Magnetic-gas bearing and method for making compliant foil

Abstract

The mixed magnetic air journal bearing is mixed bearing of active magnetically suspension bearing and dynamic pressure air journal bearing, and includes active magnetically suspension radial bearing, elastic foil embedded between magnetic poles of the magnetically suspension radial bearing, and locking mechanism comprising locking wedge block, inclined blocks, bearing block, gag, screw and stop washer. The elastic foil with pre-wedged angle, has one end held onto the magnetic pole and has higher static and dynamic performance than rigid bearing. Owing to the magnetic force to suspend the rotor in the balance position and fluid force to deform the foil for coupling the interval of the air film, the rotor-bearing reaches ultimate stable balance. The bearing has simple structure, has the advantages of both active magnetically suspension bearing and foil bearing, excellent damping characteristic and improved structure rigidity and dynamic characteristic.

Description

1. Technical field [0001] The magnetic gas hybrid bearing and the elastic foil manufacturing method of the invention belong to the magnetic suspension bearing and the dynamic pressure gas bearing in the mechanical field. 2. Background technology [0002] Magnetic suspension bearing is a new type of high-performance bearing that uses magnetic force to suspend the rotor in space, so that there is no mechanical friction support between the rotor and the stator. The most commonly used type at present is Active Magnetic Bearing (AMB). Gas bearing is a fluid film lubricated bearing that uses gas as the lubricating medium. Even if a gas film is formed between the shaft and the bearing, the moving surface and the static surface avoid direct contact. The method used by the gas bearing is to use the viscosity of the gas to improve the bearing. Pressure in the gap, thereby causing the object to float. The dynamic pressure gas bearing pair has two relatively moving surfaces and a wedg...

AI Technical Summary

Problems solved by technology

Although the magnetic hybrid bearing has been studied at home and abroad, its biggest disadvantage is that the foil gas bearing occupies a large axial space, which reduces the rotor dynamic performance, and its application research is still in the exploratory stage.

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