Tejano,
Your link doesn't say much about what happened.
Niether does yours, really. "setting up a shaft to rough" doesn't mean much.
I, frankly, can't see a way in which a cutting tool CAN fly at the speed of a bullet, Crescent wrench size (4" or 24" Crescent?), by "setting up to rough".
Spinning something at 3000 RPM and having a tool break could throw a broken tool at you at high speed, if it is an intermittent cut, and some part of the piece can bat it at you. Had that happen numerous times.
TECO took over the Westinghouse at Round Rock? No shit.
What WERE those HUGE lathes? The only one I recall sending to Round Rock was the 180" DC rotor lathe, and that was only about 15 foot between centers. That's 15 foot swing, 15 foot between centers.
All our other large lathes, 60, 70 or 72, 80, 90, 100, 120 inch swing, were from 40 to I think 100 foot between centers. Not conducive to DC rotors. They are short and fat. AC are less fat and very long.
DC, which Round Rock was set up to do, to ship work from that evil UNIONIZED E. Pgh Works, never, from what I have heard, made an operating DC gen OR motor, up to the shutdown of the Westinghouse, but then, neither did any other of the Divisions they split us up into, nor ANY operating Rotating Apparatus.
In 23 years I never heard of a death by machine in a work force of over 13,000. Only one that is even close is a tester on retaining rings of explosive formed forged steel, 4" thick, 4 foot high, 5 foot diameter, that was under 10,000 PSI hydro test. When the Op bent down to flip the switch to 20,000 PSI, a seal let loose and 10,000+ PSI oil burst the seal right where his shoulder was, and shot oil through his torso to emerge at his rectum. Took 3 days to die, heroic efforts, but foregone conclusion.
Never heard of any rotating machine op getting drawn into the machine and being beat to death, as some of you are projecting. I was there when the beats were wearing long hair. A few of them getting parts of their scalps torn off for long hair on DPs and the like. I think the first or second and the beats had to either get a haircut or wear a snood.
A little sense helps you to NOT get hurt on any machine. A little inattention can get you hurt, a litltle stupidity can DEFINITELY get you hurt.
The bigger the machine, the more cautious you are. Simply the size makes you think that that thing is big enough to hurt you even if you don't put a tool to it.
Everything is bigger, period. 10 to 16 foot VBM I used 1 1/2 shank tools. 1/2 plus DOC, 1/16 plus feed.
I think a lot of people are more scared of the machines than they used to be, and mebbe it's because more people are just scared of everything.We have airbags, one, we have sidecurtain airbags, we have doorpanel airbags, we have, at least in Mercedes, headrest airbags.
We go to an SB9 and "Where are the protective devices?" You want to machine in a bubble, which is about the way that production machining IS done. Program the machining center, start the stock, slide the guard/splash shield over the tool and parts coming off, take out a bushel of parts, put in a new bar of feedstock.
Necessary, I guess, to be competitive, but just how many BAD parts do you make because you had a chipped insert?
This is probably going so far OT to this OT post that I am leaving it at this point.
Cheers,
George