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Static friction-based linear piezoelectric transmission device and its working method

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: 2021-10-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • 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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  • Static friction-based linear piezoelectric transmission device and its working method
  • Static friction-based linear piezoelectric transmission device and its working method
  • Static friction-based linear piezoelectric transmission device and its working method

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

[0041] like Figure 4 , Figure 5 As shown, the housi...

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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 thereof. The device includes a casing, three linear bearings, an output shaft, eight mounting seats and eight piezoelectric drive modules. The output shaft is a beam of light; the piezoelectric drive module includes two piezoelectric drive units for applying opposite thrust to the output shaft, and the piezoelectric drive unit includes a first flexible hinge, a piezoelectric actuator, a second flexible hinge and friction block. By controlling the timing of the piezoelectric actuator movement, the friction block produces a periodic motion of a fixed step, and under the action of static friction between the friction block and the output shaft, the output shaft produces positive and negative motions in a straight line, thereby realizing the positive and negative motion of the device. , Reverse kinematic work. The invention has high reliability, large output thrust, high precision, good versatility, easy popularization and 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 Patents(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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