Just cheat a bit. If you are belt driven then put a small idler/tensioner pulley arranged to be driven by the main belt. On the Mazak the servo motors had resolvers built in: with a 1:7 gear to increase the resolution .
> On Jan 4, 2024, at 7:14 AM, Sam Sokolik <samco...@gmail.com> wrote: > > We had gotten some 5000 line - 20000 count encoders on ebay a while back. > It certainly helped.. Higher would be nicer.,.(for bigger diameter testing) > > sam > > On Thu, Jan 4, 2024 at 9:08 AM andy pugh <bodge...@gmail.com> wrote: > >> On Thu, 4 Jan 2024 at 13:39, gene heskett <ghesk...@shentel.net> wrote: >> >>> Humm, that may call for a higher resolution spindle encoder than I have >>> on my Sheldon, >> >> I have a resolver on the spindle of my lathe, which the Mesa 7i49 >> converts into a 14-bit number, so should have enough resolution. >> (linearity of the resolver is not something that I have ever tested) >> >> But I don't quite understand why you are worrying about whether you >> can make Capto shanks on your Sheldon? >> >> -- >> 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 >> 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 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
