Electromagnetically driven electro-hydraulic pipe forming device and method

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...

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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 prone to shrinkage during deep forming, bellows manufacturing and other large deformation processing. Thinness, cracking, and the limitation that the electromagnetic forming process cannot directly act on workpieces of non-benign conductor materials, etc.

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