Method of making cylindrical and spherical permanent magnet stru

Details Method of making cylindrical and spherical permanent magnet stru Method of making cylindrical and spherical permanent magnet stru

1993-05-26

1994-08-16

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29415, 29416, H01F 4102

Patent

active

053374720

ABSTRACT:
Methods of manufacturing rings, cylinders, hemispheres and spheres having a elatively strong central working field. The manufacture of complex magnetic structures is greatly simplified by a method of cutting wedge shaped portions radially into sections, rotating the bonded sections about a radial axis prior to magnetization, magnetizing the sections in a uniform magnetic field, rotating the magnetic sections into their original positions thereby forming the resulting desired permanent magnet structure. In another embodiment, another method of making a hemispherical or spherical magnet structure using rings ground into wedge shaped portions and reassembled is disclosed. In another embodiment, a method of manufacturing a cylindrical quadrupole is disclosed whereby sections of a magic ring are removed and collapsed to form half a cylinder and combined with an analogously collapsed magic ring forming a second half cylinder and combined to form a quadrupole. The methods of the present invention greatly simplify and facilitate the manufacture of complex permanent magnet structures incorporating the so-called "magic" ring principles in the fabrication of a permanent magnet structure having relatively high magnetic fields within a central working space.

REFERENCES:
patent: 3398450 (1968-08-01), Subovici
patent: 4835506 (1989-05-01), Leupold
patent: 5089817 (1992-02-01), Santos et al.

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