A light interference linear oil film thickness detection method for thrust ball bearings

Abstract

The invention discloses a method for detecting the thickness of a linear oil film by optical interference of a thrust ball bearing. The existing optical interference film thickness measurement method based on the ball and disk cannot accurately reflect the thickness of the oil film in the bearing. In the present invention, after filling the gap between the steel ball and the cage with lubricating grease, the steel ball assembly of the thrust ball bearing cage is attached to the ring of the steel thrust ball bearing, so that the ring of the glass thrust ball bearing and the thrust ball bearing are maintained The steel ball assembly of the frame bears the load; then, the high-speed camera of the microscope sequentially photographs the distance between the steel ball in the steel ball assembly of the thrust ball bearing cage and the raceway of the glass thrust ball bearing ring under the rotating and stalled states of the glass thrust ball bearing ring Oil film light interference image, and observe the shape of the second phase grease pool; finally, remove the thrust ball bearing cage steel ball assembly and steel thrust ball bearing ring, and take pictures of the grease whiskers in the raceway of the steel thrust ball bearing ring , to get the mean value of the whisker angle. The invention can analyze the state of the oil film and the backflow mechanism of the base oil during the actual operation of the bearing.

Description

Technical field [0001] The present invention belongs to the field of testing, and the thickness detection of bearing oil film is involved, and more particularly to a thickness detecting of a thrust ball bearing light interference linear oil film. Background technique [0002] The rolling bearing is one of the basic components in the mechanical equipment. It has many advantages in the sliding friction factor, high industrial standardization, compact arrangement and easy launch, which is widely used in industrial, transportation, agriculture, home appliances, aerospace and defense security, etc. Many field applications have a significant impact on the world-saving machinery industry 4.0. As the most strategic basic industry in China, it is an object of my country's key attention and research. Based on the development of more than 60 years of development, my country's bearing industry already has a significant self-developing capabilities, strong technical capabilities and large pro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing optical interference film thickness measurement method based on the ball and disc cannot accurately reflect the oil film thickness state in the actual bearing, and to provide a thrust ball bearing light interference linear oil film thickness detection method, which can simulate the thrust ball bearing Complicated working conditions when placed vertically, and to detect the thickness of the oil film between the raceway and the roller at different positions, to conduct online observations of the grease supply at the entrance of the point contact area at different speeds and the evolution of the overall grease pool, and to monitor the After the test, the lubrication distribution form (grease whisker) in the bearing is measured and observed

Images