High speed electric spindle supported by all-permanent magnet bearing

A technology of high-speed electric spindle and permanent magnetic bearing, which is applied in the direction of casing/housing/support, magnetic attraction or thrust holding device, electrical components, etc., and can solve the problems that cannot be widely applied, complex system, high cost, etc. , to achieve the effect of eliminating the need for lubrication and sealing devices, strong environmental adaptability, and low heat generation
CN102437798AInactive Publication Date: 2012-05-02SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2012-05-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a high speed electric spindle supported by an all-permanent magnet bearing. The high speed electric spindle comprises a motor stator, a motor rotor, a rotating shaft, a housing, a front cover, a front bearing pedestal, a rear bearing pedestal, a rear cover and a bearing system. The bearing system is characterized in that: two radial permanent magnet bearings are used as radial support bearings; one axial bidirectional permanent magnet thrust bearing is used an axial support bearing; the two radial permanent magnet bearings respectively include two moving magnet rings and two static magnet rings as well as are installed at two sides of the motor rotator; and the bidirectional permanent magnet thrust bearing is formed by two static magnet rings and one moving magnet ring as well as is installed at one end of the rotating shaft. According to the high speed electric spindle supported by an all-permanent magnet bearing in the invention, an all-permanent magnet bearing that is free of friction and wearing as well as does not need auxiliary support and external control is utilized as a support part of an electric spindle, so that an axial load and a radial load are beared; and therefore, functions of complete support and stable suspension for a rotating bearing of the electric spindle are realized.
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Description

technical field

[0001] The invention relates to a high-speed electric spindle supported by full permanent magnetic bearings in the field of electromechanical engineering. Background technique

[0002] As a technology with great development potential and prospects, maglev technology has attracted much attention at home and abroad, and its benefits are obvious to all. As the core functional component of modern high-speed machining, the electric spindle is a function of integrating the drive motor to realize the mechatronics of functions such as the motor and the spindle. At present, the electric spindles supported by magnetic bearings mainly include electric spindles supported by electromagnetic bearings. Although electromagnetic bearings have the characteristics of no friction and wear and controllability, due to the need for an external control system, the system is complicated, large in size, and high in cost. It is mainly in the stage of laboratory research and cannot...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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