Steve Blackmore wrote: > On Mon, 13 Apr 2009 21:48:40 -0500, you wrote: > > > >> I just ran several pieces at 12 TPI, using a program derived from the >> EMC sample program threading.ngc >> > > Have you tried with plain Gcode? That is a horribly complex piece of > code and it's possible the error may be associated with the math > involved. > > But, It woks FINE for me! I have not yet gotten a copy of Mr. Harris' code, so have no idea how he has programmed his threading, where he IS havig this problem. > I think the math is trying to do constant volume cuts, but I certainly > wouldn't do that on the fly. It would be easier to see where the error > lies if the code was a series of lines, at least you can then narrow it > to a particular move, or not, as the case might be. > > > >> So, >> does anyone else have experience with lathe threading or rigid tapping >> at 12 or less TPI? I don't see why that should matter to the encoder >> counter reset on index function, but that is what Mr. Harris reports. >> > > I've run many 1.5 and 2mm pitch threads in testing over the last few > days without any problems. My encoder count is much less though at 90 > ppr and spindle speeds tried have been 500 to 1000 rpm. > What version of EMC are you using?
Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
