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Half-elliptic distribution textured surface for radial sliding bearing

A semi-elliptical, radial sliding technology, used in sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as no design scheme, and achieve reduced restriction, small friction coefficient, and high hydrodynamic pressure. Effect

Active Publication Date: 2018-09-25
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] However, there is no widely accepted design scheme for the arrangement design of the circular pit texture in a specific friction pair

Method used

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  • Half-elliptic distribution textured surface for radial sliding bearing
  • Half-elliptic distribution textured surface for radial sliding bearing
  • Half-elliptic distribution textured surface for radial sliding bearing

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0017] The invention optimizes the texture distribution on the surface of the bearing bush of the radial sliding bearing through a genetic algorithm to improve its tribological properties. Design drawing such as figure 1 shown. A semi-elliptical radial plain bearing texture arrangement at the entrance to the bearing deployment plane. Among them, the circular pit texture is based on the arrangement of a rectangular grid array, and the semi-ellipse with the minor semi-axis and major semi-axis lengths equal to 1 / 2 of the bearing width and 1 / 3 of the circumference is set as the textured surface range.

[0018] figure 2 is the histogram of the calculated tribological properties of bearings with semi-elliptical textured surface, semi-textured surface and smooth surface (B / L=0.47, ε=0.1). It can be seen that the semi-elliptical radial sliding be...

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Abstract

The invention provides a half-elliptic distribution textured surface for a radial sliding bearing. Half-elliptic texture distribution is located at an entrance of the radial sliding bearing; the distribution takes a round pit texture, which is distributed in a rectangular grid array, as the foundation; the short semi-axis of the half-elliptic distribution is equal to 1 / 2 of the width of the bearing and the long semi-axis of the half-elliptic distribution is equal to 1 / 3 of the perimeter of the bearing. The half-elliptic distribution textured surface has the function of improving the tribological property of the bearing; a hydrodynamic pressure effect which is more remarkable relative to the surface of a smooth bearing is generated, and a higher bearing force and lower friction resistance are obtained; the thickness of an oil film of a friction pair is effectively increased and the probability of breaking the oil film (to be in direct contact with metal) is reduced; the operation reliability is improved and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of tribological characteristics of mechanical partners, in particular to a semi-elliptical distribution textured surface for radial sliding bearings. technical background [0002] Texturing technology refers to the processing of microstructures such as pits, grooves or protrusions on the surface of mechanical sliding bearings by physical or chemical methods at the micro-nano scale. As an effective method for modifying frictional support surfaces, textured surfaces have been widely used in engineering fields such as bearings, seals, and cylinders, and have achieved good tribological improvement effects, thereby effectively improving the reliability of mechanical systems and extending operating life. Generally in engineering, a circular pit texture with an area ratio of 5%-15%, a diameter of 100-1000μm, and a depth-to-diameter ratio of 0.01-0.05 is obtained as a better textured surface design through trial an...

Claims

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Application Information

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IPC IPC(8): F16C17/02F16C33/04
CPCF16C17/02F16C33/04
Inventor 张辉刘洋董光能
Owner XI AN JIAOTONG UNIV
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