On Friday, June 08, 2012 08:58:16 AM Eric Keller did opine: > On Thu, Jun 7, 2012 at 9:39 AM, gene heskett <[email protected]> wrote: > > I did notice yesterday while cutting that 4mmx0.7 thread, which btw > > came out real nice, that the spindle speed you start at should not be > > changed during the run as it will widen the cut thread, leaving a > > distorted profile at the root of the thread. > > I think you are asking too much of the controller. When you are going > after precision, there is some sacrifice to be made in speed. This is > especially true when the machine is less than perfect. You could > potentially tune the controller a little better. > Eric
G76 is a canned cycle. It can be made to work the way I've described, probably in less than 10 minutes time if I had the source, which I haven't had since 2.2 days. I did build it once just to see if I could do it, most of a decade back up the log. As it is, the only way I can fix it is to un-tune the controller by removing the backlash comp & letting that slack be taken up in the air, or by writing it all as a loop that does do what needs to be done using G33. But that only fixes my problem, why not fix it once, for everybody? Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> Misfortunes arrive on wings and leave on foot. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
