Week 8 - Challenge 1 - Draft Analysis on a Fan Cover

1. We Created a tooling axis for the given Fan cover model meeting the requirements of the draft angle and performed the Draft analysis on the model.

Draft angle: A draft angle refers to that slant applied to the sides of most features of injection molded parts. Positioning of the injection angles is such that they run towards the direction of the mold’s pull and parting line. They help to release the molded parts from the mold easily.99% of your injection moulding design will require draft angle injection molding for a successfully made part. The angle tapers on the molded part’s surfaces. Therefore, the part can easily slide across the mold’s cavities and cores as you’re demolding.

BENEFITS OF DRAFT ANGLE:

• Reduces the chance of damage to the part due to friction during release.
• Reduces wear and tear and chances of damage to the mold.
• Ensures a uniform, smooth, unscratched finish when required.
• Ensures the integrity and uniformity of other surface finishes and textures.
• Reduces overall cooling time by lessening or eliminating the need for unconventional ejection setups.

Process:

First, we check the continuity of the given Class-A surface.

Check the tree directions (X, Y, Z-axis) and finally, we decided which is the best possible direction to produce a mold. That direction of the axis is called the Dummy tooling axis.

A fan with several drafted surfaces that is oriented in part location. That the Draft analysis initially assumes Z-axis direction.

In the Z-axis direction, the faces are either positive or negative draft. So the Z-axis we have taken as a dummy tooling axis we need to create a perfect tooling axis.

its a boundary sketch of given model.

drawing side lines on boundaries to draw bisecting line.

Add bisecting line for the two lines, as shown below.

inserting axis systems for plan choosing.

draw a bisecting line by using tool cleating X and Y axis

Drafting analysis tool.

The drafting angle should be more than 3% while testing using drafting analysis tool.

Finaly the given part can be manufactured.