On Sun, 21 Oct 2007, Dave Keeton wrote: > How does this control handle 3d interpolated arcs? Anyone know? The > reason I am asking is we have a machine that has a Fanuc10M control on > it. It goes from 80ipm down to about 20ipm while cutting these arcs. > Almost all profile cutting on landing gear is done this way.....It's > killing our job rates....going to bed now.....Dave is tired!
Currently emc only handles arcs in the xy xz and yz planes, but this is more of a limitation of g-code than the way emc is built. It does blend arcs together quite nicely as you can see here at the bottom of the page: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl The yellow lines are deviations from the programmed path to satisfy the acceleration constraints. Does your machine have a slow axis on it? I was mucking around with the arc code today, and it seems that emc will use the acceleration of the slowest axis involved in an arc move, which is sub-optimal. It shouldn't affect a smoothly contoured part very much though. >> You could use the program halcmd to link buttons in tkemc to signals >> connected to ladder inputs. You'll need a bit of tickle language to do >> that but this stuff can be hacked together from a couple of other Tcl/Tk >> programs already in the source. I would suggest at least looking at the HAL system and pyvcp ("virtual control panel") before trying to mess around with Tcl. -fenn ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
