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Author Topic: CNC fire hazzard.  (Read 3359 times)

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Online Tweakie.CNC

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CNC fire hazzard.
« on: July 06, 2009, 09:15:21 AM »
Just look and see what happened when this Z axis failed and plunged the plastic bodied spindle into the work and stalled the spindle.
Perhaps the lesson is to make sure the correctly rated fuse or circuit trip is always used for the spindle when machines are left operating unattended.

http://www.flickr.com/photos/29506322@N08/sets/72157620853267251/

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Dan13

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Re: CNC fire hazzard.
« Reply #1 on: July 06, 2009, 09:59:51 AM »
Hi Tweakie,

It's said looking at these pictures... :( Your machine has been seriously damaged and the spindle is scrapped :( :(

Was it a Mach fault?

Hope you get it fixed soon...

Daniel

Online Tweakie.CNC

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Re: CNC fire hazzard.
« Reply #2 on: July 07, 2009, 01:38:41 AM »
Hi Daniel,

It wasn't my machine, fortunately.
It appears that it was a mechanical fault when the leadscrew nut broke free from it's mounting and allowed the Z axis to drop.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: CNC fire hazzard.
« Reply #3 on: August 29, 2009, 02:17:54 PM »
Oh, misery :(

I've got my bases covered, my mill came with an overload cutout on the spindle contactor. Triggering this estops the whole thing and it slams to a stop with no power to spindle or drives. Shame this one didn't have such an arrangement.

Offline Chaoticone

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Re: CNC fire hazzard.
« Reply #4 on: August 29, 2009, 02:28:01 PM »
 :(

Brett
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