Interference magnitude regulation and control device for interference connection of high-speed motorized spindle and bearing

The utility model discloses an interference magnitude regulating and controlling device for interference connection of a high-speed motorized spindle and a bearing. The interference magnitude regulating and controlling device comprises a bearing seat (1), a spring (2), the bearing (4), an outer sleeve (5), an inner sleeve (6), a pre-tightening nut (7) and the motorized spindle (9), a shaft shoulder (3) is arranged on the left side of the motorized spindle, the spring sleeves the motorized spindle, the left end of the spring is connected with the shaft shoulder, and the right end of the spring is connected with the inner sleeve. The inner side wall of the inner sleeve is a cylindrical side wall and slides on the motorized spindle, the outer side wall of the inner sleeve is a conical side wall, and the tip of the inner sleeve faces leftwards; the outer side wall of the outer sleeve is a cylindrical side wall and is connected with the bearing, the bearing is fixed on the bearing seat, the inner side wall of the