Make covers that fit over and hold the encoder. Snap the encoder into the inside of the cover, and the corners of the cover have holes to put screws into the existing holes in the motor end cap. This would have the benefit of protecting the encoder and the end of the motor shaft.
On Sunday, June 25, 2023 at 03:33:26 AM MDT, John Dammeyer <jo...@autoartisans.com> wrote: The problem is the rear shaft isn't that long. I went through the process of considering an adaptor plate that fastened to the 4 holes. There may be a fancy way of making a thick plate with a thinned area just for the encoder mount. But it would have to have a stud protruding away from the back and then a nut. The plate can't be thick enough to hold both the encoder and threads for screws and still have the encoder disk mount to the back shaft. The alternative would be to press fit on a shaft extension and then use the stepper motor to turn the extension to be symmetrical with the axis of the motor shaft. Then I could use a thicker mounting plate. Or, given that the motor drives a 25:1 planetary gear and I'm really only interested in tracking motor revolutions and detecting stall conditions (hence quadrature) I could likely get away with a custom disk and some slotted sensors too. Also more complicated to build. Trying to keep it simple and the easiest is to have the encoder screw directly to the back of the motor. However with StepperOnline motor by the time it's here in Cdn $ it's over $100. So I can take the risk and drill holes in the back. Or get creative with other approaches. John _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
