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Variable-gravity orientation typical friction pair sliding abrasion tester and test method

A technology of friction pairs and testing machines, which is applied in the direction of applying repetitive force/pulsation force to test material strength, test wear resistance, and measuring devices, etc. It can solve the problem of poor authenticity, unsatisfactory effectiveness, and inability to solve three-dimensional moving ground with complex trajectories. Simulate problems and other problems to achieve the effect of improving measurement accuracy and strong versatility

Active Publication Date: 2017-09-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water floatation method, the hanging wire counterweight method, and the air floatation platform can simulate the microgravity environment for a long time, their authenticity is poor
Because the existing simulation test methods such as water tanks, suspensions, and air flotation are not only unable to solve the problem of ground simulation of three-dimensional motion with complex trajectories, but also due to factors such as the flexibility of ropes, friction resistance in equipment, and the inertia of large-mass mechanisms make them effective. sex is not ideal

Method used

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  • Variable-gravity orientation typical friction pair sliding abrasion tester and test method
  • Variable-gravity orientation typical friction pair sliding abrasion tester and test method
  • Variable-gravity orientation typical friction pair sliding abrasion tester and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A sliding wear testing machine for a typical friction pair with variable gravity orientation, including a bracket 1, a vacuum box 2, an indexing plate 3, a loading mechanism 4, a sample fixture 5, a sample clamping mechanism 6, and a tester for testing fixed samples and moving parts. The friction sensor 7 of the friction force when the sample is rubbed, the vacuum box is installed on the support through the indexing plate, and the sample fixture and the sample clamping mechanism are installed in the vacuum box;

[0047] The sample fixture includes a clamping bracket 8, a jacket 9, a loading shaft 10, and an upper chuck 11 for clamping and fixing the sample. The jacket is fixed on the clamping bracket, and the loading shaft is connected to the jacket. Connected to the lower part of the loading shaft, the loading mechanism is connected to the loading shaft;

[0048] The sample clamping mechanism includes a sample mounting plate 12 for fixing the movable sample and a sampl...

Embodiment 2

[0070] A sliding wear test method of a typical friction pair with variable gravity orientation, comprising the following steps:

[0071] Vacuum the vacuum box, adjust the indexing plate so that the vacuum box is placed horizontally or at the required inclination angle, and the loading mechanism applies pressure to the sample fixture;

[0072] Start friction: the sample driving device drives the sample mounting plate to make the movable sample reciprocate relative to the fixed sample, thereby causing friction between the fixed sample and the movable sample. During the friction process between the fixed sample and the movable sample, the friction The force sensor detects the friction force when the fixed sample and the movable sample are rubbed;

[0073] After the set time, stop the friction between the fixed sample and the movable sample, and remove the fixed sample and the movable sample;

[0074] Load a new fixed sample to be tested and a movable sample to be tested, vacuumi...

Embodiment 3

[0081] The vacuum box is evacuated, and the loading mechanism applies alternating pressure to the sample holder;

[0082] Start friction: the sample driving device drives the sample mounting plate, so that the movable sample moves back and forth relative to the fixed sample, so that friction occurs between the fixed sample and the movable sample, during the friction process between the fixed sample and the movable sample;

[0083] After the set time, stop the friction between the fixed sample and the movable sample, and remove the fixed sample and the movable sample;

[0084] When it is necessary to carry out tests at different inclination angles, load new fixed samples and movable samples to be tested respectively and adjust the indexing plate so that the vacuum box is at the required inclination angle, and then proceed according to the above process friction;

[0085] Load a new fixed sample and a movable sample to be tested, the vacuum box is evacuated, and the loading mec...

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Abstract

The invention discloses a variable-gravity orientation typical friction pair sliding abrasion tester and a test method. The variable-gravity orientation typical friction pair sliding abrasion tester comprises a bracket, a vacuum box, an index plate, a loading mechanism, a sample fixture, a sample clamping mechanism and a friction sensor for detecting friction force generated by friction between a fixed sample and a movable sample, wherein the vacuum box is arranged on the bracket through the index plate; the sample fixture and the sample clamping mechanism are arranged in the vacuum box. By adopting the variable-gravity orientation typical friction pair sliding abrasion tester and the test method, the change of the friction force of a typical friction pair under different gravity orientations in a vacuum environment can be measured accurately, the influence of a gravity effect on abrasion can be analyzed, and the influence of an alternating load on the abrasion of the typical friction pair can be measured.

Description

technical field [0001] The invention relates to the field of gravity tribology, in particular to a sliding wear test machine and a test method of a typical friction pair with variable gravity orientation. Background technique [0002] With the development of my country's aerospace industry, various space agencies are more and more used in space practice. Space agencies are mainly affected by environmental factors such as microgravity, high vacuum, alternating temperature, and radiation for a long time during their service in space. The research on environmental factors such as high vacuum, alternating temperature, and radiation is relatively extensive and in-depth, and effective protective measures are taken. Gravity, as a body force, is ubiquitous on the ground and has a definite directional effect. The disappearance of the gravitational effect in space will inevitably lead to changes in the mechanical environment of space machines. [0003] To study the effect of gravity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/34G01N3/56G01N3/04
Inventor 屈盛官段勇赖福强李小强
Owner SOUTH CHINA UNIV OF TECH
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