On Mon, 2012-10-22 at 07:09 -0500, Stuart Stevenson wrote: > Do you mean the G&L that had the Allen Bradley control on it? > We found the X, Y and W (table) axes have a lot of backlash. We are > replacing the balls in the ball nuts. This has tightened them very nicely. > The X axis ball nut does not mount solidly to the table. We are working on > that right now. > The Y axis scale is broken beyond repair. I believe we can run just as > accurate using the motor and compensation. > > On Sat, Oct 20, 2012 at 3:53 PM, Jon Elson <[email protected]> wrote: > > > > > > Stuart Stevenson wrote: > > > > > Oh, yeah, I've been meaning to ask what ever happened to the > > K&T horizontal? Did you ever get the encoder fixed or replace > > it with something more robust? > > > > Jon
Hi Stuart, Indeed I think you can especially with tight ball screws. In fact, if you really want to be anal put a high count encoder eg. >= 10 K counts/rev on the ballscrew for position and an encoder on the motor for control; or emulate your 5 axis with I on the ballscrew and the rest on the motor. My ease of tuning increased considerably when I went from glass scales to encoders on the ballscrew. Of course, this is just one example so YMMV. ;-) I'm intrigued by Jon's work on the serial Fanuc encoders. Those could be really nice on a tight machine. Dave > > > > ------------------------------------------------------------------------------ > > Everyone hates slow websites. So do we. > > Make your web apps faster with AppDynamics > > Download AppDynamics Lite for free today: > > http://p.sf.net/sfu/appdyn_sfd2d_oct > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
