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Electric spindle adopting double supports of electromagnetic bearing and angular contact ball bearing

A technology of angular contact ball bearing and electromagnetic bearing, which is applied in the direction of casing/housing/support, electrical components, electromechanical devices, etc., can solve the problems such as the decrease of the stability of magnetic suspension bearings, and achieve the improvement of rigidity, service life and limit increase. The effect of speed

Inactive Publication Date: 2020-07-17
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

Therefore, once there is a power failure during processing, the stability of the magnetic suspension bearing will decrease

Method used

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  • Electric spindle adopting double supports of electromagnetic bearing and angular contact ball bearing

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Embodiment Construction

[0023] An electric spindle double-supported by electromagnetic bearings and angular contact ball bearings is characterized in that it is based on the external dimension limitation and rigidity requirements of the electric spindle. Axial magnetic bearings (3) are installed on the main shaft in the electric main shaft housing (4), and radial magnetic bearings (2) are symmetrically arranged on both sides of the axial magnetic bearings (3) (that is, two radial magnetic bearings ( 2) arranged symmetrically with respect to the axial magnetic bearing (3);

[0024] The squirrel cage bars of the motor rotor and the main shaft are made into an integral structure, and the squirrel cage bars of the motor rotor correspond to the stator (5) installed in the electric spindle housing in the middle section; (the corresponding position is the squirrel cage bar),

[0025] An angular contact ceramic ball bearing (1) for supporting the main shaft is arranged at both ends of the electric main shaft...

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Abstract

The invention relates to an electric spindle adopting double supports of an electromagnetic bearing and an angular contact ball bearing. An axial magnetic bearing (3) is arranged on the spindle in anelectric spindle shell (4), and radial magnetic bearings (2) are symmetrically arranged on the two sides of the axial magnetic bearing (3). The rigidity of the magnetic suspension bearing at a balanceposition is improved by using the electric spindle structure supported by the electromagnetic bearing and the angular contact ceramic ball bearing so that the magnetic suspension bearing is no longerlimited by the current rigidity.

Description

technical field [0001] The invention belongs to the technical field of electric spindles, and in particular relates to a design of electric spindles double-supported by electromagnetic bearings and angular contact ceramic ball bearings. Background technique [0002] In the industry where the magnetic suspension bearing is used and processed, it is required that the magnetic suspension bearing participate in the processing process to be more and more stable, but the stiffness of the magnetic suspension bearing depends entirely on the magnitude of the current stiffness. Therefore, once there is a power failure during processing, the stability of the magnetic suspension bearing will decrease. Contents of the invention [0003] Purpose of the invention: [0004] The invention provides an electric spindle double-supported by electromagnetic bearings and angular contact ball bearings, aiming to solve the existing problems in the past. [0005] Technical solutions: [0006] An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/09H02K5/173
CPCH02K7/09H02K5/1732
Inventor 孙凤王志鹏徐方超李强金俊杰张晓友
Owner SHENYANG POLYTECHNIC UNIV
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