The invention provides a rotary wheel bracket clamp holder device and a
spinning machining method for a large thin-wall curved face product. The rotary wheel bracket clamp holder device comprises a tool rod, a wheel base and a
spinning rolling wheel which is in a three-arc combined shape. The
spinning machining method for the large thin-wall curved face product comprises the steps that the periphery of a plate-shaped blank with good
ductility is fixed to a tool or a die, the whole is put on a large vertical lathe platform, a spinning device is fixed to a lathe
saddle, a lathe programs a curved face circular curve, rapidly
spins the blank and carries out feeding
machining according to an arc track in a layered circular step-by-step manner, and the blank plastically deforms under the action of the rotary wheel and forms a curved face in an accumulation manner. By means of the rotary wheel bracket clamp holder device and the spinning machining method, the product quality and the production benefits are greatly improved, it is ensured that the fracture phenomenon caused by excessive stretching cannot occur during the stretching process, the
surface smoothness degree is kept, and no scratches appear on the surface.