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Grooving type longitrorse compound ultrasonic motor

An ultrasonic motor and composite technology, which is applied in the directions of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. Adjustment and other issues to achieve the effect of frequency consistency, easy frequency consistency, and easy miniaturization

Active Publication Date: 2014-10-29
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant once proposed a method of constructing an ultrasonic motor using longitudinal torsion piezoelectric ceramic sheets (Chinese invention patent, application number: 201210496699.6), and initially proposed the construction theory and method of a patch type longitudinal torsion ultrasonic motor, but the patch micromotor exists Problems such as small torsional amplitude and difficult adjustment of longitudinal torsional amplitude

Method used

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  • Grooving type longitrorse compound ultrasonic motor
  • Grooving type longitrorse compound ultrasonic motor
  • Grooving type longitrorse compound ultrasonic motor

Examples

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] The slotted longitudinal-torsion composite ultrasonic motor of the present invention adopts the composite vibration mode of the first-order longitudinal vibration and the second-order torsional vibration as the working mode, or adopts the composite vibration mode of the first-order longitudinal vibration and the first-order torsional vibration as the working mode state. The structure of the present invention is as Figure 6 As shown, the motor consists of a stator (such as figure 1 shown)...

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Abstract

The invention provides a grooving type longitrorse compound ultrasonic motor which is composed of a stator, a rotor and a precompression mechanism. The precompression mechanism comprises a spring, a hoop and a bearing. The stator comprises a piezoelectric ceramic piece and a stator base body, the upper end and the lower end of the piezoelectric ceramic piece are provided with stator driving ends, the stator is pressed at the stator driving ends through the spring and is locked through the hoop, the bearing penetrates the stator and the rotor, the piezoelectric ceramic piece adheres to the outer surface of the stator base body and stimulates longitrorse compound vibration on particles of the driving ends, a motion track of the particles on the end face of the stator is an oval, and the stator drives the rotor to rotate through friction. The grooving type longitrorse compound ultrasonic motor improves torsion amplitude and can accurately adjust the longitrorse amplitude proportional relations.

Description

technical field [0001] The invention relates to a motor, in particular to a slotted longitudinal-torsion composite ultrasonic motor. Background technique [0002] Ultrasonic motor (also known as "ultrasonic motor", English name is "Ultrasonic Motor") is a piezoelectric motor, which uses the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into vibration energy of the ultrasonic motor stator, and then Vibration energy is converted into rotational or linear motion of moving parts through friction. Compared with traditional electromagnetic motors, ultrasonic motors have many characteristics and advantages, such as: 1. Compact structure, high energy density (torque / mass), and easy miniaturization. 2. Low speed and high torque, without gear reduction mechanism, can realize direct drive. 3. The response speed of the motor is fast, and it can realize self-locking when power off. 4. Good position and speed control, high displacement resolution....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 鹿存跃李冲马艺馨
Owner SHANGHAI JIAO TONG UNIV
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