That is very odd. Never seen that and the code base hasn't been touched for a while.. Can you post your hal config?
sam On Wed, Feb 9, 2022 at 9:04 AM Leonardo Marsaglia <ldmarsag...@gmail.com> wrote: > NOTE: I retire that thing about the problem not happening for larger > pitches. It happens with any pitch I try. Only the first revolution works > well. > > El mié, 9 feb 2022 a las 11:56, Leonardo Marsaglia (<ldmarsag...@gmail.com > >) > escribió: > > > Hello guys, > > > > First of all I hope you're doing well and sorry for not being that active > > here. Lots of things to do but thankfully everything goes pretty well. > > > > Today I first tried to use the Mazak lathe we converted to LCNC to do > some > > single point threading and I find I have a really strange behaviour. > > > > So here goes the problem: > > > > Let's say I program a 5 mm pitch thread or a 5 mm increment synchronized > > move. No problem, the tool positions itself in the right starting point > and > > waits for the index to trigger. When that happens, the Z axis moves the 5 > > mm per revolution but only for the first revolution of the spindle (I > > checked this turning the spindle by hand). After that the motion gets > > ridiculously slow as if the scale of the encoder no longer is the same. I > > noticed that this doesn't not happen for larger pitches. > > > > I double checked my spindle.0.revs and went up to 1 for a full revolution > > and then resets to 0 to start over again. (positive values for clockwise > > rotation). > > > > I'm using Linuxcnc 2.8.0 pre1-5538-g21d7db0 on that particular machine. > > Didn't bother to upgrade because it worked perfectly for everything else. > > Could this be a bug in that particular pre release? > > > > Thanks as always. > > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
