Test device for accurately measuring static friction coefficient

A static friction coefficient and precise measurement technology, which is applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of inaccurate static friction coefficient, inability to measure static friction coefficient, and inability to guarantee the contact surface, so as to improve measurement accuracy and improve measurement reliability performance, to achieve the effect of measurement

Inactive Publication Date: 2021-09-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. It cannot be guaranteed that the pressure applied between the contact surfaces is a positive pressure, that is, it cannot be guaranteed that the applied pressure can be applied vertically to the contact surface, resulting in inaccurate measured static friction coefficients
[0005] 2. The temperature load between the contact surfaces is constant, ignoring the influence of temperature changes on the static friction coefficient, and it is impossible to measure the static friction coefficient between the contact surfaces under different temperature loads

Method used

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  • Test device for accurately measuring static friction coefficient
  • Test device for accurately measuring static friction coefficient
  • Test device for accurately measuring static friction coefficient

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0027] The invention provides a test device for accurately measuring the coefficient of static friction, and the technical scheme for realizing the invention is as follows:

[0028] as attached image 3 , 4 As shown, a test device for accurately measuring the ...

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PUM

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Abstract

The invention discloses a test device for accurately measuring a static friction coefficient. The test device comprises a pressure loading assembly, a pressure sensor, a pressure adjusting assembly, a rolling bearing pair assembly, a temperature adjusting assembly, a thrust loading assembly, a thrust sensor, a thrust adjusting assembly and a base. The upper end of the pressure sensor is connected with the pressure loading assembly, and the lower end is connected with the pressure adjusting assembly; the lower end of the pressure adjusting assembly is connected with the rolling bearing pair assembly; a contact surface is formed between the rolling bearing pair assembly and the temperature adjusting assembly; the left end of the thrust sensor is connected with the thrust adjusting assembly, and the right end of the thrust sensor is connected with the thrust loading assembly; and all the assembliesare integrally mounted on the base. The device is convenient to operate, and can accurately measure the static friction coefficient between the contact surfaces of two objects under different temperature conditions.

Description

technical field [0001] The invention belongs to the field of mechanical design, in particular to a test device for accurately measuring the coefficient of static friction. Background technique [0002] As one of the basic properties of material contact, friction is usually measured by the coefficient of dynamic friction and the coefficient of static friction. A lot of research has been done on the measurement of the coefficient of dynamic friction at home and abroad, and corresponding testing instruments have been developed. The measurement technology conditions are quite mature, but the research on the measurement device of the coefficient of static friction is rarely involved. The coefficient of static friction is closely related to the shape characteristics of the contact surfaces, temperature load, and the normal pressure on the contact surfaces. Therefore, in order to more accurately measure the coefficient of static friction between the contact surfaces, it is urgent t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 张之敬李二波王子夫陈骁熊健
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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