Why do CNC equipment need to use servo motors?

CNC equipment requires the use of servo motors because servo motors have characteristics such as high precision, high response, high speed, and high reliability, which can meet the requirements of high-precision control for CNC equipment. The servo system in CNC equipment generally consists of servo motors, encoders, controllers, etc. The servo motor serves as the executing element, receives instructions from the controller, converts electrical energy into mechanical energy, and precisely controls the movement of the machine tool.

Compared with traditional stepper motors, servo motors have higher control accuracy, faster response speed, and better motion stability. Servo motors can perform closed-loop control based on encoder feedback signals, achieving precise control of machine tool motion. The stepper motor can only control the stepper angle by controlling the number of pulses, which has low control accuracy and is prone to generating stepper errors. Therefore, servo motors are widely used in high-precision control equipment such as CNC machine tools, robots, and automated production lines.