Good point regarding the need for an index. Are there cheap encoders capable of higher RPM?
> -----Original Message----- > From: Gene Heskett [mailto:[email protected]] > Sent: Friday, June 19, 2020 5:00 PM > To: [email protected] > Subject: Re: [Emc-users] Universal spindle speed control for $7 > > On Friday 19 June 2020 14:49:54 Ken Strauss wrote: > > > I would like to add rigid tapping. Those are some inexpensive encoders > > except the top rated speed is 5000 rpm and I have a 10000 rpm spindle. > > Any suggestions regarding suitable pulleys to reduce the speed > > (perhaps 5:1)? Will normal GT2 belts survive? > > Until it doesn't, long time down the log. You'll need to rig a once per > turn index though as you bee way out of time. At 10g revs, you'll need > an index every turn, which you won't get if its geared down. However, an > even number gear down might work. But it for sure won't if the geardown > is fractional. So use a 1000 line encoder, gear it down 4 to one and > use a scale of 250. And that should work. > > 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 > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
