Ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator

A linear ultrasonic motor, I-shaped technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., to improve motor performance, facilitate miniaturization, simplify processing and The effect of the assembly process

Active Publication Date: 2015-03-11
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 various adverse effects caused by the coupled bending vibration existing in the existing rectangular quadruped linear ultrasonic motor vibrator, the present invention provides a ceramic embedded I-shaped quadruped linear ultrasonic motor vibrator

Method used

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  • Ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator
  • Ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator
  • Ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator

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specific Embodiment approach 1

[0023] Specific implementation mode one: the following combination Figure 1 to Figure 3 Describe this embodiment, the ceramic embedded I-shaped four-legged linear ultrasonic motor vibrator in this embodiment includes an I-shaped metal substrate 1, twelve pairs of piezoelectric ceramic sheets 2, twelve spring blocks 3, insulating pads sheet 4 and twelve electrode sheets 5,

[0024] The I-shaped metal base 1 is composed of two horizontal metal beams 1-1 and a vertical metal beam 1-2, the shape of the horizontal metal beam 1-1 and the vertical metal beam 1-2 are the same, wherein the horizontal metal beam 1 -1 consists of a beam body and two horns, the beam body is a cylinder with a circular or square cross-section, the two ends of the beam body are respectively fixedly connected to the horns, and the horn is a circular cross-section or a block that is square and tapered toward its end, and the large end face of the horn is in the same shape as the connection interface between ...

specific Embodiment approach 2

[0029] Specific implementation mode two: the following combination Figure 1 to Figure 3 This embodiment is described. This embodiment is a further description of Embodiment 1. The I-shaped metal base 1 composed of two horizontal metal beams 1-1 and vertical metal beams 1-2 is one piece.

[0030] The two horizontal metal beams 1-1 and the vertical metal beams 1-2 are processed in one piece, which can simplify the processing and assembly process and ensure the processing accuracy.

specific Embodiment approach 3

[0031] Specific implementation mode three: the following combination Figure 4 Describe this embodiment, this embodiment is a further description of Embodiment 1 or 2, all piezoelectric ceramic sheets 2 are polarized along the thickness direction, and the polarization direction of two piezoelectric ceramic sheets in each pair of piezoelectric ceramic sheets 2 On the contrary, the polarization directions of two adjacent piezoelectric ceramic sheets of the adjacent pair of piezoelectric ceramic sheets 2 are opposite, and the polarization directions of the piezoelectric ceramic sheets at corresponding positions on the two horizontal metal beams 1-1 are opposite.

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Abstract

A ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator belongs to the technical field of piezoelectric ultrasonic motors, eliminating various adverse effects caused by the coupled lateral vibration of the conventional rectangular four-foot linear ultrasonic motor vibrator. A piezoelectric ceramic sheet of the ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator is excited by two-phase alternating voltage signals of which the amplitude values are equal, the frequencies are the resonance frequency of the vibrator and the phase difference is plus 90 degrees; piezoelectric ceramic sheets on a horizontal metal beam and a vertical metal beam of the ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator are excited by two-phase voltage respectively; two vibrating modes are excited in the vibrator through the telescopic vibration of the piezoelectric ceramic sheet; the two vibrating modes are superposed on four terminals of the horizontal metal beam, namely generating an elliptic movement track by particles on the surfaces of four driving feet; and when the four driving feet contact rotors on two sides of the four driving feet under a certain prepressure, a macroscopic movement output can be realized by frictional coupling between the driving feet and the rotors. The ceramic embedded I-shaped four-foot linear ultrasonic motor vibrator is applicable to manufacturing of a ultrasonic motor.

Description

technical field [0001] The invention relates to a vibrator of a ceramic embedded I-shaped quadruped linear ultrasonic motor, which belongs 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 friction coupling between the rotors 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 speed change mechanism, no electromagnetic interference, fast response speed and self-locking when power is off. Electric drives, piezoelectric ultrasonic motors have a very wide range of appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
Inventor 刘英想陈维山冯培连刘军考石胜君
Owner HARBIN INST OF TECH
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