Week 8 - Challenge 4 - Bumper

Challenge 4 - Bumper

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.

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

FOR DRAFT ANALYSIS:

First we analysis the model and then choose dummy axis in x and y direction.
As we intersected to proceed we observed that the side walls are not given any draft. Hence we assume the axis normal to the base surface and parallel to side walls. This surely will create problems because a minimum draft has to be provided.
As class-A surface is made by other designer only he is authorized to make changes, so we look over this to complete the coin holder for practice.
Now we go to insert< analysis< draft analysis and follow usual procedure to do the analysis.
Align the compass and click on the surface and as expected the model is mostly in red color i.e. negative draft with respect to the axis.
To correct it to as best as we can we moved the compass a bit till we got most of the surfaces in green and lock that position.
After hitting ok, we change the direction of the line from z axis to compass direction. The axis will align itself accordingly.
NOTE: as the side wall does not have draft, this result was expected and few areas need correction. But still we are moving forward to
complete the model

Draft analysis for the final part body-

Isometric view-

Front view-

Side view-

Top view-