On Monday 22 November 2021 16:35:37 John Dammeyer wrote: > Hi Mathew, > I want to be able to swap easily and quickly between R8 and TTS. > Here's a selection of some of the tooling. > > http://www.autoartisans.com/mill/ToolSelection.jpg > I've quite a bit more than that John but not the variety. I do any slotting I need with EDM. Just as precise, slower too, but no smearing of the slot edges.
> There's a full set of R8 collets of course. The spring loaded Tap > Holder has a 3/4" shank so it really just needs a TTS collar to make > it full TTS. The two gear cutter arbors for the different sized > cutters. Face mill. Changing from a 1/4" drill bit means I have to > swap out the TTS to install the R8 based expensive 16mm JT3 ball > bearing chuck. > > To change completely over to TTS is expensive. And gets you slippery tool holding because its pure friction. > To change to a mill > with a NMBT or CAT cone type is really expensive. The lowest cost > power toolbar system was the butterfly wrench and air cylinder. Cost > escalated as the ordered electric pneumatic valves just never showed > up from China so I went local. Not really expensive but it adds up as > do all the fittings. > > At this point I could see spending as much as $150 Cdn. for the > planetary gear and stepper combination. Still way less expensive > than fully switching over to TTS which I probably will over time but > not all in one shot. And I'm not sure the TTS wouldn't slip with the > 5/8" chuck holding a 1" reduced shank drill bit. I'm sure it will if the mill has the cajones to turn a 1" bit at the recommended speed and feed per rev. The fix is a notch in the edge of an r8, fits the head of a 4mm cap screw installed in the chuck adapter shank. That leaves the next weak point the pin that engages the slot in the side of the r8 to keep the r8 from slipping in the spindle. IMO thats too small to turn a 1" bit with. It will shear. The question is when, not if. > > First step now is to wait for the 12 point deep socket. > > John [...] Take care John. 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, 1940) 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
