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sam On 11/17/2010 9:18 AM, Jon Elson wrote: > Igor Chudov wrote: >> What I mean by this is as follows: I would move tailstock and carriage >> as far to the right as possible to make room. >> >> I would take a big aluminum plate and mill it to fit on the lathe >> vee-ways, so that if I clamp it to the lathe bed it will stay solidly >> in one place. >> > There was actually a commercial CNC retrofit that worked approximately > like that. > I think it clamped a small XY (really XZ in this case) stage to the > toolpost of a standard > manual lathe, but maybe it really just clamped to the bed, I've never > seen one. > But, it would never be as rigid as the original lathe, and I hate to > give up the rigidity > of my lathe. The way this thing works now, I get a grin every time I > fire it up, just cut material, > no need to worry about chatter or anything else. > > I think a well thought out CNC retrofit could be made such that it only > slightly impacts the manual > use of the lathe. Take out the threading leadscrew and half nuts, as > you would always want to use > CNC for threading. With CNC, you can thread at a much higher RPM, and > that is usually a benefit. > A servo drive adapted to the X handwheel shouldn't affect the manual use > of that axis. With some ingenuity, > it should be easy to install the CNC ballscrew where the threading > leadscrew went. The only tricky part > might be making it easy to connect or disconnect the ballnut from the > apron, as it might end up on the back or inside > the apron. But, maybe just setting it up with the ballnut to the side > of the apron would make that simple. > Line up the nut and drop in a couple bolts, and it is a CNC. Pull out > the bolts and run the ballnut to the > end of the leadscrew, and it is a manual lathe without threading. And, > of course, keep all the parts so you > could put it back to completely manual use in short order. > > Jon > > ------------------------------------------------------------------------------ > Beautiful is writing same markup. Internet Explorer 9 supports > standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2& L3. > Spend less time writing and rewriting code and more time creating great > experiences on the web. Be a part of the beta today > http://p.sf.net/sfu/msIE9-sfdev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
