The Characteristics Of CNC Lathe Spindle

In the early year, CNC lathe mostly adopted DC drive, due to the limited commutation of DC motor, the constant power speed range of speed regulation with constant power, it is unreasonable for the lathe to use permanent magnet motor, so it often uses other excitation DC servo motor and cage induction AC servo motor. With the development of microprocessor technology and high power transistor technology, AC spindle drive system is applied to spindle drive of CNC machine tools. At present, the new CNC machine tools at home or aborad basically use AC spindle drive system, and AC spindle drive will replace the DC spindle drive system completely. Unlike DC, AC motors are not limited in high speed and large capacity and have more advantages in noise control and price than the DC system.