Week 8 - Challenge 2 - Base Bracket Design

Aim: Create the Base Bracket Plastic component through the given Class-A surface and performing a draft analysis for the same.

Procedure:

• Check whether the given class A surface is joined and there is no discontinuity.
• Use join or boundary command for this
• Check for the suitable tooling direction. Usually, a perpendicular axis to large flat surface or hole is considered as a tooling axis.

From Z direction all the features can be cleared, so create the dummy tooling axis along Z direction

Bisecting method of tooling Axis:

• Find the surfaces which would be difficult to be tooled. Create a plane and bisect it with the class A surface
• Create lines using point to point method

• Create a Tooling axis using bisecting method.

Draft Analysis of a class A surface:

• Insert->Analysis->Feature Draft Analysis
• Drag the Compass and align it with the tooling axis
• Click on the Class A surface. If the colour is Green, the draft angle is more than 3 degrees and it will clear the tooling axis, if colour is Red, the draft angle is more than 0 degrees and less than 3 degrees, if colour is Blue, draft angle is less than 0 degrees and it won’t be clearing tooling axis.

Class B surface:

• we will start with the creations of ribs by extracting them.
• Untrim them.
• Extrapolate all the Untrimmed surfaces.
• Trim all the faces.
• Offset both ribs by 2.5mm(thickness of the component).
• similarly all the ither surface will be the same idea.

Class c surface:

• Extract outside Boundary of the Class A surface.
• Sweep the Extracted Boundary using Tooling direction as the draft direction for 3mm Draft angle.
• Then extract the hole boundaries and Sweep with 3 degree draft angle.

Join class A with C surface:

Solid model:

• Now Trim this Join surface with Class B surface.
• Define Part Workbench. Use Close Surface tool to produce a solid body from the surface.

Draft Analysis of Solid Model:

• Insert->Analysis->Draft Analysis
• Drag the Compass and align it with the Tooling axis
• Click on theSolid body and it will be differentiated with colors according to the Draft angle of the body with the tooling axis. If the colour is Green, the draft angle is more than 3 degrees and it will clear the tooling axis, if colour is Red, the draft angle is more than 0 degrees and less than 3 degrees, if colour is Blue, draft angle is less than 0 degrees and it won’t clear tooling axis and draft angle must be changed.

Various orientation:

Publication:

Tools->Publication

Select Tooling axis, Class A, Class B and Class C surface and select Publication from Tools option in the tools bar.