The motion I see in the link looks like I would expect it to look. Are you expecting cutter comp on just the X axis or just the Z axis or both X and Z?
On Jul 2, 2017 5:12 PM, <[email protected]> wrote: > I admit that compensation confuses me on a lathe. I have no idea if it is > cancelling or changing - but why would it change? There is a single G42 at > the beginning of the routine. The routine is simply cutting a taper (as > can be seen by the steeper lines in the back plot) starting at > CurrentDiameter and ending at X-End, Z-End. > -Tom > > > On Jul 2, 2017, at 5:54 PM, Stuart Stevenson <[email protected]> wrote: > > > > Are you sure it is cancelling cutter comp or is it changing cutter comp > to > > the other side of the programmed path? > > > > On Jul 2, 2017 4:50 PM, <[email protected]> wrote: > > > > Yes, I do see different results, the line becomes horizontal rather than > > angled. But my question is, why when cutter compensation IS on, are the > > moves treated differently. By the way, even if we change the first G0 > to a > > G1, we still get the angled line. So, it isn’t G0 vs G1, it is simply > that > > the first move is lower than it should be (by the tool diameter in the > tool > > table) and the second move in Z causes X to rise to the compensated > value. > > How/why? > > > > -Tom > > > >> On Jul 2, 2017, at 5:29 PM, Stuart Stevenson <[email protected]> wrote: > >> > >> You SHOULD see different results. > >> > >> On Jul 2, 2017 3:46 PM, <[email protected]> wrote: > >> > >>> I don’t disagree but am failing to see the connection to my question…? > >>> -Tom > >>> > >>>> On Jul 2, 2017, at 4:16 PM, Stuart Stevenson <[email protected]> > wrote: > >>>> > >>>> It has always been my experience G40 cancels cutter compensation. > >>>> > >>>> On Jul 2, 2017 2:44 PM, <[email protected]> wrote: > >>>> > >>>> Why would G0 to a given location in one axis (X) differ such that a G1 > >>>> movement in another axis (Z) causes the first axis to move? Let me > >>>> explain... > >>>> > >>>> Attached is a screenshot of the back plot from Axis: > >>>> http://bgp.nu/~tom/pub/G0G1.png > >>>> > >>>> The highlighted line is "G0 X#<CurrentDiameter>" > >>>> > >>>> However, if you look at the back plot that IS NOT the CurrentDiameter > >>> value > >>>> where it landed. It MIGHT be "CurrentDiameter - Cutter Compensation”. > >>>> > >>>> But then 2 lines down I move "G1 Z#<Z-Start>" and the line rises up > to > >>>> CurrentDiameter. That is, the move “G1 Z#<Z-Start>” is also > causing a > >>>> move in X to CurrentDiameter (when it should already be there - but > >>> isn’t). > >>>> Why is this? Why is the G0 move different from the G1 move? Or > phrased > >>>> another way, why is that first line at an angle rather than > horizontal? > >>>> > >>>> According to the G-Code reference it appears both G1 and G0 are both > >>>> affected by cutter compensation so they should be the same shouldn’t > >>> they? > >>>> > >>>> -Tom > >>>> > >>>> > >>>> ------------------------------------------------------------ > >>>> ------------------ > >>>> Check out the vibrant tech community on one of the world's most > >>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>>> _______________________________________________ > >>>> Emc-users mailing list > >>>> [email protected] > >>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>> ------------------------------------------------------------ > >>> ------------------ > >>>> Check out the vibrant tech community on one of the world's most > >>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>>> _______________________________________________ > >>>> Emc-users mailing list > >>>> [email protected] > >>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>> > >>> > >>> ------------------------------------------------------------ > >>> ------------------ > >>> Check out the vibrant tech community on one of the world's most > >>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>> > >> ------------------------------------------------------------ > > ------------------ > >> Check out the vibrant tech community on one of the world's most > >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > ------------------------------------------------------------ > > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------ > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
