RE: [CAD_CAM_EDM_DRO] Stepper Motor Travel?

What drives are you using? Virtually no one uses full step drives any
more so it is more than likely that your drives are 1/4 step if the
movement is 1/4". That would divide each of the normal motor steps into
quarters so you would require 800 steps from the computer to move one
rotation and your step increment would be .0000625".

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

> -----Original Message-----
>
> I'm finalizing my first router and don't think I have
> something setup right for the machine. I'm using 1/4-20
> all-thread for the leadscrews and have astrosyn NEMA 23
> motors that I think are 1.8 degrees per step. I setup the
> axis for 200 revolutions per step and 20 as the tpi which
> gave me an increment of .00025 inches/step. When I jog the
> machine say 1.0 unit I was thinking it would go 1" but it
> doesn't. It is more like .25" Am I calculating wrong or are
> the jog units not in in inches? I've set the units to inches
> in turbo cnc.
>
> Thanks,
>
> Barclay
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html