Shaft parts coating friction and wear testing machine

Abstract

The coating friction and wear testing machine for shaft parts of the present invention includes a mounting bracket, a motor, a lever load testing device, an information collection and processing module, a computer and a power switch, wherein the lever load testing device includes a loading lever, a friction contact piece, Leveling unit, loading unit and friction sensing unit. After the sample is installed on the output shaft of the motor, the left and right positions of the loading lever can be adjusted so that the friction contact part is close to the test position of the sample, and then the horizontal balance of the loading lever can be adjusted by using the leveling unit, and by adjusting The upper and lower positions of the friction contact make it just in contact with the sample, then adjust the friction sensing unit so that it is close to the friction contact and close to the loading lever, then apply the load with the loading unit and make the load vertical through the friction contact Act on the sample; after that, the friction data can be collected and analyzed by using the friction sensing unit, information collection and processing module and computer.

Description

technical field [0001] The invention relates to the technical field of coating friction and wear performance testing, in particular to a coating friction and wear testing machine for shaft parts. Background technique [0002] Shafts are common and typical components that are widely used in various mechanical devices. Shaft parts generally have different degrees of friction with their supporting parts during use. Therefore, in order to improve the service life of shaft parts, surface treatment is generally required to improve their wear resistance. At present, surface coating technology is a commonly used surface treatment method. Generally, a layer of wear-resistant coating with high hardness is deposited on the surface of parts by technical means such as electroplating, spraying, physical vapor deposition (PVD) and chemical vapor deposition (CVD). Layers, such as Cr, CrN, TiN, diamond film and diamond-like film (DLC), etc. The pros and cons of the wear resistance of these...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, and the shaft parts coating friction and wear testing machine provided can only solve the problem that the shaft parts coating friction and wear testing machine of the prior art can only be used for the long diameter of the sample. The test of the ring-shaped sample with a small ratio and a hole in the middle cannot test the shaft sample with a large length-to-diameter ratio, and solve the problem that the coating friction and wear tester for shaft parts in the prior art uses surface contact. The problem of poor reliability and repeatability of test results due to testing methods

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