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Grease-lubricated ball bearing with micro-textured self-propelled oil droplets and its micro-textured processing method

A micro-textured, self-driven technology, applied in the direction of ball bearings, shafts, bearings, bearing components, etc., can solve the problem of affecting the safety and reliability of rolling bearing fatigue life, changing the rolling friction conditions of bearing rolling elements, and research on the characteristics of lubricating oil droplet return and other problems, to achieve the effect of improving the lubrication effect and utilization rate, excellent lubrication effect, and simple structure

Active Publication Date: 2022-02-11
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention ignores its relatively serious negative effects. The behavior of arranging micro-textures in the core area of ​​the bearing raceway will change the rolling friction conditions of the bearing rolling elements.
This behavior may aggravate the friction and wear of the rolling bearing, and also affect the vibration stability of the bearing, which will seriously affect the fatigue life and safety reliability of the rolling bearing.
Moreover, neither the invention nor the prior art has studied the backflow characteristics of the lubricating oil droplets overflowed to both sides of the raceway by extrusion.

Method used

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  • Grease-lubricated ball bearing with micro-textured self-propelled oil droplets and its micro-textured processing method
  • Grease-lubricated ball bearing with micro-textured self-propelled oil droplets and its micro-textured processing method
  • Grease-lubricated ball bearing with micro-textured self-propelled oil droplets and its micro-textured processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The droplet-driven area belt is composed of multiple continuous gradient areas; each gradient area is equipped with an array of micro-textured units, such as figure 2 As shown; from the non-contact area to the contact area, the closer to the gradient area of ​​the contact area, the smaller the adjacent micro-texture spacing of the micro-texture unit array on it.

Embodiment 2

[0057] On the basis of Embodiment 1, the angular contact ball bearing (such as figure 1 Shown) as an example, the micro-texture processing method is as follows:

[0058] Step 1. Parameter setting and calculation of the droplet driving zone: according to the processing conditions of the laser processing equipment, set the width W of the microstructure to 15 μm and the height D to 5 μm; set the gradient area of ​​the droplet driving zone The number is 6, and the droplet surface contact angles in each gradient area are set to be 110°, 120°, 130°, 140°, 150° and 160°; then, the droplet surface contact angles in each gradient area are respectively substituted into Formula (1) calculates the adjacent micro-texture spacing H of the micro-texture unit array in the six gradient regions, which are 45.4 μm, 28.9 μm, 19.6 μm, 13.8 μm, 9.7 μm and 6.8 μm, respectively. The microtexture parameters of each gradient region are now listed in Table 1:

[0059] Table 1

[0060] Gradi...

Embodiment 3

[0075] On the basis of Example 1, taking the thrust ball bearing model 51124 as an example, the micro-texture processing method is as follows:

[0076] Step 1: Parameter setting and calculation of the droplet driving zone: according to the processing conditions of the laser processing equipment, set the width W of the micro-texture to 15 μm and the height D to 5 μm; set the gradient area of ​​the droplet driving zone The number is 4, and the droplet surface contact angles in each gradient area are set to be 110°, 126.7°, 143.3° and 160° respectively; then, the droplet surface contact angles in each gradient area are respectively substituted into formula (1) to calculate The adjacent micro-texture spacing H of the micro-texture unit array in the six gradient regions is 32.3 μm, 20.8 μm, 14.0 μm and 9.5 μm, respectively. The microtexture parameters of each gradient region are now listed in Table 2:

[0077] Table 2

[0078] Gradient region number 1 2 3 4 Wid...

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Abstract

The invention discloses a grease lubricated ball bearing with a micro-texture self-driving oil droplet and a micro-texture processing method thereof. In the prior art, there is no research on the backflow characteristics of lubricating oil droplets overflowed to both sides of the raceway by extrusion. The present invention divides the droplet driving zone into the non-contact zone of the inner ring and the outer ring raceway, and sets micro-texture in the droplet driving zone; the micro-texture changes from the non-contact zone of the raceway to the contact zone. Densely arranged; the droplet driving zone is composed of a plurality of continuous gradient zones; each gradient zone is provided with a micro-texture unit array; from the non-contact zone to the contact zone, the closer to the gradient zone of the contact zone, the The smaller the distance between the adjacent micro-textures of the micro-texture unit array. The invention allows the oil droplets to self-drive in a specific area under the influence of micro-textures of different densities, which can effectively accelerate the flow of lubricating oil droplets overflowing from the bearing back to the lubricating area of ​​the oil, improving the lubrication efficiency of the rolling bearing lubricating oil. The lubrication effect and utilization rate.

Description

technical field [0001] The invention belongs to the technical field of rolling bearings, and in particular relates to a grease-lubricated ball bearing and a micro-texture processing method for improving the lubricating effect by utilizing the micro-texture-assisted self-driving principle of oil droplets on a raceway. Background technique [0002] Rolling bearings are widely used important mechanical basic parts. They are widely used in various fields of modern my country's national economy and defense affairs. In the national economy, rolling bearings are called "industrial joints". As the basic industry and backbone industry of the machinery industry, the development level of the bearing industry often represents or restricts the development level of a country's machinery industry and other related industries. In the national defense industry, rolling bearings are important or core components in many military equipment. [0003] Rolling bearings can withstand radial loads ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C19/16F16C33/66F16C33/58B23K26/352
CPCF16C19/16F16C33/66F16C33/585B23K26/355
Inventor 吴参洪誉阳杨凯李兴林
Owner HANGZHOU DIANZI UNIV