RE: [CAD_CAM_EDM_DRO] Re: Stepper controller / driver for powerfeed

Yes - BUT a DC servo motor with an encoder is better than both !!

Dave

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of David G. LeVine
Sent: 30 September 2007 16:54
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Re: Stepper controller / driver for powerfeed



At 06:25 PM 9/29/2007, you wrote:

>Why bother with a stepper motor? Just hook up a DC motor with a
>potentiometer. Small, cheap DC motors are available from all the
>surplus sellers.

Short answer: DC motors will give variable speed but are lacking in
the precision and repeatability areas.

David G. LeVine
Nashua, NH 03060






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