Leonardo Marsaglia wrote: > About 120 RPM for the first tenths of milimeter, and then 50 rpm for the > last turns to finish it. This machine has no VFD, it uses a two speed > electric motor and I use it as it was originally. I can make it go faster, > but approximately that's the velocity I use to make them based on the > diameters I use. > I don't think you have any problem, then. At 50 RPM, it seems the grinder head could follow the typical engine cam profile just fine. You wouldn't want a 100 kg grinder head to be moved by a NEMA size 23 motor, but a proper choice of motor and drive should handle it fine. The travel should be quite a bit less than 25 mm from max to min on the cam, unless you are doing locomotive or giant marine engine parts.
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