Rolling bearing lubricating oil film thickness testing device and testing method

Abstract

The invention discloses a rolling bearing lubricating oil film thickness testing device and a testing method thereof, comprising high and low-speed electric spindles arranged axially opposite each other on a bracket, the front end of the high-speed electric spindle is connected with a rolling body, and the front end of the low-speed electric spindle is connected with the ring of the bearing to be tested The rolling body applies a radial load to the tested bearing ring body through the loading mechanism; the high-speed and low-speed electric spindles are equipped with speed sensors, which are connected to the data acquisition and processing system through the frequency converter; the contact position between the tested bearing ring body and the rolling body A lubrication device is installed nearby to change the lubrication condition; the inner surface of the test bearing ring is pasted with an ultrasonic sensor, and the signal line is connected to the slip ring through the hole opened inside the fixture and the tie rod, and the signal is transmitted to the ultrasonic data acquisition and processing system. The film thickness measurement technology obtains the real-time film thickness value of the measuring point of the contact part of the rolling bearing under the action of the slip factor.

Description

technical field [0001] The invention belongs to rolling bearing test technology, in particular to an oil film thickness testing device and method for a rolling bearing slip test bench. Background technique [0002] Rolling bearings are an important mechanical basic part that is widely used. The development of modern industry has put forward higher requirements for the working performance of rolling bearings, and bearings with high speed and long life are more and more favored by users. However, the slipping and scratching of light-loaded bearings under high-speed conditions have always been the key factors affecting the service life of bearings. Therefore, it is particularly important to study the mechanism of sliding failure of rolling bearings. The applicant has developed a simple and feasible rolling bearing slip test bench, which can be used to analyze the deep-seated mechanism of rolling bearing slip failure under the action of various parameters, and then optimize th...

AI Technical Summary

Problems solved by technology

In the research process of rolling bearing slipping failure, it is found that the thickness distribution and performance of the bearing lubricating film is a key performance index reflecting the lubrication state of the bearing, especially whether it is cracked or not is very important to reveal the essential mechanism of rolling bearing slipping failure, but at present There is a lack of effective technical support for the accurate acquisition of the extremely thin oil film thickness of the rolling bearing lubricating film

Images