CNC Lathe Machine User:

The spindle will slow down when cutting the workpiece during low speed machining, for example the programed spindle speed is 200rpm, then it will down to 140rpm or even slower during cutting, and then the frequency inverter will alarm, how could we avoid this besides increasing the speed? Because if we set it high speed the tools can use few times only.

CNCmakers Support:

You can reduce the cutting depth under low speed machining, or change to a bigger spindle motor.