Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

Aim:

To create the rib for the screw boss considering the design rules in the door handle.

Steps to reach the final part:

• To create the tooling axis using given Class A surface
• To create and ensure the draft analysis
• To create the Class B Surface
• To create the Class C Surface
• Join Class A, Class B & Class C surface for door handle
• To creae the close surface the door handle
• To create the B side features ribs and screw boss.

Tooling axis

The Tooling Direction is basically the direction that the mold pulls a part. The mold is built in two separate pieces, basically. You have a Cavity side and you have the Core side. The Core pulls apart from the Cavity and that's the Dye line or the Tooling Direction.

Draft analysis:

The Draft Analysis command enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on color ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values. The draft angle is 0.99 degree clears the class a surface.

Class B Surface:

• Extract the surfaces from the class A using multiple extract and untrim them.
• Use Extrapolate to make sure that all the untrims are properly intersected to trim and offset the surfaces to 2.5 mm to create the thickness.
• Trim the extra surfaces using trim command.
• Insert them into new geometrical set and name it with respective part names.
• Apply fillets to the model after creating the entire surface.
• If the edges are outside the fillet value will be added to the thickness of the component and if the edges are inside, the fillet value will be subtracted from the thickness of the component, for instance the thickness of the component Is 2.5mm the fillet value is 15mm so the outside portion value should be 17.5mm and inner eges should be filleted 12.5mm to get uniform thickness.
• Perform trims one at a time so that it will be clear to understand.

Class C surface:

• Extract the boundary from the class A surface using boundary command.
• Using disassemble tool to divide the boundary as the boundary contains domains.
• Use sweep command > choose profile type line > subtype as with draft direction > choose guide curve and draft direction > draft angle as 0.99 degree > preview.

Final door handle with draft analysis:

Join the class A and class C surface and then trim into the class B surface

B side feature creations:

The B side engineering features create by follow the desgin rules.