2-Catia Sketcher Ex

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Copyright DASSAULT SYSTEMES 2002 1

Sketcher

CATIA TrainingExercises

Version 5 Release 10

December 2002

EDU-CAT-E-SKE-FX-V5R10


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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.84. 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.189. Master Exercise: Gasket (Step 1) p.21

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






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Exercise

Sketching 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.


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Do It Yourself (1/2)

Sketching Simple Profiles

1- Lines

2- Spline

3- Arc

4- Axis

Pt5


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1- Lines

2- Spline

3- Arc

4- Axis

Load: CATSKE_Ex_Recap_Sketching_Simple_Profile.CATPart





Exercise

Sketching 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 KeyholeExtra 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



Exercise

Editing Profiles : Recap Exercise

Create a Rectangle

Modify the rectangular profile

Surfaces

10 min.



Do It Yourself

Create these profiles by freehand

1- Create the Rectangle

2- Modify the length and width of the rectangle by dragging lines3- Modify the entire shape of the rectangle by dragging its endpoints

Pt1

Load: CATSKE_Ex_Recap_Editing_Profile.CATPart



Exercise

Operations 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



Exercise

Setting 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



Exercise

Setting Constraints : Recap Exercise II

Study a mechanism using the

Sketchers Animate

Constraint tool

WireframeSurfaces

15 min.


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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


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Exercise

Managing Sketches : Recap Exercise

Create an Angled Plane

Change the Sketch Support of the part to this new plane

Surfaces

10 min.


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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


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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


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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.

D i P G k t


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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

M t E i


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Master Exercise

Gasket (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.

D It Y lf (1/2)


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Sketch the profile shown on the right.

The outer profile should be sketchedwith 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



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Hints:

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

Switch Sketching mode in the Tools toolbar

Master Exercise


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Master Exercise

Gasket (Step 2) - Sketching Pre-Defined Profiles

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

5 min.

Do It Yourself


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Do It Yourself

Sketch the slot in the location

shown on the right using a Pre-

Defined Profile tool. Set the

sketching mode to automaticallycreate Horizontality, Verticality,

and Tangency constraints

Save your model for the next step


Master Exercise


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Master Exercise

Gasket (Step 3) - Editing Profiles


Edit the slot on the Gasket

5 min.

Do It Yourself


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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 Exercise


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Master Exercise

Gasket (Step 4) - Performing a Symmetry

In this step you will:Create the symmetrical elements of the Gasket

10 min.

Do It Yourself


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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.

Save your model for the next

step


Master Exercise


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Master Exercise

Gasket (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.



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( )

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)





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( )

Turn the page if you want Hints :



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( )

Hints:

You dont 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)



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Result

Master Exercise


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Gasket (Step 6) - Replacing the Sketch


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

5 min.



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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.




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END of GASKET exercise !

Documents

2-Catia Sketcher Ex