Week 9 - Challenge 3 - Bumper
A Report On Bumper Design
Objective : To design class B surface and class C surface for the given class A surface of the bumper and make a solid part using 'close surface' method.
Draft Analysis:
- The draft analysis determines whether the part is manufacturable or not. The forming processes which uses the core and cavity to manufacture the parts always required some draft. Draft allows the formed part inside mold to get eject from the core and cavity.
- It helps the part to leave the mold surface in the erlier stage of ejection or mold opening. Hence reduce the friction between the part and mold which results long life of core and cavity and production of finished parts.
Draft analysis of Class A Surface and Tooling Direction in CATIA:
1) Process to create tooling axis in CATIA
- For the given class A surface, a tooling axis is been created using a line command with point and direction method.
- For that a point is given on the bottom edge of the grill and this point is used as a support for a line which is drawn along x axis.
2) Process To Do Draft Analysis On Class A Surface And The Part:
- Draft Anlysis Option : insert -- analysis -- feature draft analysis
- In draft analysis window select the compass option and place the compass on the tooling axis by draging it then click on the lock option.
- Now click anywhere on the surface and switch the draft direction using direction option which will alter the draft direction. This will result in change of colour of the part. Green means positive draft and the blue is negative draft.
- Positive draft indicates the part is manufacturable.
- The same method is applicable for draft analysis of the part, just make sure that the view mode of the part is in material mode.
Draft analysis of the class A surface:
Draft analysis of the part:
