Ball bearing with micro-texture on raceway surfaces of inner ring and outer ring and processing method thereof

Abstract

The invention discloses a ball bearing with micro-texture on raceway surfaces of an inner ring and an outer ring and a processing method thereof. The ball bearing comprises a bearing inner ring, a bearing outer ring and a rolling body, and the raceway surface of the bearing inner ring and the raceway surface of the bearing outer ring are both provided with reinforced grinding layers; One or more groups of micro-texture structures which are arranged along the axial direction of the bearing are arranged on the surface of the reinforced grinding layer, each group of micro-texture structure comprises a plurality of pits which are uniformly arranged along the circumferential direction, the pits are locally spherical, and openings of the pits face a tangent line which is vertical to the surface of a raceway. The method comprises the following steps that the bearing inner ring and the bearing outer ring are processed according to the design size of the ball bearing; reinforced grinding processing is carried out, and then cleaning is carried out; a multi-axis linkage laser machining system is used for conducting rapid laser milling machining, one or more groups of micro-texture structures arranged in the axial direction of the bearing are prepared, and each group of micro-texture structure comprises the multiple pits evenly arranged in the circumferential direction; ultrasonic cleaning is carried out and then polishing is carried out.

Description

technical field [0001] The invention relates to the technical field of ball bearings, in particular to a ball bearing with a micro-texture on the raceway surface of an inner and outer ring and a processing method thereof. Background technique [0002] Bearings are the core components of mechanical equipment. Severe friction and wear will not only reduce their service life, but also directly affect the overall operation safety and service life of major equipment. [0003] With the continuous improvement of manufacturing technology, in order to further optimize the physical properties of bearings, such as load capacity, wear resistance and friction coefficient, the existing technology proposes a processing method for surface texture on the workpiece, surface micro-texture Technology refers to the processing technology that uses special processing methods to process microstructures such as pits and protrusions on the surface of mechanical parts to improve the tribological prope...

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Problems solved by technology

[0004] Among them, the above-mentioned surface structure is semi-elliptical as a whole, located at the entrance of the bearing development plane, and is not evenly arranged on the raceways of the inner ring and outer ring of the bearing, and the texture of the circular pits is arranged in a matrix to form a semi-elliptical surface Texture, the semi-elliptical surface texture starts to converge from the lubricating oil inlet of the bearing. Although it can obtain greater bearing capacity and smaller friction coefficient, it can only reduce the oil film fluid near the boundary of the bearing. The limiting effect of the dynamic pressure peak makes it difficult to lubricate the entire raceway. It is not suitable for rolling bearings, such as ball bearings, and cannot bring beneficial effects such as improving lubrication performance, load resistance and service life for ball bearings.

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