Bus section symmetric-convexity tapered roller and finish grinding method

Abstract

The invention relates to the field of manufacture of bearing rollers, and provides a bus section symmetric-convexity tapered roller and a finish grinding method. A bearing of the bus section symmetric-convexity tapered roller is low in temperature rise, vibration and noise and long in service life, requirements on processing quality can be met, and the processing quality can be improved. A bus of the bus section symmetric-convexity tapered roller comprises a middle convex wire and two end convex wires, wherein the curvature radius of each end convex wire is smaller than that of the middle convex wire; and two ends of the middle convex wire are smoothly connected with one ends of the end convex wires respectively. A grinding wheel with a trimmed recess corresponding to the bus is used for performing finish grinding on the bus section symmetric-convexity tapered roller. The pressure of the edge of the bus section symmetric-convexity tapered roller is dispersive, the dispersive pressure is beneficial to elastic fluid lubrication, the bearing is low in temperature rise, vibration and noise and long in service life, and by the finish grinding method, the requirements on the processing quality of the bus section symmetric-convexity tapered roller can be met, and the processing quality can be improved.

Description

technical field [0001] The invention relates to the field of bearing roller manufacturing, in particular to a kind of edge pressure dispersion which is beneficial to the formation of elastic fluid lubrication and has lower temperature rise, vibration and noise of the bearing and longer service life of the bearing and can meet and improve the convexity of the tapered roller. Quality generatrix segmented symmetrical convex tapered rollers and final grinding method. Background technique [0002] Tapered rollers are an important part of tapered roller bearings. In order to improve the service life of tapered rollers and tapered roller bearings, reducing the edge stress at both ends of tapered rollers is the main method; The elastohydrodynamic pressure distribution has pressure peaks at both ends of the rollers, and there is a stress concentration phenomenon on the surface of the rollers; for this reason, it has been recognized by the industry that the tapered roller generatrix i...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the current convex tapered rollers that the edge pressure is still relatively large, which is not conducive to the formation of elastic fluid lubrication, and the temperature rise, vibration, and noise of the bearing are high, and the service life of the bearing is short. The processing method has the disadvantage that it is difficult to meet the processing quality of the tapered roller crown. It provides an edge pressure dispersion that is conducive to the formation of elastic fluid lubrication, and the temperature rise, vibration, and noise of the bearing are low and the service life of the bearing is long. It can meet and improve Processing quality of tapered roller crown, generatrix segmental symmetrical crown tapered roller and final grinding method

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