Week 8 - Challenge 3 - Switch Bezel Design

AIM:

The aim of this project is to create a Class B surface and Class C surface by using the given Class A surface and perform the draft analysis.

DRAFT ANGLE IN PLASTIC:

Draft is the providing angle or tapers on product feature such as walls, ribs, posts and bosses that lie parallel to the direction of release from thmold eases part ejection.

for doing the draft analysis, a tooling direction is required.

DRAFT ANALYSIS TOOL IN PLASTICS:

By using draft analysis tool, it identifies the zone (using colour code) and highlights the area which deviates from the specified values along a defined draft direction.

PROCEDURE FOR DRAFT ANALYSIS:

1. Set the customised rendered style
2. Select the draft analysis tool
3. Adjust the draft direction to molding axis using compass
4. Observe colour range

Green colour for draft angle less than 3 degrees

Red colour for draft angle less than 0 degrees

Blur colour for draft angle 0 to 3 degrees.

• 3 degrees is for nominal draft
• 0.5 degrees can be manufactured at ribs
• 7 degrees for textured faces

Steps involved to find draft analysis on given Class A surface of Base Bracket:

1. Create a Tooling axis of bisecting line along the intersection of mid plane of entine class A surface.

2. Create another tooling axis along the another side of interction by maintaining an angle of 3 degrees

3.Create tooling axis by bisecting the other two tooling axis and the line is stated as tooling axis.

DRAFT ANALYSIS ON GIVEN CLASS A SURFACE:

CREATION OF CLASS B AND CLASS C SURFACES:
Class B surfaces are created by using extra polated surfaces and defined joined by untrim the surfaces.

Class C surface:

this need to be trimmed by using class B surface and by sweeping the boundaries along the tooling direction.

Final C surface:

Closed Surface of body:

Draft analysis on closed surface: