Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support

A linear ultrasonic motor, elastic support technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of insufficient utilization of vibration energy and restricted mechanical output capacity and other problems, to achieve the effect of characteristic frequency degeneracy, motor performance improvement, and vibration speed and amplitude improvement

Active Publication Date: 2012-02-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of insufficient vibration energy utilization and restricted mechanical output capacity of the vibrator of the existing ultrasonic motor that is excited by the method o

Method used

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  • Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support
  • Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support
  • Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support

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specific Embodiment approach 1

[0010] Specific implementation mode one: combine Figure 1 to Figure 3 To illustrate this embodiment, the longitudinal-bending composite mode sandwich-type biped linear ultrasonic motor vibrator with elastic support described in this embodiment includes two end caps 1, two pairs of longitudinal vibration piezoelectric ceramic sheets 4, two pairs of bending vibration pressure Electric ceramic sheets 5, studs 6, four mounting seats 3, four thin-walled beams 2, insulating sleeves 7, nine electrode sheets 8 and two friction sheets 9; the end cover 1 is a block whose cross section gradually becomes thinner, The small end face of the end cover 1 is a driving foot, and the center of the large end face of the end cover 1 has a blind hole with an internal thread. Two thin-walled beams 2 are arranged symmetrically on both sides of the large end face of the end cover 1, and the mounting seat 3 is located outside the thin-walled beam 2. Both ends of the stud 6 are threaded, and two pairs ...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and the longitudinal-bending composite mode sandwich-type biped linear ultrasonic motor vibrator with elastic support described in Embodiment 1 is that the bending vibration piezoelectric ceramic sheet 5 and the longitudinal vibration pressure The cross section of the electroceramic sheet 4 is rectangular or circular.

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and the elastically supported longitudinal-bending composite mode sandwich type biped linear ultrasonic motor vibrator described in Embodiment 1 is that the small end surface of the end cover 1 is processed with a rectangular through slot , the friction plate 9 is fixed in the rectangular through groove at the end of the end cover 1 through mechanical connection, so as to avoid the occurrence of the friction plate falling off from the driving foot under the condition of large thrust output.

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Abstract

The invention relates to a longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with an elastic support, and relates to the technical field of piezoelectric ultrasonic motors. The problems that the traditional ultrasonic motor oscillator has insufficient vibrational energy utilization and restricted mechanical output capability are solved. The oscillator comprises two end covers, two pairs of longitudinal vibration piezoelectric ceramic chips, two pairs of bending vibration piezoelectric ceramic chips, a stud, four mounting seats, four thin-walled beams, an insulating sleeve, nine electrode chips and two friction plates, wherein the end cover is a tapered quadrangular prism body with a rectangular section, the small end surface of the end cover is used as a driving foot, the friction plates are fixed in through grooves of the small end surfaces of the end covers, and the end covers are respectively screwed on the two end parts of the studs through threaded holes on the large end surfaces of the end covers, so that the bending vibration piezoelectric ceramic chips and the longitudinal vibration piezoelectric ceramic chips are tightly pressed between the two end covers. The invention can be applied to the field of ultrasonic motor production.

Description

technical field [0001] The invention relates to a longitudinal-bending composite mode sandwich-type two-legged linear ultrasonic motor vibrator with elastic support, belonging to the technical field of piezoelectric ultrasonic motors. Background technique [0002] Piezoelectric ultrasonic motor is a kind of piezoelectric ultrasonic motor that uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibration in the ultrasonic frequency range in the elastic body, and forms a particle motion with a specific trajectory at a specific point or area on the surface of the elastic body, and then passes through the stator, The frictional coupling between the movers converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of low speed and high torque, no need for a speed change mechanism, no electromagnetic interference, fast response, and self-locking when power is off. As a new type of drive, it has Very wide ra...

Claims

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Application Information

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IPC IPC(8): H02N2/04
Inventor 刘英想石胜君陈维山刘军考
Owner HARBIN INST OF TECH
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