The end (away from the threaded end) of the R8 holder is flat rather than slightly convex. This is required to allow the flange of the TTS holder to touch the spindle nose.
> -----Original Message----- > From: Gene Heskett [mailto:ghesk...@shentel.net] > Sent: Sunday, April 21, 2019 7:45 PM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] ER ATC tool idea > > On Sunday 21 April 2019 14:51:31 Bruce Layne wrote: > > > Thank you Ken! > > > > I don't have a Tormach but I do use the Tormach Tooling System on my 2 > > HP milling machine. I typically use it for machining plastic or > > aluminum but I've taken serious cuts in steel numerous times and never > > had any problem with tool pull out. The tool stays in the TTS ER20 > > collet holder (Tormach brand or the Chinese knock offs) and the TTS > > tool holder stays in the modified 3/4" R8 collet. When I install a > > new TTS tool holder, I snug the drawbar with a 3/8" ratchet with a one > > foot long handle. I don't use the long handle for torque. I use it > > to clear the head of the milling machine. Similarly, I don't need > > much torque to loosen the modified R8 collet to remove a TTS tool > > holder, but I generally do need to tap the top of the draw bar after > > loosening the drawbar to release the TTS tool holder. > > > > I don't need to use an impact wrench to tighten and loosen the drawbar > > to prevent TTS tooling from pulling out. Something isn't right there, > > Gene. Maybe some of the grease you're using on the drawbar threads > > made its way into the 3/4" interior of the modified R8 collet? > > Possible, but whats this about a "modified R8 collet"? > > [snip] > > 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> > > > > _______________________________________________ > 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
