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Electromagnetic forming device and forming method for fluid impact sheet metal forming

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: 2022-05-27
恩普赛(襄阳)技术有限公司
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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 and forming method for fluid impact sheet metal forming
  • Electromagnetic forming device and forming method for fluid impact sheet metal forming
  • Electromagnetic forming device and forming method for fluid impact sheet metal forming

Examples

Experimental program
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Effect test

Embodiment 1

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

Embodiment 2

[0055] like Figure 8-9 As shown, in this embodiment, the main body structure is the same as that of the first embodiment, the difference is that the electromagnetic forming coil 3 is mounted on a coil mounting plate 8, and a coil mounting plate 8 is mounted on the coil mounting plate 8 to drive the coil mounting plate 8 to The mounting plate driving rod 10 is moved by the die 1, so that before step S4 in the first embodiment, the coil mounting plate 8 can be driven to compress fluid by controlling the mounting plate driving rod 10 to preform the sheet material 7. Specifically, the mounting plate driving rod 10 can be driven by a telescopic driving member such as a hydraulic cylinder, so that the required electromagnetic forming energy can be reduced through the composite forming of quasi-static hydraulic pressure and high-speed hydraulic pressure, that is, a low-power electromagnetic forming circuit can also be used. Realize the forming of thicker sheet materials, realize the...

Embodiment 3

[0057] like Figure 10-12 As shown in the figure, in this embodiment, the main structure is the same as that of the first and second embodiments, the difference is that the side axial force coil 9 is arranged in the side of the blank holder 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, so that after the electromagnetic forming coil 3 discharges and drives the driving plate 5 to move for a certain distance, the side axial force coil 9 is discharged, thereby generating downward on the driving plate 5. The resultant force can realize the pressure keeping of the parts, prevent the parts from rebounding, and finally realize the high-pre...

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PUM

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Abstract

The invention discloses an electromagnetic forming device and a forming method for forming a fluid impact plate. The electromagnetic forming device includes an electromagnetic forming coil, a die, a driving plate and a blank holder for sealing and pressing the plate on the die. , the drive plate and the inner hole of the blank holder are sealed and slidingly connected, the sheet material, the drive plate and the blank holder form a pressure chamber, the pressure chamber is provided with fluid, and the electromagnetic forming coil is arranged outside the pressure chamber and close to the drive plate set up. The invention adopts the high-speed fluid to drive the micro-forming of the parts, which can take advantage of the advantages of high-speed improvement of the forming limit of the material and reduction of springback. At the same time, the fluid can completely press the sheet against the die cavity of the die to improve the forming accuracy.

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 forming. Background technique [0002] In recent years, with the rapid development of MEMS technology, microchannel components such as microchannel 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, it is mentioned in the document "A high efficient micro-proton exchange membranefuel cell by integrating micro-nano synergical structures": Among various alternative energy sources, fuel cells are considered to be the preferred clean energy 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 fuelcells by rubber p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 恩普赛(襄阳)技术有限公司