Device and method for precise adjustment of gyro rotor mass center position based on ultrasonic anti-friction effect

A gyro rotor and ultrasonic anti-friction technology, which is applied in the direction of measuring devices, machine/structural component testing, static/dynamic balance testing, etc., can solve problems such as the phenomenon of crawling, and achieve a significant effect of reducing friction and reducing friction Effect

Active Publication Date: 2019-01-01
DALIAN UNIV OF TECH
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Problems solved by technology

The offset distance of the center of mass of the gyro rotor relative to the center of rotation generally ranges from a few microns to more than ten microns. The original solution uses a stepping motor to drive the adjustment screw into the threaded hole for adjusting the rotor, and adjust the center of mass of the rotor by pulling. The scheme realizes the automation of rotor adjustment to a certain extent, but the crawling phenomenon still exists

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  • Device and method for precise adjustment of gyro rotor mass center position based on ultrasonic anti-friction effect

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Embodiment Construction

[0016] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0017] A device for finely adjusting the center of mass position of a gyro rotor based on the ultrasonic anti-friction effect, comprising a gyro rotor 1, a ball bearing 4, a drive motor 5, a fastening screw 6, a gyroscope body 7, a gyroscope fixture 8, and an inductance micrometer 9 , the device also includes: an adjustment screw 3, an ultrasonic transducer 2, a stepper motor 10; wherein, the stepper motor 10 is connected with the adjustment screw 3 through a coupling, and the adjustment screw 3 passes through the circle of the ultrasonic transducer 2 hole, so that the ultrasonic transducer 2 is overlaid on the adjustment screw 3; during adjustment, the ultrasonic transducer 2 will generate ultrasonic vibration, the gyroscope main body 7 is fixed in the gyroscope fixture 8, and the two inductance micrometers 9 are re...

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Abstract

The invention discloses a gyro rotor mass center position accurate adjustment device and method based on an ultrasonic antifriction effect, and belongs to the field of small displacement adjustment of precision machinery. An ultrasonic transducer is added between an adjusting screw and a gyro clamp; in the adjusting process, the ultrasonic transducer transmits ultrasonic vibration to the adjusting screw; and at the moment, the adjusting screw has already been screwed into a rotor adjusting screw hole, so that the ultrasonic vibration can be transmitted to a gyro rotor through transmission of the adjusting screw to realize ultrasonic vibration between rotor contact surfaces. Transverse vibration between the contact surfaces can reach the ultrasonic antifriction effect, and besides, through axial rotation of the adjusting screw, accurate adjustment of gyro rotor mass center position can be realized under the condition of smaller friction force. The device and method can effectively reduce the friction force between the rotor and bearing contact surfaces, thereby reducing creeping phenomenon and improving adjusting precision and efficiency; and the device and method can be widely applied to the small displacement accurate adjustment process.

Description

technical field [0001] The invention belongs to the field of micro-displacement adjustment of precision machinery, and relates to a device and method for precisely adjusting the centroid position of a gyro rotor based on the ultrasonic anti-friction effect. Background technique [0002] Gyroscopes play a key role in the detection of aircraft flight attitude and inertial guidance. The good performance of gyroscopes is crucial to the judgment of aircraft attitude. In order to ensure the measurement accuracy of the gyroscope, it is necessary to control the misalignment between the center of mass of the rotor and the axis of rotation within a certain range. Otherwise, when the rotor rotates at a high speed, the vibration of the gyroscope will be severe, and the measurement data error of the gyroscope will be large and the service life will be greatly increased. shorten. [0003] Most of the current gyro rotor dynamic balancing methods use manual adjustment. During the adjustmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/12
CPCG01M1/127
Inventor 娄志峰王晓东张锋魏超
Owner DALIAN UNIV OF TECH
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