Week 9 - Attachment Feature Creation - Challenge 2

DESIGN AND DRAFT ANALYSIS OF DOOR TRIM WITH DOG HOUSE ATTACHMENT

Class A surface

Draft analysis

Draft analysis is done to check plastic parts moldability for the ease of removal from the injection mold. A tooling direction is required to create the draft in the component, which acts as the drafting direction.

Tooling direction

• Considering the ejection from the cavity of the mould after manufacturing the interior trim must have the nominal 3-degree draft angle (minimum).
• Hence the tooling direction is created by considering the above factor.
• A surface in the class-A was extracted and a point at the center is created.
• A normal line to the surface is created which is the tooling axis.

Procedure for Draft Analysis

• The draft analysis tool is selected.
• Then by enabling compass the axis system is aligned in line with the tooling axis, to define the draft direction.
• Now the surface or part which should be subjected to draft analysis is selected.
• Lock Direction is applied that fixes the compass and then the mode dialog box is formed by snapping at any point on the part
• The Color Codes are classified and Draft Angles are applied
• Then the Running point analysis is used to hover around the part to analyze the permissible draft angles and the analysis is saved.
• This gives the result of the surfaces which have positive draft in green code.

Draft Analysis of Class A

Class B surface

Class C surface

Final surface

Closed Solid body

Draft Analysis of Door Trim for 3 DEG Draft along main Tooling axis

Draft Analysis of Door Trim for 0.5 DEG Draft for Dog house along main Tooling axis

Draft Analysis of Door Trim for 0.5 DEG Draft for Dog house along Side Core axis

Feature Tree

Conclusion

The Class B & Class C surfaces and the Tooling Direction have been created and Published and the Door trim part body with dog house is developed. Both the Class A surface and the Solid body have been successfully passed the Draft Analysis.