Electromagnetic attraction forming device and method

Abstract

The invention relates to an electromagnetic attraction forming device and method. The device comprises a discharge power supply system, to-be-formed metal pieces, a driver board and female dies. The discharge power supply system is connected with the to-be-formed metal pieces and the driver board through wires correspondingly. The female dies are arranged between the to-be-formed metal pieces andthe driver board. One sides of the contour shapes of female die formed workpieces are close to the to-be-formed metal pieces. According to the electromagnetic attraction forming device and method, thestructure and control requirements are simple, active control over forming is achieved by directly applying electric current on the driver board and the to-be-formed metal pieces, traditional electromagnetic forming repulsion can be converted into attraction, and no wound discharge coil structure needs to be designed, so that the problems that when coils are manufactured during traditional electromagnetic forming, the coil structure is complex, the manufacturing cost is high, and the service life is short are solved.

Description

technical field [0001] The invention belongs to the technical field of metal forming and manufacturing, and in particular relates to an electromagnetic attraction forming device and method. Background technique [0002] Electromagnetic forming is a method of converting electric energy into magnetic field energy to form metal sheets. The traditional electromagnetic forming process generally uses coils to generate electromagnetic repulsion to the metal sheet for forming. For example, the electromagnetic forming introduced by the Chinese Patent Publication No. CN103817197A The device, when forming, passes current through the coil, and the workpiece is affected by the magnetic field to generate eddy current, and the repulsive force generated between the coil and the workpiece due to the electromagnetic field pushes the workpiece to move to the mold so that the workpiece is close to the mold, so as to form the workpiece. The disadvantage of this electromagnetic forming device usi...

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Problems solved by technology

[0003] The object of the present invention is to provide an electromagnetic attraction forming device and method, and propose a method of converting traditional electromagnetic forming repulsive force into an attractive method to form metal parts, so that the forming control requirements of the entire device are simple, and the device does not need to be designed around Discharge coil structure can be used to solve the problems caused by coil production in traditional electromagnetic forming, such as complex coil structure, high production cost, and low service life; and because the current applied to the driving plate and the metal forming part can be actively controlled , can form low-conductivity materials, realize active and flexible control of the forming process, and broaden the forming process window

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