Week 10 - Challenge 2- Attachment Feature Creation (Dog House)

Step 1: The entire Class A surface was analyzed properly for any surface discontinuities and other irregularities.

Step 2: Creation of Tooling Axis:

• A particular surface was identified as a potential surface on top of which the tooling axis was to be created.
• A point was made on this surface and a line was drawn on that point with it along the y-axis.
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• Draft was checked
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Step 3: Creation of Class B surface.

• An offset of Class A was taken just above it with a value of 2.5 mm.
• The missing surfaces were made taking offset of those individual surfaces: untrimming them, extrapolating them, and then trimming them together. And finally giving fillet to the edges.

Step 4: Creation of Class C surface.

• The boundary of Class A was swept part by part with a draft of 3 degrees for the bottom boundaries and 90 degrees for the top boundaries.
• Then all of these individual swepts were joined together.
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Step 5:Creation of Class A+C

• Class A and Class C surfaces were joined together.

Step 6: Class A+C and Class B were trimmed together.

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Step 7: Now this final trim was converted to a solid body using the Close Surface command.

Step 8: Dog House Creation.

• A surface was extracted and the following sketch was made on it.
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• This sketch was swept with an angle of 1.5 degrees wrt the draft direction.
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• The top was closed using Multi-sections Surface and joined with the swept.
• This is now thickened with Thick Surface with an offset of 2 mm.
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• The top and side walls were given a draft of 0.5 degrees using the Side core Tooling Axis.
• This side core tooling axis was created on the same point as the main tooling axis but along the X axis.
• Edge fillet of 1 mm was provided to the edges.
• A line was created and extruded and offset by 4 mm. An multi-extract of the inner side of the solid was taken and offset by 1 mm. Now, both the offsets were trimmed.
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• This trim was used to split the solid body created.
• These surfaces were given a draft of 0.5 degrees. Also fillet of 0.5 mm was given.
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• A similar dog house was created on the other side of the main solid body.

Now both of them were added to the main body using Union Trim.

Draft Analysis:

Using Side core Tooling Axis

Using Main Tooling Axis