Week 8 - Challenge 4 - Bumper

Aim: Create the Bumper Plastic component through the given Class-A surface.

Objectives:

• To create class B & C surface for the given component.
• To form the tooling axis and capture the surface properly.
• To check the feasibility of the component with a draft of 3 degrees.

Given Class A Surface

Method:

In order to obtain the proper draft analysis tooling axis is required and the following steps show how it is done.

• Analyse the given class A surface
• Pick a suitable axis from which the whole parts of the class A surface is visible
• For this model through my analysation im choosing the X-axis
• Extract a plain surface and untrim it
• Make a point on the center of the surface
• Create a axis system in the center point
• Make a line in the center of the axis system

• Now The Tooling axis is ready
• Perform Draft Analysis for the given Class A Surface

• Class A surface clear the minimum draft angle of 3deg

Construction of class B surface

• Extract the class A surface for the given thickness of 3mm inward
• After extraction create check the surface for patches
• If any patches were found clear them first
• Repair the surface using the suitable methods

Construction of C surface

• At First Create a boundry in the center part of the Class A Surface
• Then using the sweep command create a sweep with referene to the tooling axis and the boundary which we have created as the guide curve
• Then to reduce error while making sweep create seperate boundaries and then sweep
• Except the center use 93deg as a sweep angle for all
• so that it can clear the draft analysis
• Join all the patches in the surface we have created

• This is the C surface which we have got

Final trim

• As for the final trim join class A and Class C surface
• And then trim the Class A + C surface with Class B surface

• This is the Final product
• Now perform draft analysis on the final product

Draft analysis on Final Product

• The final product also cleared the 3deg draft angle

Now using the closed surface command create the designed product into a closed surface

ISOMETRIC VIEW

FRONT VIEW

TOP VIEW

GEOMETRIAL TREE