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Ultrasonic thrust air bearing with curve grooves

A technology of air bearings and curved grooves, which is applied to bearings, shafts, bearings, mechanical equipment, etc., to achieve the effects of improving bearing capacity and stability, improving elastic force and damping force, and enhancing dynamic pressure characteristics

Active Publication Date: 2015-06-03
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After decades of development, air bearings have various types and greatly improved performance, but most bearings have not yet combined the extrusion effect and the dynamic pressure effect well

Method used

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  • Ultrasonic thrust air bearing with curve grooves
  • Ultrasonic thrust air bearing with curve grooves
  • Ultrasonic thrust air bearing with curve grooves

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. However, it can be understood that the following specific embodiments are only preferred technical solutions of the present invention, and should not be construed as limiting the present invention.

[0022] Such as figure 1 As shown, an ultrasonic curved groove thrust air bearing includes a rotor 1, a transducer 2, a piezoelectric ceramic sheet, a thrust disk 5, a rotating disk 6, a power supply 7, a PID control system 8 and a displacement sensor 9, and the piezoelectric The ceramic sheet is provided with a positive electrode 3 of a piezoelectric ceramic sheet and a negative electrode 4 of a piezoelectric ceramic sheet, the positive electrode 3 of the piezoelectric ceramic sheet is connected to the positive electrode of the power supply 7, and the negative electrode 3 of the piezoelectric ceramic sheet is connected to the negative elect...

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PUM

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Abstract

The invention discloses an ultrasonic grooved thrust air bearing. The bearing comprises a rotator, a transducer, a piezoelectric ceramic piece, a thrust disc, a rotating disc, a power supply, a PID control system and a displacement sensor, wherein the piezoelectric ceramic piece is provided with a piezoelectric ceramic piece anode and a piezoelectric ceramic piece cathode, the piezoelectric ceramic piece anode is connected with a power supply anode, the piezoelectric ceramic piece cathode is connected with a power supply cathode, the power supply is connected with the PID control system, the PID control system is connected with the displacement sensor, the piezoelectric ceramic piece is adhered to the middle of the lower end surface of the transducer, and the thrust disc and the transducer are connected in a fastened manner through bolts. The bearing provided by the invention has the benefits that the structural advantages of an aerodynamic bearing and an ultrasonic bearing are combined, so that the squeeze effect and the aerodynamic effect are combined to a certain extent, the squeeze effect of the ultrasonic bearing is adjusted in a real-time manner, the elastic force and damping force of a gas film are remarkably enlarged, and the bearing capacity and stability of the bearing are improved.

Description

technical field [0001] The invention relates to the fields of air bearing suspension, lubrication technology and PID feedback adjustment, in particular to an ultrasonic curved groove thrust air bearing. Background technique [0002] The principle of the dynamic pressure air bearing is that the air with a certain viscosity is brought into the convergence space by the high-speed rotating journal, and a dynamic pressure air film is formed between it and the working surface of the journal, so that the two working surfaces are separated from each other. The dynamic pressure air bearing has the advantages of low friction power consumption, large bearing capacity, stable operation and high reliability. The dynamic pressure thrust bearing is a kind of dynamic pressure gas bearing. In order to further improve the dynamic pressure effect, some convergent unequal height grooves or step structures are usually processed on the working surface along the direction of the sliding velocity. ...

Claims

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Application Information

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IPC IPC(8): F16C32/06
Inventor 冯凯杨曼程苗苗
Owner HUNAN UNIV
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