Threaded Linear Ultrasonic Motor

A linear ultrasonic motor, screw-type technology, applied in the directions of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem that the output is not very large, and achieve large driving force , The effect of high precision and large torque output

Inactive Publication Date: 2016-06-01
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing threaded motor scheme, when the motor is driven, the contact between the stator and the rotor is point contact or line contact, and the output is not very large.

Method used

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  • Threaded Linear Ultrasonic Motor
  • Threaded Linear Ultrasonic Motor
  • Threaded Linear Ultrasonic Motor

Examples

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0023] This embodiment includes a stator and a rotor, wherein the stator includes a stator base body 31 and a longitudinal vibration piezoelectric sheet 11 and a torsional vibration piezoelectric sheet 21 pasted thereon, and the stator base body 31 is uniformly distributed on a hollow cylinder. The four planes are used to paste the longitudinal vibration piezoelectric sheet 11 and the torsional vibration piezoelectric sheet 21. The longitudinal vibration piezoelectric sheet 11 and the torsional vibration piezoelectric sheet 21 are installed symmetrically and used in pairs; the rotor 61 runs through the stator and pas...

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Abstract

The invention discloses a threaded linear ultrasonic motor. The threaded linear ultrasonic motor comprises a stator and a rotor, wherein the stator comprises stator bases, longitudinal vibration piezoelectric plates and torsional vibration piezoelectric plates. The longitudinal vibration piezoelectric plates and the torsional vibration piezoelectric plates are sticked on the stator. The stator bases are four flat surfaces which are uniformly cut on a hollow cylinder to be used for sticking the longitudinal vibration piezoelectric plates and the torsional vibration piezoelectric plates. The longitudinal vibration piezoelectric plates and the torsional vibration piezoelectric plates are respectively arranged symmetrically and used in pairs. The rotor is penetrated through the stator, and is matched with an inner thread of two thread driving ends of the stator through an outer thread of the rotor. The longitudinal vibration piezoelectric plates and the torsional vibration piezoelectric plates excite compound vibrations of a longitudinal vibration and a torsional vibration in the stator to enable a particle movement locus of the thread driving ends of the stator to be ellipses. The stator drives the rotor to be rotated through rub and transform a rotational motion to a rectilinear motion. The threaded linear ultrasonic motor can achieve speed regulation and dual direction driving. The threaded linear ultrasonic motor has the advantages of being low in cost, high in accuracy, and simple to manufacture. The threaded linear ultrasonic motor contributes to miniaturization and industrialization.

Description

technical field [0001] The invention relates to the technical field of ultrasonic application devices, in particular to a threaded linear ultrasonic motor. Background technique [0002] The ultrasonic motor is a piezoelectric motor, which uses the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into vibration energy of the stator of the ultrasonic motor, and then converts the vibration energy into rotation or linear motion of moving parts through friction. It is generally mainly composed of a stator, a rotor (mover) and a pre-pressure mechanism. Compared with traditional electromagnetic motors, ultrasonic motors have many features and advantages, such as: compact structure, high energy density (torque / mass), easy miniaturization; low speed and high torque, without gear reduction mechanism, can realize direct drive; motor response The speed is fast, and it can realize power-off self-locking; the position and speed controllability is good,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02
Inventor 鹿存跃马艺馨王俊璞
Owner SHANGHAI JIAOTONG UNIV
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