X and Y axis intermittent jamming
Hi,
We have a CNC 3020, on which the X and Y axis intermittently jam or stutter. The machine has had perhaps 40 hrs operation since new. The fault does not occur at the same spots in travel each time.
I looked for posts on this and found several reporting a lack of lubricant in the linear bearings and ballscrews, so disassembled them. That was indeed the case as no lubricant at all was visible. I used a Nulon PTFE light grease to supply this and reassembled.
The problem was improved but still there. One thing I noticed was
that when jamming the axis screw could be turned by hand using the large knob on top of the axis motor, unlike the normal powered up condition when it is locked. This however would not clear the jam.
At that I began to wonder if the fault is electronic in nature, not mechanical. Has anyone struck this with a 3020?
Thanks
Geoff