Special-shaped necking die

Abstract

The invention discloses a special-shaped necking die. The die comprises an upper die body and a lower die body which work in cooperation with each other, wherein the lower die body is located under the upper die body, the upper die body comprises a female die, an upper die guide column located in an inner cavity of the female die is fixedly connected with the female die, the top end of the upper die guide column downwards exceeds the top of the female die, the inner cavity of the female die is narrow in bottom and wide in top, the lower die body comprises a lower die base assembly, a square-frame-shaped bottom plate connecting frame is fixedly arranged on the lower die base assembly, an upper end bottom plate is fixedly arranged at the top of the bottom plate connecting frame, a lower dieguide sleeve is arranged in the upper end bottom plate, a special-shaped channel I is formed in the upper end bottom plate, a channel III defined by four slotting tool guide sliding blocks which are symmetrically distributed at four corners correspondingly is formed in an inner cavity of the bottom plate connecting frame, and a push block slotting tool is arranged in the channel III. According tothe special-shaped necking die, stable positioning of a large-size box body or a special-shaped workpiece can be achieved, the positioning precision problem during forming is solved, and meanwhile, the deformation problem of the workpiece is avoided.

Description

technical field [0001] The invention relates to a stamping die, in particular to a large-sized special-shaped shrinking die. Background technique [0002] At present, due to the large size and weight of large-sized special-shaped parts, the problem of deformation caused by their own gravity in a static state makes their molding process difficult. Taking the shrinking processing of the direction box as an example, the traditional processing technology There is a problem that it is difficult to locate accurately, the body is easily deformed during the molding process, and the yield rate is low. In addition, the workpiece itself is heavy, the assembly and disassembly speed is slow, and the processing efficiency is not high. [0003] Therefore, it is necessary to improve the prior art. Contents of the invention [0004] The invention provides a necking die which is easy to use and has high positioning accuracy. [0005] In order to solve the above-mentioned technical problem...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the large size and weight of large-sized special-shaped parts, the problem of deformation caused by their own gravity in a static state makes their molding process difficult. Taking the shrinking processing of the direction box as an example, the traditional processing technology There is a problem that it is difficult to locate accurately, the body is easily deformed during the molding process, and the yield rate is low. In addition, the workpiece itself is heavy, the assembly and disassembly speed is slow, and the processing efficiency is not high.

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