Quote:
Originally Posted by InFlight
The the encoder is adjacent two 2.5 Inch OD CIM Motors that protrude 4.5 inches out the rear of the gearbox. Minimizing the encoder profile outside the gearbox provides no advantage, and is counter to having a more reliable gearbox system.
The mechanical specs for this encoder are on the website. Please take note of the hole tolerances. CAD is one thing; student repeatable machining of center holes to a 0.0003 inch tolerance on center is quite another. |
971 Encoder Mount Example Here
It's a pretty simple operation in the lathe - just drill undersize and then ream (as suggested by Austin). The doc you linked just establishes that the encoder shafts are made 2 to 6 tenths undersize, just means that you can probably get away with a 0.2500" reamer if that's all you have on hand.
You want a mount that prevents the encoder from rotating, and doesn't create any angular or parallel misalignment. The bent lexan design will allow the encoder to "float" a bit, which solves the parallel/angular problem.