Forming process and mold structure for stepped sleeve of large washer

The invention relates to a forming process and mold structure for a stepped sleeve of a large washer. The forming process comprises the steps of cutting, shaping, reverse reshaping, broaching, head patting shaping, forming of the washer and steps, and punching for waste material passing. The stepped sleeve of the large washer is manufactured in a cold extrusion manner, so that the material utilization rate is improved, and the mechanical property of the product is ensured. 一种大华司带台阶的套管成型工艺及模具结构，它包括切料，整形，反转再整形，拉孔，拍头整形，成型华司和台阶，穿孔通废料通过冷挤压的方式制造大华司带台阶套管，提高了材料利用率，保证了产品的力学性能。