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Single-incentive linear ultrasonic motor

A linear ultrasonic motor, single-excitation technology, applied in the direction of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem of high manufacturing and assembly requirements, low output power, Difficulties and other problems, to achieve the effect of high energy conversion efficiency, high structural rigidity, and low cost

Inactive Publication Date: 2013-11-27
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing linear ultrasonic motors have disadvantages such as complex structure, low output power, difficult manufacturing, high requirements for manufacturing and assembly, high cost and short life.
These problems restrict their application in industrial production

Method used

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  • Single-incentive linear ultrasonic motor
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Embodiment Construction

[0017] combine figure 1 , 2 As shown, the single-excitation linear ultrasonic motor includes a stator and a mover, and the mover includes a slide bar 8 and a friction layer 9 bonded to the surface of the slide bar 8; the stator includes an ultrasonic vibration transducer, an elliptical vibration mode converter 7 and Friction driving block 10; the outer contour of the ultrasonic vibration transducer is cylindrical, which includes a bolt 1 and a rear cover 2, a piezoelectric ceramic sheet 3, an electrode sheet 4 and a front cover 5 that are sequentially sleeved on the bolt 1. The cover plate 5 is provided with a flange 6 that can be connected with other structural devices, and the rear cover plate 2 and the front cover plate 5 connect the rear cover plate 2, the piezoelectric ceramic sheet 3, the electrode sheet 4 and the front cover plate through bolts 1. 5 are connected and compressed to form the energy conversion part of the single-excitation linear ultrasonic motor, which c...

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Abstract

The invention discloses a single-incentive linear ultrasonic motor. A rotor comprises a sliding strip and a friction layer arranged on the surface of the sliding strip. A stator comprises an ultrasonic vibration transducer, an elliptic vibration mode converter and a friction driving block arranged at the front end of the elliptic vibration mode converter. The ultrasonic vibration transducer comprises a bolt, a rear cover plate, a piezoelectric ceramic piece, an electrode plate and a front cover plate, wherein the bolt is sequentially sleeved with the rear cover plate, the piezoelectric ceramic piece, the electrode plate and the front cover plate, and the rear cover plate and the front cover plate enable the rear cover plate, the piezoelectric ceramic piece, the electrode plate and the front cover plate to be connected and pressed with one another through the bolt. The elliptic vibration mode converter is arranged at the front end of the ultrasonic vibration transducer and is of an inclined wedge-shaped structure, the elliptic vibration mode converter can convert longitudinal ultrasonic vibration generated by the ultrasonic vibration transducer into longitudinal and bent composite ultrasonic elliptic vibration at the tail end of the elliptic vibration mode converter and on the friction driving block, and the rotor is driven to continuously and linearly rotate.

Description

technical field [0001] The invention relates to the field of ultrasonic motors utilizing the inverse piezoelectric effect of piezoelectric ceramics, in particular to a single-excitation 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 is an electromechanical coupling device that uses the inverse piezoelectric effect of piezoelectric materials to convert electrical energy to mechanical energy. Through the friction between the stator and the mover, Convert the micro-vibration of the elastic body into the macroscopic linear (rotational) motion of the mover to directly push the load. Because of its small size, light weight, low speed and high torque, low noise, fast response, high positioning accuracy, no electromagnetic interference and strong environmental adaptability, it has been increasingly widely used in medical, aerospace, robotics, MEMS and other technical field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 殷振李华曹自洋王广勋伯洁李艳刘义生吴永芝吕自强刘娇
Owner SUZHOU UNIV OF SCI & TECH
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