CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Gecko Servo Control

Posted by Jon Elson
on 2002-08-21 14:12:18 UTC
astrehler wrote:

> Hello
>
> Is it possible to connect a linear encoder on the slides
> instead of an angular encoder on the motor.
> I would like to increase the accuracy of the machine this way,
> because this would eliminate pitch errors of the screws.
> I know that some "big" machines works like this.
> Does it work with a Gecko too?

If you have anti-backlash screws, then this should work fine.
The only problem is if you have plain Acme screws with more
than a few thousandths of backlash, the servo will rattle back
and forth across the backlash. If you set a lot of deadband (I
think Mariss has added this feature to the newer Gecko servo
units) then your positioning accuracy will be degraded by that
amount.

Jon

Discussion Thread

astrehler 2002-08-21 07:01:54 UTC Gecko Servo Control Larry Ragan 2002-08-21 07:26:03 UTC RE: [CAD_CAM_EDM_DRO] Gecko Servo Control Jon Elson 2002-08-21 14:12:18 UTC Re: [CAD_CAM_EDM_DRO] Gecko Servo Control