Electromagnetic shape righting device and shape righting method

Abstract

The invention discloses an electromagnetic shape righting device and a shape righting method, and belong to the technical field of metal forming and manufacturing. The electromagnetic shape righting device comprise a uniform pressure driving coil, a magnetic field shaper, a conductive channel and a mold; the uniform pressure driving coil is arranged in the conductive channel; the conductive channel and a to-be-shaped workpiece form a conductive loop; the magnetic field shaper is arranged between the uniform pressure driving coil and the to-be-shaped workpiece; the uniform pressure driving coilgenerates a pulsed magnetic field around the uniform pressure driving coil through pulse current discharge, and the pulsed magnetic field generates induced eddy current on the surface of the magneticfield shaper; the magnetic field shaper is matched with the uniform pressure driving coil to generate induction current in the conductive loop, and the induction current generates pulse electromagnetic force on a to-be-formed area of the to-be-shaped workpiece; and the to-be-formed area of the to-be-shaped workpiece deforms to the mold under the action of the pulse electromagnetic force. According to the electromagnetic shape righting device, the shape righting or multiple forming processes of the workpiece can be flexibly and accurately regulated and controlled through the optimal design ofthe magnetic field shaper, and the design difficulty and the manufacturing cost of a forming device are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of metal forming and manufacturing, and more specifically relates to an electromagnetic orthopedic device and an orthopedic method. Background technique [0002] The use of lightweight alloy materials provides an effective way to achieve lightweight industrial production in the fields of automobiles, aerospace and other fields. At the same time, due to the poor formability, low plasticity and small elastic modulus of commonly used light alloy materials such as aluminum alloy and titanium alloy at room temperature, the effect of traditional processing technology is not ideal. Studies have shown that high-speed forming can effectively improve the formability of light alloys at room temperature. Therefore, electromagnetic forming technology has been widely used in the processing field of aluminum alloy and other light alloy materials. [0003] In the electromagnetic forming technology of non-axisymmetric plat...

AI Technical Summary

Problems solved by technology

In the electromagnetic forming of the plate, there are the following common problems: (1) In the one-time forming method, the plate may have a certain error between the size of the plate and the mold size due to insufficient discharge energy or the rebound of the material, or it may be caused by the discharge Excessive energy leads to local wrinkling due to the collision between the plate and the mold; (2) In the multiple incremental forming method, the part of the plate has not yet been attached to the mold after the initial forming, and the distance between the local area of ​​the plate and the coil during subsequent forming If it is stretched, the magnetic field intensity generated during the forming process will be significantly reduced, resulting in insufficient electromagnetic force required for forming, which will affect the forming accuracy of the sheet; The required forming process (such as the forming of local complex features) is difficult

For the above problems, the method of using a special shape to drive the coil will increase the difficulty of coil design, resulting in increased manufacturing costs, poor flexibility, and a single application range of the coil.

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