Plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing

Abstract

The invention provides a plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing, which comprises a male die, a blank holder, a female die, a pressurizing device, an electromagnetic proportional overflow valve and a fluid heating device. A female die cavity arranged inside the female die is connected with a high-pressure end of the pressurizing device through a filling hole, the blank holder is arranged on the female die, a blank holder cavity arranged at the bottom of the blank holder is connected with the high-pressure end of the pressurizing device through a filling hole, and the high-pressure end and a low-pressure end of the pressurizing device are connected with the fluid heating device and the electromagnetic proportional overflow valve respectively. By the aid of the hydroforming device and by means of radial pressurizing, hydraulic blank pressing and differential temperature hydroforming, the forming performance of a plate can be improved, and parts with more complicated shapes, higher drawing ratio and higher requirements on dimensional precision can be formed.

Description

technical field [0001] The invention relates to a sheet material liquid-filled thermoforming device, in particular to a sheet material differential temperature liquid-filled forming device capable of realizing radial pressure and hydraulic edge pressing. Background technique [0002] In recent years, with the increasingly serious problems of environmental pollution and shortage of energy and raw materials, the demand for lightweight, integrated and high-quality structures in aerospace, automotive and other manufacturing fields has increased, making many plates such as aluminum alloys and magnesium alloys , titanium alloys, ultra-high-strength steels, high-temperature alloys or composite materials have received increasing attention. Although these materials have many advantages, compared with traditional materials such as low carbon steel, they have disadvantages such as serious anisotropy, obvious stress concentration, severe springback and poor room temperature plasticity,...

AI Technical Summary

Problems solved by technology

This invention belongs to another form of device for improving the forming limit of sheet metal. This device does not consider the improvement of the material forming ability of the flange part with the largest deformation degree during the sheet metal forming process. In addition, the heating unit of this invention is directly placed in the die , which needs to heat the inside of the mold to a very high temperature, and then heat the fluid medium and the sheet through heat conduction, the heating efficiency is low, the energy consumption is large, and it is difficult to achieve precise temperature control

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