Do something cheap because I'm not convinced it's the beam. I've done troubleshooting on things like this, and sometimes it's stiffness and sometimes it's not stiffness. But it really doesn't make sense that it would sit there and ring after a move, so you also may have some tuning to do. Possibly a notch filter? Eric Keller Boalsburg, Pennsylvania
On Mon, May 13, 2024 at 4:50 PM Todd Zuercher via Emc-users <emc-users@lists.sourceforge.net> wrote: > > Anyone have any brilliant ideas to stiffen a woefully inadequate cross beam > on a gantry router without adding too much mass? What is there now is a 4" x > 8" rectangular 3/8" walled extrusion that is 145" long. > > Under normal jogging commands the two servos control the ends of this gantry > reasonably well, but while the axis is homing the thing shakes and wobbles > terribly bad. Also If I put a dial indicator in the center of the bridge and > hit the bridge forward or backward it will flex and wobble enough to displace > the dial indicator +/-0.03 and it takes nearly a dozen wobbles to dampen it. > But on the ends the servo's only have a few thousandths of give. > > I'm less concerned about the actual stiffness and more worried about > dampening the wobble. > > Todd Zuercher > P. Graham Dunn Inc.<http://www.pgrahamdunn.com/index.php> > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
