Electromagnetically driven electro-hydraulic pipe forming device and method

An electromagnetic drive, pipe fitting technology, applied in the field of metal forming and manufacturing, can solve the problems of thinning and cracking of workpieces

Active Publication Date: 2020-10-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defects and improvement needs of the prior art, the present invention provides an electromagnetic drive-electro-hydraulic pipe fitting forming device and method, the purpose of which is to solve the problem that the workpiece is pr

Method used

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  • Electromagnetically driven electro-hydraulic pipe forming device and method

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Embodiment 1

[0037] Such as image 3 As shown, it is a structural schematic diagram of the electromagnetic drive-electro-hydraulic pipe fitting forming device provided by Embodiment 1 of the present invention. The device includes: a power supply module, a forming module, a booster module, a forming mold, and a fixing unit.

[0038] Among them, the power supply module includes a power supply 1-1 for boosting and a power supply 1-2 for forming; the forming module includes a metal electrode 2-1 and a metal wire 2-2; the boosting module includes a boosting coil 3-1 and a driving board 3-2. 2. The forming mold includes a mold cavity 4-1, an air vent 4-2, and a sealing plug 4-3; the fixing unit includes a fixing frame 5-1 and a telescopic gasket ring 5-2.

[0039] Specifically, the power module includes a power supply 1-1 for boosting and a power supply 1-2 for forming. The power supply 1-2 for forming is used to provide pulse current for the metal wire 2-2; the metal wire 2-2 is located in the...

Embodiment 2

[0063] Such as Figure 5 As shown, the forming die in the second embodiment provided by the present invention is different from the first embodiment; the way of using multiple metal wires is different from the first embodiment; other structures are the same as the first embodiment.

[0064] In this embodiment, the forming mold is corrugated for forming bellows. The bellows is characterized in that there are multiple forming centers in the forming area, and the efficiency of a single metal wire explosion is low; at the same time, it is difficult to adopt multiple Compound forming with secondary axial push.

[0065] This embodiment provides the device and method of the forming embodiment of the electro-hydraulic and electromagnetic combination of the bellows in the state of multiple metal wires.

[0066] Its device and method are basically the same as Embodiment 1, the difference is:

[0067] (1) The number of metal wires 2-2 is the same as the number of mold corrugations, and...

Embodiment 3

[0070] Such as Figure 6 As shown, when only one end of the workpiece to be formed needs to be boosted, a single-end loading axial boosting device can be used; the specific steps are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses an electromagnetically driven-electro-hydraulic pipe forming device and method. The device comprises a power supply module, a forming module, a boosting module, a forming moldand a fixing unit; a power supply 1-2 for forming is triggered to make a metal wire 2-2 chemically react with liquid in a chamber 6 to produce an explosive shock wave to drive a workpiece to be formedto generate plastic deformation, and is formed under the restraint action of a mold cavity 4-1. In addition, a power supply 1-1 for boosting triggers a boosting coil 3-1 to generate induced eddy currents and a time-varying magnetic field on a drive plate 3-2, through timing sequence cooperation, axial boosting electromagnetic force is provided for the whole forming process, and meanwhile, the drive plate 3-2 transmits the electromagnetic action force to the end of the workpiece to be formed 7, thereby increasing the axial motion tendency of a pipe and improving the fluidity of a material; andtherefore, under the synergistic effect of the high-speed shock wave load and the axial boosting force of the drive plate, the plastic deformation processing of the workpiece to-be-formed 7 can be realized, and the forming capability and the mold attaching performance of the workpiece can be effectively improved.

Description

technical field [0001] The invention belongs to the field of metal forming and manufacturing, and more specifically relates to an electromagnetic drive-electro-hydraulic pipe fitting forming device and method. Background technique [0002] Metal is the most common processing material, and light alloys such as magnesium alloy and aluminum alloy are an important way to achieve lightweight, energy saving and emission reduction, and are widely used in the aerospace and automotive industries. In the processing and manufacturing of deep forming of pipe fittings and bellows manufacturing, due to the large deformation of the workpiece, local excessive thinning or even tearing will occur during the processing, so it has always been a difficult problem in the processing and manufacturing industry. Patent document CN103406418B discloses a radial and axial two-way loading type electromagnetic forming method and device for metal pipe fittings. During the radial bulging process of metal p...

Claims

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Application Information

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IPC IPC(8): B21D26/06B21D26/14
CPCB21D26/06B21D26/14
Inventor 李亮张毅曹全梁李潇翔欧阳少威韩小涛赖智鹏
Owner HUAZHONG UNIV OF SCI & TECH
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