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Method for overcoming magnetic declination of permanent magnet and device thereof

A magnetic declination and permanent magnet technology, applied in permanent magnets, inductors/transformers/magnet manufacturing, electrical components, etc., can solve the problems of not considering the magnetic declination of permanent magnet materials, and cannot meet the high-precision AC servo motor, etc., to achieve Satisfy the effect of high-precision motor and eliminate cogging effect

Active Publication Date: 2011-05-04
PHASE MOTION CONTROL NINGBO
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Problems solved by technology

[0003] The present invention mainly solves the problem that the original processing technology is only mechanically processing the sintered permanent magnet material in size without considering the magnetic declination angle of the permanent magnet material, and then it is used in a high-precision AC servo motor, which cannot meet the requirements of high-precision AC servo motors. The technical problem of the requirements of the servo motor; provide a method of machining the sintered permanent magnet material under the premise of considering the magnetic declination angle, so that the obtained permanent magnet meets the requirements of the high-precision AC servo motor. Method and device for overcoming magnetic declination of permanent magnet

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  • Method for overcoming magnetic declination of permanent magnet and device thereof
  • Method for overcoming magnetic declination of permanent magnet and device thereof
  • Method for overcoming magnetic declination of permanent magnet and device thereof

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Embodiment 1

[0019] Embodiment 1: the method for overcoming the magnetic declination of the permanent magnet of the present embodiment comprises the following steps:

[0020] a. First judge the magnetic field orientation of the magnetic material sintered after dry pressing magnetic field orientation forming, and determine the two magnetic field orientation surfaces of the magnetic material;

[0021] b. Carry out mechanical processing on the two magnetic field orientation planes, make the magnetic field orientation planes perpendicular to the magnetic force lines of the magnetic field orientation, and strive to keep consistent with the original dry pressure magnetic field;

[0022] c. Based on the two machined magnetic field orientation surfaces, firstly machine two adjacent surfaces of the remaining four surfaces of the magnetic material to ensure that the relative angular scale is reached; The other two adjacent faces are machined to ensure that the relative angular scale is achieved;

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Abstract

The invention relates to a method for overcoming magnetic declination of a permanent magnet and a device thereof; wherein, the method comprises the steps as follows: two magnetic field orientation surfaces of the magnetic material are mechanically processed so that the magnetic field orientation surfaces are vertical to the magnetic field orientation magnetic force line; subsequently, the other four surfaces are mechanically processed so that all surfaces achieve the relative corner rule precision; the device comprises a trough which is formed by the connection of four planar plates; wherein,two planar plates are vertical to each other to form an L-shaped frame body; the other two planar plates are connected at the front end and the rear end of the L-shaped frame body and respectively are vertical to the two planar plates which compose the L-shaped frame body; a pressing part passes through the planar plate at the front end of the L-shaped frame body and is connected with the planar plate at the front end of the L-shaped frame body by threads. The device and the method lead the magnetic deflection of the permanent magnet gained after processing to be almost equal to zero, eliminate the slot effect of motor and meet the requirement of high-precision motor.

Description

technical field [0001] The invention belongs to the field of motor manufacturing, and in particular relates to a method and a device for overcoming the magnetic declination of a permanent magnet. Background technique [0002] Generally, the permanent magnets used in motors are high-performance permanent magnet materials, which are sintered after dry-pressed magnetic field orientation molding. The sintered permanent magnets all have magnetic field orientation surfaces. The high-precision AC servo motor also has high requirements for the permanent magnet materials used. Not only the magnetic properties and magnetic field strength must meet the requirements, but also the magnetic declination angle is also required. The higher the precision of the motor, the smaller the magnetic declination of the permanent magnets used. The original processing technology is only to machine the size of the sintered permanent magnet material without considering the magnetic declination angle of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/02H01F41/02
Inventor 董瑜堂吴乾军徐小英任文杰
Owner PHASE MOTION CONTROL NINGBO
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