Copyright DASSAULT SYSTEMES 20021 Sketcher CATIA Training Exercises Version 5 Release 10 December...

Copyright DASSAULT SYSTEMES 2002 1

Sketcher

CATIA Training Exercises

Version 5 Release 10December 2002

EDU-CAT-E-SKE-FX-V5R10


Table of Contents

1. Sketching Simple Profiles : Recap Exercise p.3

2. Sketching Pre-Defined Profiles : Recap Exercise p.6

3. Editing Profiles : Recap Exercise p.8

4. Operations on Profiles : Recap Exercise p.10

5. Setting Constraints : Recap Exercise I p.12

6. Setting Constraints : Recap Exercise II p.14

7. Managing Sketches : Recap Exercise p.16

8. Master Exercise: Gasket Presentation p.18

9. Master Exercise: Gasket (Step 1) p.21

10.Master Exercise: Gasket (Step 2) p.24






ExerciseSketching Simple Profiles: Recap Exercise

Create a simple profile made up of Lines, a Spline, an Arc, and an Axis

Extra Credit : Create a solid of revolution from your profile and shell it

5 min.


Do It Yourself (1/2)

Sketching Simple Profiles

1- Lines

2- Spline

3- Arc

4- Axis

Pt5


1- Lines

2- Spline

3- Arc

4- Axis

Load: CATSKE_Ex_Recap_Sketching_Simple_Profile.CATPart




ExerciseSketching Pre-Defined Profiles Recap Exercise

Create two Pre-Defined profiles - a Hexagon and a Keyhole

Extra Credit : Extrude a solid Pad from your profile

Create two Pre-Defined profiles - a Hexagon and a Keyhole

Extra Credit : Extrude a solid Pad from your profile

10 min.


Do It Yourself

Create these profiles by freehand

Optional: Please check with your Instructor if you have any questions on how to create a pad from your profile

Pt1

Load: CATSKE_Ex_Recap_Sketching_Predefined_Profiles.CATPart


ExerciseEditing Profiles : Recap Exercise

Create a Rectangle

Modify the rectangular profile

Surfaces

10 min.


Do It Yourself

Create these profiles by freehand1- Create the Rectangle

2- Modify the length and width of the rectangle by dragging lines

3- Modify the entire shape of the rectangle by dragging its endpoints

Pt1

Load: CATSKE_Ex_Recap_Editing_Profile.CATPart


ExerciseOperations on Profiles : Recap Exercise

Design in Context

Project 3D Elements into your Sketch

Trim your profile with Corners and Chamfers

Surfaces

15 min.


Do It Yourself

In order to get into your Sketch plane:

Select the Sketcher Icon and the plane

1- Project the Splines from the Supports

2- Draw two horizontal lines passing through the projected Splines then trim them using the Corner and Chamfer tools

3- Optional: Extrude a Pad using your profile

Pt1

Load: CATSKE_Ex_Recap_Operations_On_Profiles.CATPart


ExerciseSetting Constraints : Recap Exercise I

Create constraints and dimension between the sketch and 3D geometry

15 min.


Do It Yourself

Make the circle in your Sketch concentric to the cylinder on the Male part. Put a dimension on the circle.

Dimension the rectangular profile with respect to the faces on the Male part

Optional: Create the Female Pad from your profilePt5

Pt1

Load: CATSKE_Ex_Recap_Setting_Constraints_1.CATPart


ExerciseSetting Constraints : Recap Exercise II

Study a mechanism using the

Sketcher’s Animate

Constraint tool

WireframeSurfaces

15 min.


Do It Yourself

Make the 62 degree angle vary from 62 to - 62 to study the constraints existing between the different geometrical elements

Pt5

Pt1

Load: CATSKE_Ex_Recap_Setting_Constraints_2.CATPart


ExerciseManaging Sketches : Recap Exercise

Create an Angled Plane

Change the Sketch Support of the part to this new plane

Surfaces

10 min.


Do It Yourself

1- Create a plane at 45 Degrees to the XY plane using the line provided

2- Change the Sketch Support for Sketch.1 to this new plane

Pt1

Load: CATSKE_Ex_Recap_Managing_Sketches.CATPart


Gasket: Presentation

In this exercise you will have the chance to try out various tools for Sketching and Constraining by designing a profile for a Gasket.

You will test the integrity of your Sketch by extruding the solid Gasket using the Pad tool from the Part Design Workbench

Finally, you will see how easy it is to modify a sketch

55 min.

Master Exercise


Design Intent: Gasket

A Gasket is a part used to make a joint fluid tight. It can be made of rubber, foam, or other industrial polymers that conform to the contours of adjacent parts thus providing an airtight or liquid tight seal between the parts.


Design Process: Gasket

Step 6: Replacing the Sketch

Sketching Pre-Defined Profiles

Editing Profiles

Performing a Symmetry

Fully Constrain the Gasket


1

2

36

4

5


Master ExerciseGasket (Step 1) - Sketching Simple Profiles

In this step you will:

Set up the Sketching Mode

Use Simple Profile tools to sketch half of the Gasket

10 min.



Sketch the profile shown on the right.

The outer profile should be sketched with one use of the Profile tool. The Sketching mode should be set so that only Horizontality, Verticality, and Tangency Constraints are automatically created.

Place the circles roughly as shown. Turn off the automatic creation of Constraints and Dimensions when sketching the circles.

Load: CATSKE_Ex_Master_Step1.CATPart



Hints: Go to Tools/Options/Part/Sketcher (in the Menubar) to set Grid Auto detection parameters

Switch Sketching mode in the Tools toolbar


Master ExerciseGasket (Step 2) - Sketching Pre-Defined Profiles

In this step you will: Add a slot on the Gasket

5 min.


Do It Yourself

Sketch the slot in the location shown on the right using a Pre-Defined Profile tool. Set the sketching mode to automatically create Horizontality, Verticality, and Tangency constraints

Save your model for the next step



Master ExerciseGasket (Step 3) - Editing Profiles


Edit the slot on the Gasket

5 min.


Do It Yourself

Change the center of the top arc on the slot to H=0 and V=20

Change the center of the bottom arc on the slot to H=0 and V=-20




Master ExerciseGasket (Step 4) - Performing a Symmetry


Create the symmetrical elements of the Gasket

10 min.


Do It Yourself

Perform a symmetry operation on the outer profile and the two circles (Refer to previous page) in one step.

Use AutoSearch to select the outer profile then use the CTRL key to select the two circles

Automatically create Symmetry Constraints (Hint: Turn on Dimensional Constraints Mode)

Use the Search tool under Edit in the Menubar to select all the Symmetry Constraints and No-Show them.




Master ExerciseGasket (Step 5) - Fully Constraining the Gasket


Completely constrain the Gasket by using a combination of Geometric and Dimensional Constraints

You will then create the actual solid Gasket using the Pad tool from the Part Design Workbench. Successfully creating a Pad will also help verify that your Sketch was correctly defined.

20 min.



Create the Geometric and Dimensional Constraints shown on the next page.

Create a Relation between the two 10 mm radius dimensions.

Access the Pad tool in the Part Design Workbench and create a thickness of 5mm. for the Gasket. (Please check with the Instructor on where the Pad tool is located if you have trouble finding it)





Turn the page if you want Hints :



Hints:

You don’t have to constrain the left side of the Gasket because the geometry there is already constrained by the Symmetry Constraints (in No-Show).

Put a Coincidence Constraint between the points that lie on top of one another where the right and left profiles meet.

This is a Coincidence Constraint between the center of this corner and the lower horizontal line.

These type of dimensions are all off the HV Axes (not the Symmetry Construction line of the Elongated Hole)



Result


Master ExerciseGasket (Step 6) - Replacing the Sketch


Modify the Gasket by replacing its Sketch with a new REV B Sketch

5 min.



Replace your original Sketch for the Gasket with the other sketch.

Refer to next page for required result.

Save your model for your own reference.




END of GASKET exercise !

Copyright DASSAULT SYSTEMES 20021 Sketcher CATIA Training Exercises Version 5 Release 10 December...

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