richard harris wrote: > > I am currently running emc 2.2.6 I > have been threading a right hand M10x1.25 thread all day > approximately 90 parts. I switched to cutting a left hand M10x1.25 > and everything was fine for the first 20 parts then suddenly on the > spring back pass it will rapid one of the cuts. I looked at the > wires on the spindle encoder to see if anything got loose and all > looked fine. Ran the same code again with no problems, thought it > was a fluke and continued to run parts. Four parts later it did the > same rapid still on a spring pass but the last one not the first. > Ran the program ten times in the air and 4 times it ran perfectly 6 > times it rapided in a spring pass, always a spring pass. I switched > back to right hand cuts and it ran without issue. >
Are you cutting the left hand thread by reversing the spindle rotation, or by cutting from left to right? I seem to remember cradek found a problem with threading when the spindle is running backwards, but I don't recall the details. There is also an open bug report http://sourceforge.net/tracker/index.php?func=detail&aid=2136805&group_id=6744&atid=106744 But the bug report says that threading moves with the spindle in reverse don't move at all, which isn't consistent with your symptoms. Regards, John Kasunich ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
