Re: [CAD_CAM_EDM_DRO] Re: Motor errors at slow feed

kdoney_63021 wrote:

>Jon,
>Nice to talk to you again. The error doesn't occur on the R.1313 but
>on the next line (Y0 X-0.2625 R0.2625). I am using gecko 210 with the
>multiplier the steps/in is 20000.
>

Well, I just noticed that the radius was smaller than the cutter, but I
didn't work
long enough to figure out whether that was an inside or outside turn.
If it is an
inside, than clearly the CNC program SHOULD have told you the tool was
too big
for that radius. EMC would have reported that as an error. If it is an
outside
turn, then I don't knw what the problem is. And, I don't know why it should
grumble when moving slowly. If your Gecko drives are tuned right (by
adjusting
the pot for minimum humming when moving slowly) they shouldn't grumble at
any speed. I certainly saw no grumbling, resonance or anything like
that when I
had Gecko 201A drives on my minimill. The quietest, smoothest stepper
system
I've ever seen!

> Mach2 is the original control but I
>tried it in Turbocnc too. Did you make the gecko connection board for
>your universal stepper controller?
>
>

Yes, it is done, and on my web pages, at
http://jelinux.pico-systems.com/gecko.html

Glad to hear from you, too. How did you fare with the hurricane?

Jon