Roller bearing with microtextures on raceway surfaces of inner and outer rings and machining method thereof

Abstract

The invention discloses a roller bearing with microtextures on raceway surfaces of inner and outer rings and a machining method thereof. The roller bearing comprises a bearing inner ring, a bearing outer ring and a rolling body, the raceway surface of the bearing inner ring and the raceway surface of the bearing outer ring are correspondingly provided with a strengthened grinding layer, and the surface of each strengthened grinding layer is provided with a microtexture structure; and the microtexture structure comprises a plurality of vertical-strip-shaped grooves which are evenly arranged in the circumferential direction, the depth of each vertical-strip-shaped groove is 3-4 micrometers, and the distance between every two adjacent grooves is 20-40 micrometers. The machining method comprises the steps that a bearing inner ring blank and a bearing outer ring blank are machined, the roller path surface of the bearing inner ring blank and the roller path surface of the bearing outer ring blank are subjected to strengthened grinding machining, and the bearing inner ring and the bearing outer ring meeting the design size are obtained and then cleaned; and a multi-axis linkage laser machining system is used for carrying out rapid laser milling machining, the microtexture structure is prepared, the roller path surface of the bearing inner ring and the roller path surface of the bearing outer ring are cleaned through ultrasonic waves, and then polishing is carried out.

Description

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AI Technical Summary

Benefits of technology

This patented technology improves bearings' ability to create hydrodynamic lubrications (HDL) between moving parts while preventing damage caused by excessively high loads or low temperatures. It achieves this through adding a strong material inside the races for better stability at higher speeds than traditional methods. Additionally, it provides a special type of texture called 'microgroove', where tiny holes are formed along one side of each line. These small openings allow lubricant to enter these areas instead of being absorbed onto other surfaces causing them to lose their lubricative power over longer periods. Overall, this innovator design enhances durability and reduces maintenance costs compared with current designs.

Problems solved by technology

This patented technical problem addressed in this patents relates to optimizing the quality (strength) or durability of rolling element bearings used under severe conditions like heavy loads, long hours without stopping working due to poor lubrication efficiency. Surface texture structures made from specific materials may be effective when applied during these applications, while others could lead to improved results compared to regular treatment alone.

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