Subject:
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RE: Controlling a Unimat lathe (fwd)
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 17 Feb 2000 13:16:49 GMT
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Original-From:
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Jim Choate <ravage@einstein.ssz*stopspam*.com>
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Viewed:
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777 times
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---------- Forwarded message ----------
Date: Thu, 17 Feb 2000 10:06:56 -0000
From: Brian H Le Page <b.h.le-page@surrey.ac.uk>
To: sci-tech <sci-tech@einstein.ssz.com>
Subject: RE: Controlling a Unimat lathe (fwd)
I have come across people doing this (CNC and Ballscrew conversions) on the
rec.crafts.metalworking newsgroup. Have a look here as an example.
http://www.ktmarketing.com/CNC.html
---------- Forwarded message ----------
Date: Thu, 17 Feb 2000 00:35:54 GMT
From: James Powell <wx732@freenet.victoria.bc.ca>
To: lego-robotics@crynwr.com
Subject: Re: Controlling a Unimat lathe
In lugnet.robotics, Peter Danielson writes:
> I have an old Unimat (model 14412) lathe that I would like to try to • control
> with one of our lab's Mindstorms kits. Does anyone have any suggestions for
> ways to connect the motors to the two lead screw adjusting wheels?
Ya, go buy a stepper motor...
The problems would be backlash and power. Even the best (IE, using a 1:40
reduction, with the angle mesured on the imput shaft) would likely put out
too
little power. Backlash is the harder one...you could calculate it, but
still...CNC with a non designed machine is not a fun situation. 'real' CNC
machines have ball threads which have 0 backlash. So, if you try, you
likely
can do it...give it a go and let me know! I have 2 small lathes (a Perris
and a
Busy Bee 6") that would look quite good with CNC on them for $300 or so...
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