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Single-driving foot sandwiched transducer type longitudinal bending linear ultrasonic motor

A technology of linear ultrasonic motors and transducers, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem of low motor efficiency, small thrust, and low speed and other problems, to achieve the effect of increasing amplitude and vibration velocity, good velocity stability, and degeneracy of longitudinal bending frequency

Inactive Publication Date: 2007-11-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low moving speed, small thrust and low motor efficiency of the existing linear ultrasonic motor, the present invention further provides a single-drive foot-sandwich transducer type Longitudinal bending linear ultrasonic motor

Method used

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  • Single-driving foot sandwiched transducer type longitudinal bending linear ultrasonic motor
  • Single-driving foot sandwiched transducer type longitudinal bending linear ultrasonic motor
  • Single-driving foot sandwiched transducer type longitudinal bending linear ultrasonic motor

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specific Embodiment approach 1

[0007] Specific embodiment 1: This embodiment will be described in conjunction with Fig. 1, Fig. 2 and Fig. 3. The single-drive foot sandwich transducer-type longitudinal bending linear ultrasonic motor of this embodiment is composed of a sandwich transducer and a drive foot 6. The sandwich transducer consists of a horn 1, two end caps 2, two sets of piezoelectric ceramic sheets 3, two flange studs, and a thin copper sheet 5; the flange studs are composed of flanges 4 and Composed of studs 14, the middle position on the studs 14 is fixed with a flange 4; the horn 1 is a quadrangular body whose cross-section gradually becomes thinner from both ends to the middle, and the driving foot 6 is located on the horn 1, the piezoelectric ceramic sheet group 3 is composed of two bending piezoelectric ceramic sheets 7 and two longitudinal vibration piezoelectric ceramic sheets 8, and the outer studs 14 of the two flange studs are respectively installed There are two bending vibration piez...

specific Embodiment approach 2

[0008] Embodiment 2: As shown in Fig. 1 and Fig. 2, the horn 1 and the driving foot 6 are processed from a single piece of metal material. Reduce energy loss, simple structure and easy processing.

specific Embodiment approach 3

[0009] Embodiment 3: As shown in FIG. 1 , both the upper end cross-section and the lower end cross-section of the driving foot 6 are rectangular. Adopting such a structure can make the driving foot 6 fully contact with the plane of the guide rail, and improve the motion stability of the linear ultrasonic motor. Other components and connections are the same as those in the first embodiment.

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Abstract

The disclosed variation pole is quadrangular body with rectangular section thinned gradually from two ends to central section. Drive feet are located at middle position of the pole. Piezoelectric ceramic piece in longitudinal vibration and piezoelectric ceramic piece in bending vibration are respectively installed on inner and outer sides of bolts on two flange bolts. Two end plates are installed on outer sides of bolts on two flange bolts. Through two flange bolts, two end plates, two groups of piezoelectric ceramic piece, and thin copper sheet are fastened and integrated to two larger ends of the pole. Advantages are: simple structure, smooth operation, large output thrust, and motion in high speed.

Description

technical field [0001] The invention relates to a linear ultrasonic motor and belongs to the technical field of piezoelectric ultrasonic motors. Background technique [0002] Ultrasonic motor is a motor that uses ultrasonic vibration energy and generates driving force through friction. It has the advantages of low speed and high torque (thrust), no need for transmission mechanism, no electromagnetic interference, fast response and self-locking when power is off. It has a very wide range of applications as a piezoelectric driver. At present, the motion speed of all linear ultrasonic motors generally does not exceed 1m / s when the driving voltage is lower than 100V, and the output thrust is generally less than 30N, which seriously restricts the application of linear ultrasonic motors in high-speed and high-power occasions. Contents of the invention [0003] In order to solve the problems of low moving speed, small thrust and low motor efficiency of the existing linear ultras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/08
Inventor 陈维山石胜君刘军考谢涛
Owner HARBIN INST OF TECH
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