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Measurement device for friction force and wearing process of lubrication film on the condition of different slide-roll ratios

A technology for measuring devices and lubricating films, applied in measuring devices, force/torque/work measuring instruments, testing wear resistance, etc. Simultaneous measurement of friction, film thickness and wear, etc., to achieve controllable exposure time, no acquisition loss, and low distortion

Active Publication Date: 2017-11-28
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current friction and wear measurement device, on the one hand, needs to observe the surface morphology of the sample off-line, and cannot measure the evolution process of the surface morphology during the friction and wear process in real time; on the other hand, it cannot simultaneously realize the Simultaneous measurement of friction, film thickness and wear
The unstable movement of the loading plate of the existing friction and film thickness measurement devices under different slip-roll ratio conditions disturbs the friction measurement. At the same time, the tension line restricts the free lift of the lubricating oil film under the action of tension, making the measurement of film thickness data difficult. precise

Method used

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  • Measurement device for friction force and wearing process of lubrication film on the condition of different slide-roll ratios
  • Measurement device for friction force and wearing process of lubrication film on the condition of different slide-roll ratios
  • Measurement device for friction force and wearing process of lubrication film on the condition of different slide-roll ratios

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The main structure of the measuring device for measuring the friction force and wear process of the lubricating film under different slip-to-roll ratios in this embodiment includes: a support platform 1, a disc drive device 2, a ball-drive loading revolving device 3, a revolving device 4, and abrasion measurement Device 5, translation device 6, speed measuring device 7 and sensor fixing device 8.

[0045] The main structure of the supporting platform 1 includes an upper platform 101, a lower platform 102, a supporting column 103, a supporting leg 104, and a through hole 105. The upper platform 101 and the lower platform 102 are both square-structured metal structures, and the upper platform 101 and The length and width of the lower platform 102 are equal. The upper platform 101 and the lower platform 102 are connected by cylindrical metal support columns 103 at the four corners. The lower side of the lower platform 1 is fixed with support feet 104 for supporting the base. ...

Embodiment 2

[0056] In this embodiment, when measuring the friction and wear of the lubricating oil film with high-stress contact and variable slip ratio, the specific operation steps are as follows:

[0057] (1) Loading of the steel ball: adjust the upper spring support 311 and the cylindrical spring 409 to zero the contact load of the steel ball 301 and the round steel plate 201, and then place the weight 312 on the loading plate 308 to the load required for the experiment;

[0058] (2) Start-up of the equipment: start the fixed disk drive motor 206 and the servo motor 305 to drive the round steel plate 201 and the steel ball 301 to rotate respectively;

[0059] (4) Obtaining, measuring and storing frictional force: under the action of the friction force of the contact pair, the steel ball 301 will have a tendency to rotate, which will drive the ball drive loading device 3 to rotate, and the ball drive loading device 3 will further pass the rotation trend back The rotating shaft 405 is transfer...

Embodiment 3

[0069] In this example, the friction coefficient of the lubricating film and the wear process measurement device under different sliding-roll ratios described in Example 1 is used to measure the friction coefficient under the sliding-roll ratio in the range of 0-2. The test conditions are as follows, using PAO6 lubricant Measured under the working condition of 32N load and 128mm / s entrainment speed, the test results are as follows Picture 10 As shown, the friction coefficient increases significantly with the increase of the slip-to-roll ratio. When the slip-to-roll ratio reaches 0.2, the wear measuring device 5 is used to observe the shape of the steel ball. The test results are as follows Picture 11 with Picture 12 As shown, Picture 11 with Picture 12 These are the optical interference images before and after the oil film friction force measurement experiment. The surface morphology and waviness of the steel ball can be clearly seen before wear. After the wear, it can be s...

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Abstract

The invention belongs to the field for measuring a friction force and wearing of a higher pair contact lubrication film on the condition of different slide-roll ratios, and particularly relates to a measurement device for a friction force and a wearing process of a lubrication film on the condition of different slide-roll ratios. The main structure of the measurement device comprises a supporting platform, a disc driving device, a ball driven loading rotating device, a rotating device, a wearing measuring device, a translation device, a speed measuring device and a sensor fixing device. The rotating device is arranged below the ball driven loading rotating device and is used for supporting and driving the ball driven loading rotating device to rotate so that a steel ball on the ball driven loading rotating device rotates to a glass plate on the wearing measuring device, and then the steel ball is directly used for performing topography measurement on a wearing surface. The measurement device has advantages of ingenious integral design concept, reasonable layout between devices, multiple functions, high flexibility in switching, high convenience in use, effective measurement for the frictional force and the wearing process of an oil film, high practicability, environment-friendly application environment and wide market prosect.

Description

Technical field: [0001] The invention belongs to the field of measuring the friction force and wear of the contact lubrication film of the high pair under different sliding-roll ratios, and particularly relates to a measuring device for the friction force and wear process of the lubricating film under different sliding-roll ratios, which can measure the high-pair contact under different relative motion conditions. The friction and wear process of components is simulated and measured. Background technique: [0002] Exploring the mechanism of friction and wear between relative moving mechanical parts is the focus of research in the field of tribology. Scholars at home and abroad have carried out a lot of research around this problem, hoping to optimize tribology and lubricating medium design based on revealing the friction and wear mechanism. However, in the friction and wear process of parts, the true contact state in the contact pair cannot be directly measured, which brings dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01N3/56G01N3/06
CPCG01L5/0028G01N3/068G01N3/56G01N2203/0641
Inventor 栗心明李宪鹏杨萍郭峰
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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