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Wear mitigation method of linear ultrasonic motor and linear ultrasonic motor

A technology of linear ultrasonic motor and piezoelectric element, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical element, etc., can solve the problems of low output power and short service life, etc. Achieve the effects of reducing wear, increasing output force, and reducing environmental sensitivity

Inactive Publication Date: 2014-12-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems of low output power and short service life caused by the three-body friction between the stator and the mover of the existing linear ultrasonic motor, and provide a method for slowing down the wear of the linear ultrasonic motor and a linear ultrasonic motor , so as to improve the output power and service life of the linear ultrasonic motor

Method used

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  • Wear mitigation method of linear ultrasonic motor and linear ultrasonic motor
  • Wear mitigation method of linear ultrasonic motor and linear ultrasonic motor

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Embodiment Construction

[0032] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0033] The inventive idea of ​​the present invention is to apply the surface modification technology to the linear ultrasonic motor, and prepare the pit-shaped surface microstructure on the friction end surface of the stator or the mover, thereby reducing the wear caused by the three-body friction, improving the output force of the motor, output power and service life. In order to facilitate the public's understanding, a V-shaped linear ultrasonic motor is taken as an example below to illustrate the technical solution of the present invention.

[0034] The structure of the V-shaped linear ultrasonic motor is as attached figure 1 As shown, it includes a stator and a mover 4, wherein the stator is composed of a clamping piece 1, a rear end cover 3, a compression bolt 6, a piezoelectric ceramic 7, an electrode piece 8, a driving foot 9 and other component...

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Abstract

The invention discloses a wear mitigation method of a linear ultrasonic motor, which belongs to the technical field of ultrasonic motors. In the wear mitigation method of the linear ultrasonic motor, the surface modified technology is used for the linear ultrasonic motor, and a pit-type surface micro-structure is prepared on the friction end face of a stator or a rotator, therefore, wear due to three-body friction is reduced, and the output force, the output power and the service life of the motor are effectively improved. The three-body friction is further reduced by optimizing structural parameters of the pit-type surface micro-structure, and the environmental sensitivity of surface friction is reduced by covering a wear resisting layer on the friction end face of the stator and / or the stator. The invention also discloses the linear ultrasonic motor, and the pit-type surface micro-structure is prepared on the friction end face of the stator or the stator.

Description

technical field [0001] The invention relates to an ultrasonic motor, in particular to a method for slowing down the wear of a linear ultrasonic motor and a linear ultrasonic motor. Background technique [0002] The linear ultrasonic motor is a new type of micro-motor developed and applied rapidly in the 1980s. It includes a stator, a mover and a piezoelectric element. It uses the inverse piezoelectric effect of the piezoelectric element and the ultrasonic vibration of the elastic body, and passes through the stator and the piezoelectric element. The friction between the movers converts the micro-vibration of the elastic body into the macroscopic linear (rotation) motion of the mover, which directly pushes the load. It has the advantages of compact structure, high torque at low speed, fast response, high positioning accuracy and electromagnetic compatibility. It has broad application prospects in aerospace, weapon equipment and precision drive fields. [0003] At present, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 周飞姚志远王谦之王晓楠彭约钧金家楣赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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