Roller bearing inner and outer ring roller path abrasion resisting structure and machining method thereof

Abstract

The invention provides a roller bearing inner and outer ring roller path abrasion resisting structure. Sawtooth-shaped or wave-shaped pit arrays extending in the circumferential direction are formed in an inner ring roller path and an outer ring roller path of a bearing and composed of cylindrical pits. By means of the roller bearing inner and outer ring roller path abrasion resisting structure, fluid dynamic pressure lubrication is formed on the surfaces of the roller paths of the bearing in the work state, when the roller bearing moves, lubricating oil enters a work area, a certain oil pressure is established for supporting an outer load, an oil film is formed and protects a work face, the friction coefficient is reduced, accordingly, abrasion is reduced, and the service life is prolonged. The sawtooth-shaped or wave-shaped pit arrays are constructed and distributed on the bearing in the width direction in the state that few pit arrays are arranged at the two ends, and many pit arrays are arranged in the middle, shaft end running of a lubricating agent is reduced, sufficient lubricating of the bearing in the width direction is ensured, and the lubricating performance of the bearing is improved. Meanwhile, it can be guaranteed that the abrasion resisting performance of the bearing can be improved through the cylindrical pits, it can be guaranteed that the strength and precision of the bearing are not influenced, and the integral mechanical strength, rigidity and matching precision of the bearing are guaranteed by reducing the number of the pits as much as possible.

Description

technical field [0001] The invention relates to a bearing, in particular to a roller bearing. Background technique [0002] Bearing is an important basic component of various mechanical equipment, its precision, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of the main engine. The main function of the roller bearing is to support the rotating shaft and the parts on the shaft, and maintain the normal working position and rotation accuracy of the shaft. The cylindrical roller and the raceway are line contact bearings, which mainly bear the radial load. Roller bearings are suitable for bearing heavy loads and shock loads, as well as for high-speed rotation. However, roller bearings have high requirements on lubricating performance. The contact parts of the inner and outer rings, rolling elements and cages of the bearings will experience friction, wear, and bonding, which will lead to a reduction in the rolling fatigue...

AI Technical Summary

Problems solved by technology

The ion implantation method will cause surface damage, which must be heated and annealed to restore stability, and the process is complicated

The roughness of the inner and outer rings of the roller bearings treated by the powerful shot peening method is relatively poor, and may affect the strength and precision of the roller bearings. At the same time, the process of strong shot peening is not easy to control

Although the surface film deposition method can improve the strength of cylindrical roller bearings, it cannot ensure that the wear of the roller bearings is reduced during the working process

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