The actual movement and display of the new generation machine tools do not match.

The actual movement of a new generation of machine tools is inconsistent with the display, which is a common phenomenon of variable frequency motors, because the spindle speed is determined by numerical control programs and inverter parameters.

If the inverter parameters are not set accurately, an error will occur. Fault phenomenon: During the machining process of FANUC 0T CNC lathe, the user found that the actual moving dimensions of X axis and Z axis were inconsistent with the theoretical values.

Analysis and treatment process: because the X axis and Z axis of this CNC lathe work normally, the fault is only that the actual value of movement is inconsistent with the theoretical value, so it can be judged that the machine tool system, driver and other components are fault-free. The reason for the problem is that the parameters of the mechanical transmission system are not properly matched with those of the control system.

The matching parameters of mechanical transmission system and control system are different in different systems, which usually include electronic transmission ratio, command multiplication factor, detection multiplication factor, encoder pulse number, pitch and so on. The above parameters must be set uniformly to ensure that the commanded value of the system is consistent with the actual moving value.