First of all. Way cool video. Thanks for that link. Didn't even speed through it.
A pull stud on R8 tools. Interesting concept. Not sure there's room inside the spindle for that. John > -----Original Message----- > From: Matthew Herd [mailto:herd.m...@gmail.com] > Sent: November-22-21 4:15 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Spindle positioning. > > What about a custom draw bar with an Andy Pugh style air cylinder release? > Seems simpler to engineer the mechanism than do all > this control. Just have a drawbar that�s normally retracted with a flange. > Engage the flange with a mechanism on an air cylinder to > release. > > https://m.youtube.com/watch?v=mZWQvq-X7DQ > > I think you could probably adapt the idea without the need to make your own > air cylinder, but the idea is sound. No need to invent > pull studs or pull stud fingers either. Just thread the other end of the draw > bar into the collet. Preferably with some Loctite or a > similar solution. > > Matt > > > > > On Nov 22, 2021, at 7:06 AM, Roland Jollivet <roland.jolli...@gmail.com> > > wrote: > > > > ?You probably don't need more than 1 bar on the lifting air cylinder, up or > > down. No need to force it down. > > So let it down, then if you can give the spindle a 1RPM burst to let the > > nut slip over. > > And have a switch on driver Z to know if it's down over the nut. > > > > You could also stop the spindle and descend the driver as the spindle > > reaches it's last 5RPM? before stopping. > > > > Roland > > > > _______________________________________________ > 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
