On Thu, May 31, 2018, 19:39 Gene Heskett <ghesk...@shentel.net> wrote:
> On Thursday 31 May 2018 19:45:24 jeremy youngs wrote: > > > Encoders in hand, shaft turned and mounted, it looks good, 3 more to > > do . encoderawcount.jpg > > <https://drive.google.com/file/d/1oHklBMnxpmTGl-ZzVBCtBkDbsFxwydN_/vie > >w?usp=drivesdk> > > That does look pretty good at first glance. I can't read the clocking > rate though. Humm, I just found the viewer has a zoom. So I assume you > were turning it by hand as the timing shows 2/1 variations on a 10 > Back emf , as measured in lathe at 800 rpm was 21.6 volts. It's a 20 volt motor , I intend on driving at 28 volts with generic hbridge. I'm not sure that 28 will give the 300 ipm rapid I'm after, but time will tell. I was powering this with a 700 ma 5 volt supply so motor speed was pretty slow, I did not put my tach on it , encoders are set to 1000 PPR as that's what I already have the 7i 90 programmed to. 20/56 is the timing pulley ratio so that will be over 2k per rev. I hope to ballscrew the x in the next month or so , y and z are already ballscrew although I think I am going to replace the y screw ( again) as it's a surplus screw and I don't like it's mount and have been fairly impressed with the Chinese screw I put in z. millisecond per grid line, so thats pretty slow. What it looks like at 3 > to 5k revs will tell the story. I'm pretty sure 2k will be the absolute max with my setup. But you are not going to get that > display at 3 to 5k in halscope. That will need a good scope, > > On the list, but concrete and shop expansion are essential at this time . > I wrench to support my Machine habit 😂😂😂 > > > ---------------------------------------------------------------------- > >-------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
