Steel pipe punching device and method for machining rack of gasoline engine

The invention discloses a steel pipe punching device and method for machining a rack of a gasoline engine, and belongs to the technical field of steel pipe punching devices and methods. The stamping device is fixed to the side wall of the frame, and the stamping device conducts positioning and punching on the steel pipe through a stamping head; the guide assembly comprises synchronous rods arranged at the two ends of the punching head, one end of each synchronous rod is provided with a sliding block movably connected with the corresponding guide column, X-shaped push rods are integrally formed on the periphery of the outer wall of each sliding block, and the X-shaped push rods are connected with rolling wheels in the height direction of the inner wall of the frame; and the bearing assembly comprises a hollow bearing ring, and the bottom end of the bearing ring is fixed to the first spring through a triangular rod. The technical problems that an effective anti-deviation limiting mechanism is lacked in the punc