Kirk Wallace wrote: > On Tue, 2009-04-14 at 20:57 -0500, Jon Elson wrote: > ... snip > >> problem, but I made the final fix at the 2007 EMC-Fest, and the driver >> fixes were in the July 2007 release of EMC2. So, I wanted to see if >> anyone else was seeing similar problems. Also, I don't see why the >> spindle sync would care what thread pitch he is cutting! That makes no >> sense to me at all. >> >> Jon >> > > Should I try a test on my machine? If so what would it look like? > > There is a test file, threading.ngc, in the /usr/share/emc/ncfiles directory. (There may be another version of this file that is MUCH shorter, about 15 lines. But, I have been working with the longer one in the /usr/share dir.) Anyway, in the longer one, about halfway down, is #4=0.05 (thread pitch) which sets up for 20 TPI. I ran it like that first, then changed the value to .08333 to get 12 TPI. You can also twiddle with the lead-in, lead-out scheme and the depth of cut. I left it with a very small increment (#2=) so I'd get a lot of passes, to see if anything went wrong. I had no failures here.
I'd greatly appreciate your trying it there, just to see if there is some random problem. I cannot understand how the spindle sync would work prefectly for hundreds of parts at ~20 TPI and fail on roughly 50% (I think he said that in an earlier message) at 12 TPI. The spindle sync function has no way of knowing what the thread pitch will be! Thanks, 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
