Electromagnetic-multipoint composite forming device and forming method for sheet material

A composite forming and plate technology, applied in the field of plate forming, can solve the problems of large distance between plate and die, increase the complexity of forming process, low forming efficiency, etc. cost effect

Active Publication Date: 2020-05-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the repeated forming process leads to low forming efficiency, and after each layer of sheet material is drawn, the distance between the sheet material and the mold is relatively large, and the discharge parameters must be precisely controlled to achieve precise fit between the sheet material and the mold , which also increases the complexity of the forming process

Method used

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  • Electromagnetic-multipoint composite forming device and forming method for sheet material
  • Electromagnetic-multipoint composite forming device and forming method for sheet material
  • Electromagnetic-multipoint composite forming device and forming method for sheet material

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Effect test

Embodiment 1

[0050] Such as Figure 1a-Figure 1d As shown, the embodiment of the present invention first discloses an electromagnetic-multipoint composite forming device for sheet metal, which includes an upper punch 1 and a lower punch 2. A plurality of upper punches 1 are arrayed to form a punch 8. An array of punches 2 forms a concave die 9, wherein the upper punch 1 and the lower punch 2 are driven up and down by a computer-controlled hydraulic cylinder. The punch 8 is provided with an upper coil support rod 3 that can move up and down. Similarly, the upper coil supports The rod 3 is also driven by a hydraulic cylinder to move up and down. The lower end of the upper coil support rod 3 is provided with an electromagnetic coil 4 that can shape the plate 7 so that the electromagnetic force of the electromagnetic coil 4 drives the plate to deform at a high rate. Specifically, in order to ensure uniform deformation of the sheet material 7, the upper coil support rod 3 and the upper punch 2 ar...

Embodiment 2

[0060] Such as Figure 2a-Figure 2f As shown, the structure of the male mold 8 in this embodiment is basically the same as that of the first embodiment, except that: in this embodiment, the female mold 9 is provided with a lower coil support rod 10 that can move up and down. The upper end of 10 is provided with an electromagnetic coil 4 that can be formed on the plate 7. When the plate 7 is punched, the electromagnetic coil 4 of the punch 8 and the die 9 is discharged twice, and the electromagnetic coil 4 is formed on the upper end of the lower punch 2. Down side. As a result, the electromagnetic coils on the male mold 8 and the female mold 9 complement each other for the sheet material 7 to further improve the forming efficiency and quality of the sheet material 7.

Embodiment 3

[0062] Such as Figure 3a As shown, the structure of the male mold 8 and the female mold 9 in this embodiment is basically the same as that of the second embodiment, the difference is: in this embodiment, the electromagnetic coil 4 on the male mold 8 and the electromagnetic coil on the female mold 9 4 are arranged alternately from the inside to the outside, so that the electromagnetic coil 4 can fully cover the forming surface of the plate 7 and further improve the forming efficiency and quality of the plate 7.

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Abstract

The invention discloses an electromagnetic-multipoint composite forming device for a sheet material. The device comprises upper punching heads and lower punching heads; a plurality of the upper punching heads are arrayed to form a male die; a plurality of the lower punching heads are arrayed to form a female die; a coil supporting rod which can be displaced up and down is arranged in the male dieand/or the female die; and an electromagnetic coil which can form the sheet material is arranged at one end, close to the sheet material, of the coil supporting device. According to the electromagnetic-multipoint composite forming device for the sheet material, on one hand, different shapes of sheet materials can be rapidly formed by forming a shape changeable flexible die by controlling the positions of the upper punching heads and the lower punching heads by a computer; and on the other hand, the rebounding of the sheet material is greatly reduced or even completely eliminated through electromagnetic forming, so that the sheet material forming quality is improved.

Description

Technical field [0001] The invention relates to the technical field of sheet metal forming, in particular to an electromagnetic-multipoint composite forming device for sheet metal 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, there is an urgent need to adopt large-size plate-shaped parts with significant structural benefits to reduce mass and increase the overall carrying capacity limit and range of the carrier. performance. [0003] Plastic forming of large-size plate-shaped parts requires large-scale equipment, such as powerful compression molding using a giant press. At present, developed countries such as the United States, France, and Russia have giant hydraulic presses of 450 to 750 MN level, and my country has also started the development of 80,000 tons giant hydraulic presses. However, such equipment requires huge investment and the equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/14
CPCB21D26/14
Inventor 崔晓辉夏雯桢喻海良颜子钦杜志浩肖昂
Owner CENT SOUTH UNIV
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