I cannot take the drive for the spindle encoder directly from the spindle itself, so I have designed a drive train as shown above to make it possible. It involves making two 66 tooth gears, one of which incorporates the end float adjustment nut. The second driven gear is pinned to a 20 tooth pulley and then by toothed belt drive to the encoder via a second 20 tooth pulley. The whole plate rotates a few degrees about the pivot point (hidden by the encoder) such that the backlash between the gears is adjustable.
Uploaded by John Hinkley on 24/06/2021 13:51:22
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