Re: [CAD_CAM_EDM_DRO] PC Control of Motion

I agree, It seems the best thing to do in an emergency would be to lift the
Z-Axis by a couple of mm's then kill the spindle. I can't think of an emerg.
which would be made worse by lifting the spindle.

Art

----- Original Message -----
From: <ballendo@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Friday, September 01, 2000 2:15 AM
Subject: [CAD_CAM_EDM_DRO] PC Control of Motion


>
> Stan wrote,
>
> >3.5) Panic stop also kills current to stepper motors (hardwired).
>
> Stan,
>
> Keep in mind that killing the power to the motors (stepper or servo,
> unless braked) will allow a presently cutting tool to climb,claw and
> grab into whatever it can reach as the spindle(definitely hard-wired
> to the estop) is winding down. Rack and pinion drive and Ballscrews
> allow this to happen the most, followed by high lead leadscrews. Be
> careful and THINK about what will happen when things are going badly,
> You may not want to kill those motors until the spindle has stopped!
>
> Ballendo
>
>
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