Week 8 - Challenge 4 - Bumper

BUMPER

A device for absorbing shock or preventing damage (as in collision) specifically, a bar at either end of an automobile. The plastic material which is used for the manufacturing of bumper is ABS(Acrylonitrile Butadiene Styrene).

Aim:

To design the complete solid model of Bumper with the help of Class A surface(input) by creating the tooling axis and analysing the draft angle.

Draft angle:

Draft angle (the degree of taper of the side wall of the mold or the angle of clearance designed to aid removal of a part from a mold) increase causes a linear decrease of the force required to remove a molded object from a mold. It is also used to avoid one of the plastic defects while casting is said to be a Drag lines.

Tooling Axis:

The tooling axis is a direction along which the core and cavity tends to move. Here the tooling axis is created in direction, which is normal to one of the Flat surface of the Bumper.

Draft Analysis of Class A surface:

The minimum draft angle for the design of plastic components is 3 degree.

Isometric view:

Front view:

Top view:

Side view:

Tree structure:

Draft Analysis of Final model:

Here the complete solid model is achieved the minimum draft angle of 3 degree.

Conclusion:

Thus the complete solid model of the Bumper is formed from the Class A surface(input) and the analysed draft angle is 2.9 degree