RE: [CAD_CAM_EDM_DRO] Re: Poor Mans DRO

> Subject: RE: [CAD_CAM_EDM_DRO] Re: Poor Mans DRO
>
> DRO-350 http://www.shumatech.com build-it-yourself and very inexpensive
> compared to commercial. The Shumatech Yahoo group has some people on it
> who will build it for you (for a moderate cost).
>
> Matt
> -----Original Message-----
> From: jethrobodine [mailto:jethrobodine@...]
> Sent: Tuesday, January 27, 2004 11:27 AM
> To: CNC
> Subject: [CAD_CAM_EDM_DRO] Re: Poor Mans DRO
>
>
> I had the same questions. How do commercial DRO encoders like Sargon
> work?
> I searched Ebay hoping to find a used commercial DRO to put on my low
> dollar mill/drill and was surprised that there were just a few listings.
> I found Bridgeport type mills with DROs for not much more than the price
> of a DRO system alone, interesting.
>
> Does anyone have a suggestion for putting a moderately accurate,
> moderately priced 2 axis DRO on a low dollar mill? Are there any kits?
>
> BTW, Thanks to all who posted info about mouse guts.
>
>
> ----------------
> > Why is it that almost all DROs seem to use rotary encoders vs linear
> > encoders? (at least that I've heard of - bearing in mind I'm new to
> > this and haven't actually ever _seen_ a DRO... :-) Is it a matter of
> > it being easier to match the rotational step of a motor directly to a
> > a rotary encoder - vs trying to get a rotational step, once driven
> > through a lead/ball/etc screw arrangement, to match up to a linear
> > increment?
> >
> > Thanks for any input!
> >
> > Jim
>
>
>
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