Re: [CAD_CAM_EDM_DRO] how straight is straight[rails]?

How do you use comensation for the leadscrews?

----- Original Message -----
From: "Doug Fortune" <pentam@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, April 12, 2002 10:54 AM
Subject: Re: [CAD_CAM_EDM_DRO] how straight is straight[rails]?


> carlcnc wrote:
> >
> > I had a guy ask me if I can make a router within .001 straightness
> > over 48", I am not sure this is possible with "normal" equipment.
>
> > Just to waste some time I checked my 5x8 in X.Y. best I can get
> > is +/- .005 over 6',using said straight edge.
>
> and I'll bet your steps are sub- 1/1000" !
>
> which means maybe you could meet that spec with software compensation
> on all the leadscrews. Note this means 3D compensation, which is
> a bit more involved (but not much) than just independent compensation
> of each leadscrew individually (ie the axes might not be orthogonal,
> so the 3D compensation would compensate for that).
>
> Doug Fortune
> http://www.cncKITS.com NEW-> 1KW power supply kits
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