Week 9 - Project - A pillar Design with Master Section

Tooling Axis Creation :

For this part tooling axis creation is done by using the mater section which is given along the Class A surface. Because in this master section the Dog house is there and the Draft for the wall of the Dog is given by the tooling axis. So can take tooling axis from the master section. This master section and Class A surface is given. next step is to sketch in the master section plane by using the bisecting line

Draft analysis :

1. The part created has to be changed to material mode in display frame.
2. Compass is enabled and align it along with the tooling direction.
3. Lock command is then classified and Draft angle is applied.
4. Color codes are classified and Draft angle is applied.
5. Running point analysis is used to display permissible draft angle.

CLASS B SURFACE

• After all the validation has been done, the class B surface is created by offsetting the class B surface to a distance of 2.5 mm
• After offsetting a large opening in the surfaces is found which is closed with the help of sweep and multi section commands
• The class B surface is then extrapolated in parts to trim it along with the class C surface

CLASS C SURFACE

• The class C surface which connects the class A and class B surface is created by sweeping the boundary of the class A and using the class A as a reference.
• The sweep is divided into several parts in order to avoid complexity
• Surfaces which are parallel to the tooling direction are swept with the tooling axis as reference and with a draft angle of 3degrees

PART:

The final trim is created by joining the Class A and C surface and finally trimming it with the Class B surface. The combination of class A, B and C surface is then converted into a solid with the aid of close surface command in the part workbench

DESIGN OF DOG HOUSE:

• The two main purposes of a dog house are to avoid sink marks and to house various other engineering features like screw boss, locators etc.
• The dog house should follow certain design rules which are stated below

• Doghouse wall thickness at the intersection of the part wall (C) should be 40% or less than the main wall stock (T).
• The height of ( B ) should be between 3.0 – 6.0 mm