Electromagnetic forming device of sheet metal

Abstract

The invention relates to an electromagnetic forming device of a metal sheet. The electromagnetic forming device comprises a permanent seat, a magnetic collection block, an electromagnetic generation device and a mould. The permanent seat is provided with an open groove; the magnetic collection block is positioned inside the open groove of the permanent seat; and the inside of the magnetic collection block is provided with a receiving space which is communicated with the surface of the magnetic collection block through clearance. The electromagnetic generation device is used for generating a magnetic field; and the electromagnetic generation device is positioned inside the receiving space of the magnetic collection block and is not contacted with the magnetic collection block. Clearance is arranged between the mould and the magnetic collection block; and the clearance is used for positioning the metal sheet. As the magnetic collection block is a block body, eddy current in the magnetic collection block is evenly distributed to cause the formed magnetic field in even distribution, thereby generating even forming power on the metal sheet.

Description

technical field [0001] The present invention relates to an electromagnetic forming device for sheet metal, in particular to an electromagnetic forming device for sheet metal including magnetism collecting blocks. Background technique [0002] see figure 1 , showing a schematic cross-sectional view of an electromagnetic forming device for sheet metal disclosed in US Patent No. 7,069,756. The electromagnetic forming device 1 includes a fixed seat 11 , a multi-turn coil 12 and a mold 13 . The fixing seat 11 has a slot 111 and a first surface 112 , and the slot 111 opens on the first surface 112 . The coil 12 is located in the slot 11 and does not contact the fixing base 11 , the coil 12 is used to generate a magnetic field, and is exposed on the first surface 112 of the fixing base 11 . There is a gap between the mold 13 and the fixing base 11 , and the gap is used for placing the metal plate 14 . The mold 13 has a mold cavity 131 , and a surface of the mold cavity 131 has ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the electromagnetic forming device 1 is that, in the coil 12, due to the gap between adjacent coils, the distribution of the magnetic field formed in the space adjacent to the coil is not uniform, so when the electromagnetic forming device 1 is applied When forming a workpiece with a microstructure pattern, corresponding to the weaker magnetic field distribution, there will be a problem that the formation of the microstructure pattern in the local area is not clear

In addition, if you want to process products with different shapes or patterns, you must replace the coils 12 with different forms, which will increase the processing cost

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