Forming, trimming and punching compound die

Abstract

The invention discloses a forming, trimming and punching compound die, which is used for compound molding of forming, trimming and punching of sheet metal parts. A guide sleeve is installed on an upper die base, a guide column is installed on a lower die base, a punch is fixed to a fixed plate, a trimming female die and the fixed plate are fixed to the upper die base, a pressing plate is hung below the fixed plate, the pressing plate is arranged in an inner hole of the trimming female die, and a spring penetrates through the fixed plate to act between the upper die base and the pressing plate;a positioning block is installed on the lower die base and located on one side of the plate; and a punch-die is fixed to the lower die base and faces the pressing plate. Before the trimming female die and the punch enter the punch-die, the pressing plate presses and forms the plate under the action of the spring, the upper die base continues to move downwards, then the edge of the plate is cut off, meanwhile, a forming hole is punched, and therefore part forming and trimming and punching can be completed in a stamping mode at a time. The forming, trimming and punching compound die is simple in structure, capable of effectively improving part stamping quality and production efficiency and reducing cost, and particularly suitable for stamping forming of low-strength thin metal parts and parts with gentle profiles and holes inside.

Description

technical field [0001] The invention relates to the technical field of stamping and forming in mechanical manufacturing, in particular to a forming trimming and punching composite mold. Background technique [0002] At present, for stamping parts with holes in the internal profile, the following process schemes are usually used, but there are many shortcomings and defects: [0003] (1) Punching after blanking and forming: the mold structure is simple, but each process requires a pair of molds, a total of three sets, and the efficiency is low. Unstable, resulting in low position accuracy of the hole after punching. [0004] (2) Forming after blanking and punching: Compared with the previous scheme, the mold structure is slightly more complicated, requiring two sets of molds. Although the efficiency has been improved, the internal holes of the parts are punched out in the first process, and then The shape of the hole will be deformed due to material flow during the forming o...

AI Technical Summary

Problems solved by technology

[0003] (1) Punching after blanking and forming: the mold structure is simple, but each process requires a pair of molds, a total of three sets, and the efficiency is low. Unstable, resulting in poor position accuracy of the hole after punching

[0004] (2) Forming after blanking and punching: Compared with the previous scheme, the mold structure is slightly more complicated, requiring two sets of molds. Although the efficiency has been improved, the internal holes of the parts are punched out in the first process, and then The shape of the hole will be deformed due to material flow during the forming of the second process, which still affects its position accuracy

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