An electric field assisted deep drawing device for difficult-to-deform metal sheet

Abstract

The invention discloses an electric-field-assisted deep-drawing device for a difficult-to-deform metal sheet, which belongs to the technical field of solid particle forming molds under the action of an electric field. A die with an inner hole, an insulating layer is provided on the upper surface of the die and the side wall of the inner hole of the die, the upper end of the die is provided with a blank holder that presses the sheet material on the die, and the bottom of the inner hole of the die is provided with an elastic The lower end of the blank holder is provided with a positive electrode connected to the live wire of the power supply, the inner wall of the die is provided with a die electrode connected to the neutral wire of the power supply, and the top of the elastic block is provided with a negative electrode connected to the neutral wire of the power supply. The electrode has simple structure, high forming efficiency, less labor time consumption and stable product quality.

Description

technical field [0001] The invention relates to a drawing die under the action of an electric field, in particular to an electric field-assisted drawing device for a difficult-to-deform metal sheet, which is used in the technical field of solid particle forming dies under the action of an electric field. Background technique [0002] Deep drawing is a processing method that uses a deep drawing die to make a flat blank or a hollow process part into an open hollow part under the pressure of a press. It is one of the basic processes of stamping. It can process rotating parts, as well as box-shaped parts and other thin-walled parts with complex shapes. The size of the deep-drawing parts can range from a few mm in diameter to 2-3m, and the thickness is 0.2-300mm. It is widely used in automobiles, tractors, airplanes, clocks, electrical appliances, instruments, light industry and civilian products. The traditional rigid punch-and-concave die drawing process requires multiple dr...

AI Technical Summary

Problems solved by technology

Zhao Changcai et al. used solid particles instead of punches to perform half-mold forming on sheet metal, which overcomes the defects of hydroforming. However, there are problems such as hard-to-deform metals that are easy to break when drawn, parts cannot be automatically ejected after forming, and particles are full of punches and Die clearance, manual removal becomes very difficult, and the ejection mechanism is unclear, which cannot be used in progressive dies, etc.

Images