What about, instead of it actually floating, if you were to soften the structure a little so it could handle the impact of hitting on the probe operation? I'm envisioning the torch mounted on rubber standoffs resembling the body mounts to a car. I'd think they could allow enough flex to keep from breaking stuff, but be rigid enough for accurate cutting, as accurate as plasma can be. Again I'm not all that familiar with plasma tables and their results, I know that the one I ran occasionally and bent parts from every day, would be doing great to give 1/16 inch repeatability cutting 13g steel.
Jim On Mon, Nov 12, 2012 at 11:14 AM, andy pugh <bodge...@gmail.com> wrote: > How I would do it: > > Use a trapezoidal screw and a delrin nut. > > Allow the nut to float axially in its housing, with a microswitch to > detect when it has moved. > > Normally the head hangs on the nut. When the head touches then the nut > slides down in its housing, operating the microswitch. (Use the probe > G-code) > back off to the required height + the known actuation distance and > start the arc. > > I think I would use a leaf-spring suspension to supply the required > angular constraint on the nut. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > ------------------------------------------------------------------------------ > 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_d2d_nov > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > 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_d2d_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
