Originally Posted by
John Crawford
Since this came to the top I thought I'd share a problem that occurred a few weeks ago on my TM-1 (December 2007 model with maybe 600 hours spindle time on it). I was using the mill in manual mode to face the top of a work piece. As I was turning the jog handle to move the table in the X direction the table suddenly stopped moving and the control panel went dead. The spindle was still spinning and the display was working, but none of the buttons on the control panel worked. I tried hitting all the buttons including Reset and Power Up/Restart and they had no effect. I finally hit the Power Off button and the machine shut off and the spindle slowly spun down. The spindle didn't lower after the machine was shut down, which was a good thing.
I restarted the mill and played around with it a bit and everything seemed to be okay. I returned to manually facing the work piece and when moving the table in the X direction the same thing happened again close to the X location where it happened the first time. I tried the buttons on the control panel and none of them responded so I hit the Power Off button again. The machine shut down and the spindle slowly came to a stop.
Since both incidents occurred at about the same X location while I was moving the table in the X direction I thought the problem might be related to that. I looked under the table to see if there was a position sensor somewhere but didn't see one. For lack of anything else to do I used an air nozzle to blow are all around the underside of the table. I poked it in all the nooks and crannies and didn't spare any air. I also took the back of the control pendant off and checked all the electrical connectors to see if any where loose. They were all okay. I jiggled all of them and put the back cover on.
I decided to think about it a bit more that evening and the next day I restarted the mill and everything worked okay. I've run the mill maybe 10-20 hours since then and the problem hasn't returned.
Any thoughts as to what might have happened? Did I do something that fixed the problem or was it just a coincidence? Has anyone else experienced this problem, and if so was a cause identified?
On a Mini Mill I ran I had that issue. It turned out to be a bad low voltage power supply. It was replaced and that was all it needed.
Mike
Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28