Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator

An ultrasonic motor, composite technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the complex structure of piezoelectric vibrator, unfavorable application, longitudinal vibration of motor Modal and torsional vibration modes are difficult to control independently

Inactive Publication Date: 2014-01-15
ZHEJIANG GONGSHANG UNIVERSITY
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many patent applications at home and abroad involving piezoelectric ultrasonic motors and piezoelectric vibrators. The typical structure of piezoelectric ultrasonic motor vibrators is mainly circular, longitudinal torsion composite and other mechanisms. These piezoelectric vibrators have complex structures and cumbersome processing techniques, such as circular Dozens of tooth-like structures are processed on the surface of the piezoelectric vibrator of the traveling-wave ultrasonic wave, and the longitudinal-torsion compound ultrasonic motor is designed with a c...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator
  • Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator
  • Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 , 2 As shown, the vibrator of the ultrasonic motor consists of a bimorph cantilever beam (1), a bimorph cantilever beam (2), a piezoelectric stack-metal composite elastic beam (3), a mass block (4), and a ring contact body ( 5) and base (6) form. The bimorph cantilever beam (1) consists of two piezoelectric ceramics (101, 103) with opposite polarization directions bonded to the upper and lower surfaces of the metal base (102) through epoxy resin to form a sandwich structure. The bimorph cantilever beam (2) consists of two piezoelectric ceramics (201, 203) with opposite polarization directions bonded to the upper and lower surfaces of the metal base (202) through epoxy resin to form a sandwich structure. The left end of the cantilever beam (1) is fixed with the base (6), and the right end is connected with the mass block (4). The right end of the cantilever beam (2) is fixed with the base (6), and the left end is connected with the mass block (4). Th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator, and belongs to the technical field of ultrasonic motor manufacture. The vibrator is formed by bimorph cantilever beams (1, 2), a piezoelectric stacking-metal compound elastic beam (3), a mass block (4), a circuit contactor (5) and a base (6). The bimorph cantilever beams (1, 2) are arranged at the left side and the right side of the mass block (4) respectively. The piezoelectric stacking-metal compound elastic beam (3) is arranged at the lower end of the mass block (4) and is connected with the base (6). The bimorph cantilever beams (1, 2), the piezoelectric stacking-metal compound elastic beam (3) and the mass block (4) form a T-shaped structural in space. The reverse bending vibration of the bimorph cantilever beams (1, 2) is used and the upward and downward longitudinal vibration of the piezoelectric stacking-metal compound elastic beam (3) is used for enabling the mass points on the surface of the circuit contactor (5) to generate elliptic motion tracks, and the twisting drive to a rotor is realized.

Description

technical field [0001] The invention relates to a longitudinal-bending-torsion composite rotary ultrasonic motor piezoelectric vibrator, which can realize precise driving and positioning functions, and belongs to the technical field of ultrasonic motor manufacturing. technical background [0002] The ultrasonic motor uses the inverse piezoelectric effect of piezoelectric ceramics to convert electrical energy into the vibration of the motor stator, and then drives the motor rotor to rotate (or linearly) through the frictional coupling between the motor stator and rotor. Ultrasonic motors have the advantages of compact structure, low speed and high torque, fast response, good control characteristics, no electromagnetic interference, high positioning accuracy, low noise, and can directly drive loads. They are widely used in national defense, military, industry, medical treatment and national production. various fields of life. [0003] There are many patent applications at hom...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02N2/00H02N2/04H02N2/12
Inventor 王光庆展永政
Owner ZHEJIANG GONGSHANG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap