On Sunday 06 October 2019 16:07:16 Stuart Stevenson wrote: > You don't need a boring head. An end mill adapter/holder will work > just fine.
I keep forgetting the circle can be drawn by a helical xy path, dropping z at the right pitch. Great idea Stuart, just haven't tried it yet. > On Sun, Oct 6, 2019, 2:22 PM Gene Heskett <ghesk...@shentel.net> wrote: > > On Sunday 06 October 2019 14:00:09 Stuart Stevenson wrote: > > > Gene, > > > I frequently use a boring bar with a threading insert to thread > > > mill threads. It is a one flute thread mill but it does a > > > wonderful job and is not expensive. You can cut OD and ID threads. > > > Works a treat. > > > If your mill doesn't have a spiral code then maybe your CAM > > > package can output the motion in plain gcode. > > > thanks > > > Stuart > > > > What CAM, any gcode written is written by me. And everything is > > running 2.9?? these days, so I've got all that anyway. Except the > > boring head to carry the threading bar. Gotta get me one of them > > puppies. ;-) > > > > > On Sat, Oct 5, 2019 at 3:20 PM Gene Heskett <ghesk...@shentel.net> > > > > wrote: > > > > On Saturday 05 October 2019 12:56:25 John Dammeyer wrote: > > > > > If you are controlling the speed of your spindle with LinuxCNC > > > > > instead of just ON/OFF/DIR, how are you doing this? > > > > > > > > > > Step/Dir? > > > > > > > > > > 0V-10V PWM? > > > > > > > > Check, delivered to the spindle circuitry of a mesa-7i76D, > > > > thence to an ebay vfd on my 6040, > > > > And thru another ebay vfd is driven by a pwmgen in the 7i90, > > > > feeding a spinx1 on the sheldon lathe, from an rpi-3b. The lathe > > > > has an encoder, the 6040 does not. The only chance of ever doing > > > > any thread cutting would be in very soft material using a > > > > threading mill on the 6040, and G2-3 using Z feed might be used. > > > > Since its spindle tops at 24k revs, its xy circles at z feed > > > > for any potential threading. Threading mills need little red > > > > wagon loads of cash though. > > > > > > > > > ModBus? > > > > > If ModBus RS232 or RS485? > > > > > > > > > > Some other way? > > > > > > > > > > Thanks > > > > > John > > > > > > > > > > > > > > > "ELS! Nothing else works as well for your Lathe" > > > > > Automation Artisans Inc. > > > > > www dot autoartisans dot com > > > > > > > > > > > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > Emc-users@lists.sourceforge.net > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > Cheers, Gene Heskett > > > > -- > > > > "There are four boxes to be used in defense of liberty: > > > > soap, ballot, jury, and ammo. Please use in that order." > > > > -Ed Howdershelt (Author) > > > > If we desire respect for the law, we must first make the law > > > > respectable. - Louis D. Brandeis > > > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > If we desire respect for the law, we must first make the law > > respectable. - Louis D. Brandeis > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
