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Miniature multi-degree-of-freedom ultrasonic motor

An ultrasonic motor, degree of freedom technology, applied in generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem that the transmission mechanism affects the operation accuracy and stability of the system, and the bulky volume , complex mechanism and other problems, to achieve the effect of less parts, small volume and small overall size

Active Publication Date: 2016-02-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If each degree of freedom of these systems is driven by a single-degree-of-freedom motor, this will inevitably make the entire mechanism complex, bulky, and heavy, and the error of the transmission mechanism will affect the operating accuracy and stability of the entire system

Method used

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  • Miniature multi-degree-of-freedom ultrasonic motor
  • Miniature multi-degree-of-freedom ultrasonic motor
  • Miniature multi-degree-of-freedom ultrasonic motor

Examples

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Effect test

Embodiment Construction

[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a miniature multi-degree-of-freedom ultrasonic motor includes a top cover 10, a sleeve 11, a base 12, a rotor 13, a stator 14, a retaining ring 15 and a spring 16; the sleeve 11 is connected to the top cover 10 and the The base 12 is connected, the rotor 13 is in spherical contact with the through hole in the center of the upper surface of the top cover 10, the through hole is coupled with the rotor 13, the diameter of the through hole is smaller than the diameter of the rotor 13, and then the rotor 13 is realized. 13 and the pre-positioning of the vertical direction of the stator 14, the top of the stator 14 is in spherical contact with the rotor 13, the spring 16 is installed in the retaining ring 15, and the lower end is in contact with the base 12, the The retaining ring 15 supports the stator 14 .

[00...

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Abstract

The invention relates to a miniature multi-degree-of-freedom ultrasonic motor, comprising a top cover, a sleeve, a base, a rotor, a stator, a retaining ring and a spring; the sleeve is connected with the top cover and the base, and the rotor is connected with the base The through hole in the center of the upper surface of the top cover is in spherical contact, and the through hole is coupled with the rotor. The diameter of the through hole is smaller than the diameter of the rotor, thereby realizing the pre-positioning of the rotor and the stator in the vertical direction. The stator The top of the spring is in contact with the spherical surface of the rotor, the spring is installed in the retaining ring, and the lower end is in contact with the base, and the retaining ring supports the stator. The miniature multi-degree-of-freedom ultrasonic motor of the present invention has the advantages of small size, simple structure, low speed and high torque, can directly drive a manipulator, and is not affected by a magnetic field.

Description

technical field [0001] The invention relates to the technical field of ultrasonic motors, in particular to a miniature multi-degree-of-freedom ultrasonic motor for driving joints of a manipulator. Background technique [0002] With the development of science and technology, the electromechanical system is becoming more and more complex, and higher requirements are placed on the drive motor. For example, robot joints, eyeballs, and monitoring systems all require multi-degree-of-freedom drives. If each degree of freedom of these systems is driven by a single-degree-of-freedom motor, this will inevitably make the entire mechanism complex, bulky, and heavy, and the error of the transmission mechanism will affect the operating accuracy and stability of the entire system. [0003] Compared with the traditional single-degree-of-freedom motor, the multi-degree-of-freedom ultrasonic motor has: 1. Not affected by the magnetic field; 2. Miniaturization and high power density; 3. No noi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 张健滔吴松王宇航赵佳庆
Owner SHANGHAI UNIV
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