A magnetic pulse forming device and method for small-diameter flanging holes in aluminum alloy plates

Abstract

The invention discloses a device and method for forming small-diameter flanging holes in an aluminum alloy plate through magnetic pulses, and belongs to the field of metal plate part plastic forming and manufacture. The device and method solve the problems that when the flanging holes are formed in the aluminum alloy plate through an existing magnetic pulse forming technology, the service life of a coil is short, damage easily happens to the machined workpiece, a plurality of flanging and forming procedures exist when a steel die is adopted, and the forming quality is not stable. A coil wire turn is packaged in a coil framework, a flanging female die is fixed to a bottom plate, the upper section of a positioning ring and the lower section of the positioning ring are arranged in a columnar magnetic trap and the flanging female die, a magnetic trap limiting ring is arranged on the upper end face of the columnar magnetic trap, the solenoid coil is arranged on the outer side wall of the columnar magnetic trap and the outer side wall of the magnetic trap limiting ring in a sleeved mode, and a longitudinal seam is formed in the side wall of the columnar magnetic trap. An upper pressing plate is arranged on the upper end face of the magnetic trap limiting ring and the upper end face of the coil framework. The aluminum alloy plate is arranged between the flanging female die and the coil framework, and two output ends of a magnetic pulse control circuit are connected with two wiring terminals of the coil wire turn. The device and method are used for forming the small-diameter flanging holes in the aluminum alloy plate through magnetic pulses.

Description

technical field [0001] The invention relates to a magnetic pulse forming device and method for small-diameter flanging holes of metal plates, belonging to the field of plastic forming and manufacturing of metal plate parts. Background technique [0002] In order to improve the atmospheric environment, energy saving and consumption reduction are the principles that must be followed for the sustainable development of the manufacturing industry, and the lightweight of structures and materials is an inevitable way. Due to the characteristics of high specific strength, in the advanced automobile manufacturing industry, light alloy plates such as high-strength aluminum alloys and magnesium alloys are used more and more, and in the aerospace manufacturing industry, aluminum alloys are widely used in various Launch vehicle and aircraft. In the frame structure commonly used in aerospace vehicles, there are many positions where holes need to be flanged. On the one hand, the structura...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic pulse forming device and method for small-diameter flanging holes in aluminum alloy sheets, so as to solve the problem of low coil life and low workpiece It is easy to be damaged and there are many steps in the flanging forming process of the steel mold, the forming quality is unstable, the forming limit is low, and it is difficult to obtain the flanging hole parts that meet the technical requirements.

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