Challenge

Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

AIM:

To create the ribs and screw bosses by using the design rules on the plastic door handle component.
The ribs and screw bosses are provided to the plastic door handle part to get the stiffness to withstand the impact load.

TOOLING AXIS:

Tooling axis is the defined axis to perform the manufacturing process within the injection molding according to its direction.

CREATION OF TOOLING AXIS:

Analysing the class-A surface by manual visualizing to see which direction is most suitable.
According to the 3D view, the direction of the tooling axis to be chosen is perpendicular to the flat surface.
Create a point at the center of the bottom flat surface
Create a line using the point-direction option and select the reference of z-direction for the line and name it as a dummy tooling axis.
Create a parallel plane to the dummy tooling axis with reference to the yz plane, then intersect the plane with the Class-A surface.
From the intersection profile create two lines that are parallel to the dummy tooling axis and make the bisecting line using the reference of two lines with a center point.
A formed bisecting line is called as main tooling axis.

DRAFT ANALYSIS:

The analyzing of the model should maintain the nominal 3-degree draft angle to the tooling axis.
Draft should be given to the plastic component to reduce the wear and tear and improve the production quality and accuracy while ejecting the part from the mold cavity.

How to perform the draft analysis

1. Go to insert < analysis< feature draft analysis.

2. Align the tooling axis with a compass.

3. Click on the surface to see whether it is in permissible limit draft values or not.

4. The entire surface should be green in colour.

DRAFT ANALYSIS FOR FINAL COMPONENT: