> > Lathe mode! > > https://www.youtube.com/watch?v=P0RP7s-rDsg
I really envy you. It seems you're having lots of fun with that mill! El vie., 10 abr. 2020 a las 13:05, Sam Sokolik (<[email protected]>) escribió: > Lathe mode! > > https://www.youtube.com/watch?v=P0RP7s-rDsg > > sam > > On Fri, Apr 3, 2020 at 4:21 PM Sam Sokolik <[email protected]> wrote: > > > Andy - I was wonder if that was possible. I would have to look what > comes > > back from the stmbl drive... > > Or I could just get a better spindle encoder... :) > > > > Try to broach this!! ;) > > > > > > > > On Tue, Mar 31, 2020 at 3:29 AM andy pugh <[email protected]> wrote: > > > >> On Tue, 31 Mar 2020 at 05:14, Sam Sokolik <[email protected]> wrote: > >> > >> > The encoder on the motor that goes back to the stmbl is pretty high > >> count - > >> > like 20k/rev. But only a small ribbed belt between the motor and the > >> > spindle. (why I put the gear tooth encoder there) > >> > >> So, what you would need would be a PLL to keep the motor encoder > >> counts in synch with the low-count encoder. > >> There probably is actually a way to do this. Maybe a PID to add a > >> phase difference to the motor encoder using the spindle encoder as a > >> feedback. > >> > >> For normal rigid tapping the evidence seems to be that you can get > >> away with a ribbed belt (20 or 30 turns, typically) but this > >> application is probably as critical as it gets with many more turns > >> than usual. > >> > >> -- > >> atp > >> "A motorcycle is a bicycle with a pandemonium attachment and is > >> designed for the especial use of mechanical geniuses, daredevils and > >> lunatics." > >> — George Fitch, Atlanta Constitution Newspaper, 1912 > >> > >> > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
