The design of position control structure of milling head spindle based on servo electric cylinder drive

Aiming at the shortage of the retracting movement of the main shaft of the sliding part milling head of the common part of the combined machine tool, a structural scheme of the retracting movement of the main shaft driven by the servo electric cylinder is designed. The milling head spindle is extended and retracted into a linear reciprocating motion. The hydraulic cylinder drive is converted into a servo electric cylinder push rod drive. The spindle extension position is stepless and precise control, and has the functions of automatic rough milling, semi-finishing milling, finishing milling and allowing the knife. Flexible machining on CNC combined milling machines has been widely used.