"Gobble Gobble " Machine stops in motion

[chipsahoy]

hi guys

1985 4020 old control ..

I fired up the machine today and ran a few parts and eveything seemed fine.. After about 20 minutes I went to run another part from the same proven program and it shut down.. What I mean is it started out moving in X and Y and then as it moved in Z, it shut down the spindle and then coasted to a stop.. I turned off the machine joged to my marks and then cold started. Machine started to go to the home postion and then it shook and stopped.. I did notice that the spindle was doing one of those dances where it seems like the spindle encoder might be going out.. What do you think??

Chips

[Neal]

Chips--
Did you get any error messages? The encoder could be the problem but there may be something else going on.

Neal

[chipsahoy]

Neal

No error messages!!

I have been runnung the machine off and on and all sems ok.. What I did encounter was the spindle orient being abit lazy.. Was showing signs of shaking or jerking in order to find its orient position.. Also keep in mind that my shop is a bit golsd and I dont rin the machine everyday..

Chips!!