An Electric Field Assisted Forming Die for Ultra-High Strength Multi-channel Bending Parts

Abstract

The invention discloses an electric field-assisted forming die of an ultrahigh-strength multi-bent workpiece. The die comprises an upper die seat and a low die seat; a guide column is arranged on thelower die seat, and the upper die seat is in sliding connection with the guide column through a guide sleeve; the upper die seat, a bending male die, a base plate, edge pressing blocks and the like form an upper die of the die, three positive electrodes are arranged on the bending male die, and an insulating sleeve is arranged on the outer surface of each positive electrode; two negative electrodes are arranged on each of the two metal edge pressing blocks and a bending female die, an insulating sleeve is arranged on each negative electrode at the same time, and the electrodes are connected with a power source; the lower die seat, the bending female die and the like form a lower die of the die, and meanwhile, the positive electrodes and the negative electrodes are ensured to form loops inthe bending process. According to the die, an existing sheet bending forming process is mainly improved, the corresponding structure is changed on the basis of an existing stamping die, the stamping die is combined with an external electric field, so that the problems that an ultrahigh-strength sheet is large in springback, difficult in bending and the like in the bending process are solved; and the bending forming characteristic of the sheet is improved, so that the sheet can meet the forming requirements of the bent workpiece, and the service life of the die can be prolonged.

Description

technical field [0001] The invention relates to the technical field of forming dies, in particular to an electric field-assisted forming die for ultra-high-strength multi-channel bending parts. Background technique [0002] Bending forming is a process of using a bending die to make a sheet or ring blank into a desired curved shape under the pressure of a press. It is one of the basic processes of stamping. It can process thin-walled parts of various complex shapes, as well as ring parts; the size of curved parts is also different. There will be a wide range of applications in light industry, military and civilian products. In the actual bending forming process, there will be inner instability wrinkling, serious bending rebound phenomenon, poor formability and other phenomena, and the results will affect the surface quality, hardness, strength, toughness and service life of the workpiece to varying degrees. and other performance. In particular, ultra-high-strength thin pl...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an electric field-assisted forming die for ultra-high-strength multi-channel bending parts to solve the problems of serious springback and difficulty in bending ultra-high-strength thin plates during the bending process. According to the characteristics of ultra-high-strength materials , thereby improving its bending forming process, combining traditional stamping dies with electric fields, improving the bending forming characteristics of ultra-high-strength materials, enabling the workpiece to be fully bent during the bending process, and improving the shape of the workpiece, etc., thereby improving the product Excellent surface quality, mechanical properties and service life

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