Week 8 - Challenge 3 - Coin Holder Design

AIM :- Coin Holder Plastic component through the given Class-A surface

DESCRIPTION:

Class A surface: Class-A surfaces is a term used in most in automotive design to describe a set of freedom surfaces of high efficiency and quality.

B SURFACE CREATION: As usual B surface is created using standard procedure by extract, un trim, extrapolate and offset commands. B surface of this coin holder is divided as base, side walls, top wall and outer surface. B surfaces of all these sub parts are created and trimmed together to join as single surface.

The offset distance is kept 2.5mm as component thickness is 2.5mm.

Class C surface: Class C surface are the surfaces which connects the class A and Class B surfaces.

Draft analysis: Draft analysis is performed on components where the ejection of materials happen after the material is made inside the tools.

TOOLING AXIS CREATION: Generally tooling axis is created using bisecting line method. But in the components where it has a bin, then the tooling axis is considered as a line normal to the base surface of bin. Same is done with this component. A line normal to base surface is created and considered as tooling axis

Draft analysis of Class A: Draft analysis is performed on Class A to check the validity of the tooling axis. During draft analysis, it was observed that bin walls are having 90 degree angle with base. There is no minimum draft given to the walls. Since we are not authorised to make changes in Class A surface, we can inform Class A designer to give minimum draft to walls

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