Okay guys. I have another question. I was trying to do a practice run for a file and in the middle of it one of the Y axis motors stopped and the other kept moving. Can you tell me why that would happen?
This is a big project, but: can you disconnect the leadscrews from the steppers and rerun the same file, to make sure the steppers are both running throughout? I bet one of the two tracks is binding enough that the stepper is stalling. If you disconnect the gantry and see the stepper stop, then you have a wiring or supply problem, but if they run, you have a gantry friction problem (probably.)
Ok. I figured it could be something like that
It’s a little odd because it moves smoothly though that area forward and back when jogging and all other parts of the cut.
If you aircut, add 4cm of Z to the file, does it stop there? Maybe it’s a combination of just a little binding and cutting force. (Immediate suggestion: increase the spindle speed in that area.)
Bad connection - either electrical or signal.
@John_Bump okay
Are you running the fault signal back to the controller? If not the one driver could have faulted and the others kept going.
It’s a binding issue. I moved the cut to a different part of the table and it didn’t bind where it had on the initial trial, but it began grinding on the other motor at a different spot. I’m not sure I know how to get it fully corrected.
@John_Bump I was just running the file without cutting it. I guess you call that an aircut…makes sense. It is a binding issue, I believe as it occurs there on that axis, but when I move the zero point to further back in the table, it doesn’t stop at that part of the cut; however, it binds on the other screw at the far back. So, it seems part of the table on one side is not totally parallel to the other. Im not sure how to correct it.
What sort of rails do you have? If you are using just rods, it’s possible something else is touching and deflecting the rod, or the rod’s gotten bent?
I’m using 2010 ballscrews and linear guideways. They are the steel linear guideways, not SBK
If I turn up the amps on the drivers will it barrel through that or overheat the motors/drivers?
I know all too well about linear guide misalignment. There’s tight and too tight. It usually takes a bit of adjustment to find the right alignment too. A pro would have set the rails using a dial indicator between them. You may have to use another method? Dumb luck is not 100%. It still seems to be the most popular technique among amateurs though.
@Paul_Frederick Yes. I had to put in a screw and stand-off that I didn’t have on one of the motors.
@George_Allen that’s not so bad.