The importance of turning cnc lathe's servo system
The servo system of turning cnc lathe is an important part, which realizes feed servo control and spindle servo control. The function of the servo system is to convert the command information received from the numerical control device into the linear displacement or angular displacement motion of the lathe executing part after power amplification and shaping. Since the servo system is the reciprocal link of turning cnc lathe, its performance will directly affect the technical indicators such as accuracy and speed. Therefore, the servo drive device of the equipment requires good fast response performance and accurately and sensitively track the numbers issued by the CNC device Command signal, and can faithfully execute the command from the numerical control device, improve the system's dynamic following characteristics and static tracking accuracy.
The servo system includes two parts, the drive device and the actuator. The drive device consists of a spindle drive unit, a feed drive unit, a spindle servo motor, and a feed servo motor. Stepping motors, DC servo motors and AC servo motors are commonly used drive devices. The measuring element detects the actual displacement value of each coordinate axis of the turning cnc lathe and inputs it to the turning cnc lathe numerical control device through the feedback system. The numerical control device compares the feedback actual displacement value with the command value, and outputs to the servo system. The required displacement command for the set value.