Spinning method for machining forward and reverse rims and hubs

The invention discloses a spinning method for forward and reverse rim and hub machining, and particularly relates to the technical field of rim machining. A sliding seat vertically slides on sliding frames to drive a side plate and a high-pressure wheel to move from top to bottom, and in the process of sliding from top to bottom, the two sliding frames are away from each other, so that the side plate and the high-pressure wheel are separated from each other; the rim parts of the forward and reverse rims and hubs are spun from top to bottom along the outer surface of a preheated blank, a spun workpiece is formed, uniform spinning work is achieved through mutual far-away or close cooperation of the two sliding frames and vertical sliding of the sliding seats, and the automation degree is high; the first air cylinder pushes the three-side cover to downwards cover the exteriors of the high-speed rotating disc and the two side plates, meanwhile, the second air cylinder pushes the pressing disc to downwards, and th