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Electromagnetic forming device for forming plate through fluid impact and forming method of electromagnetic forming device

An electromagnetic forming and impact plate technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of difficulty in meeting the micro-forming characteristics of parts, large gaps between parts and molds, and uneven force on parts, and improve electromagnetic The effect of forming efficiency, avoiding transition thinning, and improving forming accuracy

Active Publication Date: 2020-07-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still several problems in the field of electromagnetic forming in the field of micro-forming: (1) bulging and thinning deformation mainly occur in the micro-forming area; (2) it is difficult to fill the entire mold, and there is a large gap between the formed part and the mold; (3) Electromagnetic forming adopts a coil structure, then the parts facing the metal wires are subjected to a large electromagnetic force, and the insulating material is filled between the wires and the wires, then the parts corresponding to the insulating materials are subjected to little or no electromagnetic force. It leads to uneven force on the part, and it is difficult to meet the micro-forming characteristics of the part

Method used

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  • Electromagnetic forming device for forming plate through fluid impact and forming method of electromagnetic forming device
  • Electromagnetic forming device for forming plate through fluid impact and forming method of electromagnetic forming device
  • Electromagnetic forming device for forming plate through fluid impact and forming method of electromagnetic forming device

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Embodiment 1

[0044] Such as Figure 1-7 As shown, the embodiment of the present invention is firstly an electromagnetic forming device for fluid impingement sheet forming, which includes an electromagnetic forming coil 3, a die 1, a driving plate 5 and a press for sealing and pressing the sheet 7 on the die 1. The side block 2, the electromagnetic forming coil 3 is firstly charged and then discharged through the charging capacitor, the upper surface of the die 1 is provided with a forming cavity 12, the bottom of the forming cavity 12 is provided with an air hole 11 for exhaust, the driving plate 5 and the blank holder 2 The inner hole of the inner hole is sealed and slidingly connected, and the sheet material 7, the driving plate 5 and the blank holder 2 form a pressure chamber 13, and the pressure chamber 13 is provided with a fluid 6, and the fluid 6 can be liquid, such as water or oil, or gas, Such as high-temperature gas or low-temperature gas, the electromagnetic forming coil 3 is arra...

Embodiment 2

[0055] Such as Figure 8-9 As shown, in this embodiment, the main structure is the same as that of Embodiment 1, the difference is that: the electromagnetic forming coil 3 is installed on a coil mounting plate 8, and a coil mounting plate 8 that can drive the coil mounting plate 8 is installed on it. The moving mounting plate driving rod 10 of the die 1 can drive the coil mounting plate 8 to compress the fluid by controlling the mounting plate driving rod 10 to preform the sheet material 7 before step S4 of the first embodiment. Specifically, the mounting plate driving rod 10 can be driven by telescopic driving parts such as hydraulic cylinders, so that through the compound forming of quasi-static hydraulic pressure + high-speed hydraulic pressure, the required electromagnetic forming energy can be reduced, that is, the electromagnetic forming circuit with low power can also be used. Realize the forming of thicker sheet metal, realize the effect of "one plus one is greater tha...

Embodiment 3

[0057] Such as Figure 10-12 As shown, in this embodiment, the main structure is the same as that of Embodiment 1 and Embodiment 2, the difference is that a side axial force coil 9 is arranged inside the edge block 2 close to the fluid 6, and the side shaft The resultant electromagnetic force generated by the force coil 9 on the drive plate 5 is directed towards the die 1, that is, the downward electromagnetic force F1 generated by the side axial force coil 9 on the conductive layer 5-1 is much greater than the side axial force coil 9 The upward electromagnetic force F2 generated on the forming layer 5-2, after the electromagnetic forming coil 3 discharges and drives the drive plate 5 to move for a certain distance, discharges the side axial force coil 9, thereby generating a downward force on the drive plate 5 The resultant force of the parts realizes the pressure retention of the parts, prevents the parts from rebounding, and finally realizes the high-precision deformation o...

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Abstract

The invention discloses an electromagnetic forming device for forming a plate through fluid impact and a forming method of the electromagnetic forming device. The electromagnetic forming device comprises an electromagnetic forming coil, a female die, a driving plate and an edge pressing block used for pressing the plate on the female die in a sealed manner, wherein the driving plate is in sealed sliding connection with an inner hole of the edge pressing block; the plate, the driving plate and the edge pressing block form a pressure containing cavity; fluid is arranged in the pressure containing cavity; and the electromagnetic forming coil is arranged outside the pressure containing cavity and is close to the driving plate. According to the electromagnetic forming device and the forming method, the high-speed fluid is adopted for driving a part to be subjected to micro forming, the advantages that the forming limit of a material can be improved and springback can be reduced through thehigh speed can be utilized, meanwhile, the plate can be completely pressed against a die cavity of the female die through the fluid, and the forming precision is improved.

Description

technical field [0001] The invention relates to the technical field of material processing and forming, in particular to an electromagnetic forming device and a forming method for fluid impact sheet material forming. Background technique [0002] In recent years, with the rapid development of MEMS technology, micro-channel components such as micro-channel heat exchangers, micro-fuel cell bipolar plates, and microbial chips have been widely used in the fields of energy, microelectronics, aerospace, and biomedicine. application. Taking micro fuel cells as an example, the document "A high efficient micro-proton exchange membrane fuel cell by integrating micro-nano synergical structures" mentions that among various alternative energy sources, fuel cells are considered to be the preferred clean energy source in the 21st century, Therefore, both at home and abroad pay special attention to it. The document "Fabrication of metallic bipolar plate for proton exchange membrane fuelce...

Claims

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Application Information

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IPC IPC(8): B21D26/14B21D26/021B21D26/031B21D37/16
CPCB21D26/14B21D26/021B21D26/031B21D37/16
Inventor 崔晓辉代鹏逸颜子钦喻海良黄长清
Owner CENT SOUTH UNIV