Rolling bearing and manufacturing method for solid lubricated rolling bearing

Abstract

The invention provides a rolling bearing and a manufacturing method for the rolling bearing which is lubricated by a thermoplastic polymer maintaining solid lubrication material. The method provided by the invention comprises the following steps: firstly heating and then cooling a mixed material or compound material of thermoplastic polymer and solid lubrication material; causing the polymer to wrap the solid lubrication material and plasticize in a bearing cavity, thereby forming a plasticized shaped body; and during the working process of the bearing, performing micro-contact and colliding between a maintainer, a roller and the plasticized shaped body, thereby causing the solid lubrication material to drop, forming a solid-transfer lubricating film on a working surface of a bearing part, and realizing the lifetime maintenance-free lubrication of the bearing. Compared with the prior art, the manufacturing method provided by the invention has the advantages that the solid lubrication material can drop from the plasticized shaped body, the solid lubrication material is continuously supplied to the working surface of the bearing, the transfer film lubrication is realized and the lifetime maintenance-free lubrication is realized, so that the manufacturing cost and maintenance cost of the bearing are reduced, and the running reliability and running life of the bearing under the conditions of low temperature, ultralow temperature, high temperature and ultrahigh temperature are greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of special rolling bearings, in particular to a manufacturing method of a rolling bearing lubricated by a solid lubricating material held by a thermoplastic polymer and the rolling bearing. Background technique [0002] Rolling bearings that work in low temperature and ultra low temperature, high temperature and ultra high temperature, radiation, strong chemical medium attack, vacuum and do not allow any oil pollution to the product in process. Since fluid lubricants such as grease and lubricating oil are difficult to adapt to these working conditions, solid Lubricating materials for solid lubrication often become the best or even the only choice. [0003] Solid lubricating rolling bearings need to select solid lubricating materials and introduce them into the bearing. However, the current solid lubricating rolling bearings have the following defects in the selection of solid lubricating materials or the way...

AI Technical Summary

Problems solved by technology

[0008] The first object of the present invention is to provide a solid lubricated rolling bearing manufacturing method to solve the problem of adding solid lubricating powders such as graphite and molybdenum disulfide directly to the bearing when the existing rolling bearings in the prior art are lubricated. Adding, the amount of adding is bound to be more, this will form the aggregation of powder, too much powder wedged between the rolling elements and the convergence gap of the raceway, eliminating the proper working clearance of the bearing, hindering the blocking of rolling elements and retainers The normal operation of the bearing may even cause the bearing to be stuck; if the amount of powder added is too small, it will cause the bearing to be under-lubricated, cause the bearing to wear and fail, and thus affect the technical problem of the bearing's operating life

[0009] The second object of the present invention is to provide a solid-lubricated rolling bearing to solve the problem of adding solid lubricating powders such as graphite and molybdenum disulfide directly to the bearing when the existing rolling bearings in the prior art are lubricated. The amount added is bound to be large, which will form powder aggregation, too much powder wedged between the rolling elements and the convergence gap of the raceway, eliminating the proper working clearance of the bearing, and hindering the normal operation of the rolling elements and cages. If the amount of powder added is too small, it will cause the bearing to be under-lubricated, cause the bearing to wear and fail, and thus affect the technical problem of the bearing's operating life

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