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Single-incentive linear ultrasonic motor

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

Inactive Publication Date: 2013-07-10
江门市荣立电机有限公司
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] to combine figure 1 As shown, a single-excitation linear ultrasonic motor includes a stator and a mover, 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 6 and a friction drive block 10; the ultrasonic vibration transducer 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, and the front cover 5 and the bolt 1 Press and fix the rear cover 2, piezoelectric ceramic sheet 3, electrode sheet 4 and front cover 5 through screw connection. The single-excitation linear ultrasonic motor has only one set of longitudinal vibration piezoelectric ceramic sheets 3, the diameter of the piezoelectric ceramic transducer section is 30 mm, the material of the piezoelectric ceramic sheets 3 is PZT-8, and the size is: Ф30mm×Ф15mm×5mm , the num...

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Abstract

The invention discloses a single-incentive linear ultrasonic motor, wherein a rotor comprises a sliding bar and a friction layer arranged on the surface of the sliding bar; and a stator comprises an ultrasonic-vibration energy converter, an elliptical-vibration mode converter and a friction driving block arranged at the front end of the elliptical-vibration mode converter. The ultrasonic-vibration energy converter comprises a bolt, a rear cover plate, a piezoelectric ceramic slice, an electrode slice and a front cover plate, wherein the rear cover plate, the piezoelectric ceramic slice, the electrode slice and the front cover plate are sleeved on the bolt sequentially; the front cover plate is in thread connection with the bolt; the elliptical-vibration mode converter is arranged at the front end of the front cover plate and is in the shape of a cylinder as a whole; and three rectangular notches in misplacement distribution are formed on the upper side and the lower side of the elliptical-vibration mode converter. Therefore, the longitudinal ultrasonic vibration generated by the ultrasonic-vibration energy converter can be converted into the elliptical vibration at the tail end of the elliptical-vibration mode converter as well as the elliptical vibration of the friction driving block; and the rotor is driven to perform continuous linear motion.

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 殷振李华曹自洋李艳刘义生吴永芝任坤陈玉荣刘娇吕自强
Owner 江门市荣立电机有限公司
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