Bearing vibration measuring device based on optical interference principle and measuring method thereof

A technology of bearing vibration and measuring devices, which is applied in the directions of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve the problems of low measurement accuracy and unsatisfactory high-speed measurement, and achieve the effect of high measurement accuracy

Inactive Publication Date: 2020-06-12
HEFEI UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing bearing vibration displacement measurement device does not meet the high-speed measurement and the measurement accuracy is low, the present invention provides a bearing vibration measurement device and its measurement method based on the principle of optical interference

Method used

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  • Bearing vibration measuring device based on optical interference principle and measuring method thereof
  • Bearing vibration measuring device based on optical interference principle and measuring method thereof
  • Bearing vibration measuring device based on optical interference principle and measuring method thereof

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Embodiment 1

[0054] see figure 1 , figure 2 as well as image 3 , this embodiment provides a bearing vibration measuring device based on the principle of optical interference, the measuring device is used to measure the mechanical vibration displacement of the bearing 1 to be tested. The measuring device can be used as a detection device in the bearing quality measurement, and can judge the quality of the bearing by detecting the vibration displacement generated by the bearing during high-speed motion. It can also be used as an experimental device for the bearing detection test. It can also be used as a measuring device for bearing maintenance. The measurement device includes a laser 2, a beam splitter 3, a reflector 4, a charge-coupled device 5 and a signal processing system, and may also include a front lens 8, a reflector 2 9, a test platform 10, a bearing-driven positioning mechanism and a display screen 13 .

[0055] The laser 2 is used to emit a laser beam to the bearing 1 to be...

Embodiment 2

[0068] see Figure 4-7 , this embodiment provides a bearing vibration measuring device based on the principle of optical interference, and the device is added an optical isolator on the basis of Embodiment 1. The optical isolator is arranged between the laser 2 and the beam splitter 3 , and is used for allowing the laser beam to pass through and preventing the beam on one side of the beam splitter 3 from returning to the laser 2 . In this embodiment, the optical isolator includes a polarizer 6 and a wave plate 7 . Both the polarizer 6 and the wave plate 7 are located on the moving path of the laser beam, and the polarizer 6 is arranged between the laser 2 and the wave plate 7 . Wherein, the wave plate 7 is a 1 / 4 wave plate.

[0069] The optical isolator of the bearing vibration measurement device based on the principle of optical interference can effectively prevent the measured object and the reference optical path from returning to the laser 2 to interfere with the output of...

Embodiment 3

[0071] This embodiment provides a bearing production system, which includes the bearing vibration measuring device based on the principle of optical interference in Embodiment 1 or Embodiment 2, and also includes an alarm device and a controller. The controller is used for judging whether the displacement measured by the signal processing system is greater than a preset displacement. When the displacement is greater than the preset displacement, the controller will drive the alarm device to send an alarm message to remind the production personnel that the vibration displacement of the bearing is too large, and stop the motor 11 from rotating. When the displacement is not greater than the preset displacement, the controller draws the continuously generated displacement as a measurement curve and displays it on the display screen 13, and also judges whether the measurement time reaches a preset time. When the measurement time reaches a preset time, the controller stops the rotat...

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Abstract

The invention discloses a bearing vibration measuring device based on an optical interference principle and a measuring method thereof. The device comprises a laser, a spectroscope, a first reflector,a charge-coupled device and a signal processing system. The laser is used for emitting a laser beam to a to-be-measured bearing, the spectroscope divides the laser beam into a reflected beam and a transmitted beam, and the first reflector is used for reflecting the reflected beam back to the spectroscope. The spectroscope is arranged between the first reflector and the charge-coupled device, andafter the transmission light beam moves to the to-be-measured bearing, the optical path length is changed by the vibration displacement of the to-be-measured bearing, and the transmission light beam is reflected back to the spectroscope, interferes with the reflected light beam reflected back to the spectroscope and generates interference fringes. The charge-coupled device is used for capturing interference fringes and converting the interference fringes into corresponding electronic information. The signal processing system is used for calculating the displacement of the mechanical vibrationof the to-be-measured bearing. According to the invention, the measurement precision and the reaction sensitivity are effectively improved, and a good data guarantee is provided for subsequent vibration elimination work.

Description

technical field [0001] The invention relates to a bearing vibration measurement device in the technical field of bearing detection, in particular to a bearing vibration measurement device based on the principle of optical interference, and also to a bearing vibration measurement method of the measurement device based on the principle of optical interference. Background technique [0002] The working process of bearings is often accompanied by mechanical vibration, and mechanical vibration often has a significant impact on the performance of the system. In addition, the noise level during mechanical work is often closely related to the vibration of the system during work. Therefore, the mechanical vibration of the system is an essential factor when considering the performance of the machine. However, the existing technologies for eliminating mechanical vibrations often presuppose a good knowledge of the vibration conditions during the working process of the machine. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/045G01H9/00
CPCG01H9/00G01M13/045
Inventor 洪占勇郑书林杨永跃周成武张袁
Owner HEFEI UNIV OF TECH
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