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Linear piezoelectric transmission device based on static friction, and working method thereof

A transmission device and static friction technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as low power, and achieve fast response and high precision Effect

Active Publication Date: 2021-04-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of its small power, it can only be used as a transmission part of tiny components during use.

Method used

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  • Linear piezoelectric transmission device based on static friction, and working method thereof
  • Linear piezoelectric transmission device based on static friction, and working method thereof
  • Linear piezoelectric transmission device based on static friction, and working method thereof

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0038] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0039] Such as figure 1 , figure 2 As shown, the present invention discloses a linear piezoelectric transmission device based on static friction, which includes a housing, first to third linear bearings, an output shaft, first to eighth mounting seats, and first to eighth piezoelectric drive module.

[0040] Such as image 3 As shown, the output shaft is provided with connecting keys for connecting with the outside at both ends.

[0041] Such as Figure 4 , Figure 5 As shown, ...

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PUM

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Abstract

The invention discloses a linear piezoelectric transmission device based on static friction, and a working method of the linear piezoelectric transmission device. The device comprises a shell, three linear bearings, an output shaft, eight mounting seats and eight piezoelectric driving modules, wherein the output shaft is a light pillar, the piezoelectric driving module comprises two piezoelectricdriving units used for applying opposite thrust to the output shaft, and each piezoelectric driving unit comprises a first flexible hinge, a piezoelectric actuator, a second flexible hinge and a friction block which are connected in sequence. According to the invention, by controlling the movement time sequence of the piezoelectric actuator, the friction block generates periodic movement with a fixed step sequence, and the output shaft generates forward and reverse linear movement under the action of static friction force between the friction block and the output shaft, so that the forward andreverse movement work of the device is realized; and the device is high in reliability, large in output thrust, high in precision, good in universality and easy to popularize, and has good economic benefits.

Description

technical field [0001] The invention relates to the field of piezoelectric drive, in particular to a linear piezoelectric transmission device based on static friction and a working method thereof. Background technique [0002] Piezoelectric actuator is an actuator based on piezoelectric effect and ultrasonic vibration. Because of its fast response speed, high precision, and stepless speed regulation, it is widely used in the aerospace field. However, because of its small power, it can only be used as a transmission member for tiny components during its use. Therefore, how to increase the power of the piezoelectric transmission mechanism and how to further increase the output thrust and load force have become the main problems faced by the piezoelectric actuator to further expand the application range and improve the performance of the device. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a linear piezoelectric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02
CPCH02N2/02
Inventor 原路生王亮高禹金家楣
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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