Week 8 - Challenge 3 - Coin Holder Design

Aim :- To design the Coin Holder plastic component through the given Class-A surface.

Objective :-

To create a proper tooling direction.

To perform draft analysis of the plastic component.

To design the coin holder plastic component by creating the B-Surface and C-Surface using the given Class-A surface.

Tooling Direction :-

Tooling axis is the direction in which mold or core and cavity opens. The ejection of the part from mold depends on the draft. A zero draft can result in difficult or no ejection due to shrinkage. It is recommended to add a minimum of 0.5 to 1 degree of the draft for non-textured surface & 3 to 5 degree of draft for textured surfaces.

Following Class-A surface has been provided to design the coin holder plastic component.

• First of all base face is extracted and point is created at the center of extracted face.
• Intersecting curves are created of Class-A surfaces.
• Line is created in verticle direction from the center of extracted face. This line act as a Tooling direction for this component.

Draft Analysis of Class-A Surface :-

B-Surface :-

Class B-Surface is extracted from the A-surface and it is offseted by 2.5mm in downward direction.

C-Surface :-

C-Surface connects the class A-Surface and B-Surface. It is created using Sweep command. Boundry of the class A-Surface is swept in 90 degree angle.

Trim Surface :-

C-Surface is trimmed along the B-Surface then it is joined to the A-Surface.

Final Solid Body :-

Draft Analysis :-

Draft analysis is performed based on colour ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values. Minimum draft angle is considered as 3 degree.

Views of Model

Front View :-

Top View :-

Right Side View :-

Isometric View :-

Conclusion :-

Thus the coin holder plastic component has been designed using the given class-A surface.