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Buckling composite modal sandwich type double-foot rotating ultrasonic motor vibrator with elastic supports

An ultrasonic motor, elastic support technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. problem, to achieve the effect of eigenfrequency degeneracy, performance improvement, and vibration speed and amplitude improvement

Inactive Publication Date: 2012-02-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 of pasting piezoelectric ceramic sheets with metal elastic bodies, the invention provides a longitudinal bending machine with elastic support. Composite Mode Sandwich Biped Rotary Ultrasonic Motor Vibrator

Method used

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  • Buckling composite modal sandwich type double-foot rotating ultrasonic motor vibrator with elastic supports
  • Buckling composite modal sandwich type double-foot rotating ultrasonic motor vibrator with elastic supports
  • Buckling composite modal sandwich type double-foot rotating ultrasonic motor vibrator with elastic supports

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 with figure 2 To illustrate this embodiment, the elastically supported longitudinal-bending composite mode sandwich-type biped rotary ultrasonic motor vibrator in this embodiment has a left-right symmetrical structure, and is characterized in that the ultrasonic motor vibrator includes two horns 1, two A pair of bending piezoelectric ceramic sheets 2, two pairs of longitudinal vibration piezoelectric ceramic sheets 3, a neutral plate 4, two mounting seats 5, two thin-walled beams 6, two insulating sleeves 7, eight electrode sheets 8 and two friction sheet 9; the horn 1 is a block whose cross-section gradually becomes thinner, the small end face of the horn 1 is a driving foot, and a friction plate 9 is fixed on each driving foot; the center of the large end face of the horn 1 There is a blind hole with an internal thread; both ends of the center of the neutral plate 4 are fixed with studs 4-1, and each stud 4-1 is cov...

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and the elastically supported longitudinal-bending composite mode sandwich biped rotary ultrasonic motor vibrator described in Embodiment 1 is that the bending vibration piezoelectric ceramic sheet 2 and the longitudinal vibration pressure The cross section of the electroceramic sheet 3 is rectangular or circular.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and the elastically supported longitudinal-bending composite mode sandwich biped rotary ultrasonic motor vibrator described in Embodiment 1 is that the neutral plate 4, stud 4-1, The thin-walled beam 6 and the mounting seat 5 are integrated.

[0018] Since the vibrator of the rotary ultrasonic motor described in the present invention has a left-right symmetrical structure, that is, it is symmetrical to the left and right of the symmetrical plane of the neutral plate 4, and the thin-walled beam 6 is located on the symmetrical plane, the thin-walled beam 6 can realize the effects of elastic support and vibration isolation, The influence of the connection between the vibrator and other components on the bending vibration mode of the vibrator can be minimized.

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Abstract

The invention discloses a buckling composite modal sandwich type double-foot rotating ultrasonic motor vibrator with elastic supports, and relates to the technical field of piezoelectric ultrasonic motors. The vibrator solves the problem that the vibration energy is utilized insufficiently and the mechanical output capacity is restricted in the conventional ultrasonic motor vibrator. The ultrasonic motor vibrator comprises two amplitude transformation rods, two pairs of flexural vibration piezoelectric ceramic chips, two pairs of longitudinal vibration piezoelectric ceramic chips, a neutral plate, two mounting seats, two thin-wall beams, two insulating bushes, eight electrode plates and two friction plates; the amplitude transformation rods are blocks, the sections of which are rectangular and gradually thinned; the small end faces of the amplitude transformation rods are provided with driving feet; the friction plates are fixed in through slots of the small end faces of the amplitude transformation rods; two ends of the neutral plate are provided with studs; and the amplitude transformation rods are respectively screwed to the ends of the studs through thread holes of the big end faces, so that the flexural vibration piezoelectric ceramic chips and the longitudinal vibration piezoelectric ceramic chips are compacted between the amplitude transformation rods and the neutral plate. The vibrator is suitable for the conventional rotating ultrasonic motor.

Description

technical field [0001] The invention relates to a longitudinal-bending composite mode sandwich-type two-foot rotating 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): H02N2/12
Inventor 刘英想石胜君陈维山刘军考
Owner HARBIN INST OF TECH
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