I think it's a bug (or at least an oversight), see this issue: https://github.com/LinuxCNC/linuxcnc/issues/167
I have an experimental fix: https://github.com/robEllenberg/linuxcnc-mirror/tree/feature/spindle-sync-overhaul-2.7 It caps spindle speed based on max feed for position sync moces. It seems to work in simulation, but it doesn't calculate the right maximum speed for one of Sam's configs. Mixed in with that branch are some changes to spindle tracking in the TP (not all of which are an improvement, as it turns out). Best, Rob On Fri, Jan 20, 2017, 7:50 AM John Morris <j...@zultron.com> wrote: > The manual for G33 spindle synchronized motion [1] reads, "It is an > error if [...] The requested linear motion exceeds machine velocity > limits due to the spindle speed." > > It seems that doing that actually doesn't cause an error, as > demonstrated by the regression test in the top commit here [2]. > Instead, the G33 command is happily executed with the axis velocity > limited to its `MAX_VELOCITY` from the INI file, thus cutting threads > with smaller pitch than specified in the K flag. > > Is this something that should be fixed, or am I reading the > documentation wrong? > > [1]: http://linuxcnc.org/docs/html/gcode/g-code.html#gcode:g33-tech-info > [2]: > https://github.com/zultron/machinekit/tree/spindlesync-exceeds-maxvel-lcnc > > Thanks- > > John > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
