CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Stepper Scaling issue

Posted by Al Schoepp
on 2001-12-20 21:25:13 UTC
I expect you've got gecko g201 drives which are 10Xmicrostep drives. This
means you need 10 pulses from the computer to equal one full step. That's
what I'm using as well, although I'm using CNCpro for the software so I
can't help with that end of your setup.

Al

At 05:03 AM 21/12/2001 +0000, you wrote:

>Hello-
>I have 3-axis EMC BDI installed on a 233MHz Pentium talking to Geko
>drives out the par port. I have this system attached to a Grizzly
>Mini-Mill system using some Oriental Motor 0.9deg steppers. This
>gives me 400 steps per rev. I have a timing belt drive connecting
>the steppers to the leadscrews with a ratio of 36:7. The lead screws
>are 4mm (6.35 TPI).
>
>Now here's the problem: The above setup should give me an
>INPUT_SCALE of about 13063, but when I use this the DRO is off by a
>factor of 10. i.e. a displayed value of 0.010 will only physically
>move 0.001.
>
>Any ideas?
>
>BTW: I have tried setting the INPUT_SCALE to 130630 which lock the
>machine up.
>
>-Chad
>
>
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Discussion Thread

chadalbr 2001-12-20 21:04:02 UTC Stepper Scaling issue wayne_j_hill 2001-12-20 21:14:04 UTC Re: Stepper Scaling issue chadalbr 2001-12-20 21:22:30 UTC Re: Stepper Scaling issue Al Schoepp 2001-12-20 21:25:13 UTC Re: [CAD_CAM_EDM_DRO] Stepper Scaling issue Tim Goldstein 2001-12-20 21:27:04 UTC RE: [CAD_CAM_EDM_DRO] Re: Stepper Scaling issue chadalbr 2001-12-20 21:34:32 UTC Re: Stepper Scaling issue William Scalione 2001-12-20 23:29:08 UTC Re: [CAD_CAM_EDM_DRO] Re: Stepper Scaling issue