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3DDave said:How is the gauging diameter established with the set-up and how are out-of-round variations in the datum feature diameter eliminated as sources of variation, including those which tend to cancel actual profile deviations as measured with this setup?
3DDave said:The perpendicularity error may be calculated as a cosine error, or 2% less if the indicator is 10 degrees off perpendicular.
Brian Malone said:your Datum A appears to be stock finish, this may complicate or invalidate my suggestion of using a simultaneous indicator setup.
Eric Gushiken said:I think technically you'd have to have a collet that is almost 190mm long in order to accurately grab the entire virtual condition OD.
Eric Gushiken said:The one on the left needs a secondary datum reference to lock down the translation before you can check profile.
pmarc said:The dial indicator is not moving axially. How is this going to ensure that the actual cone angle is not off by more than the specified profile tolerance allows?
3DDave said:Though I see no evidence of it, conceivably they could set the zero for the dial indicator for each axial location, making a series of circular steps along the cone rather than making linear sweeps.
Burunduk said:Is there a chance they could project the cone at the modified setup (with solution for a stable datum A) on an optical comparator?