Electric spindle with optimized structure

The utility model discloses a motorized spindle with an optimized structure, which relates to the technical field of machining equipment, and comprises a spindle box, a spindle, a shaft sleeve and a feeding mechanism, the feeding mechanism comprises a servo motor, a connecting seat, a lead screw pair and a guide rod; a sliding groove is formed in the top of the spindle box, a front plate and a rear plate are arranged at the two ends of the sliding groove, and at least one guide rod is fixedly arranged between the front plate and the rear plate. The lead screw pair comprises a lead screw and a lead screw nut, the front end and the rear end of the lead screw are rotationally arranged on the front plate and the rear plate respectively, and the rear end of the lead screw is connected to the servo motor. The upper end of the connecting base is provided with a lead screw nut and a through hole matched with the guide rod, and the lower end of the connecting base extends into the sliding groove and is fixedly connect