On Tue, 2010-04-27 at 13:50 -0700, dave wrote: ... snip > On the other hand if you have to build a spindle then you can make > choices. Doing a non-tiltable spindle would be my choice ( a bit > stiffer).
I have no head, so I'll need to find a head or make my own. http://www.henriksplace.se/cnc/new_machine_bt30_spindle.html http://www.cnccookbook.com/CCMillBeltDrive.html > I did implement the W in place of a Z and was not real happy with the > result. I used a gear-head servo motor of limited power which may be the > reason for my unhappiness. Moving the mass of X and Y to get Z seems > like a poor way to do it. I'm implementing a Z on that machine now and > it looks like < 50 W of servo motor will do it. My W has a glass scale > on to so I can do repeatable setups. > > Good luck. It should be an interesting project. :-) > > Dave Do you have a ball screw on your knee? I would think with a pneumatic knee counter balance, a ball screw and big servo, the knee should be a workable Z. Otherwise the head gets more complicated and adds another source for slop or flex. Though a head angular axis or two would be nice (like your Contour? http://www.lathes.co.uk/contourmaster/ ). -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
