Elastic rolling bearing with wavy foil

Abstract

The invention discloses an elastic rolling bearing with a circle of wavy foil. The rolling bearing comprises a second outer ring, an inner ring, rolling bodies and a retainer, wherein the circle of wavy foil is arranged between a groove in the outer cylindrical surface of the second outer ring and a groove in the inner cylindrical surface of a first outer ring; when the bearing is loaded, maximum contact stress between each rolling body and an inner roller path and between each rolling body and an outer roller path can be lowered by virtue of the deformation of the foil; the contact deformation is alleviated; the extrusion rupture of a lubricating oil film and the rapid friction increase are alleviated when a load is heavy; and thus the further temperature rise due to poor lubrication is avoided; when the bearing is heated so as to enable the parts to be subjected to heat expansion, the yield action can be caused by that the foil deforms, so that the space for expansion of other parts is provided; the deformation and internal stress of the two outer rings, the inner ring and the rolling bodies are reduced; moreover, the impact of the polygon effect of the rolling bodies on the axial system vibration also can be effectively alleviated by virtue of the deformation of the foil.

Description

technical field [0001] The invention relates to a rolling bearing, in particular to an elastic rolling bearing with a corrugated foil. Background technique [0002] When the rolling bearing works under load, the rolling elements and the inner and outer rings will undergo elastic deformation, so that an elastohydrodynamic lubricating oil film will be formed in the bearing. The contact stress is mainly distributed in the contact area between the rolling elements and the inner and outer rings during the motion process. The contact stress has an important impact on the contact fatigue and wear of the bearing, and determines the reliability and life of the bearing to a large extent. For rolling bearings working under heavy load conditions, the rolling elements are under high pressure for a long time. The contact stress between the rolling elements and the raceway is too large, causing the lubricating oil film to rupture, causing the friction force to be too large and the bearing ...

AI Technical Summary

Problems solved by technology

Excessive deformation of the rolling elements will also cause the bearing to fail to rotate

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