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A magnetic field shielding method and device for machining a permanent magnet rotating shaft

A technology of mechanical processing and permanent magnet rotor, which is applied in the direction of electromechanical devices, shielding electromagnetic fields, manufacturing motor generators, etc., can solve the problems that are not used or not used to solve machining accuracy, so as to avoid adverse effects, improve precision and process the quality of the effect

Active Publication Date: 2019-04-12
ZHUZHOU GOFRONT EQUIP
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Problems solved by technology

[0006] Although the above-mentioned two patents all involve magnetic field shielding, none of the above-mentioned patents uses laminated silicon steel sheets and the gap between the silicon steel sheet layers and the permanent magnet rotor to shield the magnetic field, nor is it used to solve mechanical problems. The problem of machining accuracy

Method used

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  • A magnetic field shielding method and device for machining a permanent magnet rotating shaft
  • A magnetic field shielding method and device for machining a permanent magnet rotating shaft
  • A magnetic field shielding method and device for machining a permanent magnet rotating shaft

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Embodiment 1

[0037] Such as figure 1 , image 3 and Figure 4 As shown, the magnetic field shielding device 2 is set on the permanent magnet rotor 1 to shield the magnetic field generated by the permanent magnets 12 in the permanent magnet rotor 1 . The permanent magnet rotor 1 includes: a permanent magnet rotating shaft 11 , a permanent magnet 12 and an iron core 13 . The magnetic field shielding device 2 includes: a shielding tube 23 , a silicon steel sheet layer 22 , a shielding layer protective cover 21 , a screw 25 , a left end cap 26 and a right end cap 27 . Wherein the left end cap 26 and the right end cap 27 are arranged on the axial direction of the permanent magnet rotating shaft 11, and the shielding cylinder 23, the silicon steel sheet layer 22 and the shielding layer protective sleeve 21 are arranged on the circumferential direction of the permanent magnet rotating shaft 11 from outside to inside direction.

[0038] Such as figure 1 , figure 2 and image 3 As shown, th...

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Abstract

The invention relates to a magnetic field shielding method and device for permanent magnet spindle machining. A permanent magnet rotor comprises a permanent magnet spindle, a permanent magnet and an iron core, the permanent magnet and the iron core are sleeved on the permanent magnet spindle together, a silicon steel sheet layer is sleeved on the outer side of the permanent magnet rotor, a gap is left between the silicon steel sheet layer and the permanent magnet rotor, and a magnetic induction line emanated from the permanent magnet rotor forms a closed loop circuit among the permanent magnet rotor, the gap and the silicon steel sheet layer so as to shield a magnetic field generated in the permanent magnet rotor. The adoption of the silicon steel sheet layer sleeved on the outer side of the permanent magnet rotor and the gap left between the silicon steel sheet layer and the permanent magnet rotor can attenuate the magnetic induction intensity outside the silicon steel sheet layer by a large margin, accordingly, the magnetic field generated by the rotor can be shielded, and the processing accuracy and quality of the permanent magnet spindle and the accuracy of three-coordinate loss measurement are improved.

Description

technical field [0001] The invention relates to a magnetic field shielding method and device, in particular to a method and device for shielding the magnetic field by preventing the magnetic field from affecting the processing of a permanent magnet rotating shaft. Background technique [0002] The processing of the permanent magnet shaft is to install the permanent magnet in place after the rough machining of the permanent magnet shaft is completed. In order to ensure the mechanical accuracy of the permanent magnet shaft, it is necessary to grind the permanent magnet shaft and send it to three-coordinate measurement. In the process of grinding and three-coordinate measurement, the permanent magnet rotor has been magnetized. When the machine tool grinds the permanent magnet shaft, the permanent magnet rotor will generate a magnetic force on the machine tool, which will affect the grinding process of the permanent magnet shaft by the machine tool. Precision and quality of pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/03H02K11/01
CPCH02K15/03
Inventor 张锦何业建李周林李庆锋晏斌杜长顺
Owner ZHUZHOU GOFRONT EQUIP
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