Difficult-to-deform metal sheet electric field assisted deep drawing device

Abstract

The invention discloses a difficult-to-deform metal sheet electric field assisted deep drawing device, and belongs to the technical field of solid particle forming dies under the action of an electricfield. A male die fixed to the lower portion of a press machine and used for conducting insulating treatment together with the press machine and a female die arranged at the upper portion of a lowerdie seat and provided with an inner hole are included, insulating layers are arranged on the upper surface of the female die and the side wall of the inner hole of the female die, the upper end of thefemale die is provided with a blank holder for pressing a plate sheet on the female die, the bottom of the inner hole of the female die is provided with an elastic block, the lower end of the blank holder is provided with a positive electrode which is in contact with the plate sheet and is connected to a power supply firing line, the inner side wall of the female die is provided with a female dieelectrode connected to a power supply zero line, and the top end of the elastic block is provided with a negative electrode connected to the power supply zero line. The difficult-to-deform metal sheet electric field assisted deep drawing device is simple in structure, high in forming efficiency, less in labor time and stable in product quality.

Description

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

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.

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