Week 8 - Challenge 4 - Coin Holder Design
Title- Week 8 - Challenge 4 - Coin Holder Design
Objectives-
1. To understand how to generate class B & class C surfaces from input class A surface
2. To understands importance of Tooling Axis
3. To understands importance of Draft & Draft analysis
4. Create solid body using closed surfaces.
Creation of Tooling Axis-
In this part CCS (Class C surface) will be at 90deg to the part ejection direction/ tooling direction.

For this part tooling axis will be normal to the bottom face. Process to create tooling axis is explained below-

Creation of close surface using Class A, B & C surfaces-
a. Creating Class A surface (CAS)-


b. Creating Class B surface-
Class B surface will be holding all engineering features like ribs, screw bosses, etc.
We need to create CBS (Class B surface) using CAS (Class A surface). The process of generating CBS is explained below-







c. Creating Class C surface



d. Creating close surface

e. Creating solid surface from closed surface
Creating solid body requires completely closed surfaces or otherwise it will show error.
Using close surface command in part workbench we have created solid body

Draft Analysis-
Process of performing draft analysis in Catia V5-
1. Click on the draft analysis icon (
) or go to Insert>Analysis>Feature Draft Analysis

Note- While doing Draft analysis make sure you are enabling material view mode.
2. Switch on quick analysis mode by clicking on below highlighted icon

3. Selecting Draft Direction

4. Selecting surface

5. Input the draft angles

6. Running point

Draft analysis for CAS-

Draft analysis for Solid part-

Solid model with the proper color code of the draft angle in various orientations (Isometric, Front, Side, and Top View)-

Screenshots of the solid model with the proper color code of the draft angle in various orientations-

Conclusion-
1. We have understood how to generate class B & class C surfaces from input class A surface
2. We have understood importance of Tooling Axis
3. We have understood importance of Draft & Draft analysis
4. We have created solid body using closed surfaces.