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

Attachment Feature Creation (Ribs & Screw Boss)

AIM:

• To create the door handle component from the given class-A Surface.
• To create the tooling axis for the given class-A surface meeting the requirements of the draft angle.
• To attach B side features in the component.
• To perform the draft analysis on the model.

CREATING TOOLING AXIS:

• The Tooling direction is basically the direction that the mold pulls a part. The mold is built in two separate pieces, basically.
• 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.
• Open the given CAT part file

• Check for gaps between surfaces for that click on join and then preview.
• If there’s any gap between the surfaces join them with a maximum tolerance of 0.003 mm.

• Extract the boundary and dissemble the boundary.
• Find the correct tooling axis where the material doesn’t interfere with the tooling axis and all the elements can be created.

• The tooling axis is created for the component by bisecting two axis from x and y planes.

PUBLICATION:

• Publication is done to the component to make it visible and navigate easily.
• A separate tree structure is formed under the main part.

CREATING 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 edges should be filleted 12.5mm to get uniform thickness.
• Perform trims one at a time so that it will be clear to understand.

CREATING 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 90 degrees > preview.

• After getting sweep then trim the output with class B surface to get final output.

• Join both Class-A-C and Class B.

• Now open part design workbench and using close body surface create a solid of the component.

RIB FEATURE CREATION

• RIB creating

• Screw boss creation

DRAFT ANALYSIS

NOTE:- In above image the Red mark is of negative draft wich is less than (0.5deg).

VIEWS