I ordered a sampling of the sensors from Chinese vendors on eBay. (At $1.90 each, ordering a handful don't break the bank) I measured the treads and 1mm pitch seems to be the standard. I looked and found it is a metric standard but not very common. I found a very low M12x1 cost plug tap.
I can print 1mm pitch threads but they don't come out very clean or sharp. The tap cleans them up really well. Actually it makes doing mental math easy. I measure the taget to senior distance and if I want to move it say 0.25mm it is pretty easy to figure out I need to rotate the sensor 90 degrees. I think this thread size os used for those very thin rings used for electrical jacks and toggle switches. The ring nuts are only 2mm thick so they need an ultra fine pitch. With the sensor in a threaded holder I can screw it in until it makes contact with the target then back it off until the signal goes low then screw it back until it goes high. It is self measuring at 1mm per turn. On Thu, Feb 15, 2018 at 8:11 PM, Gene Heskett <ghesk...@shentel.net> wrote: > On Thursday 15 February 2018 22:23:34 Chris Albertson wrote: > > > I'm slowing getting set up to test one of those sensors. I just 3d > > printed a holder. The darn thing uses M12x1 threads so I had to > > order a 12x1 tap 6 weeks from China and the tap arrived. > > 12mmx1mm?. Thats pretty fine, way finer than a 1/2 SAE. And close to > being made of un-obtainium I'd expect. > > Printing > > 12x1 almost works but you need to chase out the printed threads. > > > > None of the local stores carry anything that is M12x1. Soon enough > > I will know if it can "see" things like hex bolt heads and aluminum > > foil. > > > > On Tue, Feb 13, 2018 at 5:04 PM, jeremy youngs <jcyoung...@gmail.com> > wrote: > > > I had to service this motor today, as a previous technician had > > > improperly installed the brushes and it would are off at speed. In > > > doing so I removed the tach cover and found plenty of room for an > > > omron encoder. So I will not likely try these for spindle encoder. > > > But will be putting them in as home switches soon. > > > > > > Gene, you are absolutely right about the optos, the strongest and > > > best these have performed today after I replaced the bob to a > > > straight through board. However, I discovered my y axis ballscrews > > > is bent. It's been in there 4 years now and was kinda jury rigged > > > anyhow. So I guess it's time to jump that hurdle, may as well put > > > one in x as well. > > > Now where's that box with pulleys and belt in it from China that has > > > been setting in Chicago for 2.5 weeks....... > > > ------------------------------------------------------------ > > > ------------------ > > > 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 > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ 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
