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Clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator

An ultrasonic motor, clamping technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of limited mechanical output capacity, low tensile strength, etc. problems, to achieve the effect of flexible design, stable performance, and improved mechanical output capability

Active Publication Date: 2014-09-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of low tensile strength of the ceramic material of the existing patch-type modal composite ultrasonic motor vibrator and the limited mechanical output capacity caused by the strength and fatigue life of the glue layer, and now provides a clamping quadruped Longitudinal bending composite ultrasonic motor vibrator

Method used

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  • Clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator
  • Clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator
  • Clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator

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specific Embodiment approach 1

[0026] Specific embodiment one: reference figure 1 with image 3 Detailed description of this embodiment, the clamping type quadruped longitudinal-bending composite ultrasonic motor vibrator described in this embodiment includes: three piezoelectric ceramic sheets 1, two rigid plates 2 and 4 electrode sheets 3;

[0027] The three piezoelectric ceramic sheets 1 are all arranged in parallel with the two rigid plates 2 and are all located between the two rigid plates 2;

[0028] One electrode piece is respectively fixed between two adjacent piezoelectric ceramic pieces and between the piezoelectric ceramic piece and the hard plate;

[0029] The three piezoelectric ceramic sheets 1 are all polarized along the thickness direction, and the polarization directions of two adjacent piezoelectric ceramic sheets are opposite.

[0030] When the clamp-type quadruped longitudinal-bending composite ultrasonic motor vibrator described in this embodiment is in practical application, two electrode plate...

specific Embodiment approach 2

[0031] Specific embodiment two: reference figure 2 with image 3 Detailed description of this embodiment, the clamping type quadruped longitudinal-bending composite ultrasonic motor vibrator described in this embodiment includes: three piezoelectric ceramic sheets 1, two hard plates 2 and 6 electrode sheets 3;

[0032] The three piezoelectric ceramic sheets 1 are all arranged in parallel with the two rigid plates 2 and are all located between the two rigid plates 2;

[0033] Two electrode plates are fixed between two adjacent piezoelectric ceramic plates, and one electrode plate is fixed between the piezoelectric ceramic plates and the rigid plate;

[0034] The three piezoelectric ceramic sheets 1 are all polarized along the thickness direction, and the polarization directions of two adjacent piezoelectric ceramic sheets are opposite.

[0035] When the clamp-type quadruped longitudinal-bending composite ultrasonic motor vibrator described in this embodiment is in practical application...

specific Embodiment approach 3

[0038] Specific embodiment three: this embodiment is a further description of the clamp-type quadruped longitudinal-bending composite ultrasonic motor vibrator described in specific embodiment one or two. In this embodiment, the lengths of the two rigid plates 2 are both greater than The length of the piezoelectric ceramic sheet, and the four end faces of the two rigid plates 2 are the driving feet of the clamped quadruped longitudinal-bending composite ultrasonic motor vibrator.

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Abstract

The invention relates to a clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator, belongs to the technical field of piezoelectric ultrasonic motors, and aims at solving the problems that the tensile strength of a ceramic material is low, and the mechanical output capacity is limited caused by the strength and the fatigue life of a rubber layer in an existing SMD-type modal composite ultrasonic motor vibrator. The clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator is in an interlayer structure so that piezoelectric ceramic pieces are always in a pressed state, and under the state, high-strength voltage is adopted for carrying out excitation, so that the mechanical output capacity is improved; meanwhile, the three piezoelectric ceramic pieces polarized along the thickness direction are adopted, so that the excitation for longitudinal-bending composite vibration of the vibrator is realized; hard boards and the ceramic pieces adopted are in regular shapes, so that processing and assembling technologies of the ultrasonic motor vibrator are greatly simplified. The clamping-type four-feet longitudinal-bending composite ultrasonic motor vibrator is used in the manufacturing field of ultrasonic motors.

Description

Technical field [0001] The invention belongs to the technical field of piezoelectric ultrasonic motors. Background technique [0002] The piezoelectric ultrasonic motor uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibrations in the ultrasonic frequency range in the elastic body, and form a particle movement with a specific track at a specific point or a specific area on the surface of the elastic body, and then pass through the stator, The frictional coupling between the rotors converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of low speed and large torque, no transmission mechanism, no electromagnetic interference, fast response speed and self-locking when power off. As a piezoelectric drive, it has the advantages Very wide application. [0003] Due to the simplicity of the excitation principle and the simplicity of the theoretical analysis method, most piezoelectric ultrasonic motors curre...

Claims

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Application Information

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IPC IPC(8): H02N2/04
Inventor 刘英想杨小辉陈维山刘军考石胜君
Owner HARBIN INST OF TECH