Week 8 - Challenge 4 - Bumper
CHALLENGE 24 – BUMPER DESIGN & DRAFT ANALYSIS
Aim: Given Class A input surface, complete the thickened Bumper part and perform draft analysis on the completed part.
CLASS A SURFACE
We were provided the Class A Surface as below.

Fig 1 – Original Class A Surface
We then created a Tooling Axis simply by filling in the hole, and taking the Normal to the filled hole.

Fig 2 – TOOLING AXIS (Normal to Filled Hole)
Thickened Part
After creating the Tooling Axis, we created the Class B and Class C surfaces and trimmed them with the Class A surface. For the Class B surface, we offset the Class A surface, and then filled the patches that didn’t offset completely/properly. Finally, we used Close Surface to produce a final, thickened, solid part.
Feature Tree




Fig 3 – Feature Tree
VIEWS
Below are four views of the final part (Iso, Front, Side, Top):
Iso

Fig 4a - Iso

Fig 4b - Front

Fig 4c - Side

Fig 4d – Top
Draft Analysis
The Draft Analysis as shown above validated the design for manufacturability.
Conclusion: We were able to successfully model the part and verified it for Draft Analysis.