I have some work in progress which enables workpiece Z correction by loading a mesh of probe points into kins. It was inspired by the recent thread on warped PCB board milling.
this isnt ready yet, but a starter for the interested: http://git.mah.priv.at/gitweb/emc2-dev.git/shortlog/refs/heads/probekins In particular, I need to reduce external package dependencies and finish automatic mesh generation from probed points (aka triangulation) - Michael Am 11.01.2012 um 06:53 schrieb gene heskett: > Hello all; > > In carving these pcb's for the encoder, I only have room to clamp one edge, > the back edge of the pcb. > > I carved a dead flat pocket about 30 thou deep and slightly larger than the > raw pcb material, gouging out the left front corner so the board, when > pulled left & forward, isn't riding the corner, but is located by the left > & front edges of this plywood containing the milled pocket. But when I add > a small board across the rear edge of the board and clamp down on it, the > front edge of the board rises slightly, about 5 thou I'd SWAG. > > Is there a way to couple the y axis position to a small z axis shift so > that the engraving tool will stay within a thou or so of the correct depth > relative to the warped pcb's surface by driving the z deeper as y moves the > table forward to work on the rear portion of the pcb. Something on the > order of 5 thou down at the rear of the board, over a y travel of 1 inch, > would help, a lot. > > I've read the pages about mapping screws, but ANAICT, that can only correct > the same axis for errors and wear in that axis's drive, but I don't see a > way to make z move as y moves. > > Is it there & I'm too dumb to find it? > > Thanks everybody. > > Cheers, Gene > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > My web page: <http://coyoteden.dyndns-free.com:85/gene> > <Kensey> RMS for President??? > <RelDrgn> ...or ESR, he wants a new job ;) > > ------------------------------------------------------------------------------ > Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex > infrastructure or vast IT resources to deliver seamless, secure access to > virtual desktops. With this all-in-one solution, easily deploy virtual > desktops for less than the cost of PCs and save 60% on VDI infrastructure > costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
