On Mon, 16 Dec 2019 at 20:10, Gene Heskett <[email protected]> wrote:
> https://www.cnczone.com/forums/uncategorised-metalworking-machines/172 > >314-cnc.html > > No, but the lack of a geardown makes the step a major portion of the > error, whereas the use of a much smaller stepper with 8/1 or better on > that proposed center shaft should turn the steps so slow as to have the > steps disappear into the general mechanical noise. My conversion used a little (NEMA23) servo rated at 25W and much less torque than a comparable stepper. It had enough torque for most jobs. A stepper would have had plenty of torque. 90:1 worm ratio means a full step is 0.02 degrees. That's not a lot. And then a bit of microstepping on top would be fine, I think. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
