Week 9 - Challenge 3 - Bumper

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

Objective :-

1. To create a proper tooling direction.
2. To perform draft analysis of the plastic component.
3. To design the Bumper plastic component by creating the B-Surface and C-Surface using the given Class-A surface.

Tooling Direction :-

The Tooling Direction is basically the direction that the mold pulls apart. 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. Drafts are only necessary in the direction of pull of mold.

Following Class-A surface is provided to design the Bumper plastic component.

Creation of Tolling axis:

To create the tooling axis first we have to check the best suitable direction for tooling by using the compass. the x direction is suitable for creating the tolling axis because in the x direction most of the surfaces are clearing while performing draft analysis. Generally tooling axis is created using bisecting line method but here A line normal to the surface is created in the x direction and considered the tooling axis.

Draft Analysis of Class-A surface :-

B-Surface :-

Class B-Surface is extracted from the A-surface and it is offsetted by 3mm 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.

Tree Structure :-

Views of Model

Front View :-

Top View :-

Left Side View :-

Isometric View :-

Conclusion :-

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