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Internal involute spline
bill_daniels
Member Posts: 278 ✭✭✭
I've been struggling with this for months.
I have had a gear with internal involute spline made from an Onshape model. This gear must slip over a splined motor shaft. Alas, this gear does not fit - not even close.
The motor shaft is an involute spline which comes with a detailed specification (ANSI B92.2M, 24 teeth, 1.0 Modulus etc…) This specification was on the 2D drawing I provided to a CNC shop along with a 3D STEP file. An explanation in a drawing note explained this specification was for the external spline on the motor shaft and I asked them to make an internal spline inside the gear to slip over the motor shaft. Unfortunately, the 3D model of the gear contained a cosmetic spline feature. They just made the gear on their CNC machine using the STEP file without looking at the drawing. Of course, the cosmetic spline doesn't fit
The CNC shop acknowledges they should have seen the note and consulted with me before cutting the gear and they have offered to re-make the part but are demanding I change the 3D file so their CNC machine can make it. I can't find a way to do that in Onshape.
I need some help here…
Bill Daniels