For my edification, how is one to verify concentricity of flats to a centerline (ex: .001 T.I.R.) on a drill? In my readings so far it would appear that I would use a fixture with a V-Block and a dial indicator. But I do not know how to do it. Would someone tell me how to do it? There is not much of a surface to rotate on between the fluted body and the flattened portion of the shank (and the tool does have back taper - if that matters). I am including a portion of the drawing with most of the dimensions missing.
I am being told that the accepted practice is to take a micrometer and measure the distance between the flats and the opposite circumference/perimeter and see that they are within .001. Does this method of measurement verify the concentricity requirement? My gut says no, so I am asking for confirmation as well.
Thanks,
Doug
I am being told that the accepted practice is to take a micrometer and measure the distance between the flats and the opposite circumference/perimeter and see that they are within .001. Does this method of measurement verify the concentricity requirement? My gut says no, so I am asking for confirmation as well.
Thanks,
Doug
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