Week 10 - Challenge 2- Attachment Feature Creation (Dog House)

Aim:

To design the Dog House for the Door Trim following the design rules based on the given Class-A surface.

Tooling Axis:

The tooling axis defines the direction in which the mold core and cavity open and close. It should be defined first when designing a component.

Draft Analysis:

Draft analysis checks if the CAD part is manufacturable based on the applied draft condition. A draft angle is needed for proper mold release, typically between 0.5° to 1°, with 3° being the standard

Class B Surface:
Class B surface is the thickened or engineering surface where features like ribs, screw bosses, and dog houses are placed.

Class C Surface:
Class C surface is the surface that connects Class A and Class B surfaces.

Dog House Creation:
Dog houses prevent sink marks on the Class-A surface caused by screw bosses and address length issues when assembling with other components. They are also useful for perpendicular screw bosses in the tooling direction.

• C thickness: 40% of main wall thickness (T)

• Minimum width: 12 mm

• B height: 3-6 mm

• Minimum draft angle: 5 degrees

side core draft analysis:

tree structure :