I’ve got a 2023 8L lathe. we have been running the same program for about 2 weeks straight, no issues at all. When motor stalls, we change the insert.
Turning a 1.625" OD steel part, simple grooving operation, cycle is 21 seconds long start to finish.
plunge rate is 0.0003 (3 tenths per rev) with a nice carbide sandvik insert. all in all, going well.
no torque. on plunge, it stalls immediately. There is simply no torque. I have made a support ticket but have gotten no reply. Not sure if this is a motor or VFD issue.
The motor spins up and holds speed just fine. just practically zero torque. It is not a setup issue. we have changed nothing and have been running for weeks. Have chased down wires looking for something loose, no issues. Did a VFD firmware reset at the advice of Tormach on another issue, did not help (Parameter 10, 121, All, etc.)
Help please. I need to get us back up and running. I am well within warranty period. Just looking for advice. Is this a VFD issue or a motor issue?