Self-aligning roller bearing, bearing, and self-aligning roller bearing processing method

Abstract

Provided are a bearing roller which can be formed with high accuracy and is capable of achieving a prolonged life, a processing method for a bearing roller, and a bearing which is capable of reducing rotational torque and enhancing rotational accuracy. Under a state in which the bearing roller is rotated about an axis of the bearing roller while being supported through intermediation of center holes (23, 24) in both end surfaces and held through intermediation of an outer diameter surface (20a), both the end surfaces (20b, 20c) and end-surface-side round portions (21b, 22b) at round portions (21, 22) are grinded. Further, under a state in which the bearing roller is rotated about the axis of the bearing roller by a driving force transmitted from at least one of both the end surfaces (20b, 20c) while being supported through intermediation of the center holes in both the end surfaces, the outer diameter surface (20a) and outer-diameter-surface-side corner portions (21a, 21b) at the round portions (21, 22) are grinded.

Description

technical field [0001] The invention relates to a roller for a bearing, a bearing and a processing method for the roller for the bearing. Background technique [0002] Bearings include cylindrical roller bearings using cylindrical rollers, tapered roller bearings using tapered rollers, spherical roller bearings using spherical rollers, and the like. Cylindrical roller bearings are bearings in which the inner ring is in line contact with the rollers and the outer ring is in line contact with the rollers. Cylindrical roller bearings are suitable for heavy loads with large radial load capacity. Tapered roller bearings are tapered bearings in which the raceway of the inner ring, the raceway of the outer ring, and the rollers are each cut off. In addition, the apexes of the respective cones of the raceway of the inner ring, the raceway of the outer ring, and the rollers are designed to converge on one point on the axis. The raceway of the outer ring of the spherical roller bea...

AI Technical Summary

Problems solved by technology

Therefore, it may not be possible to provide high-precision products (rollers)

[0010] In addition, in the method described in Patent Document 1, since the cutting direction is unidirectional, it is not possible to process the fillets Rb and Rc at once (simultaneously).

Therefore, either one of the first rounded portion Rb and the second rounded portion Rc may not be smooth and continuous.

[0011] Moreover, in such Figure 13 In the grinding wheel 10 shown, depending on the size of the raw material, the overall length may vary if the outer diameter is the same, and the outer diameter may vary if the overall length is the same.

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