Retainer-free surface micro-texture self-lubricating cylindrical roller bearing with isolator

Abstract

The invention discloses a retainer-free surface micro-texture self-lubricating cylindrical roller bearing with an isolator. A traditional continuous retainer is removed, a novel discrete isolator is utilized for isolating all cylindrical rollers, the isolator is outwards pushed due to the centrifugal action during high-speed rotation, and line contact and rolling friction exist between the isolator and the cylindrical rollers, so that the sliding friction generated by the original retainer is eliminated, the frictional wear inside the bearing is reduced, and the limit rotating speed is increased; and micro-structure meshes or pits are machined on the surfaces of the cylindrical rollers for storing oil or a lubricating agent, so that the self-lubricating purpose is achieved by utilizing thehydrodynamic effect and the thermal expansion and cold contraction principle in the bearing working process. Compared with a traditional cylindrical roller bearing, the retainer-free surface micro-texture self-lubricating cylindrical roller bearing has the advantages of being low in friction, high in rotating speed, small in temperature rise, long in service life and self-lubricating; and the self-lubricating cylindrical roller bearing is simple in structure and has good practical value in heavy-load high-rotating-speed mechanical equipment.

Description

technical field [0001] The patent of the invention relates to the field of cylindrical roller bearings without cages, in particular to a self-lubricating cylindrical roller bearing without cages with a micro-texture on the surface of the cylindrical rollers. Background technique [0002] Cylindrical roller bearings are an important mechanical basis and are widely used in various fields of national economy and national defense. The rollers of cylindrical roller bearings are in line contact with the raceway, with large radial load capacity and high friction. They are often used in large and medium-sized motors, machine tool spindles, lifting and transportation machinery, etc. that need to bear heavy loads and impact loads and have low speed requirements. field. However, with the rapid development of industry, the lower limit speed of cylindrical roller bearings can no longer meet the requirements of various types of mechanical equipment. In addition, during the use of cylind...

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Problems solved by technology

[0003] The purpose of the patent of the present invention is to design a self-lubricating cylindrical roller bearing with micro-texture on the surface without a cage, remove the traditional continuous cage, and use a new type of discrete separator to separate the cylindrical rollers , and form rolling friction to solve the problem that the internal friction of cylindrical roller bearings is large in actual operation, which limits its limit speed. The micro-textured mesh processed on the surface of cylindrical rollers is used to improve the lubrication characteristics of the bearings and realize the smoothness of cylindrical roller bearings. self-lubricating

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