Week 8 - Challenge 1 - Base Bracket Design

Draft Analysis

When a plastic component is made, we can observe a draft angle given on each side from the base which is less than 90 degrees. This is because in the criteria of making a plastic material the mold should release the material when finished. if the mold surfaces are 90 degrees the material won't release from the mold because of friction due to the contraction of the material when cooled.

To resolve this problem CAD engineers maintain a standard rule to design the plastic mold or die in such a way that there is no problem while ejecting the plastic component. So a minimum of 3 - 10 degrees of draft angle is given to every plastic component while designing.

Tooling axis creation

The tooling axis is the direction of drawing a sheet metal where the finished component is quickly ejected in a particular order and axis. The tooling axis is important for removing the material when finished.

CLASS A SURFACE

INTERSECT

MAIN TOOLING AXIS

DRAFT ANALYSIS OF CLASS A SURFACE

DRAFT ANALYSIS OF BASE BRACKET

ISO

FRONT

SIDE

TOP

TREE STRUCTURE