Air magnetic bearing motor

Abstract

The invention discloses an air magnetic bearing motor, which comprises a frame, a shell and a stator. A cage rotor is arranged in the shell. A rotating shaft of the rotor is supported by air bearings arranged at the two ends of the frame. The air bearing has an annular structure. A compressed air diversion trench is formed in the air bearing, and has an inlet connected with a compressed air inletpipe. A plurality of throttles are arranged on the diversion trench. An outlet of the diversion trench is an air gap between the air bearing and a shaft sleeve of the rotating shaft. A side plate is arranged at one end of the rotating shaft of the rotor. Two annular permanent magnets are arranged on the side plate and an air bearing mounting seat respectively. The permanent magnets are opposite to each other, and have concentric end faces and magnetic poles with the same polarity. The bearings are contactless with a bearing bush, thereby realizing frictionless high-speed rotation. The air magnetic bearing motor has the characteristics of low bearing temperature in the high-speed rotation, micro vibration and long service life, can eliminate axial movement produced by the bearings and the rotating shaft of the rotor by the regulation of steel balls and the magnets, and can be used as a high-accuracy and high-rotating speed rotating power source.

Description

technical field [0001] The invention relates to a motor, in particular to an air magnetic bearing motor. Background technique [0002] The processing of high-precision and high-gloss parts requires relatively high-speed rotation of cutting tools and workpieces without vibration or micro-vibration. Traditional motors equipped with rolling or sliding bearings cannot meet the above requirements. Contents of the invention [0003] The purpose of the present invention is to provide an air magnetic bearing motor, which has the characteristics of low bearing temperature, slight vibration and long service life under high-speed rotation. The axial movement of the rotor shaft of the bearing can be eliminated through the regulation of the steel ball and the magnet. This makes the motor usable as a high-precision and high-rotational rotational power source. [0004] The technical solution adopted to achieve the above purpose includes a body shell and a stator, and a squirrel-cage ro...

AI Technical Summary

Problems solved by technology

[0002] The processing of high-precision and high-gloss parts requires relatively high-speed rotation between the cutting tool and the workpiece without vibration or micro-vibration. Traditional motors equipped with rolling or sliding bearings cannot meet the above requirements.

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