Multi-point-electromagnetic gasification composite forming device for plates and forming method

Abstract

The invention discloses a multi-point-electromagnetic gasification composite forming device for plates and a forming method. The multi-point-electromagnetic gasification composite forming device comprises upper punches and lower punches which can move up and down, the multiple upper punches are arrayed to form an upper punch group, and the multiple lower punches are arrayed to form a lower punch group. The multi-point-electromagnetic gasification composite forming device is characterized in that an elastic clamping assembly, a first elastic pad and an electrified gasification metal sheet are arranged between the upper punch group and the lower punch group, the metal sheet is arranged between the elastic clamping assembly and the first elastic pad, and the elastic clamping assembly comprises second elastic pads used for being clamped on the upper sides and the lower sides of the plates. By means of the multi-point-electromagnetic gasification composite forming device and the forming method, on the one hand, the positions of the upper punches and the lower punches can be controlled by a computer to form a shape-variable flexible mold, so that the plates in different shapes can be quickly formed; and on the other hand, through electromagnetic forming of the plates, springback is greatly reduced and even completely eliminated, and the plate forming quality is improved.

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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