Upsetting forming method applied to cup-shaped part

Abstract

The invention discloses a method applied to upsetting forming of a cup-shaped part, which comprises five steps of blanking, coining, plate forming, trimming and shaping, side wall upsetting forming and the like, a non-uniform customized plate is introduced into a coining forming process which is easy to realize so as to change a traditional drawing and upsetting forming process chain, in addition, due to local thickening of the non-uniform customized plate, the thickness of the non-uniform customized plate is increased, and the thickness of the non-uniform customized plate is increased. The small-fillet male die is adopted to replace a large-fillet male die in traditional plate deep drawing forming, the deep drawing process is simplified into one step, meanwhile, the fillet shaping process can be omitted, and the deep drawing forming limit and the forming efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of sheet metal stamping technology, in particular to a method for upsetting and forging of cup-shaped parts. Background technique [0002] The sheet metal stamping process is mainly deformed under tensile stress, which can precisely form the external shape of the part, but it cannot control the wall thickness distribution of the part, and the thinning of the wall thickness at the rounded corner of the stamped part will easily lead to a decrease in the overall strength of the part. Some structural components, such as automobile transmissions and wheel hub parts, usually have high strength requirements at the fillet. If the strength of the fillet area is increased by increasing the thickness of the original sheet, it will inevitably lead to a decrease in material utilization, and the parts The increase in total mass does not conform to the development trend of green manufacturing, energy saving and emission re...

AI Technical Summary

Problems solved by technology

However, the cup-shaped preform is obtained by deep drawing, and the thinning at the fillet will cause folding defects in the subsequent upsetting process, such as figure 2 described, thereby affecting part performance

[0003] When the traditional sheet metal deep drawing cup is used, although the multi-step bottom fillet shaping is carried out, there is still an outer fillet, and due to the effect of tensile stress, the bottom fillet is very thin.

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