Hello! So we built an LMS X2 conversion a while back. Pretty proud of it, as we've done everything from scraping the ways to reinforcing the column. We use a CNC Fusion kit with three 425oz in steppers from Automation Technologies. We used one of their kits that comes with KL4030 drivers. We've had this thing going on two years and have become quite familiar with it. The issue we're having now is that the x-axis motor is no longer able to push the table. I tore the x-axis down and rebuilt it, making sure the gibs are properly adjusted and that the ball screw is aligned from each end and the ball nut.
I used the machine one night, quite heavily, with absolutely no issues. After making several parts, I shut everything down. When I returned the next morning, I fired everything up, but for some reason the x-axis refused to move, making that god awful "WHEEEEEEEEERRR" noise. Absolutely nothing was done to the machine after I shut it all off the previous night. I realigned everything, but no joy. None of the other axis are having problems. Here's what I noticed:
1) I am able to pretty easily turn the motor by grasping the shaft coupling (not coupled with the ball screw, mind you, just holding the motor in my hand) and turning it. If memory serves, this used to be much much harder.
2) If I disconnect the motor from the ballscrew and hold it in my hand, it will make the awful noise just from me lightly jostling it while running the motor.
I need to compare this to the other motors, see if they have comparable features. If it turns out that the other motors seem to not have these same features, my question to you is would this be an issue with the motor or the driver? I think I can rule out resistence in the table, as even if I loosen everything up it seems to struggle. Thoughts?