Andy If I was only running TTS or something with a pull stud like yours that would be a no brainer.
However I want the ability to use both TTS (no more than two turns either direction) and R8 (engaged thread number of turns to release and capture). The idea of tap on the button to force two turns and press and hold for continuous would work if I could get the socket to line up and the motor to not over speed to thousands of RPM. I'll take a longer look at guiding the socket but in the end not all R8 tooling starts the thread at the same point. So the draw bar engages at a different angle into each R8 collet so even if the spindle were at the index position where the nut ends up when tight will be different. Now if I had a slotted disk or reflective mark on the nut I could turn the spindle until that was detected and stop there. Now we know where the flat is. A tab on the socket that stops the socket turning in the up position would then allow a short blip on the air wrench to locate the socket close enough so when it then goes down is guided over the drawbar bolt head. Hence my other question about turning the spindle with the MESA 7i92H step/dir module in position mode or catching an index position. John > -----Original Message----- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: November-22-21 5:26 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Closed loop control of air motors. > > On Mon, 22 Nov 2021 at 05:23, John Dammeyer <jo...@autoartisans.com> wrote: > > > As it is the nut is getting pretty trashed so until the 12 point socket > > arrives I think this part of the project is on hold. > > Is it time to cut your losses and go with a Bellville washer stack? > It works for Tormach: https://tormach.com/power-drawbar-pcnc-1100-31706.html > (and, for that matter, for me: https://youtu.be/mZWQvq-X7DQ ) > > -- > 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
