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Ultrasonic motor with microstructures on surface

An ultrasonic motor and surface micro-modeling technology, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as poor wear resistance of friction pairs, and avoid wear and tear. , The effect of stable friction torque and friction performance improvement

Inactive Publication Date: 2012-08-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of poor wear resistance of the existing ultrasonic motor friction pair, and provides an ultrasonic motor with surface micro-modeling

Method used

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  • Ultrasonic motor with microstructures on surface
  • Ultrasonic motor with microstructures on surface
  • Ultrasonic motor with microstructures on surface

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Experimental program
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specific Embodiment approach 1

[0026] Specific implementation mode one: the following combination figure 1 and figure 2 This embodiment is described. The ultrasonic motor with surface micro-modeling described in this embodiment includes a stator and a mover. The contact surface area of ​​the stator in contact with the mover is evenly arranged with micro-models. The micro-models are Asperities, microdimples or microgrooves.

specific Embodiment approach 2

[0027] Specific implementation mode two: the following combination figure 1 and figure 2 Describe this embodiment, the ultrasonic motor with surface micro-modeling described in this embodiment includes a stator and a mover, and micro-models are evenly arranged on the contact surface area of ​​the mover in contact with the stator, and the micro-models are Asperities, microdimples or microgrooves.

[0028] The microscopic shapes described in the first or second embodiment have certain arrangement rules, and can be selectively and optimally shaped on the surface of the stator or the rotor.

[0029] Such as figure 1 As shown in the figure, the stator produces stretching deformation through the elliptical movement of its surface particles, and then acts on the rotor with the friction layer in the form of friction contact, thereby driving the rotor to rotate.

[0030] figure 2 The driving curve shown is a driving schematic diagram in which the stator does not contain a frictio...

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment is a further description of Embodiment 1 or 2, and the ultrasonic motor is a rotary motor or a linear motor.

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Abstract

The invention discloses an ultrasonic motor with microstructures on a surface, and belongs to the technical field of ultrasonic motors. The problem of poor abrasion resistance of a friction pair of the conventional ultrasonic motor is solved. Two technical schemes are provided, wherein one is that: the ultrasonic motor comprises a stator and a rotor, and the microstructures are uniformly arranged on the contact surface area of the stator which contacts the rotor, and are convex body microstructures, micro pits or micro slots; and the other is that: the ultrasonic motor comprises the stator and the rotor, and the microstructures are uniformly arranged on the contact surface area of the rotor which contacts the stator, and are the convex body microstructures, the micro pits or the micro slots. The invention is applied to the ultrasonic motor.

Description

technical field [0001] The invention relates to an ultrasonic motor with surface micro-modelling, which belongs to the technical field of ultrasonic motors. Background technique [0002] As we all know, the ultrasonic motor is a driving device based on friction. During the propagation of the ultrasonic vibration of an ultrasonic motor in an elastic medium, such as a stator, the surface particle moves on an elliptical trajectory under appropriate excitation conditions. Since the particle has a horizontal motion component, and the rotor is pressed against the surface of the stator with an appropriate pressure, There will be a relative sliding tendency in the contact surface between the two, so under the action of friction, the rotor will undergo a macroscopic telemotion in the horizontal direction. It is precisely because of this driving principle that there is friction between the stator and its partner, and there are lateral sliding, radial and circumferential geometric sli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H02N2/04H02N2/12
Inventor 曲建俊张彦虎
Owner HARBIN INST OF TECH
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