A multi-point-electromagnetic gasification composite forming device and forming method for plates

Abstract

The invention discloses a multi-point-electromagnetic gasification compound forming device and forming method for plates, including an upper punch and a lower punch that can move up and down, a plurality of upper punch arrays form an upper punch group, and multiple A lower punch array forms a lower punch group, which is characterized in that an elastic clamping assembly, a first elastic pad and an electrified metal sheet are arranged between the upper punch group and the lower punch group, and the metal sheet is arranged on the elastic Between the clamping assembly and the first elastic pad, the elastic clamping assembly includes a second elastic pad for clamping on the upper and lower sides of the plate. On the one hand, the present invention can control the position of the upper punch and the lower punch by the computer to form a "flexible mold" with variable shape, so as to realize the rapid forming of plates of different shapes; The amplitude is reduced or even completely eliminated, which improves the quality of sheet forming.

Description

technical field [0001] The invention relates to the technical field of plate forming, in particular to an electromagnetic-multi-point composite forming device for plate and a forming method thereof. Background technique [0002] With the rapid development of high-tech industries such as aerospace, advanced aircraft, spacecraft, rockets, and missiles urgently need to adopt large-size plate-shaped parts with very significant structural benefits to reduce weight, improve the load-carrying capacity limit and range of the carrier, etc. performance. [0003] In the forming of large-size sheet metal, different regions of the sheet often have different degrees of deformation, which will lead to different directions and different sizes of springback in different regions of the sheet, which will seriously affect the forming quality. Moreover, high-strength and lightweight materials such as aluminum alloys and titanium alloys are currently widely used in aerospace. Compared with tradi...

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Problems solved by technology

[0005] However, the current development of electromagnetic forming technology is severely limited by the life of the coil. In the electromagnetic forming process, the coil is also subject to huge electromagnetic and mechanical loads when generating pulsed electromagnetic force that deforms the workpiece. When the load is too large, the coil is damaged. damage, resulting in failure of forming

Moreover, electromagnetic forming is only suitable for materials with high electrical conductivity. For materials with low electrical conductivity, materials with high electrical conductivity are often required to drive forming, which also causes waste of materials.

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