CATIA Training Exercises Sketcher Version 5 Release 10

CATIA Training Exercises Sketcher Version 5 Release 10 December 2002 EDU-CAT-E-SKE-FX-V 5 R 10 Copyright DASSAULT SYSTEMES 2002 1

Table of Contents 1. Sketching Simple Profiles : Recap Exercise 2. Sketching Pre-Defined Profiles : Recap Exercise 3. Editing Profiles : Recap Exercise 4. Operations on Profiles : Recap Exercise 5. Setting Constraints : Recap Exercise I 6. Setting Constraints : Recap Exercise II 7. Managing Sketches : Recap Exercise 8. Master Exercise: Gasket Presentation 9. Master Exercise: Gasket (Step 1) 10. Master Exercise: Gasket (Step 2) 11. Master Exercise: Gasket (Step 3) 12. Master Exercise: Gasket (Step 4) 13. Master Exercise: Gasket (Step 5) 14. Master Exercise: Gasket (Step 6) Copyright DASSAULT SYSTEMES 2002 p. 3 p. 6 p. 8 p. 10 p. 12 p. 14 p. 16 p. 18 p. 21 p. 24 p. 26 p. 28 p. 30 p. 35 2

Exercise Sketching Simple Profiles: Recap Exercise 5 min. 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 Copyright DASSAULT SYSTEMES 2002 3

Do It Yourself (1/2) Sketching Simple Profiles Pt 5 1 - Lines 2 - Spline 3 - Arc 4 - Axis Copyright DASSAULT SYSTEMES 2002 4

Do It Yourself (2/2) Sketching Simple Profiles 1 - Lines 2 - Spline 3 - Arc 4 - Axis Load: CATSKE_Ex_Recap_Sketching_Simple_Profile. CATPart Copyright DASSAULT SYSTEMES 2002 5

Exercise Sketching Pre-Defined Profiles Recap Exercise 10 min. Create two Pre-Defined profiles - a Hexagon and a Keyhole Extra Credit : Extrude a solid Pad from your profile Copyright DASSAULT SYSTEMES 2002 6

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 Pt 1 Load: CATSKE_Ex_Recap_Sketching_Predefined_Profiles. CATPart Copyright DASSAULT SYSTEMES 2002 7

Exercise Editing Profiles : Recap Exercise 10 min. Create a Rectangle Modify the rectangular profile Surfaces Copyright DASSAULT SYSTEMES 2002 8

Do It Yourself Create these profiles by freehand 1 - 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 Pt 1 Load: CATSKE_Ex_Recap_Editing_Profile. CATPart Copyright DASSAULT SYSTEMES 2002 9

Exercise Operations on Profiles : Recap Exercise 15 min. Design in Context Project 3 D Elements into your Sketch Trim your profile with Corners and Chamfers Surfaces Copyright DASSAULT SYSTEMES 2002 10

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 Pt 1 Copyright DASSAULT SYSTEMES 2002 Load: CATSKE_Ex_Recap_Operations_On_Profiles. CATPart 11

Exercise Setting Constraints : Recap Exercise I 15 min. Create constraints and dimension between the sketch and 3 D geometry Copyright DASSAULT SYSTEMES 2002 12

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. Pt 5 profile with respect to the faces on the Male part Optional: Create the Female Pad from your profile Pt 1 Load: CATSKE_Ex_Recap_Setting_Constraints_1. CATPart Copyright DASSAULT SYSTEMES 2002 13

Exercise Setting Constraints : Recap Exercise II 15 min. Study a mechanism using the Sketcher’s Animate Constraint tool Surfaces Wireframe Copyright DASSAULT SYSTEMES 2002 14

Do It Yourself Make the 62 degree angle vary from 62 to - 62 to study the constraints existing between the different geometrical elements Pt 5 Pt 1 Load: CATSKE_Ex_Recap_Setting_Constraints_2. CATPart Copyright DASSAULT SYSTEMES 2002 15

Exercise Managing Sketches : Recap Exercise 10 min. Create an Angled Plane Change the Sketch Support of the part to this new plane Surfaces Copyright DASSAULT SYSTEMES 2002 16

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 Pt 1 Load: CATSKE_Ex_Recap_Managing_Sketches. CATPart Copyright DASSAULT SYSTEMES 2002 17

Master Exercise Gasket: Presentation 55 min. 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 Copyright DASSAULT SYSTEMES 2002 18

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. Copyright DASSAULT SYSTEMES 2002 19

Design Process: Gasket 1 Sketching Simple Profiles 2 Sketching Pre-Defined Profiles Editing Profiles 3 6 Step 6: Replacing the Sketch Performing a Symmetry 4 5 Fully Constrain the Gasket Copyright DASSAULT SYSTEMES 2002 20

Master Exercise Gasket (Step 1) - Sketching Simple Profiles 10 min. In this step you will: Set up the Sketching Mode Use Simple Profile tools to sketch half of the Gasket Copyright DASSAULT SYSTEMES 2002 21

Do It Yourself (1/2) 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_Step 1. CATPart Copyright DASSAULT SYSTEMES 2002 22

Do It Yourself (2/2) Hints: Go to Tools/Options/Part/Sketcher (in the Menubar) to set Grid Auto detection parameters Switch Sketching mode in the Tools toolbar Copyright DASSAULT SYSTEMES 2002 23

Master Exercise Gasket (Step 2) - Sketching Pre-Defined Profiles 5 min. In this step you will: Add a slot on the Gasket Copyright DASSAULT SYSTEMES 2002 24

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 Load: CATSKE_Ex_Master_Step 2. CATPart Copyright DASSAULT SYSTEMES 2002 25

Master Exercise Gasket (Step 3) - Editing Profiles 5 min. In this step you will: Edit the slot on the Gasket Copyright DASSAULT SYSTEMES 2002 26

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 Save your model for the next step Load: CATSKE_Ex_Master_Step 3. CATPart Copyright DASSAULT SYSTEMES 2002 27

Master Exercise Gasket (Step 4) - Performing a Symmetry In this step you will: Create the symmetrical elements of the Gasket 10 min. Copyright DASSAULT SYSTEMES 2002 28

Do It Yourself Perform a symmetry operation on the outer profile and the two circles (Refer to previous page) in one step. Use Auto. Search 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 Load: CATSKE_Ex_Master_Step 4. CATPart Copyright DASSAULT SYSTEMES 2002 29

Master Exercise Gasket (Step 5) - Fully Constraining the Gasket 20 min. In this step you will: 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. Copyright DASSAULT SYSTEMES 2002 30

Do It Yourself (1/4) 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 5 mm. for the Gasket. (Please check with the Instructor on where the Pad tool is located if you have trouble finding it) Save your model for the next step Load: CATSKE_Ex_Master_Step 5. CATPart Copyright DASSAULT SYSTEMES 2002 31

Do It Yourself (2/4) Turn the page if you want Hints : Copyright DASSAULT SYSTEMES 2002 32

Do It Yourself (3/4) 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) Copyright DASSAULT SYSTEMES 2002 33

Do It Yourself (4/4) Result Copyright DASSAULT SYSTEMES 2002 34

Master Exercise Gasket (Step 6) - Replacing the Sketch 5 min. In this step you will: Modify the Gasket by replacing its Sketch with a new REV B Sketch Copyright DASSAULT SYSTEMES 2002 35

Do It Yourself (1/2) 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. Load: CATSKE_Ex_Master_Step 6. CATPart Copyright DASSAULT SYSTEMES 2002 36

Do It Yourself (2/2) END of GASKET exercise ! Copyright DASSAULT SYSTEMES 2002 37