Stamping device and stamping method of annular corrugated plate

Abstract

The invention discloses a stamping device and stamping method of an annular corrugated plate, and relates to the technical field of plastic forming. The punching device comprises an annular corrugatedstamping die, wherein the annular corrugated stamping die comprises a circular table in the middle and corrugated grooves distributed along the circumferential direction of the circular table; the annular corrugated stamping die comprises a first-pass forming die, a second-pass forming die, a third-pass forming die and a fourth-pass forming die, the diameters of the top parts of the circular tables of the first-pass forming die, the second-pass forming die, the third-pass forming die and the fourth-pass forming die are the same, and the size of the corrugated grooves of the first-pass formingdie, the second-pass forming die, the third-pass forming die and the fourth-pass forming die are reduced in sequence. The stamping device and stamping method of the annular corrugated plate has the advantages that forming efficiency is improved, and meanwhile, the defects of cracking, wrinkling and the like in a forming process are avoided.

Description

technical field [0001] The invention relates to the technical field of plastic forming, in particular to a punching device and a punching method for an annular corrugated plate. Background technique [0002] Ring corrugated plate parts have complex shapes and are usually prepared by powerful spinning or ordinary spinning. However, with strong spinning, the wall thickness of the parts is too thin, which often leads to insufficient strength of the workpiece and cannot meet the requirements of use. However, the ordinary spinning method needs to use multiple spinning operations, the production efficiency is low, the geometric shape design of the intermediate pass parts is difficult and the scrap rate is high, and it is also difficult to meet the needs of mass production. [0003] Stamping production is the most common mass production method for sheet metal parts. However, due to the limitation of the geometric shape of the corrugated plate part, the part has more corrugated ro...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the geometric shape of the corrugated plate parts, the part has more corrugated fillets. During the stamping forming process, the flow resistance at the fillets is too large, resulting in cracking defects in the parts.

At the same time, because the blank is too large, it is prone to wrinkle defects during the forming process

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