Friday night I put everything back onto the mill to make sure that with all the cabinetry and wiring changes (including a new Knee Motor) that I hadn't broken anything. Everything works as this video demonstrates. https://youtu.be/I6lvnYhlez4 The knee motion is 150 ipm which is really too fast for the bevel gears and they are very noisy. Going down the motor is faster than what gravity does to the knee mass and so the knee appears to catch up and then be pulled and then catch up and be pulled. But even at that speed the Bergerda Servo does not fault so that's good. The 3D printed gears are 3.2:1 turning the 0.25" per turn knee handle. I think I'll limit knee top speed to about 60 or 80 ipm. Sure is nicer than the 24 ipm I had with the 1200 oz-in stepper motor. At 24 ipm this AC servo and the knee are very quiet. Now to still figure out what to do with the combined Fault signal. John "ELS! Nothing else works as well for your Lathe" Automation Artisans Inc. www dot autoartisans dot com
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