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A high-thrust threaded linear ultrasonic motor and its working method

A linear ultrasonic motor, threaded technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of low power and difficult application of threaded ultrasonic motor problem, to achieve the effect of increasing the length range, optimizing the internal space, and increasing the output thrust

Active Publication Date: 2021-09-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the threaded ultrasonic motor is still difficult to apply because of its low power.

Method used

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  • A high-thrust threaded linear ultrasonic motor and its working method
  • A high-thrust threaded linear ultrasonic motor and its working method
  • A high-thrust threaded linear ultrasonic motor and its working method

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0033] 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.

[0034] Such as figure 1 , figure 2 As shown, the present invention discloses a high-thrust threaded linear ultrasonic motor, which includes a housing, a first linear bearing of a piezoelectric drive module, a second linear bearing and an output shaft.

[0035] Such as image 3 As shown, the output shaft includes a first light column, a stud, and a second light column coaxially fixed in sequence, and the ends of the first light column and the second light column away from the stud a...

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Abstract

The invention discloses a large thrust thread type linear ultrasonic motor and a working method thereof. The motor comprises a casing, a piezoelectric driving module first linear bearing, a second linear bearing and an output shaft. The two ends of the output shaft are light columns, and the middle is a stud; the piezoelectric driving module is arranged in the casing, and includes two bearing plates, two nuts, a flexible coupling, and four piezoelectric stacks. The through hole controls the movement sequence of the four piezoelectric stacks, so that the two nuts generate periodic movement in a fixed step sequence, which in turn makes the output shaft generate positive and negative linear motion, so as to realize the forward and reverse motion of the device. The invention has high reliability, large output thrust, high versatility, is 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 large-thrust threaded linear ultrasonic motor and its working method. Background technique [0002] Ultrasonic motor is an actuator based on piezoelectric effect and ultrasonic vibration, especially the threaded ultrasonic motor has the characteristics of high precision, self-locking when power off, and large thrust, and has extremely wide applications in the aerospace field. However, the threaded ultrasonic motor is still difficult to apply because of its low power. Therefore, how to increase the power of the ultrasonic motor 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 high-thrust threaded linear ult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00H02N2/04H02N2/14
CPCH02N2/0065H02N2/046H02N2/14
Inventor 原路生王亮金家楣于鹏鹏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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