On Thu, 20 Nov 2008 17:05:30 -0500, Wes wrote:

Dave B wrote:

One our customers recently had an operator that left the chuck key in
the chuck and started the spindle.

They asked us to provide a solution and here is what it looks like.
We have installed 20 of them in the last few weeks.

Will not allow the spindle to start without the key in place and if
removed of course the spindle stops.

http://s32.photobucket.com/albums/d1...chuck_safe.jpg


Dave B

So are you using an inductive prox? If so, what if a chip gets in there?

Hell of a lot nicer than those spring loaded chuck keys. Yuck.

Wes

The bottom has slots in it to help with chips,doubt if they will.

They machine a lot of plastics and composites so wasn't much of a
concern.

They used spring loaded ones but the guys were complaining about them.

Dave B