Magnetic aligning device of aeolotropism adhesive bonding or sintered multipolar annular magnetic body

Abstract

The present invention relates to a magnetic field orienting device of an anisotropy bonded magnet or a sintered magnet, in particular to a magnetic field orienting device of the anisotropy bonded magnet or a sintered multi-pole toroidal magnet. The present invention resolves the problems that the magnetic field device of an existing toroidal magnet has complex structure, low oriented magnetic intensity and difficult acquisition of the ideal degree of orientation for anisotropic NdFeB magnetic powder. The device comprises a field coil, two magnetic poles and a cylindrical mould core that is produced with magnetic conducting material, wherein, the pole heads of the two opposite magnetic poles are provided with a homocentric half cylinder respectively, the half cylinder is homocentric with the mould core. The two magnetic poles fold and form a round type cavity, and the mold core is arranged in the center of the round type cavity. The outer surface of the mould core and the inner face of the round type cavity form a toroidal cavity. The device has the advantages of simple structure and novel reasonable design; the magnetic intensity of the toroidal cavity can reach 1.5T to 2.5T in a non-transition area. Moreover, the anisotropic magnetic powder can obtain good degree of orientation. The orienting device can be used to produce multi-pole toroidal magnets.

Description

technical field [0001] The invention relates to a magnetic field orientation device for an anisotropic bonded magnet or a sintered magnet, in particular to a magnetic field orientation device for an anisotropic bonded or sintered multi-pole ring magnet. Background technique [0002] Manufacture of permanent magnet motor must have a ring magnet corresponding to its number of poles. As long as this magnet is made of anisotropic magnetic powder, it must use as strong a magnetic field as possible for the anisotropic magnetic powder during its forming process. Its most easily magnetized axis is oriented according to the required distribution. After forming, the distribution of the most easily magnetized axis is fixed, cured, and then magnetized to obtain the multi-pole ring magnet required by the permanent magnet motor. [0003] Shown in Fig. 1 is a kind of existing radiation magnetic field orientation device, the orientation device of this radiation magnetic field is a pole of t...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the structure of the magnetic field orientation device of the existing ring magnet is complex and the intensity of the orientation magnetic field is low, so it is difficult to obtain the ideal orientation degree for the anisotropic NdFeB magnetic powder, the present invention provides a simple structure and high orientation Magnetic field orientation device for anisotropic bonded or sintered multipole ring magnets

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