I'm answering al old thread here, but to me it seems a simple "path following" parameter problem. Are you in exact path mode (for finishing ops) or in tolerance path mode (for roughing)?
See the G61 and G64 codes in EMC2 documentation: http://www.linuxcnc.org/docs/2.1/html/gcode.html Switch to tolerance path using G64 and your machine wont slow down during a curve, but will only stay within your specified tolerance to keep velocity up. If you use CAM software to generate your gcode, it may not specify G61/64 codes at all. Usually you can edit the gcode preprocessor file in your CAM program to specify G61 for finishing ops and G64.x for roughing ops. Colin On Mon, 2008-09-22 at 14:16 -0700, Jimmy Schneiderman wrote: > To All, > > I built a Mill CNC with the 30m (X) x 6m (Y) x 4m (Z). > > The CNC was using a controller for 3 axis and it were working fine. > > My decision to change for LinuxCNC is in order to use 2 new axis that > the older controller did not support. > > Server motor is connected thru 2 MOTENC-Lite PCI boards from Vital > System. > > Speed is 12.000 mm/min in a straight line. > > During milling at 4.000 mm/min, when it comes to a curve the speed > slow down to 2.000 mm/min. > > When making a 1 meter circle the speed does not top 2.000 mm/min and > it does not move continues. It stops and goes several times, shaking > all the structure. > > If anyone has any idea what parameters should I change, please let me > know. > > Regards, > Jimmy ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
