Special-shaped micro stepped bearing

Abstract

The invention provides a special-shaped micro stepped bearing. The special-shaped micro stepped bearing comprises a static flat plate and a moving flat plate which are paired. The static flat plate is provided with a stepped surface. The convex surface of the static flat plate is coated with an oleophylic coating. The concave surface of the static flat plate is coated with an oilphobic coating. The motion direction of the moving flat plate is that the convex surface of the static flat plate points to the concave surface of the static flat plate. A clearance between the paired static flat plate and moving flat plate is full of lubricating oil. The clearance between working surfaces of the paired static flat plate and moving flat plate is in a nanometer scale. The special-shaped micro stepped bearing is formed by the paired static flat plate and moving flat plate. The special-shaped micro stepped bearing is suitable for occasions where surface clearances of bearing inlet areas are smaller than surface clearances of bearing outlet areas, and a traditional stepped bearing cannot be suitable for the occasions. The bearing is simple in structure, easy to manufacture and low in cost, has certain bearing capacity, is provided with a good lubricating oil film and can achieve good antifriction and wear-resisting effects.

Description

technical field [0001] The invention relates to a special-shaped miniature stepped bearing. Background technique [0002] Bearings are important mechanical components used to support shaft parts, and are divided into sliding bearings and rolling bearings. There are the following main performance requirements for bearings: support accuracy, support rigidity, low friction coefficient and wear resistance. This requires the bearing to be a very precise mechanical part, and also requires it to have a large enough load-carrying capacity. In order to achieve good anti-friction and wear resistance, the bearing also needs to have good lubrication performance. So far, although the bearing technology is relatively mature, it is all based on the traditional lubrication theory. At present, rolling bearings and sliding bearings are used in different occasions and each has its own advantages. Since the present invention relates to sliding bearings, the existing types and technologies o...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a special-shaped miniature stepped bearing, which solves the problems limited by the traditional fluid lubrication theory in the prior art; because according to the traditional fluid lubrication theory, the lubricating oil is brought in from the small section of the divergent wedge-shaped gap, and It is brought out from its large cross-section, and the lubricating oil is not squeezed in such a gap, so it cannot form oil pressure and has no load-bearing capacity, which brings about the problem that a lubricating oil film cannot be formed in the divergent wedge-shaped gap

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