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Composite textured surface for radial sliding bearing

A radial sliding, composite weaving technology, applied in the direction of bearing components, shafts and bearings, rolling resistance optimization, etc., can solve the problem that texture can not achieve friction and wear performance, achieve significant hydrodynamic pressure effect, and improve tribological properties , the effect of prolonging the service life

Active Publication Date: 2021-11-26
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is no agreement on the optimal shape and arrangement, such as a single circular, triangular, rhombus texture can not achieve the best friction and wear performance, and there are certain limitations

Method used

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  • Composite textured surface for radial sliding bearing
  • Composite textured surface for radial sliding bearing
  • Composite textured surface for radial sliding bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 As shown in , a composite textured surface for radial sliding bearings is set on the inner surface of the bearing bush. The composite texture is distributed at the entrance of the radial sliding bearing, starting from the thickest oil film position to start setting the texture array, to position terminates, the texture array is a rectangular matrix, to The set length between them accounts for one-third of the circumferential length of the bearing (2πR); the area density of the composite texture is 10%, and it consists of two textures with different shapes, the two shapes are rhombus and crescent, The rhomboid texture and the crescent texture are alternately arranged in the axial direction (λ), and in the circumferential direction Each row of textures above has the same shape and is arranged parallel to the moving direction of the radial sliding bearing. combine figure 2 The shape design drawing of the middle texture, the length ratio between the...

Embodiment 2

[0028] A composite textured surface for radial sliding bearings, which is arranged alternately with diamond-shaped and crescent-shaped textures, and its setting position, array arrangement, and shape and size are the same as those described in Example 1, changing the diamond-shaped texture and the setting depth of the crescent-shaped texture are both 12 μm. At this time, the bearing capacity of the diamond-shaped and crescent-shaped composite textured bearings is 4.5097N, and the friction coefficient is 0.3146, which is 1.15% higher than that of the smooth bearing, and the friction coefficient is reduced by 1.44%.

Embodiment 3

[0030] A composite textured surface for radial sliding bearings, which is set on the inner surface of the bearing bush, the composite texture is distributed at the inlet of the radial sliding bearing, starting from the thickest oil film position to start setting the texture array, to position terminates, the texture array is a rectangular matrix, to The set length between them accounts for one-third of the circumferential length of the bearing (2πR); the area density of the composite texture is 10%, and it is composed of two textures with different shapes, the two shapes are rhombus and leaf shape, The rhomboid texture and the leaf-shaped texture are alternately arranged in the axial direction (λ), and in the circumferential direction Each row of textures above has the same shape and is arranged parallel to the moving direction of the radial sliding bearing. The length ratio between the major axis and the minor axis in the rhombus texture is 3:2, and when it is arrange...

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Abstract

The invention discloses a composite textured surface for a radial sliding bearing. The composite textured surface is arranged on the inner surface of a bearing bush. According to the composite textured surface, composite textures are distributed at an inlet of the radial sliding bearing and are composed of at least two textures in different shapes, the textures in different shapes are alternately arranged and are distributed in a rectangular matrix mode, the overall width of the composite textures accounts for one third of the length of the bearing, the area density of the textures is 5%-15%, the depth of the textures is 5-30 micrometers, and the areas of the textures in different shapes are equal. The composite textured surface has the advantages that the tribological performance of the radial sliding bearing is favorably improved, the fluid dynamic pressure effect which is more remarkable compared with that of a smooth bearing surface and a single-shape bearing surface is generated, lower friction force and higher bearing capacity are obtained, the oil film thickness of a friction matching pair is effectively increased, the possibility of oil film (direct metal contact) fracture is reduced, and the service life of the radial sliding bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of tribological characteristics of mechanical partners, in particular to a composite textured surface for radial sliding bearings. Background technique [0002] Surface texturing technology is a technology for processing microstructures such as pits, grooves or protrusions on the mechanical sliding textured surface by physical or chemical methods at the nanoscale or micron scale; as an effective method for modifying the friction support surface , this technology has been widely used in bearings, seals, cylinders and other fields, and has achieved good tribological improvement, thus effectively improving the reliability of the mechanical system and prolonging the service life; in general engineering, after theoretical research and experiments Trial and error, it is found that the area ratio is 5%-15%, and the friction characteristics are better when the depth is 10-60 microns; usually, the traditional texture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/04
CPCF16C33/04Y02T10/86
Inventor 王丽丽张伟王珉葛雪段敬东
Owner SHANDONG UNIV OF SCI & TECH
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