Re: [SherlineCNC] Story ( as promised)
- At least you had company during the repairs from then on.
On Sun, Oct 4, 2009 at 10:42 PM, chieftoolmaker <
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> Now, to give this story it's proper perspective, a little history will
> I was working for Bulova Systems and Instruments Corp.
> A division of The Bulova Watch Co.
> We were making WAD*
> * = Yes, that is right Weapons of Mass Destruction.
> It seems that somehow, I always gravitated to working in the Ordinance
> This particular incident took place in their plant in Freeport, L.I.
> We had two buildings there. One building was the machine shop and a
> satellite tool room.
> In the second building was the largest contingent of screw machines on the
> Eastern Seaboard.
> Only in Detroit, ( Motor City ) Michigan were there so many screw machines
> in one place.
> Now, it was decided to update to CNC.
> Eight machines were bought.
> These were large CNC lathes for heavy production.
> At the time, the machines cost around one eighth of a million dollars each.
> They were set up and the set up men were trained by the company that sold
> us the machines....
> After quite a while, one of the machines developed a problem in a six
> position tool holding turret.
> I was called upon to troubleshoot and fix the turret.
> It was not unusual to do this during the normal lunch period to keep
> downtime to a minimum....
> So, I was to work through my regular lunch and take a later one.
> Before he left for lunch, the set up man showed me a few basic commands so
> I could do what I had to.
> At the rear of the machine was a rather large bar feeder.
> The stock was automatically fed into the holding collet of the machine as
> need for each successive part.
> The end of the start of each bar was pointed to facilitate finding the
> collet which opened to admit the stock.
> Anyway, I tore down the turret.... It had a pretty fancy indexing
> Somehow, I touched the wrong button(s).
> In the blink of an eye, the collet opened, the bar feeder shoved this ten
> foot bar into and THROUGH the collet
> ( which did not close) and out the spindle of the lathe.
> It flew across an aisle, embedded itself through one side of a clothing
> locker and just pierced the other side.....
> Man, it was a good thing it was lunch time and no one was around......!
> I started shaking just thinking what could have happened......
> Luckily no one was hurt......No thanks to me.....
> That is it.
> Had I been versed in CNC, no problem.....
> Thanks for reading.....
> Jerry G (Glickstein)
> After that, a set up man was retained from his normal lunch period to be
> available to push the right buttons for me.... :(
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