Hi will it be a good idea to use standard ball screw support block to hold such tool holder? Ball screw support block one fix and another with float mount on flat plate can be very economical way to assemble home made spindle. If add timing pulley to the shaft of tool holder than only left is mount of some motor. thanks aram
> > > On Fri, 29 Jan 2010 08:36 -0800, "dave" <dengv...@charter.net> wrote: >> Hi Aram, >> >> ER series collets make a good system. ER20 would allow you to go from 1 >> mm or so to .500 inch in overlapping collets. I use ER20's on my cinci >> and they work just fine. >> >> ER20's are small enough so you could turn down the shaft just behind the >> collet section and use smaller bearings therefore giving you some chance >> of increased bearing life. > > $51 gets you an ER-20 collet chuck with a 3/4" diameter x 4" long > straight > shank that is accurately concentric to the collet holder. > > http://www.maritool.com/Tool-Holders-Straight-Shank-ER20-Straight-Shank/c23_28_176/p337/ER20-3/4-4.0-STRAIGHT-SHANK-COLLET-CHUCK/product_info.html > > If you can find suitable bearings with 0.750 ID, all you'd need to make > is > some good spacers to locate them axially (and of course an accurate > housing). > > Of course any system that involves a collet holder integrated in the > spindle > means that Z won't be repeatable after a tool change. You'll have to > touch > off each time. > > Regards, > > John Kasunich > -- > John Kasunich > jmkasun...@fastmail.fm > > > ------------------------------------------------------------------------------ > The Planet: dedicated and managed hosting, cloud storage, colocation > Stay online with enterprise data centers and the best network in the > business > Choose flexible plans and management services without long-term contracts > Personal 24x7 support from experience hosting pros just a phone call away. > http://p.sf.net/sfu/theplanet-com > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
