A horizontal axial positioning device for non-contact active and passive hybrid control

Abstract

The invention discloses a non-contact type active / passive hybrid control horizontal axial positioning device, comprising magnetic bearing units and a positioning device base. Each magnetic bearing unit comprises two parts of a stator and a rotor. Each stator comprises an annular coil winding, a hollow cylindrical permanent magnet and a position sensor. Each rotor comprises an out-ring permanent magnet, an inner-ring permanent magnet, a sensor reflecting plate and a magnetism isolating material plate. The two magnet bearing units are symmetrically mounted to two ends of a rotating shaft and are coaxial with the rotating shaft. The hollow cylindrical permanent magnets on the stators of the two magnetic bearing units are fixedly connected with the positioning device base. The magnetism isolating material plates are fixedly connected onto end faces of the rotating shaft. The out-ring permanent magnets and the inner-ring permanent magnets are fixedly connected on the magnetism isolating material plates. The non-contact type active / passive hybrid control horizontal axial positioning device of the invention realizes non-contact axial positioning, and has the advantages of high axial positioning precision, long service lifetime, high axial bearing capacity and low energy consumption.

Description

technical field [0001] The invention relates to an axial positioning device, in particular to a non-contact active and passive hybrid control horizontal axial positioning device. Background technique [0002] In many industrial equipments, the rotating spindle needs to perform high-speed, long-life movement, and there may be a large axial impact force. The traditional axial positioning method is to use a contact positioning device, such as a lubricated rotary bearing, but it rotates at high speed. Under the action of axial and axial impact, fatigue failure is easy to occur, and it is difficult to meet the long-life and high-precision positioning requirements. [0003] The above requirements can be achieved by using a non-contact axial positioning device. The existing structure uses a drive motor or an electromagnet for axial non-contact positioning control, but when there is a large axial impact on the rotating shaft, the above structure will make the motor Excessive load, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-contact active and passive mixed control horizontal axial positioning device, which solves the problem of using the existing structure. When there is a large axial impact on the rotating shaft, the above structure will cause excessive load on the motor. On the one hand It will increase the energy consumption of the drive motor, which is not conducive to energy saving and consumption reduction. On the other hand, it will cause serious heating of the motor, affect the ambient temperature, cause non-contact measurement errors, and then reduce the problem of axial positioning accuracy

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