A manufacturing process and a stamping die for a wheel hub

Abstract

The present application relates to the field of punch forming, in particular to a new wheel hub cover manufacturing process and a punch die, the forming process includes five procedures of S1 stretching, S2 trimming and punching, S3 flanging, shaping and side trimming, S4 trimming, punching, side trimming and side punching, and S5 punching and side flanging, the material sheet is punched into an initial blank shape in the S1 stage, the process supplement material part and the local hole of the initial blank are punched out in the S2 stage, the initial blank is straightened, shaped and trimmed on the side in the S3 stage, the inner and outer edges, both ends and the outer bottom edges of both ends of the initial blank are trimmed and punched in the S4 stage, finally, the remaining holes are punched out in the S5 stage, and the side flanging of the shape of the negative angle on both sides is performed to obtain the wheel hub cover finished product. The present application is a new automobile wheel hub cover manufacturing process, the workpiece is sequentially formed by several composite procedures, the innovation lies in the splitting and compounding of the procedures, the reasonable arrangement of the front and rear sequence, and the effective improvement of the production efficiency and yield.

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