Functional Molded Part Page 1 Functional Molded Part -...

Functional Molded Part

Overview

Conventions

What's New?

Getting Started

Entering the Functional Molded Part Workbench Defining the Main Shell Editing the Shell Properties Removing Volumes from the Part While Creating Walls Piercing the Main Shape Adding Strength to the Shelled Body Applying a Styling Surface Onto the Shelled Body Finalizing the Part Shape

User Tasks

Creating the Initial Part Shape Creating a Functional Body

Shape Features Shellable Feature Cavity Feature Added Feature Protected Feature Internal Feature Core Feature Prism Sweep Revolve Thick Surface External Shape

Shell Properties Functional Features

Cutout Pocket Boss Rib Rest Grill Reinforcement Push Pull Fitting

1Page Functional Molded Part Version 5 Release 13

Feature Modifiers Cut Remove Intersect

PowerCopy Creating PowerCopies Instantiating PowerCopies Saving PowerCopies into a Catalog

Workbench Description

Functional Molded Part Menu Bar Shape Features Toolbar Functional Features Toolbar Mold Design Properties Toolbar Feature Modifiers Toolbar

Glossary

Index


Overview

This book is intended for the user who needs to become quickly familiar with Functional Molded Part product.

This overview provides the following information:

● Functional Molded Part in a Nutshell

● Before Reading this Guide

● Getting the Most out of This Guide

● Accessing Sample Documents

● Conventions Used in this Guide

Functional Molded Part in a Nutshell

CATIA Functional Molded Part offers a new approach to developing 3D digital models, called "functional modeling." The objective of functional modeling is to enable product designers to focus on the functional goals and design constraints of their product. Capturing this information in the product model provides the information from which geometric form can be derived through the combination of behavioral features and a minimum of geometric construction. The end result is a significant reduction in the effort required to generate the 3D model by allowing more time for designers to focus on engineering issues, exploring alternative design approaches, and optimizing their design.

CATIA Functional Molded Part provides tools to create volumes and features that contain inherent behaviors and which interact. The behaviors capture different design functions, such as adding material, subtracting material, or protecting space. Because they contain inherent behaviors and they interact, they are called "functional volumes" and "functional features."

As a scalable product, Functional Molded Part can be used in cooperation with other current or future companion products such as Assembly Design and Generative Drafting.


Before reading this guide, you should be familiar with basic Version 5 concepts such as document windows, standard and view toolbars. Therefore, we recommend that you read the Infrastructure User's Guide that describes generic capabilities common to all Version 5 products. It also describes the general layout of V5 and the interoperability between workbenches.

You may also like to read the following complementary product guides:● Part Design User's Guide: explains how to create parts.

● Sketcher User's Guide: explains how to sketch 2D elements.

● Wireframe and Surface User's Guide: explains how to create wireframe geometry and surfaces.

Getting the Most out of this Guide

The Functional Molded Part User's Guide has been designed for users new to the application.

To get the most out of this guide, we suggest you start reading and performing the step-by-step tutorial Getting Started that provides an overview of what can be done with key functions.

Once you have finished, you should move on to the next sections describing and illustrating each functionarts. You can also take a look at the sections describing the Functional Molded Part Workbench at the end of the guide.

Accessing Sample Documents

To perform the scenarios, you will be using sample documents contained in the online/fm1ug/samples folder.

When samples belong to capabilities common to different products, those samples will be found in the online/cfyug/samples folder.

For more information on accessing sample documents, refer to Accessing Sample Documents in the Infrastructure User's Guide.

Conventions Used in this Guide

To learn more about the conventions used in this guide, refer to the Conventions section.

Before Reading this Guide


ConventionsCertain conventions are used in CATIA, ENOVIA & DELMIA documentation to help you recognize and understand important concepts and specifications.

Graphic Conventions

The three categories of graphic conventions used are as follows:

● Graphic conventions structuring the tasks

● Graphic conventions indicating the configuration required

● Graphic conventions used in the table of contents

Graphic Conventions Structuring the Tasks

Graphic conventions structuring the tasks are denoted as follows:

This icon... Identifies...

estimated time to accomplish a task

a target of a task

the prerequisites

the start of the scenario

a tip

a warning

information

basic concepts

methodology

reference information

information regarding settings, customization, etc.

the end of a task

functionalities that are new or enhanced with this Release.

allows you to switch back the full-window viewing mode.


This icon... Indicates functions that are...

specific to the P1 configuration



Graphic Conventions Used in the Table of Contents

Graphic conventions used in the table of contents are denoted as follows:

This icon... Gives access to...

Site Map

Split View mode

What's New?

Overview

Getting Started

Basic Tasks

User Tasks or the Advanced Tasks

Workbench Description

Customizing

Reference

Methodology

Glossary

Index

Text Conventions

The following text conventions are used:

The titles of CATIA, ENOVIA and DELMIA documents appear in this manner throughout the text.

File -> New identifies the commands to be used. Enhancements are identified by a blue-colored background on the text.

Graphic Conventions Indicating the Configuration Required

Graphic conventions indicating the configuration required are denoted as follows:


Use thismouse button... Whenever you read...

● Select (menus, commands, geometry in graphics area, ...)

● Click (icons, dialog box buttons, tabs, selection of a location in the document window, ...)

● Double-click

● Shift-click

● Ctrl-click

● Check (check boxes)

● Drag

● Drag and drop (icons onto objects, objects onto objects)

● Drag

● Move

● Right-click (to select contextual menu)

How to Use the Mouse

The use of the mouse differs according to the type of action you need to perform.


What's New?

New Functionalities

Push FeatureThis new command enables you to use functional volumes as tool bodies to deform a volume in another body by pushing into it.

Pull FeatureThis new command adds volume to a body by pulling volume around the outside of another body.

Fitting FeatureThis new command enables you to use a new or existing part to fit into another part in a different body.

Cut FeatureThis new command lets you cut material away from the part by using a surface or a plane.

Remove Feature This new command lets you modify a feature by removing a shape from it.

Intersect FeatureThis new command lets you compute the intersection of its shape with the feature you wish to modify.

PrismThe Draft both sides new option available from the Draft tab page lets you draft both opposite directions from the parting element.

Enhanced Functionalities

Functional BodiesYou can now create as many functional bodies as required to produce a part.

Shell PropertiesA new option displays a dialog box allowing you to manage the list of the selected faces

Grill FeatureThe display of settings has been improved in the Grill Definition dialog box. The Grill tab has been replaced with one tab dedicated to the boundary definition as well as another one dedicated to the rib definition.

Functional FeaturesThe Thru All new option provides a new way of defining lengths for protected prisms.

Functional FeaturesThe To Plane/Surface new option lets you select a plane or a surface to trim lengths in every prism definition.

Functional FeaturesAny external solid body or surface as shape definition

Functional FeaturesThe Draft tab page has been modified as follows:

❍ Now, if you wish to perform a draft operation, you need to set the Intrinsic to feature option.

❍ The possible options to define neutral elements have been renamed as Floor and Opening

Functional and Shape FeaturesCreation contextual commands are available from all selection fields to create the wireframe and surfacic elements you may need.

Power Copy


You can now use Functional features to create Power Copy elements.Copy/Paste

It is now possible to copy then paste a functional feature using the As Result With Link option: the feature is copied without its design specifications and the link is maintained between the reference and the copy. For information about the command, refer to Handling Parts in a Multi-Document Environment documented in Part Design User's Guide.


Getting Started

Before getting into the detailed instructions for using Functional Molded Part, the following tutorial aims at giving you a feel as to what you can do with the product. It provides a step-by-step exercise based on a realistic design scenario showing you how to use key functionalities for creating a plastic part.

The main tasks covered in this section are:

Entering the Functional Molded Part WorkbenchDefining the Main Shell

Editing the Shell PropertiesRemoving Volumes from the Part While Creating Walls

Piercing the Main ShapeAdding Strength to the Shelled Body

Applying a Styling Surface Onto the Shelled BodyFinalizing the Part Shape

All together, the tasks should take about ten minutes to complete. The final part will be a phone cap that will look like this:

Outside Inside


Entering the Functional Molded Part Workbench

This first task shows you how to enter the Functional Molded Part workbench.

The only pre-requisite for this task is to have a current CATIA V5 session running.

1. Select the Start -> Mechanical Design -> Functional Molded Part commands or click the Functional Molded Part icon

from the Welcome to CATIA V5 dialog box.

The Functional Molded Part workbench is displayed, ready to use. The commands for creating features are available to the

right of the window.


2. To perform this tutorial, open the Phone.CATPart document. For information on where sample documents are installed by default, see Accessing Documents in the Infrastructure User's Guide.


Defining the Main Shell

In the first task, you will create a shellable prism from a profile sketched in the Sketcher workbench.

Creating a shellable prism means ensuring that the geometry you are going to create can be shelled after you added material generated by other features.

1. Click the Shellable Feature icon .

The Shellable Feature dialog box that appears displays the Prism icon as the default

shape to be created.

2. Keep the default option and select Lateral Profile as the profile to be extruded.

The application previews the prism.

3. Enter 15mm in the First length field to define the feature length. The preview of the prism

changes dynamically as you change values.


4. Click the Direction tab to check that the default option fits your needs: as the Normal to

profile option is checked, the prism will be created normal to the sketch plane. Keep this option.

5. Click the Draft tab that enables you to optionally draft the prism.

6. Check the Angle option and enter 5 in the field to define the draft angle.

7. Click OK to confirm. The shellable prism is created and the application displays this feature in the

specification tree.

In a Nutshell

The Shellable capability creates geometry that will belong to the main shape of the part.

Shellable features can take on the shape of a prism, sweep, revolve, thick surface or even of an external shape.

To know more about this capability, refer to Cutout.


Editing the Shell Properties

In this task you will edit the thickness of the shellable prism you have just created and you will also remove one of its faces.

1. In the previous task, while adding the shellable prism in the specification tree, the application also created the Shell Properties.1 entity.

Double-click Shell Properties.1 and look at what it contains.

The Shell Properties dialog box displays a thickness value that applies to the prism.

2. Enter 1.5mm in the Thickness field to edit the default thickness.

3. Select the bottom face as the opening face.

If you select several faces, note that clicking the icon displays the Faces to remove dialog box that allows you to:

❍ View the list of all of the selected faces

❍ Remove any face clicking the Remove button

❍ Replace any face using the Replace button and selecting a new one in the geometry or the specification tree.

4. Click OK to confirm. The part now looks like this:

In a Nutshell

The Shell Properties dialog box lets you define the thickness of the part as well as its opening faces. The thickness value you enter will apply to all of the functional features in the same body that create walls, as well as to additional shellable volumes.


Removing Volumes from the Part While Creating Walls

The Cutout capability removes volumes from the part while creating walls. The area of the cutout is protected, which means that nothing can penetrate this area that is in the same body. Entities in other bodies can penetrate protected areas.

In this task, you will create two cutouts.

1. Click the Cutout icon .

The Cutout dialog box that appears displays the Prism icon as the default shape to be

created. Keep this option.

First Cutout

2. In the specification tree, select Cap Cutout as the closed profile to be used. The application

previews the cutout as well as two textual indicators for both limits:


3. In the Floor frame, enter 8mm in the Length field to define the location for the floor.

4. In the Opening frame, Enter -20mm in the Length field to define the location for the opening.

5. Check the With floor option.

6. Click the Draft tab.

7. Check the Angle field and enter -3 to define the draft angle value.

8. Click the Fillet tab to add a fillet to the cutout edges. 9. Enter 1mm for the floor's edge radius value.

10. Click OK to confirm. The first cutout is created:

Second Cutout

11. In the specification tree, select Screen Cutout as the profile to be used.

12. Enter 0mm in the Length field to define the floor location.

13. Enter -20mm in the Length field to define the opening location.


14. Uncheck the With floor option.

15. Click the Draft tab and enter -3 in the Angle field to define the draft angle value.

16. Click the Fillet tab and to define the lateral radius value, enter 5mm in the corresponding field.

17. Click OK to confirm. The second cutout is created:

The specification tree indicates these operations under the names of Cutout.1 and Cutout.2.

In a Nutshell

The Cutout capability protects the volume from material volumes in the same body penetrating into it and generates walls around this volume.

To know more about this capability, refer to Cutout.


Piercing the Main Shape

This task shows you how to create holes in the main shape by using the Protected Feature capability. You will create three protected prisms, that is areas within which no additional material created by other features within the same body can be added.

1. Click the Protected Feature icon .

The Protected Feature dialog box that appears displays the Prism icon as the default

shape to be created. Keep this option.

First Protected Prism

2. Select Key holes as the profile to be used.

3. Enter 20mm in the First length field.

4. Click the Direction tab to ensure that the direction of the features will be normal to the profile

plane.


5. As you do not need to draft the feature nor fillet its edges, simply click OK to create the

protected prism.

Second Protected Prism

6. To create the second protected prism, click the Protected Feature icon again.

7. Select HP Holes as the profile to be used.


9. Click the Direction tab to ensure that the direction of the features will be normal to the the

profile plane.

10. As you do not need to draft the feature nor fillets its edges, simply click OK to create the

protected prism.


Third Protected Prism

Now you will create a third protected prism that corresponds to the area reserved for the phone electronic mechanism.

11. Select Reserved Space as the profile to be used.



14. Click the Draft tab.

15. Set the first limit as the neutral element

16. Enter 3 degrees as the angle value.

17. Click OK to confirm.

The specification tree indicates these operations under the names of Protected Prism.1,

Protected Prism.2 and Protected Prism.3.

In a Nutshell

Creating a protected volume:

❍ generates no walls.

❍ material created by other features within the same body will not penetrate the protected volume.

To know more about this capability, refer to Protected Feature


Adding Strength to the Shelled Body

This task shows you how to add strength to the shelled body by using the Rib capability.

1. Click the Rib icon .

The Rib dialog box that appears displays the Prism icon as the default shape to be created.

Keep this option.

2. Select Internal Ribs as the profile to be used.

3. Enter 20mm in the Length field to define the first limit.

4. In the Wall frame, set the Enter thickness option. The Thickness field is now ungreyed. Keep

the default value, that is 1mm, to define the wall thickness. Wall thickness values can only by

positive (nonzero) values.

5. Click the Direction tab to ensure that the direction of the features will be normal to the profile


plane.

6. Click the Draft tab and set the Profile plane as the neutral element to be used for drafting the

rib feature.

7. Enter -1 in the Angle field to define the draft angle value.

8. Click OK to create the rib.

The specification tree indicates this operation under the name of Rib.1.

In a Nutshell

Ribs are typically applied inside of a shelled body.

To know more about this capability, refer to Rib.


Applying a Styling Surface Onto the Shelled Body

In this task, you will alter the part shape by cutting material away from it. To do so, you will use the Cut capability with a styling surface.

1. Click the Cut icon .

The Cut dialog box displays.

2. Select Top Surface as the cutting element.

3. Click any arrow to reverse the direction indicating which portion of material is to be kept. The

arrows must point toward the phone bottom face as shown here:


4. Click OK to cut the part and hide the cutting surface to enhance the result:

The specification tree indicates this operation under the name of Cut.1.

In a Nutshell

The Cut capability can be used to modify the shape of a functional feature with a styling surface.

To know more about this capability, refer to Cut.


Finalizing the Part Shape

To finalize the part shape, you will use one of the different commands available for filleting edges.

1. Click the Edge Fillet icon .

The Edge Fillet Definition dialog box appears.

2. Select the edge to be rounded, that is the top edge.

3. Enter 3mm in the Radius field to define the fillet radius value. The preview of the radius value

changes dynamically as you change values.

4. Click Preview to get an idea of what the fillet will look like.

5. Click OK to confirm. The final part looks like this:


In a Nutshell

Traditional Part Design dress-up features are available in the Functional Molded Part workbench command to let you finalizing the shapes of the parts.


User Tasks

Functional Molded Part is not history-based the way some traditional CAD systems are. Instead, it is behavior-driven, which means that the system is driven by the behavior of a model's parts, not the order of their introduction or regeneration. A behavior-driven modeling system means design elements can be introduced and re-executed freely at different stages in the design process.

For example, you can introduce a feature in a reserved space in your design even before the body exists to which the feature will eventually be applied. When the body is created, the feature will automatically be generated, and other affected entities will change accordingly. There is no need to backtrack through the design's history to update the rest of the affected entities.

History independence also reduces and, in most cases, eliminates feature failures and the typical work-arounds needed to reorder or reintroduce features at a specific position in the history tree of the design. Because Functional Molded Part does not impose history-based rules, the system is more flexible, and you can apply modeling operations wherever and whenever they are needed.

This section will explain and illustrate how to create various kinds of features. The table below lists the information you will find.

Creating the Initial Part Shape

Shape Features

Shell Properties

Functional Features

Feature Modifiers

PowerCopy


Creating the Initial Part ShapePrior to creating the initial shape of the part, you should be familiar with the following concepts:

● Shape Features and Functional Features

● Functional Bodies

● Functional Solids

● Shell Properties

Shape Features and Functional Features

To begin creating your part, you begin by adding shape features to the active body to create the initial shape of the part. Shape features represent any type of material as well as empty spaces. The different shape features interact in unique ways with each other and with the functional features. The key to modeling with functional volumes is to understand how the different types interact within a body.

Functional Bodies

Functional Bodies group shape features and functional features that combine to graphically represent the part of your document.

To help you structure your part, the application now lets you create as many functional bodies as needed. To know how to do that, refer to Creating a Functional Body.

The shape of a functional body is copied into a functional solid.

Functional Solids

A functional solid contains the geometrical result of a given functional body. Any Part Design command can be applied onto functional solids as shown in Finalizing the Part Shape of the Getting Started scenario where you fillet an edge.


Shell Properties

Each body contains a shell property that specifies the thickness of the walls in any shellable feature (one of the six shape feature types) in that body. The thickness can also be zero, thus the shellable volume would not be shelled. The shell property is easily changed at any time during the design process. For more, refer to Shell Properties.


Creating a Functional Body

When your CATPart document contains no functional bodies, the application creates a functional body as soon as you have created your first functional or shape feature. Later on, if you need to add other functional bodies to the specification tree, you need to explicitly specify this. In this task, you will learn how to create a new functional body.

Open any CATPart document provided in this guide. The following scenario is performed using the Cutout.CATPart document.

1. Select Insert -> Body.

A body is created. It is displayed in the specification tree and is set as the current body.

2. Create any functional or shape feature. For example, create a cutout feature. The cutout feature

is displayed in the specification tree in a new functional body and its result is placed into the new

body.


You can create as many functional bodies as required to produce a part.


Shape Features

What is a Shape Feature?

Shape features are the first entities you add to the active body to create the initial shape of the part. Shape features are made up of six types, which interact in unique ways with each other and with the functional features. Shape features represent any type of material as well as empty spaces.

When you create shape features with any of the Functional Molded Part capabilities, inherent in the resulting features is the concept of inside and outside. This is the way that most people view objects, which affects how they would use an object. In the same way, design elements need to be either inside or outside of the product model. Thus, Functional Molded Part provides features with an inherent behavior of existing inside or outside of a material feature within the same body. For example, the behavior of a Rib is to exist inside of a shelled material feature, and the behavior of a Reinforcement is to exist outside of a material feature. Because of this inherent behavior, features can be made before or after creating the shape feature to which they will be applied. Thus, there are no history dependencies.

Shape features are defined by how they are manifested and how they interact with the inside or outside of another shape feature. Depending on the type, a shape feature will do one or more of the following:

● Add material

● Subtract material

● Increase spatial volume

● Decrease spatial volume

● Protect a spatial volume

Therefore, when creating a shape feature that will intersect with another feature in the same body, you would select the volume type according to the results that you need.

Shape Feature Types

The following are the different shape feature types:

Shellable Feature

Cavity Feature

Added Feature

Protected Feature

Internal Feature

Core Feature


Shape TypesYou need to define a shape type when creating shape features (or certain functional features). To know how to create the five possible different shapes, refer to the following tasks:

Prism

Sweep

Revolve

Thick Surface

External Shape

When editing a shape feature based on a prism or a sweep, note that you can change the prism with a sweep and vice versa. Other types of changes are not allowed.


Shellable Feature

The Shellable command is very often used to create the main shape of the part. It creates a hollow feature you can open via the shell properties command. Shellable features can have different basic shapes: prism, sweep, revolve and thick surface.

The Shellable command also adds material volume to the outside of another material volume that it intersects within the same body, thus extending the boundaries of the volume, as well as increasing the internal spatial volume of a shelled volume. The added volume inherits the shell properties (wall thickness) of the body.

This task shows you how to create a shellable prism.

To perform this scenario, sketch a rectangle in the Sketcher workbench then return to the Functional Molded Part workbench.

1. Click the Shellable Feature icon .

Shellable features can have different shapes. The Shellable Feature dialog box that appears

displays the Prism icon as the default shape to be created.


2. If you prefer a different shape, click any of the other four shapes available. To know how to

create any of them, refer to the Sweep, Revolve or Thick Surface or External Shape tasks.

For the purposes of our scenario, keep the default option

3. Select the profile you wish to extrude. If no profile is defined, clicking the Sketcher icon

enables you to sketch the profile you need.

4. Create a basic prism as explained in the Prism task.

5. Click OK to confirm and create the shellable feature. Shellable Prism.X is added to the

specification tree in the FunctionalBody.X node. By customizing the view (use the Hidden edges

points option), you can notice that the prism is hollow. By default, the shellable feature has no

opening.


6. To open it, just double-click the Shell Properties node in the Specification tree or click the Shell

Properties command .7. For example, select the top face as the face to be removed and enter the value of your choice to

define the wall thickness.8. Click OK to confirm the operation. One face has been removed.

For more information, refer to Shell Properties.


Cavity Feature

The Cavity command adds material to the outside of another material volume that it intersects with in the same body.

This task shows you how to create a cavity.

Open the Cavity_Core.CATPart document.

1. Click the Cavity icon .

Cavity features can have different shapes. The Cavity Feature dialog box that appears displays

the Prism icon as the default shape to be created.

If you prefer a different shape, click any of the four shapes available. To know how to create any

of them, refer to the Prism, Sweep, Revolve, Thick Surface or External Shape tasks. For

the purposes of our scenario, keep the default option.


2. Select Sketch.2 as the profile you wish to extrude. If no profile is defined, clicking the Sketcher

icon enables you to sketch the profile you need.

3. In the Limits tab, enter these values:

First length=102mm

Second length=-6mm

4. Optionally, set the parameters and options you wish to make the shape more complex as

explained in Prism (or Sweep) page.

5. Click OK to confirm and create the cavity feature. Cavity Prism.X is added to the specification tree in the FunctionalBody.X node.


Added Feature

The Added Feature adds material to both the outside and inside of material volumes it intersects within the same body.

Open the Feature.CATPart document.

1. Click the Added Feature icon .

Added features can have different shapes. The Added Feature dialog box that appears displays

the Prism icon as the default shape to be created.


create any of them, refer to the Prism, Sweep, Revolve, Thick Surface or External Shape

tasks. For the purposes of our scenario, keep the default option.

3. Select Sketch.21 as the profile you wish to extrude. If no profile is defined, clicking the


Sketcher icon enables you to sketch the profile you need.

4. In the Limits tab, enter these values:

First length: 15mm.

Second length: 30mm.



6. Click OK to confirm and create the added feature. Added Prism.X is added to the specification

tree in the FunctionalBody.X node.


Protected Feature

The Protected Feature command creates areas into which no additional material can penetrate that is in the same body.

Open the Protected.CATPart document.

1. Click the Protected Feature icon .

Protected features can have different shapes. The Protected Feature dialog box that appears


If you prefer a different shape, click any of the other four shapes available. To know how to



2. Select Holes as the profile you wish to extrude. If no profile is defined, clicking the Sketcher



3. In the Limits tab, enter 20mm to define First length.



5. Check the Thick option that is available for the Prism, Sweep and Revolve shapes. This option

enables you to add material to both sides of the profile.

Three additional options display:

6. Enter 5mm in the Thickness1 field and click Preview. Thickness is added to the inside of the profile.

7. Enter 2mm in the Thickness2 field and click Preview. Thickness is added to the outside of the profile.

8. To add material equally to both sides of the profile, check Neutral fiber and click Preview to see the result. The thickness you defined for Thickness1 is evenly distributed: a thickness of 5mm has been added to each side of the profile.


9. Click OK to confirm and create the protected feature. Protected Prism.X is added to the specification tree in the FunctionalBody.X node.


Internal Feature

The Internal Feature command adds material only to the inside of another material volume that it intersects within the same body.


1. Click the Internal icon .

Internal features can have different shapes. The Internal Feature dialog box that appears





3. Select Sketch.21 as the profile you wish to extrude. If no profile is defined, clicking the


Sketcher icon enables you to sketch the profile you need.

4. In the Limits tab, enter 15mm to define First length and 20mm for Second length.



6. Check the Thick option that is available for the Prism, Sweep and Revolve shapes. This option

enables you to add material to both sides of the profile.


7. Enter 7mm in the Thickness1 field. Thickness is added to the inside of the profile.8. Enter 3mm in the Thickness2 field and click Preview. Thickness is added to the outside of the

profile.


9. To add material equally to both sides of the profile, check Neutral fiber and click Preview to see the result.

10. Click OK to confirm and create the internal feature. Internal Prism.X is added to the specification tree in the FunctionalBody.X node.


Outside Inside


Core Feature

The Core Feature command extends the internal shape of a cavity.

Open the Cavity_Core.CATPart document and create a cavity feature as explained in Cavity Feature.

1. Click the Core Feature icon .

Core features can have different shapes. The Core Feature dialog box that appears displays the

Prism icon as the default shape to be created.




3. Select Sketch.3 as the profile you wish to extrude. If no profile is defined, clicking the Sketcher



4. In the Limits tab, enter 102mm to define First length and 6mm for Second length.



6. Click OK to confirm and create the core feature. Core Prism.X is added to the specification tree in the FunctionalBody.X node.


Prism

This task shows you how to define a prism based on a closed profile.

To perform this scenario, sketch a rectangle in the Sketcher workbench then return to the Functional Molded Part workbench.

1. Click any icon requiring a shape definition. For example, launch the Shellable capability .

The Prism is the default shape proposed by the application.

2. Select the profile you wish to extrude. The application previews a prism.

If you launch the command with no profile previously defined, just access the Sketcher by

clicking the icon available in the dialog box and sketch the profile you need.

Limits

By default, the application specifies the length of your prism.

There are three ways of defining lengths:

● By entering a value

● By setting the Thru All option: the feature extends the protected volume itself along the

prism extrusion direction outside the boundaries of the Functional Body.

● By setting the To Plane/Surface option: the plane or surface you select trims the prism.

If existing planes or surfaces do not meet your needs, you can use any of these creation


contextual commands available from the empty field:

❍ Create Plane: you can create a plane by using one of the method described in Create Planes.

❍ XY Plane: the XY plane of the current coordinate system origin (0,0,0) becomes the trimming element.

❍ YZ Plane: the YZ plane of the current coordinate system origin (0,0,0) becomes the trimming element.

❍ ZX Plane: the ZX plane of the current coordinate system origin (0,0,0) becomes the trimming element.

❍ Create Join: joins surfaces or curves. See Joining Surfaces or Curves.

❍ Create Extract: generates separate elements from non-connex sub-elements. See Extracting Geometry.

3. Enter the value of your choice the First length field to define the feature length from the sketch

plane. If you prefer, you can drag the LIM1 manipulator in the geometry area.

4. Enter the value of your choice the Second length field to define the feature length in the

opposite direction.

Checking the Mirrored extent option extrudes the profile in the opposite direction using the

same length value as the one defined for the first length.

Clicking the Reverse Direction button reverses the extrusion direction. Another way of

reversing the direction is by clicking the arrow in the geometry area.


Direction

5. Click the Direction tab.

By default, the Normal to profile option is checked, meaning that the profile is extruded normal to the sketch plane. If you wish to specify another direction, just uncheck the option, and then select a geometrical element to be used as the new reference.

Clicking the Reverse Direction button reverses the extrusion direction.

Draft6. Click the Draft tab.

The Draft behavior field provides two options:

❍ None: there is no draft

❍ Intrinsic to feature: you can perform a draft operation by defining:■ the angle value

■ the neutral element


The default neutral element (defines a neutral curve on which the drafted face will lie) is the profile plane. The other possible neutral elements can be:

■ Floor

■ Opening

■ optionally, both opposite directions from the parting element by checking the Draft both sides option.

Set the Intrinsic to feature option and enter the value of your choice if you want to define the draft angle.

Fillet7. Click the Fillet tab.

8. Check the Lateral radius option if you wish to fillet lateral edges. Then, you merely need to set the radius value of your choice.

9. Check the First radius option if you wish to fillet top edges. Then, you merely need to set the radius value of your choice.


10. Check the Second radius option if you wish to fillet bottom edges. Then, you merely need to set the radius value of your choice.

Thick

11. Check the Thick option. This option enables you to add material to both sides of the profile.


12. Enter 10mm in the Thickness1 field and click Preview. Thickness is added to the inside of the profile.

13. Enter 15mm in the Thickness2 field and click Preview. Thickness is added to the outside of the profile.


14. To add material equally to both sides of the profile, check Neutral fiber and click Preview to see the result. The thickness you defined for Thickness1 is evenly distributed: a thickness of 10mm has been added to each side of the profile.


Sweep

A sweep is obtained by sweeping a profile along a center curve.

This task shows you how to define a sweep.

Open the Sweep.CATPart document.

1. Click any icon requiring a shape definition. For example, launch the Shellable capability ,

then click the Sweep icon.

2. Select Sketch.2 as the profile you wish to sweep.



Path

3. Click the Center curve field and select Sketch.1 or click the Sketcher icon to sketch the

center curve you need.

Checking the Between points option defines the sweep between two points along the path

(other than the endpoints). You merely need to select the points of your choice to define Point 1

and Point 2.


4. You can control the sweep position by choosing one of the following options: ❍ Keep angle: keeps the angle value between the sketch plane used for the profile and the

tangent of the center curve.

❍ Pulling direction: sweeps the profile with respect to a specified direction. To define this direction, you can select a plane or an edge.

❍ Reference surface: the angle value between axis h and the reference surface is constant.

For the purposes of our scenario, use the Keep angle option.

Checking the Cut end option cuts the sweep's end profile so that it is normal to the end of the selected center curve.

Draft5. Click the Draft tab.

Control


The Draft behavior field provides two options:

❍ None: there is no draft

❍ Intrinsic to feature: you can perform a draft operation by defining:■ the angle value

■ the neutral element


■ Floor

■ Opening

■ optionally, a second side by checking the Draft both sides option.

Set the Intrinsic to feature option and enter the value of your choice if you want to define the draft angle.

6. Fillet7. Click the Fillet tab.



9. Check the First radius option if you wish to fillet top edges. Then, you merely need to set the radius value of your choice.

10. Check the Second radius option if you wish to fillet the opposite bottom edges. Then, you merely need to set the radius value of your choice.

Thick




13. To add thickness to the outside of the profile, for example enter 3mm in the Thickness2 field. The application previews the new thickness.

14. To add material equally to both sides of the profile, check Neutral fiber and click Preview to see the result. The thickness you defined for Thickness1 is evenly distributed.

12. To add thickness to the inside of the profile, for example, enter 9mm in the Thickness1 field.


Revolve

A revolve is obtained by a rotational sweep of an open or closed profile. The rotation is based on a desired sweep angle around an axis.

This task shows you how to define a revolve.

Open the Revolve.CATPart document.


then click the Revolve icon.

2. Select the profile you wish to extrude. The application previews a revolve feature.



Limits

By default, the application specifies the length of your revolve feature and previews limits. LIM1

corresponds to the first angle value, and LIM2 corresponds to the second angle value.

3. The first angle value is by default 360 degrees. Enter the value of your choice in the First angle

field if you wish to define a different angle value. For example, enter 100 degrees.


4. Enter the value of your choice the Second angle field to define the second angle value.

The Selection field in the Axis frame is reserved for the axes you explicitly select.



Fillet 5. Click the Fillet tab.


7. Check the First radius option if you wish to fillet top edges. Then, you merely need to set the


radius value of your choice.

8. Check the Second radius option if you wish to fillet bottom edges. Then, you merely need to set the radius value of your choice.

Thick



10. Enter, for example, 6mm in the Thickness1 field and click Preview. Thickness is added to the inside of the profile.


11. Enter 3mm in the Thickness2 field. The application previews how the thickness is added to the outside of the profile.

12. To add material equally to both sides of the profile, check Neutral fiber. The application previews the result. The thickness you defined for Thickness1 is evenly distributed.


Thick Surface

This task shows you how to create a thick surface.

Open the ThickSurface.CATPart document.


then click the Thick Surface icon.

2. Select the surface you wish to thicken. The application displays an arrow indicating the direction

in which the surface will be thickened.

3. In the Thickness field, enter a different value if the default value is not satisfactory.


External Shape

While creating shape features, instead of defining one the four different shapes already available since the last application release, you can now reuse an external shape.

Using an external shape means using a body or a surface.

After you clicked the External Shape icon from any shape feature dialog box, the following dialog box is displayed:

You then just need to select the body or surface of interest..


Shell Properties One of the key shape feature types is the "shellable" feature. This is a material volume that you can apply a wall thickness to, thus defining an internal boundary and creating an internal spatial volume.

The Shell Properties command assigns a wall thickness to an active body, making it hollow, thus making the Shellable volumes hollow that are in the body. The command not only specifies the wall thickness, but you can also use it to remove one or more faces from the shelled volume, as shown in the following image:

All removed faces can be restored and the wall thickness can easily be changed at any time by using the Shell

Properties command . In addition, you can specify different wall thicknesses for each face.


If you select several faces, note that clicking the icon displays the Faces to remove dialog box that

allows you to:

● View the list of all of the selected faces

● Remove any face clicking the Remove button

● Replace any face using the Replace button and selecting a new one in the geometry or the specification tree.

After a shellable volume is shelled, only features that have behaviors that function within internal volumes, such as ribs, can penetrate the shell (or internal) boundary. Thus, features such as boss and reinforcement cannot penetrate the shell because their behaviors are to add material volume to the outside of another material volume.


Functional Features

Functional Features are features with specific design intents that are applied to other features to modify them. Characterized by inherent behaviors, they add design details by modifying shape features. Thus, each functional feature performs a function, such as creating walls, adding material to the inside or outside of a shape feature, or creating and protecting an empty space. After a feature is applied, it retains a behavior according to the feature's function and interacts with other features within the same body.

Many of the capabilities have been defined based on assembly and manufacturing processes for injection molded parts and mechanical products.

This section provides information about the following functional features:

Cutout

Pocket

Boss

Rib

Rest

Grill

Reinforcement

Push

Pull

Fitting


Cutout

The Cutout command removes material from the active body, based on a selected profile. By removing material, you are actually creating a protected volume. The cutout is shelled as you apply it to a shellable feature.

This type of feature requires a closed profile defining the area that a section will be removed from the active body.

This task shows you how to create a cutout.

Open the Cutout.CATPart document.

1. Click the Cutout icon .

The Cutout dialog box displays.

2. Select Sketch.1 as the closed profile on which you are going to base the cutout. If no profile is


defined, clicking the Sketcher icon enables you to sketch the profile you need.

The prism is the default shape. Just click the sweep icon if you want to change. For the

purposes of our scenario, keep the default option.

3. Set the parameters and options as follows to define the shape as explained in Prism (or Sweep)

page.

❍ In the Distance tab, enter 17mm to define Floor: Length.

Instead of using the Length option, you can set the Through option, which sets the value of the

cutout length as zero. This extends the cutout infinitely from the profile plane in the specified

direction(s). Because the cutout is a protected volume, the infinite volume is also protected.

When this option is checked, the Length value field is not available.

Preview of the Through option defined for the Floor


Opening: Length=0mm

Here again, instead of using the Length option, you can set the Through option, which sets the

value of the cutout depth as zero.

❍ In the Direction tab

Normal to profile option checked

❍ In the Draft tab

Angle=1deg

❍ In the Fillet tab

All fillet options unchecked.

4. Click Preview to get an idea of what the cutout looks like:


5. Uncheck the With floor option to see the difference. As indicated by the cursor, the cutout has

no floor.

6. Check the With floor option to create a floor.

Complement

Checking the Complement option cuts away what is outside the profile rather than what is inside

the profile, thus creating a complementary (or inverse) cutout, as shown in the following image:


Wall

To define the wall, you can set one of the two options available from the Type drop down list:

❍ Use body thickness: the cutout wall thickness is that of the active shelled body thickness.

❍ Enter thickness: simply enter the value you want. After this option is selected, the value

field becomes available. Wall thickness values can only by positive values.

7. For the purposes of our scenario, set the Enter thickness option and enter 2mm in the

Thickness value field.

8. Click OK to confirm and create the cutout. Cutout.X is added to the specification tree in the

FunctionalBody.X node.

Cutout Complement


Pocket

Pockets are based on simple profiles and usually have side walls and a bottom.

They also have an inner protected volume, which means that no other volumes in the same body can penetrate this area. If you add a pocket to a shelled body, it creates supporting walls, if necessary.

The direction of a pocket always goes from the inside to the outside of the body.

This task shows you how to create a pocket.

Open the Pocket.CATPart document.

1. Click the Pocket icon .

The Pocket dialog box displays.

2. A pocket requires a closed planar profile. Select Sketch.1 as the profile defining the shape of the


pocket. If no profile is defined, clicking the Sketcher icon enables you to sketch the profile you need.

Shape Definition

3. The prism is the default shape. Just click the sweep icon if you want to change. For the


4. Set the parameters and options you want to define the shape as explained in Prism or Sweep

page.

❍ In the Distance tab

Floor: Length=0mm

Opening: Length=50mm

Checking the Clearance volume option in the Distance tab creates an infinite protected volume

outside of the pocket and in the opposite direction in which the pocket depth is applied, which

prevents any material from the same body from penetrating the area above the pocket.


Checking the Protected volume option reserves space inside of the pocket. A protected volume

is a space that nothing from the same body can penetrate inside of.

Checking the Only outside option creates the pocket only outside of the shelled body. Thus, the

profile of the pocket must extend outside of the walls in order for the pocket to be visible. This

option is not available when Protected Volume is selected.

Wall

5. To define the wall, you can set one of the two options available from the Type drop down list:

❍ Use body thickness: the pocket wall thickness is that of the active shelled body thickness.



For the purposes of our scenario, set the Enter thickness option and enter 7mm in the


6. Click OK to confirm and create the pocket. Pocket.X is added to the specification tree in the



Boss

A boss adds material only to the outside of a material volume that it intersects with in the same body. To create a boss, there must be a closed profile, consisting of either wireframe or sketching curves, that defines the area to which the boss is applied. A boss can be either solid or shelled.

This task shows you how to create a boss on the outside face of a shellable feature.


1. Click the Boss icon .

The Boss dialog box displays.

2. Select Sketch.21 as the closed profile. If no profile is defined, clicking the Sketcher icon



Distance

3. Ceiling: enter 25mm in the Length field to define the distance from the sketch plane up to the

ceiling.

4. Opening: enter 100mm in the Length field to define the distance from the sketch plane up to

the opening.

Setting the To shell option extends the boss to a shellable volume in the active body, in the

opposite direction of the height. The extension of the boss profile must fit inside the boundaries

of the shellable volume. Otherwise, no extension will occur.





Direction

By default, the Normal to profile option is checked, meaning that the profile is extruded normal to the sketch plane. If you wish to specify another direction, just uncheck the option, and then select a geometrical element to be used as the new reference. For the purposes of our scenario, keep the default option.


Draft5. If you wish to define a draft angle, click the Draft tab. 6. Check the Angle field and enter 8deg as the draft angle.


❍ Ceiling

❍ Opening

For the purposes of our scenario, keep the default neutral element.



Fillet

Checking the Lateral radius option enables you to fillet lateral edges. Then, you merely need to

set the radius value of your choice.

7. Check the Ceiling radius option to fillet the cylinder's top.8. Enter 3.5mm to define the ceiling radius value.

If the boss is to be shelled, you can check the Constant wall thickness option which

propagates the fillets into the shell, thus maintaining a constant wall thickness.

Wall


❍ Use body thickness: the boss wall thickness is that of the active shelled body thickness.






10. Click OK to confirm and create the boss. Boss.X is added to the specification tree in the


Outside Inside


Rib

The Rib capability adds strength to a shelled body and is typically applied inside of a shelled body, although it may extend outside the body as well.

This task shows you how to create a rib.

Open the Rib.CATPart document.

1. Click the Rib icon .

The Rib dialog box displays.



Shape Definition

The prism is the default shape. Just click the Sweep icon if you want to change. For the



3. Set the parameters and options as follows to define the shape as explained in Prism (or Sweep)

page.

❍ In the Distance tab

First Limit: Length=0mm

Instead of using the Length option, you can set the To shell option. This capability extends the

rib to a shellable volume in the active body, in the opposite direction of the height. The extension

of the rib profile must fit inside the boundaries of the shellable volume. Otherwise, no extension

will occur.

Second Limit: Length=50mm

Instead of using the Length option, you can set the To shell option. This capability extends the

rib to a shellable volume in the active body, in the opposite direction of the height. The extension

of the rib profile must fit inside the boundaries of the shellable volume. Otherwise, no extension

will occur.


Extension Type

4. To define the extension type you want, you can set one of the three options available from the

Extension type drop down list:

❍ No extension: confines the rib to be created only within the walls of the shelled volume,

even if the profile is outside of the walls of the volume.


❍ Add all: creates the rib based on the specified length and width values, even if the values

cause the rib to protrude outside of the volume to which it is applied.

❍ Subtract all: subtracts the volume of the rib from the volume to which it is applied.

5. For the purposes of our scenario, use the Add all option.

Wall


❍ Use body thickness: the rib wall thickness is that of the active shelled body thickness.






7. Click OK to confirm and create the rib. Rib.X is added to the specification tree in the



Rest

The Rest command removes material from the active body to create a platform-like area.

The area of the rest is an inner protected volume, which means that no other volumes within the same body can penetrate this area. You can add a rest to a shelled or unshelled body. The results will vary, depending on the volume type that you select. If you add a rest to a shelled body, it creates supporting walls, if necessary.

This task shows you how to create a rest.

Open the Rest.CATPart document.

1. Click the Rest icon .

The Rest dialog box displays.



A rest requires a closed profile on the body indicating where the rest is to be created.


Distance

3. Enter 8mm in the First length field to define the distance from the sketch plane up to the

bottom.

4. To define the landing, enter 10mm in the Second length field to define the distance from the

sketch plane up to the landing.





Direction

By default, the Normal to profile option is checked, meaning that the profile is extruded normal to the sketch plane. If you wish to specify another direction, just uncheck the option, and then select a geometrical element to be used as the new reference. For the purposes of our scenario, keep the default option.


Draft

If you wish to define a draft angle, just click the Draft tab, then check the Angle field and enter the desired value in the Angle field.



❍ Bottom

❍ Landing

Fillet

Checking the Lateral radius option enables you to fillet lateral edges. Then, you merely need to

set the radius value of your choice.

Checking the Bottom radius option enables you to fillet bottom edges.5. Check the Landing radius option to fillet landing edges and enter 6 as the radius value.

If the rest is to be shelled, you can check the Constant wall thickness option which propagates

the fillets into the shell, thus maintaining a constant wall thickness.

Wall


❍ Use body thickness: the rest wall thickness is that of the active shelled body thickness.



6. Click OK to confirm and create the rest. Rest.X is added to the specification tree in the



Grill

A grill is used to extract a mesh pattern from a shelled body. To create a grill, you need a profile that defines the external boundary as well as the internal components, such as the internal island, the ribs and the spikes.

This task shows you how to create a grill.

Open the Grill.CATPart document.

1. Click the Grill icon .

The Grill dialog box displays.

2. Keep the default method for creating the grid: the Normal to face option creates the grill based on a

specific offset value that is applied normal to the face.

The other method Sweep face creates the grill based on a specific height value that is swept from the face.

Boundary

3. Select Sketch.4 as the boundary profile.

4. In the Height field, enter 22mm to define the depth of the grill inside of the shellable feature. The offset is

applied normal to the face.

5. In the Width field, enter 10mm to define the width of the boundary.

6. Click the Reverse Direction button to reverse the arrow. The arrow indicates which direction the grill


profile will be applied to the shellable feature.

Another way of reversing the direction is by clicking the arrow.

Ribs

7. Select Sketch.3 as the ribs profile.

If no profile is defined, clicking the Sketcher icon enables you to sketch the profile you need.

8. In the Height field, enter 22mm 9. In the Width field, enter 7mm to define the width of boundary and ribs.

10. In the Offset field, enter 22mm to define the depth of the grill inside of the shellable feature. The offset is applied normal to the face.

Spike11. Click the Spike tab.12. Select Sketch.5 as the profile defining the spikes.


13. To define an offset from the top face of the ribs, enter 7 in the Top Offset field. The application dynamically previews this offset. You can see that the offset is computed from the sketch plane used for Sketch.5.

14. To define an offset from the bottom face of the ribs, enter 7 in the Bottom Offset field. The application

dynamically previews this offset. You can see that the offset is computed from the sketch plane used for

Sketch.5.

15. Enter 14 in the Width field to define the width of the spikes.


Island16. Click the Island tab.17. Select Sketch.2 as the island profile.

18. To define the grill wall thickness, you can set one of the two options available from the Type drop down list:

❍ Use body thickness: the grill wall thickness is that of the active shelled body thickness.

❍ Enter thickness: simply enter the value you want. After this option is selected, the value field becomes

available. Wall thickness values can only by positive values.

❍ No walls: the grill has no walls.

19. For the purposes of our scenario, set the Enter thickness option and enter 3mm in the Thickness value

field.


Draft

20. If you wish to define a draft angle, just click the Draft tab, then set the Draft behavior option to Intrinsic

to feature.

21. Just enter the desired value in the Angle field now displayed.

Click OK to confirm and create the grill. Grill.X is added to the specification tree in the FunctionalBody.X

node.

Outside Inside


Reinforcement

The Reinforcement capability adds external strength by adding material to the outside of material volumes that the reinforcement intersects with in the same body.

This task shows you how to add reinforcements.

Open the Reinforcement.CATPart document.

1. Click the Reinforcement icon .

The Reinforcement dialog box displays.

2. Select Sketch.2 as the planar profile to be used.

The profile can be open or closed.


If no profile is defined, clicking the Sketcher icon enables you to sketch the profile you

need.

Distance

3. Enter 8mm in the Length field to define the distance from the sketch plane up to the ceiling.

To define the opening, enter the value of your choice in the Length field to define the distance

from the sketch plane up to the opening.

Instead of using the Length option, you can set To shell. This capability extends the reinforcement to a shellable volume in the active body, in the opposite direction of the height. The extension of the reinforcement profile must fit inside the boundaries of the shellable volume. Otherwise, no extension will occur.

4. In the Width field, enter 4mm to define the width of the reinforcement. The width is distributed equally to both sides of the profile.






Direction

By default, the Normal to profile option is checked, meaning that the profile is extruded normal to the sketch plane. If you wish to specify another direction, just uncheck the option, and then select a geometrical element to be used as the new reference.


Draft

If you wish to define a draft angle, just click the Draft tab, then check the Angle field and enter the desired value in the Angle field.

❍ Ceiling

❍ Opening

Fillet

Checking the Lateral radius option enables you to fillet lateral edges. Then, you merely need


to set the radius value of your choice.

1. Check the Ceiling radius option to fillet the cylinder's top and enter 0.8mm to define the ceiling radius value.

If the rest is to be shelled, you can check the Constant wall thickness option which propagates

the fillets into the shell, thus maintaining a constant wall thickness.

Wall


❍ Use body thickness: the reinforcement wall thickness is that of the active shelled body thickness.





3. Click OK to confirm and create the reinforcement. Reinforcement.X is added to the specification

tree in the FunctionalBody.X node.


Push

Open the Functional_Features1.CATPart document.

1. Click the Push icon .

The Push dialog box displays.

2. Select Body.2 as the pushing body.

Clearance

3. The clearance is the protected volume around Body.2 that separates it from Functional Body.1.

To define it, enter a value in the Distance field.

4. Click Preview to see the result:

The Push capability enables you to use bodies as tools to deform the shell by pushing into it. If needed, the capability also lets you add clearances to some faces. You can use this capability to take into account in the designed part the space that will be occupied by another part in the same mechanism.

This task shows you how to push a body in form of a star into another body to obtain the shape of the star.


Advanced5. If you wish to define other clearances between specific faces and Functional Body.1, click the

Advanced tab. 6. Select the face of interest, then enter a large distance value.7. Click Preview to see the result:

8. If you wish to apply the same clearance to other faces, just select the faces, and check Apply distance to all selected faces.



In case you wish to remove:

❍ a face from the selection, just select the face from the geometry.

❍ all selected faces, use the Clear Selections contextual command available from the Faces field.

Wall

The walls produced by the Push feature are defined by one of the two options available from the Type drop down list:

● Use body thickness: the push wall thickness is that of the active shelled body thickness.

● Enter thickness: simply enter the value you want. After this option is selected, the value


10. For the purposes of our scenario, set the Enter thickness option and enter 6mm for instance in

the Thickness value field.


11. Click OK to confirm and create the push. Push.X is added to the specification tree in the



Pull


1. Click the Pull icon .

The Pull dialog box displays.

2. Select Body.2 as the pulling body.

Clearance

3. The clearance is the protected volume around Body.2 that separates it from Functional Body.1.

To define it, enter a value in the Distance field. For instance, enter 1.


The Pull capability enables you to use bodies as tools to deform the shell by pulling into it. If needed, the capability also lets you add clearances to some faces. You can use this capability to take into account in the designed part the space that will be occupied by another part in the same mechanism.The space created by the Pull is a protected volume.

This task shows you how to use this command.


Advanced5. If you wish to define other clearances between specific faces and Functional Body.1, click the

Advanced tab. 6. Select the face of interest, then enter, for instance, 6 as the distance value.7. Click Preview to see the result:

8. If you wish to apply the same clearance to other faces, just select the faces, and check Apply distance to all selected faces.




❍ a face from the selection, just select the face from the geometry.

❍ all selected faces, use the Clear Selections contextual command available from the Faces field.

Wall

The walls produced by the Pull feature are defined by one of the two options available from the Type drop down list:

● Use body thickness: the pull wall thickness is that of the active shelled body thickness.

● Enter thickness: simply enter the value you want. After this option is selected, the value field

becomes available. Wall thickness values can only by positive values.

10. For the purposes of our scenario, set the Enter thickness option and enter 3mm for instance in the



11. Click OK to confirm and create the push. Pull.X is added to the specification tree in the


Outside Inside


Fitting


1. Click the Fitting icon .

The Fitting dialog box displays.

2. Select Body.2 as the body that will perform the operation into Functional Body.1.

Clearance

3. The clearance defines a space around the Tool Body, based on a specified value, that extends the

protected volume of the fitting by that value. To define it, enter a value in the Distance field. For

instance, enter 4.2.


The Fitting capability enables you to use a new or existing part to fit into another part in a different body. It lets you define a protected area by using a body and adds a clearance. You can use this capability to take into account in the designed part the space that will be occupied by another part in the

This task shows you how to use this capability.


Advanced

5. If you wish to define specific clearances between one or more faces and Functional Body.1, click the Advanced tab.

6. Select the face of interest, then, for instance, enter 6 as the distance value.



● a face from the selection, just select the face from the geometry.

● all selected faces, use the Clear Selections contextual command available from the Faces field.

8. Click OK to confirm and create the fitting. Fitting.X is added to the specification tree in the FunctionalBody.X node.

The volume that is removed during the fitting operation is made a protected volume. No other entity in the same body can penetrate into the protected volume. However, entities from other bodies can penetrate it.

A fitting does not create walls in the shelled volume of the target body. If you want the fitting feature to inherit the shell thickness of the target body, thus creating walls of the same thickness, use the Push command.

If you wish to apply the same clearance to other faces, just select the faces, and check Apply distance to all selected faces.



Feature ModifiersThis new type of features modifies selected features by cutting or subtracting material from them or even by creating an intersection with them.

The following are the different feature modifiers:

Cut

Remove

Intersect


Cut

Open the Cut.CATPart document.

First Cut

1. Click the Cut icon .

The Cut dialog box displays.

2. Select Shellable Prism.1 as the feature you want to cut.

If you select several features, the field displays the number of selected elements. To act on this

selection, just click the icon to display the Element list dialog box that allows you to:

❍ view the selected elements

❍ remove any element clicking the Remove button

❍ replace any element using the Replace button and selecting a new one in the geometry or

The Cut capability trims the shapes of one or more features of the active body by using styling surfaces or planes. The resulting body is shaped by these cutting elements.

This scenario shows you two different cuts and their impacts on the part.

● First cut: performed on a shellable prism

● Second cut: performed on a pocket


the specification tree.

3. Select Extrude.1, Extrude.2 and Plane.1 as the cutting elements.

Here again, if you select several elements, the field displays the number

of selected elements. To act on this list, just click the icon to display

the Element list dialog box.

4. Click both arrows on the surfaces to reverse the direction indicating which portion of material is

to be kept. The arrows must point toward Shellable Prism.1 as shown here:

5. The Fillet option sets the radius of fillets on the edges produced by the cutting surface. For this first cut, check the Fillet Radius option and enter 5mmm in the dedicated field.

6. Click OK to confirm.

The first cut feature is created and the part now looks like this:


Just hide both cutting surfaces if you wish to see the filleted edges.

Second Cut

7. To create the second cut, click the Cut icon again.

8. Select Pocket.1 as the feature you want to cut.

Note that the Wall options are now available from the dialog box.

9. From the specification tree, select Extrude.3 as the cutting element.

10. Now that Extrude.3 is displayed in the Cutting element field, use the Hide/Show contextual

command to show the surface in the geometry area:


11. The Wall option lets you set if, or how, the Cut command creates walls along the cutting surface.

To define a wall for this second cut, you can set one of the two options available from the Type

drop down list:

❍ Use body thickness: the cutout wall thickness is that of the active shelled body thickness.



For the purposes of our scenario, set the Enter thickness option and enter 5mm in the


12. Click OK to confirm the operation and hide all of the four cutting elements used in this scenario to enhance the result.

The second cut operation has split the pocket while adding some thickness (shown by the arrow on the picture) from the edge produced by the cutting surface . The resulting part looks like this:

Cut.X is added to the specification tree in the FunctionalBody.X node.


Remove

The Remove command lets you modify one or more features by removing a shape from it. The shape can be a prism, a sweep, a revolve, a thick surface or the shape of an external body or surface.

This task shows you how to remove a sweep from a shellable prism.

Open the Remove.CATPart document.

1. Click the Remove icon .

The Remove Feature dialog box displays.

2. Select Shellable Prism.1 as the feature to modify.





❍ replace any element using the Replace button and selecting a new one in the geometry or the


specification tree.

Shape Definition

3. Remove features can have different shapes. The prism is the default shape. If you prefer a different

shape, click any of the other three shapes available. To know how to create any of them, refer to the

Prism, Sweep, Revolve, Thick Surface or External Shape tasks. For the purposes of our scenario, set

the Sweep option .

4. Select Sketch.2 as the profile defining the sweep.

5. Select Sketch.3 as the center curve.

Fillet

6. Click the Fillet tab.7. Check the Lateral radius option and enter 1mm as the lateral radius value.

8. Click OK to confirm the operation.

The defined sweep has been removed from the shellable prism.

Remove Sweep.X is added to the specification tree in the FunctionalBody.X node.


Remove Sweep.X is added to the specification tree in the FunctionalBody.X node.

Remove Command and Protected Volumes

After you have generated a Remove feature from protected volumes, for example from a Cutout, material is generated as illustrated below:

Cutout pointed by the cursor and sketch to be used for the remove operation

Remove operation accomplished on the cutout


Intersect

Open the Intersect.CATPart document.

1. Click the Intersect icon .

The Intersect Feature dialog box displays.

2. Select Remove Sweep.2 as the feature to modify.




The Intersect command lets you compute the intersection of the shape you define with the features you wish to modify. In other words, the resulting shape is the intersection between the shape of the Intersect and the shapes of the selected features.

This task shows you how to create an intersect feature from a prism.



❍ replace any element using the Replace button and selecting a new one in the geometry or the specification tree.

Shape Definition

3. Intersect features can have different shapes. The prism is the default shape. If you prefer a

different shape, click any of the other three shapes available. To know how to create any of

them, refer to the Prism, Sweep, Revolve, Thick Surface or External Shape tasks. For the


4. Select Sketch.4 as the profile defining the prism.

Direction

5. Check Normal to profile to extrude the profile normal to Sketch.4.

6. Click OK to confirm the operation.

The intersection between the defined prism you defined and Remove Sweep.2 looks like this:


Intersect Prism.X is added to the specification tree in the FunctionalBody.X node.


PowercopyA PowerCopy is a set of features that are grouped in order to be used in a different context, and presenting the ability to be re-specified according to the context when pasted.This PowerCopy captures the design intent and know-how of the designer thus enabling greater reusability and efficiency.

This chapter includes the following tasks:

Creating Powercopies

Instantiating Powercopies

Saving Powercopies into a Catalog


Creating PowerCopies

This task shows you how to create PowerCopy elements from functional features.A PowerCopy is a set of features (geometric elements, formulas, constraints and so forth) that are grouped in order to be used in a different context, and presenting the ability to be completely redefined when pasted.This PowerCopy captures the design intent and know-how of the designer thus enabling greater reusability and efficiency.

Open the PowerCopyInitial.CATPart document.

1. Prior to defining the power copy element, use the Tools -> Options -> Infrastructure

command to check if parameters and formulas are defined for the part: check the Parameters

and Relations options if they are not checked. For more information, refer to Customizing the

Tree and Geometry Views.

Taking a look at the specification tree, the PowerCopyInitial.CATPart document contains three

parameters and eight formulas.

2. To create the power copy, select Insert ->Knowledge Templates -> Power Copy... .The Powercopy Definition dialog box is displayed.


3. Define the PowerCopy as you wish to create it:

The Definition tab lets you assign a name to the powercopy and presents its components in the 3D viewer. If desired, you can enter the name of your choice in the Name field.

Select the elements making up the PowerCopy from the specification tree. For the purposes of our scenario, select the following elements:

● Cutout.1

● Cavity Prism.2

● Internal Prism.3

● Protected Prism.4

● All parameters (3)

● All formulas (8)

The dialog box is automatically filled with information about the selected elements.


The Inputs tab lets you define the reference elements making up the PowerCopy. You can rename these elements for a clearer definition by selecting them in the viewer and entering a new name in the Name field. In parentheses you still can read the elements' default name based on its type.

4. Click the Parameters tab to define which of the parameter values used in the PowerCopy you will be able to modify at instantiation time.

5. Double-click the three parameters to make them public. The Published Name option is then

checked for each of them, indicating that the parameters can be modified at instanciation time.


The Icon tab lets you modify the icon identifying the PowerCopy in the specifications tree. A

subset of icons is available from the Icon choice button. If you click ... the Icon Browser opens,

showing all icons loaded on your application session.

The Grab screen button lets you capture an image of the PowerCopy to be stored with its

definition. Click the Grab screen button. You can zoom in or out the image to adjust it.

6. Click OK to create the PowerCopy.

The PowerCopy.1 node is displayed in the specification tree, just below the Relations node.

7. Save your document as PowerCopy.CATPart.


Instantiating PowerCopies

This task shows how to instantiate Power Copies once they have been created as described in Creating PowerCopies.There are two ways of doing this:

● Using the PowerCopy Instantiate From Document command

● Using a catalog (see Part Design User's Guide for more information)

Open the TargetForInstanciation.CATPart document.

Using the PowerCopy Instantiate From Document command

1. Select the Insert -> Instantiate From Document... command.

The Select PowerCopy dialog box is displayed allowing you to navigate to the document or

catalog where the powercopy is stored. Navigate to online/fm1ug/samples directory.

2. Select the document containing the Powercopy, i.e. PowerCopy.CATPart.

The Insert Object dialog box is displayed.

Use the Reference list to choose the correct PowerCopy when several have been defined in the document.


3. Complete the Inputs within the dialog box by selecting the adequate element in the geometric

area: Click Point.1 in the dialog box, and select Point.6 as the element replacing Point.1.

4. Click on the Use identical name button to automatically select all the elements with the same name. This command searches for features, publications, sub-elements or parameters having the name of the input. Here, the command searches for xy plane.

Point.6 and xy plane are selected.


5. Click on the Parameters button to display the Parameters dialog box.

6. Enter 10mm as the new hole diameter value, 5mm as the new fixture height value and 7

degrees as the new draft angle value.

7. Click Close to confirm the operation and close the dialog box.

8. Check the Repeat option to be able to repeat the instantiation.

9. Click Point.1, then select Point.6 .

10. Click OK to validate.

The Insert Object dialog box remains open.

11. Repeat the operation to instanciate Point.1 on each remaining point.

12. When done, click OK to create the PowerCopy instance.

The PowerCopy is instantiated in context, meaning its limits are automatically re-defined taking into account the elements on which it is instantiated.

13. To exit the command, uncheck the Repeat button, then click OK, or click Cancel.


The features (Cutouts, Cavity Prisms, Internal Prisms, Protected Prisms, Parameters, Formulas)

are created and their names are displayed in the specification tree. Once instantiated, the

powercopy is no more linked to the original PowerCopy used to define them.

14. If you wish to perform the next task, save your document as PowerCopy for example. For more

information about this capability, refer to Power Copy.


Saving Power Copies into a Catalog

This task shows you how to store Power Copy elements into a catalog, for later use as described in Instantiating PowerCopies.

Open the document containing the power copy you performed in the previous task "Instantiating PowerCopies".

1. Select the PowerCopy from the specification tree for example.2. Choose Insert -> Knowledge Templates -> Save In Catalog....

The Catalog Save dialog box is displayed:

When creating a catalog for the first time, click the ... button to display the File Selction dialog box, and navigate to the location where you wish to create a catalog.

Then simply key in the catalog name and click Open.

If you wish to add a PowerCopy to an existing catalog, simply activate the Update an existing catalog option in the Catalog Save dialog box.

By default, the Catalog Save dialog box recalls the catalog accessed last.3. Click OK.

The PowerCopy has been stored in the catalog.


Workbench DescriptionThe Functional Molded Part window looks like this:

Click the sensitive areas to see the related documentation.

Refer to the Part Design Workbench Description and to the Infrastructure Workbench Description to access information about the other toolbars.

Functional Molded Part Menu BarShape Features Toolbar

Functional Features ToolbarMold Design Properties Toolbar

Feature Modifiers Toolbar


Functional Molded Part Menu BarThis section presents the main menu bar tools and commands dedicated to Functional Molded Part.

Start File Edit View Insert Tools Windows Help

EditFor... See...

Undo Infrastructure User's Guide

Repeat Infrastructure User's Guide

Update Updating Parts

(Part Design User's Guide)

Cut

Copy

Paste

Cutting, Copying, Pasting


Paste Special... Handling Parts in a Multi-Document Environment


Delete Deleting Features


Search... Infrastructure User's Guide

Selection Sets... Infrastructure User's GuideSelection Sets Edition... Infrastructure User's Guide

Find Owning Selection Set... Infrastructure User's Guide

InsertFor... See...

Body Inserting a New Body



Annotations Creating Annotations


Sketcher Sketcher User's Guide

Constraints Setting Constraints


Shape Features Shape Features

Functional Features Functional Features

Feature Modifiers Feature Modifiers

Mold Design Properties Shell Properties

Dress-Up Features Dress-Up Features


Knowledge Templates Creating PowerCopies

Instantiate From Document... Instantiating PowerCopies

ToolsFor... See...

Formula... Infrastructure User's Guide

Image Infrastructure User's Guide

Utility... Infrastructure User's Guide

Show Infrastructure User's Guide

In Work Object Scanning the Part and Define Local Objects



Parameterization Analysis... Infrastructure User's Guide

Customize... Infrastructure User's Guide

Visualization Filters... Infrastructure User's Guide

Options... Customizing

(Part Design User's Guide) Standards... Infrastructure User's Guide

Conferencing Infrastructure User's Guide


Shape Features Toolbar

See Shellable Feature

See Cavity Feature

See Core Feature

See Internal Feature

See Added Feature

See Protected Feature


Functional Features Toolbar

See Cutout

See Pocket

See Boss

See Rib

See Rest

See Grill

See Reinforcement

See Push

See Pull

See Fitting


Mold Design Properties Toolbar

See Editing the Shell Properties and Shell Properties


Feature Modifiers Toolbar

See Cut

See Remove

See Intersect


Glossary

Aabsolute coordinates

Coordinates that specify a location in relation to the current coordinate system origin (0,0,0).

active body The body to which functional volumes and features are "assigned" as they are created.

annotation An entity that provides information for the drawing. Texts are annotation entities.

Bbody A group of volumes and features combined to represent a solid part or product. Any

number of bodies can be in a single model or file, but only one can be active at a time. Volumes and features are automatically added to the active body.

Cconstraint A geometric or dimension relation between two elements. These relations are restrictions

for these elements.

D

deactivate To suppress the behavior of an entity, visually and geometrically.

E

extrude An operation that gives 2D objects depth (3D).

Ffunctional modeling

Refers to designing a 3D digital model by using tools with inherent behaviors, such as features and volumes, that interact in specific ways.

Ppart A 3D entity obtained by combining different features.

pocket A feature corresponding to an opening through a feature. The shape of the opening corresponds to the extrusion of a profile.

profile An open or closed shape including arcs and lines created by the profile command in the Sketcher workbench.


protected volumeA 3D area of protected space within a body that other entities within the same body cannot penetrate.

S

shell A hollowed out feature

sketch A set of geometric elements created in the Sketcher workbench. For instance, a sketch may include a profile, construction lines and points.

Vvolume The solid material in a CATPart document. It can also be the empty space inside of a

shelled solid volume.


Index

Aadded features

adding material

Bbody

boss features

Ccatalog

cavity features command

Added Feature

Boss Feature

Cavity Feature

Core Feature

Cut Feature

Cutout Feature

Fitting Feature

Grill Feature

Internal Feature

Intersect Feature

Pocket Feature

PowerCopy Creation

PowerCopy Instantiate From Document


PowerCopy Save in Catalog

Protected Feature

Pull Feature

Push Feature

Reinforcement Feature

Remove Feature

Rest Feature

Rib Feature

Shell Properties

Shellable Feature

core features creating

added features

boss features

cavity features

core features

cut features

cutout features

fitting features

grill features

internal features

intersect features

pocket features

protected features

pull features

push features

reinforcement features

remove features

rest features

rib features

shellable features

cut features


cutout features

Ddesign intent

Eentering

Functional Molded Part workbench

external shapes

Ffeature modifiers

fitting features

functional bodies

Functional Features

functional features

Functional Molded Part workbench

functional solids

Ggrill features

Hhollow


Iinternal features

intersect features

MMold Design Properties

Ppocket features

PowerCopy Creation

PowerCopy Instantiate From Document

PowerCopy Save in Catalog

prism

protected features

pull features

push features

Rreinforcement features

remove features

removing material

rest features

revolve

rib features


Ssetting

shell properties

Shape Features

shape features

shapes

shell properties

shellable features

surface

sweep

TThick Surface toolbars

Functional Features

Mold Design Properties

Shape Features

Volumes

VVolumes


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