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Force measuring device for friction and wear testing machine and friction and wear testing machine

A technology of friction and wear test and force measuring device, which is applied in the direction of measuring device, adopting mechanical device, testing wear resistance, etc. It can solve the problems that it is difficult to effectively measure the change of friction force, affect the true accuracy of data, and affect the accuracy of testing, etc. , to achieve the effect of saving materials and self-weight, improving test accuracy and stability

Active Publication Date: 2021-09-17
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the force sensor or force measuring device itself will produce a large deformation after being stressed, which will affect the accuracy of the test, and the test accuracy is not high; in addition, due to the low response frequency of the common strain gauge force measuring device or force sensor, It is difficult to effectively measure the change of friction force under the vibration of high frequency and low displacement amplitude, thus affecting the true accuracy of the data

Method used

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  • Force measuring device for friction and wear testing machine and friction and wear testing machine
  • Force measuring device for friction and wear testing machine and friction and wear testing machine
  • Force measuring device for friction and wear testing machine and friction and wear testing machine

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Experimental program
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Effect test

Embodiment 1

[0028] see figure 1 , in one embodiment, a friction and wear testing machine force measuring device, mainly used for fretting friction and wear, the force measuring device includes a base 11, a bearing 9, a first piezoelectric ceramic sensor 19, a second piezoelectric ceramic sensor 5. Piezoelectric ceramic sensor holder 2, first support block 20, second support block 4, first threaded rod 1, second threaded rod 18, cantilever beam 6, fixture; first piezoelectric ceramic sensor 19 and second The measuring range of piezoelectric ceramic sensor 5 is 0~45N;

[0029] Wherein, a shaft is arranged inside the base 11, and two bearings 9 are sleeved on both ends of the shaft respectively, and the bearing 9 and the shaft are in interference fit, and the piezoelectric ceramic sensor fixing seat 2 is fixedly connected to the bearing 9;

[0030] The surface of the piezoelectric ceramic sensor holder 2 is in the shape of a groove, one end of the groove is fixed to the first support block ...

Embodiment 2

[0042] This embodiment provides a friction and wear testing machine, including the force measuring device of the friction and wear testing machine in Embodiment 1.

[0043] like Figure 4 As shown, the friction and wear testing machine comprising the force measuring device in Embodiment 1 includes a fixed base 13, a driving part 15, a sample stage 14, and a distance adjustment device 16, and the base 11 of the force measuring device is provided with a hole through which The shaft on the distance adjustment device, the force measuring device can move on the shaft of the distance adjustment device, the fixture sleeve 8 contacts the sample, the sample is installed on the sample table 14, and the output shaft of the driving part is fixed on the sample table 14, which is used to drive the sample table 14 moves, so that the friction pair installed in the fixture cover 8 and the sample have relative motion, and then the pressure loaded on the sample is the weight 17 placed on the can...

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Abstract

The invention discloses a force measuring device of a friction and wear testing machine, that is, a friction and wear testing machine. The force measuring device includes a base, a bearing, a first piezoelectric ceramic sensor, a second piezoelectric ceramic sensor, a fixing seat of the piezoelectric ceramic sensor, a A support block, a second support block, a first threaded rod, a second threaded rod, a cantilever beam, and a fixture; wherein, a shaft is arranged inside the base, and two bearings are respectively sleeved on both ends of the shaft, and the piezoelectric ceramic sensor fixing seat Fixed on the bearing; one end of the piezoelectric ceramic sensor holder is fixed to the first support block, the other end is fixed to the second support block, and each support block is horizontally threaded to the threaded rod; the opposite sides of the two support blocks are respectively fixed A piezoelectric ceramic sensor is connected; the cantilever beam is horizontally fixed on the piezoelectric ceramic sensor fixing seat, the fixed ends of the cantilever beam respectively fix the piezoelectric ceramic sensors, and the suspension ends of the cantilever beam are fixedly connected to the fixture.

Description

technical field [0001] The invention belongs to the field of design and application of a friction and wear testing machine, in particular to a friction and wear testing machine force measuring device and a friction and wearing testing machine. Background technique [0002] Fretting refers to the relative motion with extremely small amplitude (usually micron level) between two surfaces or interfaces that are in contact with each other due to mechanical vibration, electromagnetic vibration, fluid motion, and thermal cycle. Fretting may cause damage to the contact interface, which in turn causes problems such as occlusion, loosening, energy loss, and noise pollution sources, or causes fatigue cracks to initiate and expand, reducing the fatigue life of components. Fretting damage is common in the nuclear power industry, aerospace, power systems, bridges, transportation, and artificial implants. Because of its extremely small displacement amplitude and high vibration frequency, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56G01N19/02
CPCG01N3/56G01N19/02
Inventor 李浩徐易卓孙奇徐小军樊小强朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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