Computer servo cutting machine adopts servo motor as power component. Servo motor is also called executive motor. During the working process of the computer servo cutting machine, the servo motor converts the received electrical signal into speed output. When the signal voltage is zero, there is no rotation, and the rotation speed decreases at a uniform speed with the increase of torque. The rotor inside the servo motor is a permanent magnet, and the U/V/W three-phase electricity controlled by the driver forms an electromagnetic field, and the rotor rotates under the action of this magnetic field, and the encoder of the motor feeds back the signal to the driver.