Production method for neodymium-iron-boron assemblies for motor and fixture used in production method

Abstract

The invention provides a production method for neodymium-iron-boron assemblies for a motor. The production method comprises the following steps that cuboid neodymium-iron-boron magnets, with the samesize, of the required number are taken, the length direction is the magnet magnetizing direction, and after surface treatment, the surfaces constituted by the lengths and the widths are glued; the cuboid neodymium-iron-boron magnets are sequentially bonded into a neodymium-iron-boron magnet bonded body; the cuboid-shaped neodymium-iron-boron magnets in the neodymium-iron-boron magnet bonded body are aligned, and glued joint parts are compacted; after the glued joint parts are solidified, the bonded body is cut into multiple pieces in the direction perpendicular to the bonding faces, and thus the multiple pieces of solidified and glued small-specification magnet assemblies are obtained; and the magnet assemblies are subjected to surface treatment. The invention further provides a fixture comprising a left grating plate, a right grating plate, a front grating plate, a rear grating plate, a fastening block, a fastening nut, a side pressing plate, a side pressing nut and a bottom plate. The resistance, the bonding force and the parallelism degree of the neodymium-iron-boron assemblies can be improved, and vortexes of the magnets are reduced.

Description

technical field [0001] The invention relates to an NdFeB permanent magnet, in particular to a production method of an NdFeB assembly for a motor and a clamp used therefor, which are widely used in multiple fields such as industrial motors, automobile motors, wind power generation, and generators. Background technique [0002] NdFeB permanent magnets have the characteristics of small size, light weight and strong magnetism, and are the magnets with the best performance and price ratio so far. The main raw materials for the production of NdFeB permanent magnet materials are metal neodymium, pure iron, boron-iron alloy and other additives. [0003] NdFeB permanent magnets are widely used in industrial motors, automotive motors, wind power, generators and other fields. In the prior art, the NdFeB permanent magnets are generally fixed to the rotor with glue in a certain order, and under the guarantee of the tooling, the NdFeB permanent magnets are glued to the position of the ma...

AI Technical Summary

Problems solved by technology

How to assemble each magnet in the magnet, but in the assembly process, due to the strong magnetism of the NdFeB permanent magnet, it is very difficult to form it into an ideal state and the rotor as a whole, and the interaction between the same and different poles brings a lot of inconvenience to the operation. , and the magnet cannot ensure that multiple magnets are on one plane during the bonding process, thus affecting the imbalance of the magnetic circuit and generating eddy currents

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