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Powerful output sandwich type mode conversion ultrasonic motor, drive platform and drive method thereof

A mode conversion, strong output technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of small effective contact area, small vibration amplitude, etc. The output performance of the ultrasonic motor is not ideal, and the output performance of the whole machine is improved, the vibration amplitude is large, and the output power is large.

Inactive Publication Date: 2016-01-27
CHANGCHUN UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems such as the unsatisfactory overall output performance of the ultrasonic motor due to the small effective contact area between the stator and the rotor or the small vibration amplitude for the ultrasonic motor using the beam structure elastic body or the plate structure elastic body alone, the present invention discloses a A kind of powerful output sandwich mode conversion ultrasonic motor, driving platform and driving method thereof

Method used

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  • Powerful output sandwich type mode conversion ultrasonic motor, drive platform and drive method thereof

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specific Embodiment approach 1

[0035] Specific implementation mode one: combine Figure 1~Figure 10 , Figure 13~Figure 15 This embodiment will be described. This embodiment provides a specific implementation of a powerful output sandwich mode conversion ultrasonic motor. The powerful output sandwich mode conversion ultrasonic motor is mainly composed of a fixed base 1, a first elastic body 2, a second elastic body 3, a rotating body 4, a key 5, a thrust ball bearing 6, a butterfly spring 7, a nut 8 and an output Shaft 9 is composed.

[0036] The fixed base 1 is a plate structure, and the end surface of one side of the fixed base 1 is evenly provided with n through holes 1-1 structures along the circumferential direction, which are used to realize the fixed installation of the present invention, wherein n is greater than or equal to 1 Integer; the central position of the end surface of the fixed base 1 is provided with a threaded hole 1-2 structure, which is used to match the front end 2-1 of the first e...

specific Embodiment approach 2

[0042] Specific implementation mode two: combination Figure 16~Figure 24 This embodiment will be described. This implementation mode provides a specific implementation scheme of a drive platform using a powerful output sandwich mode conversion ultrasonic motor. The driving platform using a powerful output sandwich mode conversion ultrasonic motor is mainly composed of a fixed outer frame 1, a first elastic body 2, a second elastic body 3, a rotating platform 4, a rolling body 5, a thrust ball bearing 6, a butterfly Formed spring 7, fastening connector 8 and hexagon socket bolt 9, the second elastic body 3 in the driving platform of the sandwich type mode conversion ultrasonic motor with strong output is the same as the second elastic body 3 in the first specific embodiment The structural composition and connection method are the same.

[0043] The fixed outer frame 1 is a thin-walled ring structure with a flange at one end, and q through holes 1-1 structures are evenly arra...

specific Embodiment approach 3

[0049] Embodiment 3: This embodiment provides a specific embodiment of a powerful output sandwich mode conversion ultrasonic motor and a driving method of a driving platform using the motor.

[0050] The specific embodiment of the described strong output sandwich type mode conversion ultrasonic motor and the driving method of the driving platform using the motor is as follows: the excitation group A is connected with an AC excitation electric motor of a certain ultrasonic frequency (generally greater than 16kHz). The signal, through the mode converter 2-3-4 structure, excites the first elastic body 2 where it is located to generate a torsional vibration mode, and the excited longitudinal vibration excites the second elastic body 3 to generate a bending vibration mode, using the superposition of vibration modes Coupling generates driving friction on the contact surface between the second elastic body 3 and the rotating body 4 or rotating platform 4 to realize the motion output o...

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Abstract

The present invention discloses a powerful output sandwich type mode conversion ultrasonic motor, a drive platform and a drive method thereof, and aims to solve the technical problem that conventional ultrasonic motors only use a beam-structure elastomer or a disk-structure elastomer and are thus unsatisfactory in overall output performance. The powerful output sandwich type mode conversion ultrasonic motor comprises a fixed pedestal, a first elastomer, a second elastomer, a rotating body, a bolt, a thrust ball bearing, a belleville spring, a nut and an output shaft, wherein the first elastomer is of a beam structure and is provided with a mode converter structure, and the second elastomer is of a plate structure. An ultrasonic frequency band stimulation electrical signal is applied to a piezoelectric stack, a mode converter stimulates the first elastomer and the second elastomer to generate torsion and bending vibration modes respectively, and superposition coupling of vibration modes is utilized to generate a drive frictional force, thereby realizing movement output of the ultrasonic motor. The powerful output sandwich type mode conversion ultrasonic motor has the technical advantages of being large in output power, stable in operation and wide in application range, and has a wide application prospect in precise drive and micro positioning technology fields.

Description

technical field [0001] The invention relates to a powerful output sandwich mode conversion ultrasonic motor, a driving platform and a driving method thereof, and belongs to the technical field of precision driving and micro-positioning. Background technique [0002] The ultrasonic motor is a micro motor that uses the inverse piezoelectric effect of the piezoelectric element to excite the elastic body to generate a small ultrasonic vibration, and realizes the output of mechanical energy through frictional coupling. Compared with the traditional electromagnetic motor, it is widely used in the field of precision drive and micro-positioning technology because of its technical advantages such as easy miniaturization of structure, fast response speed, and no electromagnetic interference. According to the structural form of the elastic body (or stator) and the driving excitation mode, ultrasonic motors mainly include beam-structure elastic body ultrasonic motors and plate-structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 张邦成程廷海徐兵刘亮王良王占礼秦峰
Owner CHANGCHUN UNIV OF TECH
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