Re: 316 stainless
- From: "Gary H. Lucas" <gary.lucas@xxxxxxxxxxx>
- Date: Sun, 11 Sep 2005 02:08:58 GMT
<tlipton2@xxxxxxxxxxx> wrote in message
> Excellent analysis KG.
> So many times as machinists we slow things down when we have a problem
> when sometimes speeding things up is what is needed.
> I'm no expert I have learned most of what I know by screwing up. The
> only thing I claim is that I paid attention when I did screw up.
> With that said it might make more sense to abandon the M geometry which
> is a medium general purpose chip breaking style and go to a more
> roughing grade or even a wiper roughing geometry.
> Tom Lipton
I had a machinist 'prove' to me that we couldn't go any faster, by gently
turning up the feed rate, and getting lots of chatter. A week later I
accidentally ran the same program and three times the spindle speed and four
times the feed rate. Oh Shit! Hey, wait a minute, where did all that metal
go? Four times faster by mistake. The tool lasted twice as long too. That
was aluminum, but I had a very similar thing happen on cold rolled steel. I
broke 4 end mills in quick succession, then finished the job on the last end
mill in a quarter the time I was told the job would take.
Gary H. Lucas
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