RE: [CAD_CAM_EDM_DRO] General Question REgarding Stepper vs. Servos

> -----Original Message-----
> Not trying to start a religious war about stepper and servo
> systems, just trying to understand the real differences.
>
> Daniel J. Statman, Statman Designs
> www.statmandesigns.com
> dan.statman@...
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html

From my experience I would agree with your conclusions. On a system I
had with half step drives and software that put out a ragged pulse
stream I had huge resonance problems. I could rapid it at 60 ipm or so,
but if I tried to cut a 1/2" radius circle at 5 ipm I would loose steps
every time as it went around the circle. Now on other machines I have
with a microstep drive and software with a much better pulse pacing they
are rock solid all the way up to the point that the steppers just poop
out. On my Bridgeport I am running servos with Gecko G320 drives. The
only difference between that and the results I got when I had steppers
with G210s on it is that I can accelerate much harder now and the max
rapid it about double. Repeatability and accuracy is identical.

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