Don't do it. It's not safe. The sideways forces created by milling plus the downward pull from spiral bits can pull it out and fling it across the room. I built an entire Gingery Lathe using My Sears Drill press since I could clamp the quill. (it was a robust Delta Design). And I had a friend with a lathe and a long drill put in a hole through the center of the spindle so I could attach a drawbar to the MT-3 tooling. John Dammeyer
> -----Original Message----- > From: rayj [mailto:raymo...@frontiernet.net] > Sent: October-29-15 5:10 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] tool changers > > > Thanks for the reply. > > That's what I was thinking, but some MT3 adapters are just rammed in > place or tapped lightly with a hammer and function adequately. I was > wondering if the vacuum was applied and the adapter was brought into > place so that the vacuum "snapped" it into position if that would be > enough force to seat is securely. > > Like I said, just wondering out loud. > > Raymond Julian > Kettle River, MN > > The things we admire in men, kindness and generosity, openness, honesty, > understanding and feeling are the concomitants of failure in our system. > And those traits we detest, sharpness, greed, acquisitiveness, meanness, > egotism and self-interest are the traits of success. And while men > admire the quality of the first they love the produce of the second. > -John Steinbeck, novelist, Nobel laureate (1902-1968) > > On 10/29/2015 06:27 PM, andy pugh wrote: > > On 29 October 2015 at 23:20, rayj <raymo...@frontiernet.net> wrote: > >> I was wondering if anyone had used > >> vacuum to snap the holder into place, and if it is likely to be tight > >> enough for a little light milling. > > > > 14.5 psi on an area of 0.88 square inches. > > 12.75 lbf. I don't think that would be enough. Typical drawbar pulls > > are about 100x higher. > > > > > > ---------------------------------------------------------------------------- -- > _______________________________________________ > 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
