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Method for measuring non-contact type bearing startup friction torque and measuring instrument thereof

A friction torque, non-contact technology, applied in the direction of measuring devices, torque measurement, instruments, etc., can solve the problem of unable to quantitatively detect and control bearing friction performance, large error value, and unable to meet the detection and analysis of starting friction torque of small and medium-sized bearings and performance tests to solve the difficulties of transient measurement, improve reliability and accuracy, and improve friction performance

Inactive Publication Date: 2008-11-12
LUOYANG BEARING SCI & TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] At present, domestic bearing manufacturers measure the starting friction torque of bearings, mostly based on theoretical calculations or simple measurement methods using hanging weights, resulting in large errors in estimation and measurement, especially some main engine manufacturers require bearing starting friction Accurate technical parameters, the existing equipment cannot meet the requirements of the detection analysis and performance test of the small and medium-sized bearing starting friction torque, and cannot quantitatively detect and control the friction performance of the bearing, so the domestic urgent need to solve the instrument for measuring the starting friction torque of the bearing

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  • Method for measuring non-contact type bearing startup friction torque and measuring instrument thereof
  • Method for measuring non-contact type bearing startup friction torque and measuring instrument thereof

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Embodiment Construction

[0019] Such as figure 1 Shown: the measurement method of the present invention is first based on the measurement principle of the energy conversion method, uses a special torque generator (7) to generate the induced electromagnetic torque as the driving torque, and forms a closed-loop system with the photoelectric sensor (9) to automatically monitor the starting and running state of the bearing; Secondly, the air bearing (6) is used as a support to realize the non-contact automatic measurement of the starting friction torque value of the bearing; finally, during the measurement, the tested bearing (4) is installed on the air main shaft (6), and the driving disc is connected with the air main shaft, juxtaposed In the torque generator (7), after the axial load is applied to the tested bearing (4), the computer automatically controls the electrical system to gradually apply the input power to the torque generator (7). When the induced electromagnetic torque passes through the driv...

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Abstract

An apparatus for measuring non contact type bearing start friction torque, is composed mainly of a loading cylinder (1), a force transducer (2), a loading housing (3), an air main shaft (5), an air bearing (6), a torque generator (7), a disk drive (8), an optoelectric transducer (9), an electrical system. The torque generator generates induction electromagnetic torque as drive torque, the optoelectric transducer monitors bearing start running state automatically; when being measured, the measured bearing is installed on the air main shaft, the disk drive is linked with the air main shaft and placed in the torque generator, the electrical system applies input power to the torque generator step by step after throwing axial load, when the induction electromagnetism drives the air main shaft to rotate through the disk drive, the optoelectric transducer matching-installed by the disk drive monitors the measured bearing from static state to start running state, and outputs signal to stop applying input power, and records current power value which is the start friction torque value of the measured bearing.

Description

technical field [0001] The invention belongs to the technical field of bearing friction torque measurement, and in particular relates to a non-contact bearing starting friction torque measurement method and a measuring instrument. Background technique [0002] The starting friction performance of the bearing is one of the important technical indicators of the dynamic performance quality of the bearing. It is an important factor affecting the life of the bearing and the reliability and accuracy of the host system. Under normal starting conditions, the magnitude and fluctuation of the friction torque directly affect the life, stability and reliability of the system, so there are extremely strict requirements for the starting friction torque. Foreign countries pay more attention to the research of bearing starting friction, but domestically there is no technical requirement for bearing starting friction torque, and there is still a big gap in this respect. In recent years, wit...

Claims

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Application Information

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IPC IPC(8): G01L3/22
Inventor 高奋武李国斌王宗克刘金秀廖家祥
Owner LUOYANG BEARING SCI & TECH CO LTD
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