Week 10 - Challenge 1- Attachment Feature Creation (Ribs & Screw Boss)
A Report On Attachment Feature Creation (Ribs & Screw Boss)
Objective:1) Create the rib for the Drill Handle considering the design rules.
2) Create the Screw boss for the Drill Handle considering the design rules.
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 (Bisecting Method):
- TO create a tooling axis, an intersection is taken on the surface with the help of a new plane which is created at the middle of the surface.
- Then two lines are drawn on either sides of the intersection which are gone through the top most line patch.
- A point is given on the intersection at the middle.
- A bisecting line(tooling axis) is created at the middle using the two lines which are created earlier and the point is used as support element.
2) Process To Do Draft Analysis On Class A Surface:
- 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.
Final Part Body:
