Week 9 - Project - A pillar Design with Master Section
DESIGN AND DRAFT ANALYSIS OF A-PILLAR COVER
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 using bisector method.
- Lines are created with reference to the master sections given for the Dog house side walls.
- Bisector line for those lines are created which is the main Tooling axis.
- Side core axis is created with reference the master section of rib support.
Tooling axis
Main Tooling axis
Side Core 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 part
Attachment features Sketches
Closed Solid body
Draft Analysis of A-Pillar
Draft Analysis of A-Pillar Attachment Features along Side Core Axis
Feature Tree
Conclusion
The Class B & Class C surfaces and the Tooling Direction have been created and Published and the A-Pillar cover part body is developed. Both the Class A surface and the Solid body have been successfully passed the Draft Analysis.