Sheet metal electroplasticity multifunctional v-shaped bending die and system

Abstract

The invention discloses a sheet metal electroplastic multifunctional V-shaped bending mold and system, belonging to the field of metal processing, comprising an upper mold and a lower mold, and the upper mold includes a mold handle, an upper mold base, a convex The mold holder, the electrode holder and the punch, the electrode holder is connected with the upper electrode; the lower mold includes the lower mold holder, the lower mold holder is provided with a backing plate, and the backing board is provided with two die holders, the die is fixed The base is connected with a free-bending die, and the die fixing base and the lower die base form a movable pair that can translate along the length direction of the lower die base; The mold base material is insulating material. The invention can realize V-shaped free bending of the metal sheet under the action of high-energy pulse current on only one set of molds, and can simultaneously study the effects of current frequency, current density, electrification mode, punch fillet radius, bending angle, etc. on the bending return. Effects of elastic and bending forces.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a sheet metal electroplastic multifunctional V-shaped bending die and system. Background technique [0002] The electroplastic effect was first proposed by former Soviet scholar Troitskii. The electroplastic effect is a phenomenon in which the deformation resistance of materials (including various metal materials, ceramic materials, superconducting materials, powder metallurgy products, etc.) drops sharply and plasticity increases significantly under the action of moving electrons (current or electric field). Including Joule heating effect, magnetic compression effect and pure electroplastic effect and other physical effects. The pulse current flowing through the metal sheet can promote the movement of movable dislocations and holes in the material, promote the slip and climb of dislocations, inhibit the occurrence of twins, and promote the nucleation of recrystallization, so tha...

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Problems solved by technology

At the same time, for the research on the bending forming of sheet metal, because there are many factors affecting the bending springback, a large number of experiments need to be carried out to obtain the bending data of the sheet metal under certain conditions. However, the existing equipment generally has a single function, and it is necessary to realize multiple This test needs to be carried out on different equipment, or the existing equipment should be modified, but this modification is more troublesome, resulting in more time-consuming and laborious and a greater economic burden

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