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Device for measuring friction force of bearing under tiny load

A measuring device and friction technology, applied in the field of torque measurement, can solve the problems of unstable friction and difficult friction.

Inactive Publication Date: 2007-06-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For radial bearings under micro-load conditions, the difficulty in measuring friction lies in two points: the instability of friction, which is often related to the bearing capacity, speed and structure; the tiny friction is difficult to use with ordinary method determination

Method used

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  • Device for measuring friction force of bearing under tiny load
  • Device for measuring friction force of bearing under tiny load
  • Device for measuring friction force of bearing under tiny load

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 and Figure 2 are schematic diagrams of friction measurement, and the measurement steps are as follows:

[0027] 1) The method of measuring the friction force is to use the principle of leverage to convert the friction torque between the tested sliding bearing and the rotating shaft or between the inner and outer rings of the tested rolling bearing into the rotation angle through the measuring frame suspended above the rotating shaft, and use the force point After the tension is balanced, its rotation angle will remain balanced, and the rotation angle and frictional moment will maintain an approximately linear relationship within a small angle < 5°, so that the error does not exceed 5‰;

[0028] 2) The force is loaded from above, and the load force line is connected to the pulley, and the load is realized by utilizing its force direction ...

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Abstract

The invention discloses the bearing micro-load friction measuring method and the equipment. The measuring frame comprises the extruding arm, the measuring dial, the loading bolt, the measured bearing and the baffle. Equip the measured bearing in the hole of the measuring dial; add the force on the measuring frame from the top by the upward force and realize the micro-load measuring through the gravity of the measuring frame paralleled floating above the spin axis. The angle produced by the parallel of the friction and the pull force of the deviation is amplified into the vertical displacement of the extruding arm end. The non-contacting sensor realizes the precise measurement of the friction and the frictions coefficients of the sliding bearing and rolling bearing.

Description

technical field [0001] The invention relates to the measurement of moment, in particular to a device for measuring the frictional force of bearing micro-load. Background technique [0002] There are many ways to measure friction, but no matter what, it is inseparable from the measurement of two parameters, namely pressure and friction. For radial bearings under micro-load conditions, the difficulty in measuring friction lies in two points: the instability of friction, which is often related to the bearing capacity, speed and structure; the tiny friction is difficult to use with ordinary Method determination. Therefore, in order to measure the friction force of radial bearing under micro load, it is necessary to find an accurate measurement method of friction force. Contents of the invention [0003] The purpose of the present invention is to provide a bearing micro-load friction measurement device. [0004] The technical scheme that the present invention solves its tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04G01L3/00
Inventor 张建忠汪久根
Owner ZHEJIANG UNIV
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