Rotary micromotion friction wear test method and device thereof

A fretting friction and wear test technology, applied in the field of tribological technology research of mechanical engineering, can solve the problems of loss and trouble of life, difficulty in reproduction or simulation of manual control, reduction of fatigue life, etc., and achieve a high degree of automation, control and testing. High precision and good reproducibility

Inactive Publication Date: 2008-07-23
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Fatigue caused by fretting: fretting can accelerate the initiation and expansion of cracks, greatly reducing the fatigue life of components, and the fretting fatigue limit can even be lower than 1/3 of the ordinary fatigue limit
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Method used

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  • Rotary micromotion friction wear test method and device thereof
  • Rotary micromotion friction wear test method and device thereof
  • Rotary micromotion friction wear test method and device thereof

Examples

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[0044] Example

Example Embodiment

[0045] A specific implementation of the rotating fretting friction and wear test method of the present invention is:

[0046] a. Clamp the test piece on the plane on the upper fixture, then fix the lower fixture on the mounting plate of the horizontally installed high-precision ultra-low speed rotating motor rotating shaft, use the lower fixture to clamp the spherical lower test piece, and test the spherical downward Align the horizontal centerline of the piece with the rotating shaft of the rotating motor;

[0047] b. Control the up and down, left and right movement of the upper fixture through the data acquisition control system, make the upper and lower test pieces contact and apply the set normal load P, at the same time through the data acquisition control system to control the rotating motor, the lower fixture and its clamping The lower test piece reciprocates at the set rotation angle θ, speed ω, and reciprocation number N to realize the rotational fretting friction between...

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Abstract

The invention relates to a rotary inching friction abrasion test method and a relative device, wherein the method comprises clamping a plane upper sample on an upper clamp, fixing a lower clamp on the horizontal rotation shaft of a high-precision ultra-low speed rotation motor, clamping a spherical lower sample via a lower clamp, aligning the horizontal central line of the lower sample with the rotation shaft of the rotation motor, using a data acquisition and control system to control the up-and-down and left-and-right motions of the upper clamp to contact the upper and lower samples and apply a preset normal load, at the same time, using the data acquisition and control system to control the rotation motor to reciprocally rotate the lower clamp and lower sample at preset rotation argument, rotation speed and times, to realize the rotary inching friction between the upper and lower samples, using a six-dimension force/torque sensor to test and feed the friction force to the data acquisition and control system to be analyzed to obtain a friction force-angle displacement curvature. The inventive method can simply realize small angle rotary inching friction abrasion of material, with high automatic degree, high control and test accuracy and better test data reappearance.

Description

technical field [0001] The invention belongs to the technical research field of tribology of mechanical engineering, in particular to a fretting friction and wear test method and a test device thereof. Background technique [0002] Fretting (Fretting) refers to the relative motion with extremely small amplitude between contact surfaces under the action of alternating loads such as mechanical vibration, fatigue load, electromagnetic vibration or thermal cycle. These contact surfaces are usually static in name, that is, fretting occurs In mechanical parts that are "tightly" fitted. Fretting tribology is a branch of disciplines that studies the mechanism of fretting, damage, testing, monitoring, and prevention. Electrical Engineering etc. Fretting is a friction method with a small relative motion range, and the material damage caused by it is usually manifested in two forms, namely: (1) Wear caused by fretting: fretting can cause surface wear between contact surfaces, resulti...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01M13/00
Inventor 朱旻昊莫继良蔡振兵周仲荣石心余
Owner SOUTHWEST JIAOTONG UNIV
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