RE: [CAD_CAM_EDM_DRO] Mixing servos & stepper in same system

You already have double the reduction on the knee if you gear at 2:1
because the screw is 10 tpi compared to 5 tpi on X&Y.

Not quite sure what it is your are asking if Mach1 can do??

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline

> -----Original Message-----
>
> Tim,
> Thanks for your response. I thought I'd be more
> comfortable using servos on all the axes. I checked the
> torque on X & Y, and even with the acme screws, they are
> pretty free running with 5 TPI. The Z screw on the knee has
> 10 TPI, and using the "fishing scale method" (8 lbs. @ 8"), I
> calculated 1,024 oz/ins. I'm planning to buy servos that put
> out 600 oz/ins of torque. If I gear X & Y @ 2:1, and gear Z @
> 4:1, does that seem to make sense? Can Mach I software
> provide the feed and control on Z, and speed control to the
> VFD, for various size drills?
>
> Marv Frankel
> Los Angeles