Consider: https://hsmadvisor.com/
> -----Original Message----- > From: Gene Heskett [mailto:ghesk...@shentel.net] > Sent: Sunday, April 21, 2019 4:09 AM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] milling tool life, or lack thereof. > > On Sunday 21 April 2019 03:40:08 andy pugh wrote: > > > On Sun, 21 Apr 2019 at 03:34, John Dammeyer <jo...@autoartisans.com> > wrote: > > > I used the Machinist toolbox to figure out what sort of speed and > > > feed I needed but ended up running the mill faster (thought I'd read > > > it should be 3000 but it was supposed to be 2000). Typo error. OK. > > > So tool bit 0.09375. Two flutes. HSS. Chip load 0.00551. Aluminium > > > bar. SFM set at 40 which called for 2000 RPM and about 22 ipm > > > > That sounds slow at the spindle, I have been running at 8500 rpm and a > > 2.5mm cutter in tool steel. > > > > FSWizard on my phone is suggesting 589 fpm (180 m/min) surface speed, > > 24,000 rpm and 15 in/min (388mm/min) for your <2.5mm cutter. > > (So 10x the spindle speed but lower feedrate) > > > > I suspect that Gene has the opposite problem, I am suspecting his feed > > rate was too low if the swarf comes off as dust. (but he didn't > > specify feed rate) > > It was in retrospect too slow for the revs once I had some mist flowing, > 5 ipm to a max of 10 I think. Where can I get a copy of this machinist > toolbox. Sounds handy. The handbook covers this too, but in hard to > find format since theres around 2k pages of it. > > 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
