Detecting method for bearing outer ring profile tolerance

Abstract

The invention discloses a detecting method for bearing outer ring profile tolerance. A detecting device for bearing outer ring profile tolerance is adopted for detection and the device comprises a fixing device and a portable measuring instrument detachably connected with the fixing device, wherein the portable measuring instrument comprises a driving box, a sensor connected with the driving box and a detecting probe connected with the sensor; the fixing device includes a bearing outer ring positioning and fixing device and a portable measuring instrument fixing device; the bearing outer ring positioning and fixing device includes a supporting rack, a support pin, 90-degree V-shaped positioning blocks and safety devices; the portable measuring instrument fixing device includes a support table, positioning screws, a position fine-adjustment plate, compression screws and a compression plate. Through the adoption of the detection method for the bearing outer ring profile tolerance, reliability and stability of the detection of the bearing outer ring profile tolerance are improved; the method is simple and easy to operate and ensures high stability and reliability of measuring accuracy; the end surface positioning plate and the safety devices can not only realize flat laying of the end surface of the bearing outer ring, but also prevent that the bearing outer ring drops to damage the instrument, so that the detecting method is safe and convenient to operate.

Description

Technical field [0001] The invention relates to the technical field of motor bearings, and more specifically, to the technology of a contour detection device for an outer ring of a motor bearing. Background technique [0002] Bearing is one of the important components 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 correctly installed, as long as it bears the load easily (not greater than a certain persistent limit load value corresponding to the bearing outer ring), then The material of this bearing will never cause fatigue damage. Therefore, as long as the working environment temperature of the bearing is suitable and the range of change is small, there is absolutely no solid dust, harmful gas and moisture intruding into the outer ring of the bearing, the lubrication of the bearing is sufficient and just r...

AI Technical Summary

Problems solved by technology

[0005] For the contour detection of the outer ring of the bearing, it is necessary to evaluate the Pt value of the outer ring contour of the bearing, and the contour shape of the outer ring must also be considered, because the abnormal wear of the outer ring of the bearing is caused by the lubricating oil shared by the drive end of the JD160 series traction motor and the gearbox Gravel pollution, so the contour shape of the worn outer ring of the JD160 series traction motor drive end bearing has its own particularity. It is extremely complicated to analyze the wear trend of the outer ring 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 wear state of the outer ring of the bearing and its reuse life

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