Opposite roller spinning machining method for large-size thin-wall steel cylindrical part

Abstract

According to the large-size thin-wall steel cylindrical part pair roller spinning machining method, a core mold is replaced by an inner spinning roller for pair roller spinning, the inner surface and the outer surface of a blank can be thinned at the same time, the single-pass thinning rate is large, the spinning pass can be reduced under the same total thinning amount, the machining efficiency is improved, and the production cost is reduced. Furthermore, the inner surface quality of the spinning part is improved through opposite-roller spinning, the defect that deformation of the inner surface and the outer surface of a traditional spinning part is different is overcome, and the workpiece quality is obviously improved. The thin-wall steel cylindrical part with the diameter of 2000mm is spun under the condition that a spinning core mold is not needed, so that the processing cost of spinning products is reduced, the spinning core mold is prevented from being mounted and dismounted, the labor intensity of workers is reduced, and the safety of field operation is improved. For a spinning blank with the diameter of 2000 mm and the thickness of 30 mm, three-pass spinning forming is needed if die spinning is adopted, forming can be achieved through two-pass spinning if roller spinning is adopted, the machining period is shortened by one third, then the machining efficiency of products is improved, and efficient spinning is achieved.

Images