> -----Original Message-----
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: Sunday, August 05, 2018 11:06 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Cutter compensation with mill turning
>
> On Sunday 05 August 2018 22:39:18 Ken Strauss wrote:
>
> > > -----Original Message-----
> > > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > > Sent: Sunday, August 05, 2018 10:27 PM
> > > To: emc-users@lists.sourceforge.net
> > > Subject: Re: [Emc-users] Cutter compensation with mill turning
> Particularly if you raise the motor power, the TTS may slip in its holder
> as it has no provision to keylock it to the spindle. It seriously needs
> a keying slot cut into the side, and a locking pin to engage that slot
> in the spindle. When I went of a spree and cut up 12 feet of 7/8" brass
> for tap holders, I skipped the TTS and cut a semi-circle to fit the head
> of a 4mm socket head cap screw into the edge of a 7/8" r8 so the tap is
> keyed into the r8, which is keyed into my spindle. zero tap slippage
> now. An er20 takes 18" wrenches tightened seriously to get a good enough
> grip on a 4mm.7 tap. With my psu and a Pico pwm-servo amp, I'm getting
> close to 2hp out of the factory G0704 motor. Its almost enough to turn
> a 12mm tap in steel. And will get the job done if I "peck" it. How
> long those plastic backgears would last doing that is Yet To Be
> Determined. :)
> >
Yes, TTS will pullout particularly with heavy cutting coupled with chatter.
Tormach has recognized the problem and offers a NMTB30 spindle on their
recently announced PCNC1100MX.
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
