On 17 August 2016 at 03:37, Martin Dobbins <[email protected]> wrote: > > https://www.teknic.com/products/clearpath-brushless-dc-servo-motors/ > > The trouble is I know nothing about servo driven spindles, would they have > the same problem with poor torque at low revs that the Sherline DC motor does?
Choose one with the same peak torque as the stepper that people are using, and you get the same as they have at low speed, and useful top speed. You still need to trade-off peak torque for spindle speed, but the Clearpath motors do look useful. However, the Clearpath motors that make 1800 oz.in don't go faster than steppers. But then 1800 oz-in is 12Nm, which is lots, possibly rather more than necessary. Dial in the cut you want to make, and put a torque-wrench on the spindle. Work from there. -- 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, 1916 ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
