On Monday 15 June 2015 09:45:22 Chris Kelley wrote: > Well, we had to make a little circuit board to convert the Fanuc > spindle analog pulse generator signals to digital quadrature pulses > and I mounted an optical sensor to read a flag on the spindle to make > an index pulse. > > Anyway, the machine now rigid taps. > > Very first chips made since the conversion began were testing rigid > tapping in 1/4" polycarbonate with a 1/4"-20 tap: > https://youtu.be/dvdWepZ5o8Q
Sweet. Darned near porno! The turn-around is quicker than I can do on the lathe of course as I have 20+lbs of metal in the 5" 4 jaw chuck to reverse. But I am thinking on ways to speed that up, from 300 rpm the overtravel is about 2.25 turns right now, and I think I can halve that with some more hal trickery at the expense of exploring the surge voltage rating of the motor psu when it dumps back into the psu while slowing using regenerative braking more effectively than the current method. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
