Hi Matt, As Sam ant Todd mentioned, the large deviations from the path are expected given your settings. Here's why the deviation seems to be different in different parts of your code:
1. The inner cuts start and stop at the lower left corner, and transitions from feed to rapid are not blended, so it has to stop at this point. 2. The inner cuts are done with 4 lines, which the trajectory planner will blend into circular arcs as much as needed to reach your maximum speed. 3. This deviation doesn't happen in the outer cuts, because each corner has a small arc connecting the lines already, so no blending is needed. -Rob On Thu, Aug 21, 2014 at 8:33 AM, Todd Zuercher <[email protected]> wrote: > With not tolerance for the g64 setting, Linuxcnc is going to go as fast as > it can and still "touch" every line segment. So with your machines > acceleration settings, what is the smallest arc radius that it can make at > 400 ipm? That is how much each corner will be rounded. > > ----- Original Message ----- > From: "Matt Shaver" <[email protected]> > To: [email protected] > Sent: Wednesday, August 20, 2014 10:54:27 PM > Subject: [Emc-users] Possible Trajectory Problem > > I've experienced some behavior that might be a bug. The relevant > information can be found at: > > http://www.mattshaver.com/gas/ > > Running the CAP.TAP program results in the motion depicted in > Screenshot.png. Adding a G61 or G64 P0.005 to the program produces a > trajectory that closely follows the expected path. Significantly > slowing the feedrate also produces normal results. > > Is this a bug, or is it simply default G64 behavior on a machine > configured as this one is? > > Any comments would be welcome! > > Thanks, > Matt > > > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
