Week 8 - Challenge 3 - Coin Holder Design

• Aim:

To Create the Coin Holder Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

• Report:

I had exatract the surface from the Class A surface and then create a point on the surface and through that point create a line. create a intersection curve with Class A surface with plane and from that two parallel surface draw a line and from that line i had created the tooling axis by bisecting that two lines.

Tooling Axis : Tooling Axis is blue colour line.

Class A Surface : class A surface is given as input .

Class B Surface: I had created the class b Surface from the class A surface by extracting the surface then untrimming and extrapolation and trimed with other surfaces. the thickness of the final solid part is 2.5mm bacause that i had offseted the class B Surface from class A surface by 2.5mm.

Class B Surface: class b Surface is same as of class A surface but it offseted from class A . class B surface is alway behind the class A surface.

Class C Surface : when Drafting suface is parallel to tooling axis then we given draft angle of 0 to 3 degree, but when drafting surface or class surface is perpendicular to the tooling axis then we take sweep angle as 90 degree.

Class C surface join the Class A surface and the Class B surface size of the class C is thickness of the part.

Final Closed Surface of the coin holder is created by joining the Class A surface and Class C surface and that joined body trim with the Class B surface and created the final closed body.

I had created the solid body by using close surface command in part design from that closed body.

Draft Analysis :

Draft Analysis of Class A surface:

i had done the draft analysis of the class A surface with draft angle of 2.9 degree.

Draft Analysis of Coin holder plastic component:

I had done the draft analysis of coin holder it is given as below. The coin holder is easily ejected from mould at draft angle of 2.9 degree. i had change the value of draft angle from 0 to 3 degree it gives same result and it get easily ejected from mould.

i had done draft analysis with the tooling axis

draft analysis with draft angle of 2.5 degree

Draft Analysis with draft angle of 3 degree.

Isometric View:

Top View:

Front View:

Right Side view:

Left side view:

Publication:

Tree structure of Coin Holder design: