolpath. If any collision is detected, no toolpath isgenerated.

1. Do not activate the Check Cutter/Part Collisions option.



Tangent to a Curve Toolpath

If you simulate the toolpath, you should see that it machines all the passes with the same Z level before stepping down tomachine the next level.

3.5.2 - Programming the Lead-in/Lead-out Parameters

To illustrate the Lead-in/Lead-out parameters, we are going to use a workzone created from the corner_smoothing.xdw file.



Curves for Tangent to Curve

Before programming the toolpath, create a closed curve (A) and an open curve (B) as in the above picture.

1. Create a Tangent to Curve toolpath with the following parameters: select the closed curve (A in the above picture) asCurve to Machine.

Tangent to Curve: Parameters

2. Click on any button in the Cutter Movements section.

The Cutter Movements dialog box is displayed. For the Tangent to Curve, On-Curve Engraving and Chamfering toolpaths,it contains a different section for lead-in and lead-out movements.

3. Define lead-in parameters as in the picture below:



Lead-in Parameters without any Overlap

4. Click on the <None> button of the Lead-in Point option, click on the icon in the Lead-in Point Selection dialogbox and create the following point:

Lead-in Point Creation

5. Click on the <None> button of the Lead-out Point button and select the same point in the Lead-out Point Selectiondialog box.


7. Validate the parameters and run the toolpath calculations




Tangent to Curve with a Closed Curve

Try to change lead-in parameters (define e.g. an overlap distance) and check resulting toolpaths.

Using the Backtrack Option

The Backtrack option only applies to open curve machining. If you activate this option, the cutter will lead in at thedesignated point and machine the curve. Then, instead of making a lead-out and a retract, the cutter will move back alongthe already executed toolpath at the cutting feed rate until it returns to the initial lead-in point where a retract will beperformed.

1. Make a copy of the last toolpath.

2. Modify the parameters to use the open curve.


4. Click on the icons of the Lead-in Point and Lead-out Point options to remove the corresponding points.

5. Activate the Backtrack option and validate.



Backtrack Option Activated



Tangent to Curve - Backtrack Option

The cutter goes back and retracts along the same path.

Lead-in from Outside the Flat Surfaces

This option is only available for the Tangent to Curve toolpath.



3. Activate the Lead-in from Outside the Flat Surfaces option and validate.



Lead-in from Outside the Flat Surfaces



Lead-in Movement Outside the Flat Surface

The lead-in distance is calculated with respect to the cutter dimensions. Its minimum value is 10mm.

3.5.3 - Using the Curve Selection Options on the Tangent to Curve Toolpath

As is the case of the Wall Plunge Machining toolpath, the Tangent to Curve toolpath also has parameters to create curvesor to simulate them by selecting walls or flat surfaces at the bottom of walls.

To illustrate this, we are going to use the Wall_machining workzone.

We are going to program a series of toolpaths to machine the walls in the open pocket and in the keyway:



Walls to Machine

1. Create a new Tangent to Curve toolpath with the following parameters:Flat cutter, Body Radius: 5Tolerance: 0.1Lateral Stock Allowance: 0

As is the case of the Wall Plunge Machining toolpath, the Tangent to Curve toolpath allows you to create the curves tomachine or to simulate them by selecting planar surfaces at the bottom of the walls to machine or by selecting the wallsthemselves.Here, we are going to select the planar surfaces.

2. Click on the <None> button of the Surface Selection option and create a surface list with the following planar surfaces:

Planar Surface Selection

3. Click on the button in the Curve Selection section.




Curve Selection Dialog Box

As you can see, it offers the same Curve Definition parameters as the Wall Plunge Machining toolpath. Here we are goingto create the curve to machine.

Curve Definition

You can click on the <None> button and create the curves to machine directly on the geometry.

In this case, the Side of Curve to Machine option is activated, allowing you to click on a point to indicate which side of thecurve is to be machined. It is mainly used when working on 2D models.

When clicking on a point, you can use this point for lead-in and lead-out movements by activting the corresponding option.

For our example, activate the Planar Surface(s) Selection option.

Curve Definition: Planar Surface Selection

Machining Options

The Machine Curves separately option allows the Z levels of the curves to be taken into account when they are different. Itis activated by default.

1. For our example, deactivate this option and validate.





Make a copy of this toolpath and activate the Machine Curves separately option for the toolpath copy.




Tangent to Curve: Machine Curves Separately Activated

The toolpath has now fully machined the keyway.

With the Machine Curves separately option activated, you can add a Tangency Extension value:

Tangency Extensions

3.6 - Cutter CompensationThe Cutter Compensation function is available for both Tangent to Curve and Curve Remachining toolpaths. CutterCompensation parameters are defined when programming the toolpath and taken into account in the postprocessor filesent to the CNC controller (Line # 32) with the standard G41 and G42 codes for a left or right compensation respectively.Do not forget that the tool correction function only works if radial lead-ins were defined in the corresponding toolpath.

You can choose whether you want to apply the compensation value to the cutter center or to the part profile. Another optionhas also been made available to automatically apply the compensation to the part profile but with a possible smoothingradius in corners.

In some cases, and for maximum efficiency, you can also use a smoothing and/or extension radius to protect sharp edges.

The Cutter Compensation parameter will help users who regularly adjust the postprocessor files because they do not havea tool with the relevant diameter or because they want to compensate for cutter wear after a tool sharpening operation.

To illustrate this parameter, we are going to use the Compensation workzone.The part has sharp and rounded corners as well as one point which you will use to specify the side of the curve to machine:



Curve for Compensation Option

3.6.1 - Programming a Cutter Center Compensation

If you do not change the default compensation settings - i.e. if you keep the cutter center value - the operating mode of thetoolpath will be the same as in the previous versions. The G41 and G42 codes are transmitted to the post-processor file,which means that the operator will need to specify 0 if he does not want to correct the toolpath.

1. Create a new Tangent to Curve toolpath with the following parameters:Bull-nose cutter, Body Radius: 3 – Corner Radius: 1Tolerance: 0.1Curve Machining Z Movement: default parametersLateral Stock Allowance: 0


3. Click on the <None> button of the Curve Definition option and create the following curve:

Curve to Machine

4. Deactivate the Machine Curve Separately option and select the point to specify the side of the curve to machine.

Curve Selection Parameters Defined

5. Validate the parameters and run the toolpath calculations.You should obtain the following result:

�XE "Curve Machining Toolpaths" �3 - Curve Machining�XE "Cutter Compensation" �3.6 - Cutter Compensation


Regular Tangent to Curve Toolpath - Inside

Using the Smoothing Radius

Now we are going to illustrate how the smoothing radius is used for cutter compensation in the Tangent to Curve toolpath.The smoothing radius is used to avoid directional changes and operates in the same way as 3D corner smoothing.

1. Right click on the toolpath in the Workzone Manager and select SameToolpath.

2. Click on the Cutter Center button.

The Cutter Compensation dialog box is displayed.

3. Enter 1.5 in the Smoothing Radius field.




Cutter Center Compensation with Smoothing Radius

The right angles A and B are smoothened by the toolpath.

Using the Extension Radius

The extension radius offers improved protection to sharp edges while avoiding sharp corners on the toolpath.




2. Click on the Cutter Center button, set the Smoothing Radius back to 0and define a 2 mm Extension Radius.

3. Click OK to validate



Curve Machining with Extension Radius

The calculated toolpath is smoother.

Extension Radius Summary

Extensions radius value Influence on the toolpath

Radius = 0 Sharp corners on the toolpath

Radius between 0 and the cutter radius Smoother toolpath

3.6.2 - Programming a Compensation on the Profile

You can define a cutter compensation to the part profile as opposed to the Cutter Center option. In this case, the operatorwill need to define the compensation value directly on the machine. This also means that the cutter compensation largelydepends on the machine you use and that the generated toolpath followed by the machine will not be visible in theapplication.

1. Right click on the last toolpath and select Same Toolpath.

2. Click on a button in the Cutter Movements section and enter 4 in theLead-in Radius field. In the case of the On Profile CutterCompensation, you have to define a Lead-in/out Radius which higherthan the Body Radius of the tool.

3. Click on the Cutter Center button, activate the On Profile option andvalidate.





On Profile Compensation Toolpath

Once the postprocessor is sent to the machine, the operator simply needs to define the correction value for compensation:the application of this value is then managed automatically by the machine controller.

3.6.3 - Programming a Minimum Compensation

Last possible option for cutter compensation is the minimum compensation. The Minimum Compensation option is thesame as On Profile, except that you can specify a smoothing radius for corners.

1. Right click on the last toolpath and select Same Toolpath.

2. Click on a button in the Cutter Movements section and deactivate theBacktrack option.

3. Open the Cutter Compensation dialog box and activate the MinimalCompensation option.

4. Leave the Smoothing Radius value to 0 and click OK to validate.



Minimum Compensation Toolpath I



The toolpath follows the profile of the geometry but a minimum smoothing radius based on the tool radius is automaticallyapplied in sharp corners.

This minimum smoothing radius can be extended by using the Smoothing Radius field as in the picture below:

Minimal Compensation Option

Once the postprocessor is sent to the machine, the operator simply needs to define the correction value for compensation:the application of this value is then managed automatically by the machine controller.

3.6.4 - Simulating with Cutter Center with Minimal Compensation

When using Minimal Compensation with a Tangent to Curve or a Curve Remachining toolpath, you can choose to displayeither the cutter profile or the cutter center.

To illustrate this, we are going to use the flats_walls_machiningworkzone. In this workzone, we have created a curve to machine thefollowing walls:

1. Create a new Tangent to Curve toolpath with the following parameters:Flat cutter, Body Radius: 5Lateral Stock Allowance: 0Tolerance: 0.01Lead-in Radius: 10


The Curve Selection dialog box is displayed.

3. Click on the <None> button in the Curve Definition section, then select the appropriate curve.


5. Click on the button in the Cutter Compensation section.

6. Activate the Minimal Compensation option.



Cutter Compensation: Minimal Compensation

7. Activate the Display Cutter Center (Offset) option.



Tangent to Curve with Minimal Compensation and Cutter Center

Note that handling the cutter center is available for toolpath simulation, stock model update and tool holder collisiondetection.

Postprocessing

The profile toolpath is taken into account for postprocessing. When you activate theDisplay Cutter Center option, the application generates a file called outil*.prof which isused by the postprocessor.

In our example, we are going to check for tool holder collision on the toolpath:


2. Define a cylindrical tool holder with 10 mm radius.

3. Activate the Calculate the Recommended Safe Tool Length and Create Collision Curve and Ranges options.

4. Click OK to validate and run the calculations.

Collisions should be detected.

5. Click on the icon again.

You should see the following collision curve on the tool holder:



Collision Curve with Cutter Center

6. Create the same toolpath but this time activate the Display Profile (no Offset) option.

You should see the following collision curve on the tool holder:

Collision Curve with Profile

3.7 - On-Curve EngravingThis toolpath has been specially designed for engraving text or numbers on the part - a manufacturer's name, a productname or logo for instance. It is normally used on a finished part. It is recommended for use on flat or slightly curvedsurfaces only.

It is also possible to machine ribs on parts by projecting a curve onto the part surface and then machining away from thecurve with a constant Z-step over a given machining depth.

You can also use the On-Curve Engraving toolpath to machine keyways in flat areas by laterally machining the curve to awidth that is greater than the cutter diameter thanks to trochoidal or lace machining with respect to the curve.

All the standard tools supported by the application may be used for the On-Curve Engraving toolpath, although you willcommonly use a pointed tool for machining.

3.7.1 - Programming an On-Curve Engraving Toolpath

To illustrate this toolpath, we are going to open the workzone that we used for creating text in the Preparation Mode section.

Create a new On-Curve Engraving toolpath with the following parameters:Flat cutter, Body Radius: 1Tolerance: 0.01



Lead-in Parameters

The Lead-in parameters of the On-Curve Engraving toolpath are the same as the Lead-in parameters ofthe Tangent to Curve toolpath.



The Curve Machining Z Movement dialog box is displayed.

Here we want the cutter to follow the curve we created on the surface:

2. Activate the Z of the Curve option in the Reference Z section.

3. Activate the One Pass option in the Number of Passes section.

4. Activate the Toolpath finishes on the Curve option in the Start/End Z Level section.


For further information about the different options, press [F1] to start the Online Help.



Curve Selection


2. Select the curve to machine, i.e. the text that we converted into a curve (called Engraving.ccv in our example).


Stock Allowance in Z Defines the amount of stock to be left with respect to the curve along the tool Z axis.

Lateral Stock Allowance Defines the amount of stock to be left with respect to the curve in the lateral direction.

For our example, keep the default parameters.


Lateral Stock Allows you to define the quantity of lateral stock to be removed.

Lateral Stepover Defines the Stepover value in the lateral direction with respect to the curve.

Project onto Surface

Allows an imported CAD curve or a curve created in the application to be projected onto the part surface.

For our example, do not activate this option.

�XE "Curve Machining Toolpaths" �3 - Curve Machining�XE "On-Curve Engraving" �3.7 - On-Curve Engraving


Cut Link Distance

The principal use of the Cut Link Distance parameter is to reduce the number of retracts by allowing the cutting feed rate tobe continued over a distance where, without this parameter, the toolpath would normally perform a retract.

In the case of the On-Curve Engraving toolpath, especially when you are engraving texts or numbers, it allows you tospecify the minimum distance between two points in order to ensure separation in lettering. This means that you shouldenter a value that is small enough to have retracts between the letters.

For our example, enter 20 in the Cut Link Distance field.

Keyway Parameters

Same parameters as for the Keyways toolpath.

For our example, do not define keyway parameters

Engraving Order

When the Curve Set to machine is made of several curves, you can define a machining sequence order:

ShortestPath

The toolpath will look for the shortest transition distance between the curves, whatever the order in whichyou have selected them.

OriginalOrder

The toolpath will follow the order in which you have selected the curves.

1. Make sure that the Shortest Path option is activated.



Engraving Toolpath

If you simulate the toolpath in the Progressive Display mode, you can see that the cutter does not retract between some ofthe letters. This means that the specified Cut Link Distance is too high. In this case, the distance separating the letters islower than 20 mm, therefore the cutter does not retract.

Missing Retracts

1. Open the Toolpath Parameters menu of this toolpath.



2. Enter a smaller value in the Cut Link Distance field, for example 5.If the distance separating the letters is higher than 5 mm, then the cutter retracts.



Retracts Between Letters

The cutter retracts between all the letters.

Engraving the Geometry

You can enter a negative value in the Stock Allowance in Z field to make the tool engrave the geometryover the corresponding distance.

See also...

" Programming the Lead-in/Lead-out Parameters" on page 67

3.7.2 - On-Curve Engraving: Curve Offset with Multiple Passes

When programming an On-Curve Engraving toolpath with multiple passes and the Z of the curve as the reference Z, youcan choose to generate passes with a simple translation of the curve in the Z-axis or generate passes based on an offset ofthe curve against the surface normals.

Translation in theZ-Axis

The toolpath follows the exact curve along the Z-Axis with a constant Z step-down value along theZ-Axis. In this case, the material removal operation may not be optimal.

Offset The toolpath offsets the curve in accordance with the surface normals. This option allows regular,optimized material removal.

Open the pumpe_engraving workzone.There is a 3D curve.



WorkNC Curve

1. Program an On-Curve Engraving toolpath based on this curve, using the following parameters:Bull-nose cutter, Body Radius: 1.5 – Corner Radius: 0.2Tolerance: 0.1

2. Click on the button in the Curve Machining Z Movement section and define the following parameters:

Translation in Z


4. Right click on the toolpath name in the Workzone Manager and select Same Toolpath.

5. Click on the button in the Curve Machining Z Movement section and activate the Offset option:

Offset


7. Show an X+ view of the part and compare both toolpaths in the Viewing Area.You can note that the first toolpath follows a translation of the curve along the Z-Axis while the second toolpathfollows an offset of the curve according to surface normals to optimize the material removal.



Translation in Z Offset

Translation in Z with A as the Step Down Value Offset with A as the Step Down Value

3.8 - Curve RemachiningThis toolpath can be used both inside and outside a curve for removing rest material in corners. It is a useful complement tothe Pocketing and Tangent to Curve toolpaths to remove rest material left by the cutter used for these toolpaths.

It automatically calculates areas along a curve to be machined in relation to a reference cutter radius. You indicate areference cutter larger than the actual cutter to be used for machining and the application automatically detects the areaswhere the reference cutter would not be able to go. Only these areas will be used for machining.

3.8.1 - Programming a Curve Remachining Toolpath

To illustrate this, use a workzone created from the adjust_fillet.xdw CAD file and create the following curve:

Curve for the Curve Remachining Toolpath

Create a new Curve Remachining toolpath with the following parameters:Flat cutter, Body Radius: 5



Tolerance: 0.01Vertical Lead-ins

Curve Machining Z Machining

Curve Machining Z Movement (Curve Remachining)

Now you have to define the specific parameters

Curve Selection

Click on the <None> button of the Curve Selection parameter and select the appropriate curve.

Selection Points

You specify the side of the specified curve(s) to be machined by indicating a single entry point for each curve which shouldbe situated on the appropriate side of the curve. The distance of the entry point from the curve is not important except incases where there is more than one curve to machine. You should take care when specifying entry points that there can beno ambiguity concerning the curve to which the entry point should apply.

For our example, do not specify any entry point.


For our example, set both stock values to 0.


For our example, set both values to 0.

�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Curve Remachining" �3.8 - Curve Remachining


Cut Link Distance

You can control the number of Retracts made by means of the Cut Link Distance parameter. If the distance between twosections of a pass is less than the Cut Link Distance specified then no retract move is carried out and the cutter links thetwo sections of the pass.

For our example, keep the default value.

Curve Remachining

You specify the radius of a reference cutter larger than the actual cutter to be used for machining and the applicationautomatically calculates the areas with rest material where the reference cutter was unable to go.

1 Curve

2 Reference Cutter

3 Remachining Cutter

4 Rest Material

5 Material removed by Remachining Cutter

You can also add an Extension Distance to the toolpath to make sure that the corner is fully machined.

For our example, enter 10 in the Reference Radius field and do not add any Extension Distance.

Cutter Compensation

1. For our example, keep the default Cutter Compensation parameter.



Curve Remachining Toolpath

Make a copy of this toolpath and define a 2mm Extension Distance.

If you display both toolpath with different colors, you should the same differences as illustrated below:



Curve Remachining Toolpaths: Extension Distance

In the example above, you can see the first toolpath (1) and the second toolpath (2) with the extension distance.

3.8.2 - Curve Machining with Multiple Passes – Defining Existing Stock

When you program a curve machining toolpath with the Multiple Passes option, you can activate the Reduce Air Cutsoption in order to avoid wasteful air cuts.

WorkNC allows you to specify a Stock value when the Reduce Air Cuts option is activated. This is useful when you programa curve machining toolpath on a part that is semi-finished.

1. To illustrate this, create a new workzone from the Mulit-sided_part.xdw CAD file.

2. Create a new curve as illustrated below:

Curve to Machine

Let’s suppose that you want to program a Tangent to Curve machining toolpath based on this curve.

1. Create a Tangent to Curve toolpath with the following parameters:Flat cutter, Body Radius: 3Tolerance: 0.1Lateral Stock Allowance: 0



Curve Machining Z Movement for Toolpath 1


3. Click on the <None> button of the Curve Definition option, select the appropriate curve and validate.



Tangent to Curve: Reduce Air Cuts Option Deactivated

The toolpath shows a large number of unnecessary passes. Since we have not activated the Remove Air Cuts option, theapplication takes into consideration the value of the Total Machining Depth parameter.

5. Make a copy of the toolpath and this time activate the Reduce Air Cuts option.



Curve Machining Z movement for Toolpath 2



Tangent to Curve: Reduce Air Cuts Option Activated

This time, the toolpath starts machining at the level of the vertical surface.Now let’s suppose that you still have 10 mm of Stock remaining on the part.

7. Make a copy of the toolpath and this time enter 10 in the Existing Stock field below the Reduce Air Cuts option.

Curve machining Z Movement for Toolpath 3





Tangent to Curve: Reduce Air Cuts with Existing Stock

This time the toolpath starts machining 10 mm higher than the vertical surface, thus respecting the Existing Stock valuedefined in the toolpath parameters.

3.9 - ChamferingThe Chamfering toolpath has been designed to quickly machine chamfers on a part. It can be programmed with curves onexisting chamfers on the part, or by selecting edges to create the chamfers directly in the geometry.

3.9.1 - Programming a Chamfering Toolpath

To illustrate this, we are going to use the Die_flats_machining workzone.

We are going to program a series of toolpaths on an existing chamfer and on an edge of the part.

Chamfer and Edge to Machine

Existing Chamfer

1. Create a new Chamfering toolpath with the following parameters:Stock Allowance: 0Tolerance: 0.01

2. Define the following conical flat cutter and validate.The Conical Angle defined here is 30° , which corresponds to the draft angle of the chamfer.



Conical Flat Cutter

Now you have to define the Chamfer Machining Parameters:

1. Click on the button of the Chamfer Machining Parameters section.


Chamfer Parameters Dialog Box

2. Click on the <None> button of the Curve option and create a curve on the top edge of the chamfer:

�XE "Curve Machining Toolpaths" �3 - Curve Machining �XE "Chamfering" �3.9 - Chamfering


Curve at the Top of the Chamfer

3. Specify the curve position on the chamfer. In our example, the curve is positioned on the top edge of the chamfer, soactivate the Top option.

Determining the Side of the Curve to Machine

You can click on the <None> button of the Side of Curve to Machine option and click on a point to indicatewhich side of the curve is to be machined. This may be useful when there is a pocket on the other sidechamfer to machine (see picture below).

Side of the Curve to Machine

4. For our example, do not click any side of curve to machine.

5. In the Lateral Offset field, specify the distance over which the tool will enter the geometry. This distance is calculatedbetween the edge of the chamfer and the border of the non-cutting part of the tool.



Lateral Offset

Here, we do not want the tool to enter the geometry, so do not enter any value in the Lateral Offset field.

6. In the Top Overlap field, specify the distance between the top of the cone and the curve.

Top Overlap

The minimum value is 0.200 mm and the maximum value must be equal to the Conic Length of the tool. For our example,enter the minimum value.

7. Define the number of passes of the toolpath:Activate the Single Pass option so that the toolpath execute only one pass.Activate the Z Step option to define several passes above the curve. In this case, indicate the Stock to Remove in Zand the Z Step values.

For our example, activate the Z Step option, enter 10 in the Stock to Remove in Z field and 5 in the Z Step field.

Z Step Definition






Chamfering Toolpath with Z Steps

Now let’s see how to program the same toolpath with the bottom curve of the chamfer:

1. Make a copy of the toolpath and open the Chamfer Parameters dialog box for the copy.

2. Click on the button of the Curve option and create a curve at the bottom of the chamfer:

Curve at the Bottom of the Chamfer

3. This time activate the Bottom option to specify the curve position.



Curve Position: Bottom of the Chamfer

4. In the Z Offset field, specify the distance over which the tool will enter the geometry in the Z axis.

Z Offset

For our example, do not enter any value in the Z Offset field.

5. In the Bottom Overlap field, specify the distance between the curve and the bottom of the cone.



Bottom Overlap

The minimum value is 0.200 mm and the maximum value must be equal to the Conic Length of the tool. For our example,enter the minimum value.

6. Define the number of passes. Let’s suppose that you want to define lateral passes.Activate the Lateral Step optionEnter 10 in the Lateral to Stock to remove field and 5 in the Lateral Stepover field.

Lateral Step Definition




Chamfering Toolpath with Lateral Steps



Edge of the Part

If the chamfer is not created in the CAD file, you can create a curve on the edge of the part and make the tool enter thegeometry.

1. Create a new Chamfering toolpath.

2. Define a new tool as illustrated below:

3. Open the Chamfer Parameters dialog box.

4. Click on the button of the Curve option and create a curve on the following edge of the part:

Curve on the Edge of the Part

5. Activate the Corner option to specify that the curve is on an edge of the part.

Curve Position: Corner

6. In the Dimension field, enter the dimension of the chamfer.



Chamfer Dimension

7. Define the cutter position. For our example, activate the Top Overlap option and enter the minimum value (0.2 mm).

8. Activate the Single Pass option and click OK to validate.



Chamfering Toolpath on the Edge



4 - Flats and Walls Machining ToolpathsThese toolpaths are available in the 2 ½-Axis Toolpaths tab of the Toolpath Strategy dialog box.

Flats and Walls Machining Toolpaths in the Toolpath Strategy Dialog Box

4.1 - Manual 2DThe Manual 2D toolpath allows you to create your own toolpath trajectory. It is very useful on small flat surfaces that needremachining, for example.

4.1.1 - Programming a Manual 2D Toolpath

To illustrate this, we are going to use the Flats_walls_machining workzone.

We are going to create a toolpath on the following surface:



Surface for the Manual 2D Toolpath

Creating the Toolpath

1. Create a new Manual 2D toolpath.

The only specific parameter for this toolpath is Trajectory.

2. Click on the button in the Trajectory section.


Manual 2D Toolpath Creation Dialog Box

�XE "Flats and Walls Machining Toolpaths" �4 - Flats a �XE "Manual 2D" �4.1 - Manual 2D


Creating/Selecting a Tool

The Tool section of the dialog box allows you to create a tool or select it from the Tool Library. It also allows you todefine/select a tool holder from the Holder Library.

Here we are going to create a new tool.

1. Click on the New Tool button.

2. Select a flat cutter and validate.

3. Define a 25 mm diameter for the tool and validate.

Clicking on the Toolpath Point

1. Click on the surface you want to machine.

2. Click on the start point of your toolpath as illustrated below. By default, the Viewing Area displays a preview of the tooldiameter so that you can position the tool properly and avoid colliding with the geometry.

Start Point for the Toolpath

3. Click on the next point of the toolpath as illustrated below.

2nd Point of the Toolpath

The application uses the position of the first clicked point and help you following a straight direction. This is due to the Try to

magnetize option ( icon) which is activated by default. Here, the tool preview is displayed in red to indicate that thetrajectory is perpendicular to X axis.

4. Click on the next point of the toolpath as illustrated below.



3rd Point of the Toolpath

Here, the tool preview is displayed in green to indicate that the trajectory is perpendicular to the Y axis.

The Try to magnetize option also allows you to quickly define trajectories with 45° orientation against the Y or X axis. In thiscase, the tool preview is displayed in pink.

45 Degrees Orientation

5. Click on 2 other points so as to obtain the following preview.

Last Point of the Toolpath

6. Click on the End button in the dialog box or right click in the Viewing Area to validate.



Toolpath Preview

The different segments are listed in a block in the Blocks section of the dialog box.

You can create new segments on another surface, provided that it is a coplanar surface. The segments will be stored in anew block as part of the same toolpath.

When clicking on the toolpath points, you can click on the various icons below the Blocks section to activate/deactivate thedisplay of helping elements in the Viewing Area:

Allows you to show/hide the toolpath grid on the selected surface.

Allows you to show/hide toolpath preview elements.

Allows you to show/hide the preview of the toolpath trajectory.

Allows you to show/hide the view of the corresponding toolpath.

Allows you to show/hide the circle preview of the tool on the clicked points.

Allows you to show/hide the 2D sweeps.

You can also show or hide the tool and the tool holder by clicking on the corresponding buttons at the top of the dialog box.

You can remove segments from the block by selecting them in the list and clicking on the Delete Selection button or byclicking on the Delete all button to remove all the segments.

By default the trajectory followed by the toolpath is straight (Segment button activated) but you can define circulartrajectories by clicking on the Arc button.

You can also create approach and rapid movements by clicking the Approach and Fast buttons.



Defining the Toolpath Parameters

1. Define the Stock Allowance for the toolpath in the Allowance field.For our example, keep the default value.

2. Enter the total machining depth in the Z Depth field, for our example 80.

3. Enter 10 in the Delta Z field.

4. Keep the default Approach and Retract values.




Manual 2D Toolpath

4.2 - Die Flats RoughingThe Die Flats Roughing toolpath has been designed to rough flat surfaces on stamping tools. The basic idea of this strategyis trying the different parameters until obtaining a suitable toolpath on a flat surface. Once you have obtained the requiredtoolpath, you can quickly generate copies of it and machine similar planar surfaces on your part, thanks to the Multiple FlatSurface Machining function.The machining zone of this toolpath is based on a surface selection. Depending on your machining strategy, you canprogram this toolpath on the existing Stock Model for the whole part or use a virtual stock model calculated around tosurface(s) to machine.

4.2.1 - Programming a Die Flats Roughing Toolpath


We are going to program a series of toolpaths in the surfaces highlighted in the picture below:



Surface Selection for Die Flats Roughing

1. Create a new Die Flats Roughing toolpath with the following parameters:Flat cutter, Body Radius: 20Stock Allowance: 1Tolerance: 0.1Stepover: 10

2. Define the Machining Zone of the toolpath.Here we need to define a surface selection. As in the picture below, use the following surface selection to create asurface list:

Surface Selection for the Machining Zone Definition

Now you have to configure the Flat Surface Parameters:

Click on the button of the Surface Machining Parameters section.


�XE "Flats and Walls Machining Toolpaths" �4 - Flats a �XE "Die Flats Roughing" �4.2 - Die Flats Roughing


Flat Surface Parameters Dialog Box

Parameter Explanations

Remember that you can activate the check box at the bottom of the dialog box to extend it and obtaingraphical illustrations for the different parameters.

Let’s see how to use the different parameters of this dialog box:

Stock Definition

These parameters allow you to select the type of stock to be machined. You can use the Stock Model for the whole part ordefine a virtual stock based on a casting, the flat surfaces to machine or the top of the walls near the surfaces to machine.

Using the Stock Model implies longer calculation times. Using the virtual stock implies that you know exactly the amount ofstock to remove.

1. For our example, activate the Use Global Stock Model option and click OK to validate.


3. Initialize a 3D stock model (Solid Block) and validate.


Die Flats Roughing: Global Stock Model



Since we have chosen to use a stock model for the whole part, the toolpath has generated several passes.

1. Make a copy of this toolpath and open the Toolpath Parameters menu of the copy.

2. Open the Flat Surface Parameters dialog box and activate the Relative to Top of Wall option.

3. Enter 20 in the Stock Thickness field and validate.



This time, the toolpath has started 20 mm above the top of the walls (above picture on the right).


2. Open the Flat Surface Parameters dialog box and activate the Relative to Flat Surface option.



This time, the toolpath has started 20 mm above the flat surface (above picture on the right).


2. Open the Flat Surface Parameters dialog box, and activate the Virtual Casting option.





Die Flats Roughing: Virtual Casting

When you activate this option, the application simulates a virtual casting model around the surface(s) to machine.

Machining Domain

In addition to the Machining Zone parameters, you can define other parameters to extend or not the Machining Domainover the surfaces to machine. By extending the Machining Domain of the toolpath, you can remove the stock that may existon the edge of the surface to machine.

By default, the Auto option is activated below the Machining Domain Extension field, allowing you to extend the MachiningDomain with the body radius of the tool.

Moreover, you can define the Maximum Air Cut Distance value, which allows you to enter the size of the holes that have tobe ignored for machining.

To illustrate this, we are going to program a series of toolpath on the following surface:

Surface Selection for the Machining Zone

1. Create a new toolpath and make a new surface selection to modify the machining zone as required.

2. Open the Flat Surface Parameters dialog box and deactivate the Auto option below the Machining Domain Extensionfield.





No Machining Domain Extension


5. Open the Flat Surface Parameters dialog box and activate the Auto option below the Machining Domain Extensionfield.



Extended Machining Domain

This time, toolpath has generated one more pass outside the surface to machine on the center hole.

Let’s suppose that you want the toolpath to ignore the hole:


2. Open the Flat Surface Parameters dialog box and activate the Maximum Air Cut Distance option.You can then enter the size of the holes that have to be ignored. This can be useful if the surface to machine hasseveral holes of different sizes and you want to ignore only holes of a given dimension.

3. For our example, activate the Ignore all Holes option.This allows you to ignore all the holes on the selected surface, whatever their size is.





Ignored Hole

This time, the toolpath has ignored the center hole and removed the stock over this hole.

Lateral Stock Allowance

These parameters allow you to determine the Stock Allowance for the walls. By default it is the Same as for Flat Surfaces.But you can activate the Different Stock Allowance option and define another value for the walls.




Lead-in Options

These parameters allow you to ensure safe lead-in movements and prevent the tool from colliding with the geometryoutside the Machining Domain.

Min. Clearance between Stock & Cutter: this field allows you to define the minimum clearance distance betweenthe stock and the cutter.

Maximum External Approach Length: this field indicates an offset value of the Machining Domain. The toolpathcalculations will search for secured areas for lead-in movements within this offset domain.

Multiple Flat Surface Machining

Once you have obtained the appropriate toolpath, you can quickly generate a series of similar toolpaths to machine a largenumber of flat surfaces, together with their corresponding views if the selected surfaces are not on the same plane.

1. Right click on the toolpath and select Multiple Flat Surface Machining.

Multiple Flat Surface Machining Activation

2. Select the flat surfaces to machine and validate.

3. Run the toolpath calculations.

Die Flats Roughing on Multiple Flat Surface Selection



4.3 - Die Flats FinishingThe Die Flats Finishing toolpath has been designed to finish flat surfaces on stamping tools. As the Die Flats Roughingtoolpath, it contains various parameters which allow you either to improve the quality of the generated toolpath or to reducecalculation time.

Once you have obtained the required toolpath, you can quickly generate copies of it and machine similar planar surfaces onyour part, thanks to the Multiple Flat Surface Machining function.

4.3.1 - Programming a Die Flats Finishing Toolpath


We are going to program a series of toolpaths in the surfaces highlighted in the picture below:

Surface Selection for Die Flats Finishing

1. Create a new Die Flats Finishing toolpath with the following parameters:Flat cutter, Body Radius: 20Stock Allowance: 0Tolerance: 0.01Stepover: 10Vertical Lead-insCorner Smoothing Radius: 0

2. Define the Machining Zone of the toolpath.Here we need to define a surface selection. As in the opposite picture, usethe following surface selection to create a surface list.

Now you have to configure the Flat Surface Parameters:



Click on the button of the Surface Machining Parameters section.


Flat Surface Parameters Dialog Box

Parameter Explanations

Remember that you can activate the check box at the bottom of the dialog box to extend it and obtaingraphical illustrations for the different parameters.

Let’s see how to use the different parameters of this dialog box:

Stock to Remove

These parameters allow you to define an amount of stock to remove and the areas (walls or flat surfaces) from which thisstock has to be removed.

The amount of stock to be removed is defined in the Stock Thickness field.

For our example, make sure that the Stock Thickness is set to 0.

You can decide whether the stock has be removed from the top of the walls (Relative to Top of Wall) that may be near thesurface to machine or from the flat surface to machine (Relative to Flat Surface).

For our example, make sure the Relative to Flat Surface option is activated.

�XE "Flats and Walls Machining Toolpaths" �4 - Flats a �XE "Die Flats Finishing" �4.3 - Die Flats Finishing


Areas to Machine

Activate the Machine Flats or Machine Walls options, depending on the type of surface that you want to machine (flatsurfaces, walls of a pocket, etc.).For our example, since we are machining a flat surface, make sure that the Machine Flats option is activated.

Machining Domain

In addition to the Machining Zone parameters, you can define other parameters to extend or not the Machining Domainover the surfaces to machine.

The Machining Domain Extension field allows to extend the toolpath outside the surfaces to machine. Activating the Autooption allows you to extend the Machining Domain by the body radius of the tool.

1. For our example, deactivate the Auto option and enter 0 in the Machining Domain Extension field.

2. Click OK to validate the parameters and run the toolpath calculations.


Die Flats Finishing: no Extension


2. Open the Flat Surface Parameters dialog box and activate the Auto option under the Machine Domain Extension field.





Die Flats Finishing: Machining Domain Extension

This time the toolpath executes one pass on the edge of the selected surface in order to extend the Machining Domain bythe body radius of the tool.


2. Open the Flat Surface Parameters dialog box and activate the Generate Outer Pass option.



Die Flats Finishing: Outer Pass Generated


2. Open the Flat Surface Parameters dialog box and activate the Extend Interior of Domain option.

3. Click OK to validate the parameters and run the toolpath calculations.




Die Flats Finishing: Interior of Domain Extended


These parameters allow you to define a stock allowance to the walls that may be near the flat surface selection.

Same as for Flat Surfaces: allows you to apply the Stock Thickness value.

Different Stock Allowance: allows you to apply another stock value to the walls.

For our example, keep the default configuration.

Lead-in Options

These parameters allow you to ensure safe lead-in movements without collision.

Security Distance Use this field to define the security distance value.

From Stock Model Activate this option to apply the security distance from the stock model.

From all Geometry Activate this option to apply the security distance from the whole geometry.

From Planar Surfaces Activate this option to apply the security distance from the flat surfaces only.

From Walls Activate this option to apply the security distance from the walls only.

Maximum ExternalApproach Length

Use this field to indicate an offset value of the Machining Domain. The toolpath calculationswill search for secured areas for lead-in movements within this offset domain.

Machining Domain Simplification

The Die Flats Machining toolpath offers additional option to simplify the Machining Domain and generate a smoothertoolpath.


2. Open the Flat Surface Parameters dialog box and click on the Extra button.




Flat Surface Parameters Second Dialog Box

3. Activate the Machine Domain Simplification option.

Now you have to define the simplification method.

Simplify to the Bounding Box: allows you to simulate a bounding box around the surface selection to generateregular passes.

Simplify with a Diameter: allows you to simulate protected areas with a given diameter in order to reduce air cutsoutside the surface selection.

1. Activate the Simplify to the Bounding Box option and click OK to validate.



Simplification with a Bounding Box


2. Open the Flat Surface Parameters dialog box and click on the Extra button.

3. Activate the Simplify with a Diameter option and validate.





Simplification with a Diameter

Stamping Die Base

These options allow you to configure stamping die machining parameters and define how the wide and narrow areas will bemachined.

To illustrate this, we are going to use the bottom surface of the part:

Surface Selection for Stamping Die Base

1. Create a new Die Flats Finishing toolpath with the following parameters:Flat cutter, Body Radius: 31.5Stock Allowance: 0Tolerance: 0.01Stepover: 40Corner Smoothing Radius: 0

2. Define the view and the surface selection for the Machining Zone by clicking on the bottom surface.

3. Click on the button of the Surface Machining Parameters section and define the Flat Surface Parameters as illustratedbelow:



Flat Surface Parameters

4. Click on the Extra button.

5. Configure the Machine Domain Simplification parameters as illustrated below:

Machining Domain Simplification and Stamping Die Base Options

6. Activate the Stamping Die Base option.

7. Define the Narrow Area Maximum Width in the corresponding field.Activate the Auto option to automatically set this value to the tool diameter.

Every area whose width is inferior to this value will be considered as a narrow area.



8. Activate the Machine Wide Areas only option.



Only Wide Areas Machined

The toolpath has ignored the areas at the center of the surface because they are considered as narrow.

Make a copy of this toolpath and activate the Machine Narrow Areas only option for the toolpath copy.


Only Narrow Areas Machined

This time the toolpath has ignored the wide area of the surface.

Make a copy of this toolpath and activate the Machine Wide and Narrow Areas option for the toolpath copy.




Wide and Narrow Areas Machined

This time the toolpath has machined the whole surface.

Morphing

These parameters allow you to change the order of the passes.

Morphing Parameters

Below are examples of the same surface machined with the 3 Morphing options. The arrows illustrate the direction of thetoolpath when simulating.

From Exterior to Interior From Interior to Exterior Middle to Exterior the Middle to Interior



Multiple Flat Surface Machining

Once you have obtained the appropriate toolpath, you can quickly generate a series of similar Die FlatsFinishing toolpaths. You just have to right click on the toolpath and select Multiple Flat Surface Machining.

4.3.2 - Defining Radial Stepovers for the Die Flats Finishing Toolpath

You can define Radial Stepovers with the Die Flats Finishing toolpath. This option is available when you activate the Lacemachining cycle.


We are going to program a toolpath in the surfaces highlighted in the picture below:

Surface Selection for Die Flats Finishing

1. Create a new Die Flats Finishing toolpath with the following parameters:Flat cutter, Body Radius: 20Stock Allowance: 0Tolerance: 0.01Stepover: 10Vertical Lead-insCorner Smoothing Radius: 0Machining Cycle: Lace, Parallel to Y direction

2. Define the Machining Zone of the toolpath.Here we need to define a surface selection. As in the opposite picture, use thefollowing surface selection to create a surface list and a view.


The Cutter Movements dialog box is displayed.

4. Activate the Radial Stepovers option in the Stepovers section.



Now, you have to define the Radial value in the adjacent field.

User defined values can be between 0 and the Stepover value x 0.5.

5. For our example, activate the Auto option.This allows you to set the Radial value to the Stepover value x 0.5.

Radial Stepovers Defined


7. Define the following Flat Surface Parameters:



Flat Surface Parameters



Die Flats Finishing Toolpath with Radial Stepovers

4.4 - Ignoring Surfaces that hide the Surfaces to MachineWhen programming a Die Flats Roughing or a Die Flats Finishing toolpath, you have the possibility to ignore the surfacesthat are located above the surfaces to machine in the machining axis.


We are going to program a Die Flats Finishing toolpath on the following surfaces:



Surfaces to Machine

1. Create a new Die Flats Finishing toolpath with the following parameters:Flat cutter, Body Radius: 20Stock Allowance: 0Tolerance: 0.01Stepover: 10Vertical Lead-insCorner Smoothing Radius: 0

2. Create the required view and make the required surface selection to define the Machining Zone.

3. Validate and run the toolpath calculations.


Incomplete Toolpath

The toolpath is incomplete. If you show a right view of the part, you can see that some other surfaces hide the machiningzone of the toolpath.

To ignore these surfaces, proceed as follows:

1. Open the Toolpath Parameters menu.

2. Click on a icon in the Machining Zone section.

3. In the Machining Zone dialog box, activate the Ignore Surfaces hiding Surfaces to machine option.

�XE "Flats and Walls Machining Toolpaths" �4 - Flats a�XE "Ignoring Surfaces that hide the Surfaces to Machi


Machining Zone Dialog Box: Ignore Surfaces hiding Surfaces to machine

You can choose to ignore the surfaces that completely or partially hide the surfaces to machine.

4. For our example, keep the Completely hiding option activated.




Complete Toolpath

This time, the toolpath is complete.

Collisions with the Machine

You have to be very careful when using this option. We highly recommend that you simulate thetoolpath with the machine displayed in the Viewing Area to make sure that there is no collisionbetween the ignored surfaces and the machine.



4.5 - Wall Plunge MachiningThe Wall Plunge Machining toolpath has been designed to machine vertical surfaces with plunging trajectories. It is used tomachine surfaces that cannot be reached with a Tangent to Curve toolpath.

4.5.1 - Programming a Wall Plunge Machining Toolpath


Wall to Machine

1. Create a new Wall Plunge Machining toolpath with the following parameters:Bull-nose cutter, Body Radius: 5 – Corner Radius: 1Stock Allowance: 0Tolerance: 0.01Stepover: 2

2. Define the Machining Zone of the toolpath.Here you just need to select the vertical surface to machine.

Now you have to configure the Wall Machining Parameters:

Click on the <None> button in the Wall Machining Parameters section.


Curve Selection Dialog Box



Curve Definition

This toolpath is based on a curve selection to define the bottom and the size of the wall to machine. This dialog box allowsyou to create this curve to machine or to simulate it by selecting the planar surface at the bottom of the wall to machine orby selecting wall itself.

1. For our example, activate the Wall(s) Selection option since you have selected a vertical surface to define theMachining Zone.




Wall Plunge Machining: Wall Selection

Let’s see how to machine the same wall by defining a curve:

1. Make a copy of the toolpath and open the Toolpath Parameters menu of the copy.

2. Click on the icon in the Surface Selection option.

3. Open the Curve Selection dialog box.

4. Click on the <None> button and create the following curve:

�XE "Flats and Walls Machining Toolpaths" �4 - Flats a�XE "Wall Plunge Machining" �4.5 - Wall Plunge Machi


Curve for Wall Plunge Machining




Wall Plunge Machining: Curve Selection

The result is the same. Now let’s see how to extend the machining domain of the toolpath.

Extensions

1. Open the Toolpath Parameters menu of the last toolpath.


The Lead-in Extension field allows you to extend the machining domain on the side where the toolpath starts plunging (inour case the right side of the wall).

The Lead-out Extension field allows you to extend the machining domain on the side where the toolpath finishes plunging(in our case the left side of the wall).

The Minimum Z (Offset from Curve) field allows you to define an offset distance from the curve. A positive value will forcethe toolpath to stop before reaching the curve. A negative value will force the toolpath to stop beyond the curve.

The Use Minimum Z of Curve option allows you to force the toolpath to stop when reaching the minimum Z level of thecurve.

Lead-in = Lead-out

To be able to enter different values in the Lead-in Extension field and Lead-out Extension field, you have todeactivate the Lead-in = Lead-out option.

3. For our example, enter 5 in the Lead-in Extension field and activate the Use Minimum Z of Curve option.



Machining Domain Extension




Wall Plunge Machining: Extensions

The toolpath is now extended on both sides of the wall and all passes plunge down to the minimum Z level of the curve.

Other Options

1. Open the Toolpath Parameters menu of the last toolpath.


The Machine Curves Separately option is activated by default. When the walls to machine have several bottom curves withdifferent Z levels, activating this option allows you to take all the different Z levels into account.

The Backstep option allows you to force the tool to step back when reaching the bottom of the wall to machine. The tool isnot in contact with the surface when going to the next pass.



Collisions

Make sure that no geometry is located within the Backstep distance to avoid any collision.

3. For our example, enter 5 in the Backstep field and validate.


Wall Plunge Machining: Backstep

Machining Walls from a Flat Surface Selection


2. Click on the <None> button of the Surface Selection option and select the following surface:

Flat Surface Selection


4. Activate the Planar Surface(s) Selection option and validate.



Curve Definition from Flat Surface Selection



Wall Plunge Machining from a Flat Surface Selection

The toolpath has automatically identified the walls to machine according to the flat surface selection.

4.5.2 - Defining a Lace Cycle for the Wall Plunge Machining Toolpath

You can define a Lace cycle, which allows you to reduce the number of retracts for this toolpath. You can use this cycle forfinishing phases, where there is a small amount of rest material on the wall to machine. It is not recommended for semi-finishing phases.


Walls to Machine



1. Create a new Wall Plunge Machining toolpath with the following parameters:

Bull-nose cutter, Body Radius: 5 – Corner Radius: 1

Stock Allowance: 0

Tolerance: 0.01

Stepover: 2

2. Define the Machining Zone of the toolpath.Here you just need to select the vertical surfaces to machine.

3. Click on any button in the Machining Parameters section.

4. Activate the Lace and click OK to validate.

5. Click on the <None> button in the Curve Selection section.

6. For our example, activate the Wall(s) Selection option since you have selected a vertical surface to define theMachining Zone.




Wall Plunge Machining with Lace Cycle

This cycle is compatible with the Backstep option:



3. For our example, enter 2 in the Backstep field and validate.


Wall Plunge Machining with Lace Cycle and Backstep

Table Of Contents

Copyright 2017 © Sescoi International I WNC17R2_EN_2D - 2D Toolpaths

Index33-Axis Roughing Toolpaths, 32CChamfering, 161Corner Smoothing, 62Creating a New Workzone in the CAM Mode, 4Creating a Rib Axis, 20Creating a Text along a Curve, 25Creating a Text for Engraving Purposes, 28Creating a Workzone in the CAD Mode, 9Curve Machining Toolpaths, 82Curve Machining with Multiple Passes – Defining ExistingStock, 156Curve Machining Z Movement, 83Curve Remachining, 150Cusp Height, 61Cut Link Distance, 58Cutter Compensation, 131Cutter Details, 36Cutter Movements, 50DDefining a Lace Cycle for the Wall Plunge MachiningToolpath, 239Defining Default Directories for Workzones and CAD Files, 14Die Flats Finishing, 200Die Flats Roughing, 187Displaying Toolpaths, 71FFacing, 106Flat Surface Re-roughing, 60Flats and Walls Machining Toolpaths, 178GGlobal Rough/Rerough, 33IIgnoring Surfaces that hide the Surfaces to Machine, 224Initial Step, 65Initializing the Stock Model and Calculating the RoughingToolpath, 66Introduction, 1MMachining Order, 63Machining Parameters, 40Machining Zone, 35Manual 2D, 179NNC Machining Parameters, 45Number of Passes, 87OOn-Curve Engraving, 143On-Curve Engraving: Curve Offset with Multiple Passes, 147

Opening the Toolpath Parameters Menu of a Toolpath, 75Opening/Closing Workzones and CAD Files, 16PPocket Selection, 56Pocketing, 91Programming a Chamfering Toolpath, 162Programming a Compensation on the Profile, 136Programming a Curve Remachining Toolpath, 151Programming a Cutter Center Compensation, 132Programming a Die Flats Finishing Toolpath, 201Programming a Die Flats Roughing Toolpath, 188Programming a Facing Toolpath, 107Programming a Global Rough/Rerough Toolpath: SpecificParameters, 53Programming a Global Rough/Rerough Toolpath: StandardParameters, 34Programming a Manual 2D Toolpath, 180Programming a Minimum Compensation, 138Programming a Pocketing Toolpath, 92Programming a Pocketing Toolpath with Open Pockets, 97Programming a Reroughing Toolpath, 80Programming a Rib Machining Toolpath, 103Programming a Tangent to Curve Toolpath, 111Programming a Wall Plunge Machining Toolpath, 229Programming an On-Curve Engraving Toolpath, 144Programming the Lead-in/Lead-out Parameters, 116, 146RRadial Stepovers for the Die Flats Finishing Toolpath, 219Reference Z, 85Reroughing, 79Reroughing Areas, 59Rib Machining, 102SSimulating with Cutter Center with Minimal Compensation, 140Start/End Z Level Options, 89Stock Parameters, 55TTangent to Curve, 110Tolerances, 47Tool Holder Collision Avoidance, 54UUpdating the Stock Model, 76Using the Curve Selection Options on the Tangent to CurveToolpath, 125WWall Plunge Machining, 228Workzones, 3ZZ-Step, 49

获取 WorkNC 更多资讯：

1.关注 WorkNC 公众微信号：qh_worknc扫二维码，即刻获取更多信息及参与 WorkNC实时活动：

2.访问 WorkNC 官网：www.qianghu.com

WorkNC资料（产品手册、文档及视频教程、客户案例）下载：官网—>教程与案例—>下载中心

3、WorkNC 论坛：http://www.qianghu.com/bbsWorkNC技术问题咨询：官网—>论坛—> WorkNC强互工程师解答专区

上海强互信息科技有限公司上海市浦东新区新金桥路 1122 号方正大厦 1201、1202 室Tel: 021-50304630 Fax：021-50307213www.qianghu.comEmail：[email protected]

D:市场资料技术资料WorkNC 2017 R2 Word Files修改末尾原版...

Documents

Transcript of D:市场资料技术资料WorkNC 2017 R2 Word Files修改末尾原版...