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Triangle bended plate type piezoelectric straight line ultrasound electric motor

A linear ultrasonic motor, triangular technology, applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of high cost, complicated process, and many parts, and achieve The effect of low cost, small horizontal size and simple structure

Inactive Publication Date: 2008-02-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this motor is that there are many parts, resulting in complicated process and high cost, and the laminated piezoelectric element is not easy to obtain

Method used

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  • Triangle bended plate type piezoelectric straight line ultrasound electric motor
  • Triangle bended plate type piezoelectric straight line ultrasound electric motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Referring to Fig. 1, the triangular bent-plate piezoelectric linear ultrasonic motor includes a stator and a mover, the mover is a linear guide rail 10, and the upper part is supported by two parallel guide wheels 5 with spring legs 4, while the lower part is supported by the stator , the stator consists of a hollow triangular elastic body frame 1 and piezoelectric actuators 2, 7, 8, 10 pasted on its outer surface. The elastic body can be carbon steel, hard aluminum alloy, copper and other metal materials, and can also be other non-metallic materials or composite materials with better elasticity and higher hardness. The piezoelectric actuator used is a piezoelectric ceramic sheet uniformly coated with silver electrodes on the upper and lower sides and polarized along the thickness direction, so the piezoelectric actuator is referred to as a piezoelectric ceramic sheet hereinafter. The stator is a left-right symmetrical structure. There is a raised portion 3 above the s...

Embodiment 2

[0031] Referring to Fig. 2, the structure of the triangular bent-plate piezoelectric linear ultrasonic motor is basically the same as the above-mentioned embodiment, the difference is that the original mover becomes relatively stationary, while the original stator moves in a straight line, that is: the stator It is a linear guide rail (6) above which is supported by two guide wheels 5 with spring legs 4 arranged in parallel. The linear guide rail 6 is relatively horizontally positioned with the base 11. The mover is made of a hollow triangular elastic body frame 1 and pasted outside it. The piezoelectric actuators 2, 7, 8, 10 on the surface are composed, and the triangular vertex of the hollow triangular elastic body frame 1 has a raised part 3 that interferes with the bottom surface of the linear guide 6, and its triangular bottom has a clamper 9 slidingly supported on the base 11. The above-mentioned hollow triangular elastic body frame 1 is a block wire-cut molding.

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Abstract

The present invention relates to a triangular bent-plate piezoelectric linear ultrasonic motor, including a stator and a rotor. The rotor is a linear guide rail, the upper part of which is supported by two guide wheels with the spring support parallel arranged, while the lower part is supported by the stator. The stator consists of a hollow triangular elastic frame and a piezoelectric actuator adhering on the outside surface of the frame. The triangular top point of the hollow triangular elastic frame has a projection abutting with the bottom surface of the linear guide rail, while the midpoint of the bottom edge of the triangle has a clamp fastener connected with the seat. The motor of the invention has a relatively small lateral dimension, can be used for the bidirectional driving and controlling, and has the advantages of simple structure, use convenience and low cost.

Description

technical field [0001] The invention relates to a linear motion driving and control micro linear motor, in particular to a triangular bent plate linear ultrasonic motor with simple and compact structure. Background technique [0002] With the development of electromechanical industry towards high precision, electromechanical products are rapidly miniaturized and thinned. In many fields such as information technology, semiconductor manufacturing, industrial testing, military cutting-edge equipment, biomedicine, aerospace, etc., the linear motion driving mode of the traditional rotary motor acceleration and deceleration machine has become more and more difficult to meet the requirements, and there is an urgent need for direct drive. Compact miniature linear motor. Piezoelectric linear ultrasonic motor has the advantages of direct drive, large power-to-volume ratio, good controllability, self-locking after power failure, low noise, and can be used in strong magnetic and vacuum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 李朝东金侠杰姚华孙涛匡伯谦
Owner SHANGHAI UNIV
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