A method for measuring the profile of bearing rollers with cages

Abstract

The invention provides a detection method for the roller profile tolerance of a bearing with a holding rack. A detecting device for the roller profile tolerance of the bearing with the holding rack is adopted by the method for detection. The detecting device comprises a fixing device and a portable measuring instrument, wherein the portable measuring instrument comprises a driving box, a sensor connected with the driving box, and a point gauge connected with the sensor; the fixing device comprises a bearing positioning fixing device, and a portable measuring instrument fixing device connected with the bearing positioning fixing device; the bearing positioning fixing device comprises a support frame, support pins and a stop pin; the portable measuring instrument fixing device comprises a support table, positioning bolts, a position fine adjusting plate, compression bolts and a compression plate. Through the detection method, the reliability and the stability of the detection of the roller profile tolerance of the bearing with the holding rack are improved; the operation is simple and easy, and the measuring precision is kept stable and reliable; moreover, as the bearing holding rack rotates on two support pins conveniently, the detection on multiple rollers is facilitated, the labor is saved, and the problem of collision damage caused by the direct contact of the bearing roller and a table surface is prevented.

Description

technical field [0001] The invention relates to the technical field of motor bearings, and more specifically, relates to a detection technology for the profile of motor bearings. Background technique [0002] Bearing is one of the important parts of traction motor, and its reliability directly affects the safe operation of traction motor. According to the latest bearing fatigue life theory, a bearing with excellent design, excellent material, well-manufactured and installed correctly, as long as the load it bears is easy enough (not greater than a certain permanent limit load value corresponding to the bearing), the bearing will The material will never suffer fatigue damage. Therefore, as long as the working environment temperature of the bearing is suitable and does not change much, there is absolutely no solid dust, harmful gas and moisture intruding into the bearing, the lubrication of the bearing is sufficient and just right, the lubricant is absolutely pure without imp...

AI Technical Summary

Problems solved by technology

[0005] For bearing profile detection, it is necessary to evaluate the Pt value of the bearing roller profile, and also consider the profile shape of the roller and the outer ring, because the abnormal wear of the bearing is caused by the grit pollution of the lubricating oil shared by the drive end of the JD160 series traction motor and the gearbox Therefore, the contour shape of the bearing roller at the drive end of the JD160 series traction motor after wear has its particularity. It is extremely complicated to analyze the wear trend of the bearing based on the Pt value and shape of the contour.

And because of the lack of previous profile data accumulation, it is also difficult to conduct research on the bearing wear state and its reuse life

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