CN117780797A - Dynamic pressure lubrication retainer based on friction interface texturing - Google Patents
Dynamic pressure lubrication retainer based on friction interface texturing Download PDFInfo
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- CN117780797A CN117780797A CN202311812723.7A CN202311812723A CN117780797A CN 117780797 A CN117780797 A CN 117780797A CN 202311812723 A CN202311812723 A CN 202311812723A CN 117780797 A CN117780797 A CN 117780797A
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- retainer
- micro
- dynamic pressure
- bearing
- pressure lubrication
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- 238000005461 lubrication Methods 0.000 title claims abstract description 29
- 238000005096 rolling process Methods 0.000 abstract description 18
- 230000001050 lubricating effect Effects 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The dynamic pressure lubrication retainer based on friction interface texturing comprises a retainer body, wherein a pocket is formed in the retainer body, and micro-textures are designed on the inner side surface of the pocket; the design of the micro-texture ensures that a high-pressure area is formed between the bearing retainer and the rolling bodies by the lubricating medium, reduces the friction force between the rolling bodies and the bearing retainer, and simultaneously can play a role in drainage for the lubricating medium to improve the bearing lubricating environment; the negative influence on the bearing rigidity and the structural strength caused by the design of the micro-texture of the inner ring and the outer ring is avoided, the retainer can be replaced in time according to the wear condition of the micro-texture, the dynamic pressure lubricating performance of the retainer is ensured to meet the requirement, and the lubricating effect is achieved under the condition that the negative influence on the bearing rigidity and the structural strength is not caused.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a dynamic pressure lubrication retainer based on friction interface texturing.
Background
The bearing is widely applied to turbine equipment such as compressors, steam turbines, gas turbines, aeroengines and other rotary machines. However, as turbine equipment continues to develop in the direction of higher parameters, friction between bearing assemblies becomes more and more severe, and frictional heating and localized wear greatly limit the improvement in bearing and overall performance.
Traditional antifriction bearings mainly rely on oil and grease lubrication, and lubrication media such as lubricating oil cannot enter a friction area often under higher bearing rotating speed or other special working conditions, so that friction and temperature rise of the bearings are aggravated, and even lubrication fails. Meanwhile, common measures for enhancing the lubricating capability of the bearing mainly comprise the steps of forming groove drainage on the surfaces of the inner ring and the outer ring, forming micro-textures on the inner ring and the outer ring, forming an oil storage groove on the retainer and the like. For example, CN201910739940.5, entitled rolling bearing inner race track and rolling bearing, discloses a rolling bearing inner race track and rolling bearing design, i.e. dynamic pressure lubrication texture is designed in the central region of the bearing inner race track surface. However, by designing a micro-texture on the inner ring or the outer ring, the rigidity and rotational stability of the bearing are easily changed, resulting in bearing failure. For example, the invention of the patent number CN201811599871.4, entitled a lubrication method for a surface texture assisted rolling bearing, further optimizes the problem of micro texture affecting bearing strength, but is still based on the design of the raceway surface.
Therefore, the structural optimization cannot satisfy the stability of the bearing and simultaneously reduce the friction between the bearing components through the kinetic energy of the lubricating medium.
Disclosure of Invention
In order to overcome the problems of the prior art, the invention aims to provide the dynamic pressure lubrication retainer based on friction interface texturing, wherein the inner side surface of the pocket hole of the retainer is designed with micro-textures, so that the friction interface between a rolling body and the retainer forms a hydrodynamic pressure effect, and further friction among bearing components is slowed down.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the dynamic pressure lubrication retainer based on friction interface texturing comprises a retainer body 1, wherein a pocket 1-1 is formed in the retainer body 1, and a micro-texture 2 is designed on the inner side surface of the pocket 1-1.
The number of the micro textures is not less than 1, and one surface at the inner side of the pocket 1-1 is independently arranged, or a plurality of surfaces at the inner side of the pocket 1-1 are simultaneously arranged.
The microtexture 2 is uniformly distributed in the axial direction or is non-uniformly distributed in the axial direction.
The microtexture 2 is uniformly distributed in the circumferential direction or is non-uniformly distributed in the circumferential direction.
The microtexture 2 is arranged in an opposite symmetry.
The microtextures 2 are connected to each other or are independent of each other.
The microtexture 2 adopts the same or different arrangement and combination for the grooves with different structures.
The cross section of the micro-texture 2 is quadrilateral, triangular or arc-shaped, and the maximum depth is 1-500 mu m.
One side edge of the micro-texture 2 coincides with the wall surface of the pocket 1-1.
Compared with the prior art, the invention has the beneficial effects that:
1. the design of the micro-texture ensures that a high-pressure area is formed between the bearing retainer and the rolling bodies by the lubricating medium, reduces the friction force between the rolling bodies and the bearing retainer, and simultaneously can play a role in drainage for the lubricating medium and improve the lubricating environment of the bearing.
2. The micro-texture design is arranged on the inner side of the pocket hole 1-1 of the retainer body 1, so that the negative influence on the bearing rigidity and the structural strength caused by the micro-texture design of the inner ring and the outer ring is avoided, the retainer can be replaced in time according to the micro-texture abrasion condition, and the dynamic pressure lubrication performance of the retainer can meet the requirement.
3. The design and the arrangement and combination form of different structures of the micro-texture are suitable for application under different working conditions, and meanwhile, the proper arrangement and combination form can be selected according to dynamic pressure lubrication effect, processing difficulty and bearing size.
In summary, the dynamic pressure lubrication retainer based on friction interface texturing provided by the design of the invention can give consideration to lubrication effect without negatively affecting bearing rigidity and structural strength.
Drawings
Fig. 1 is a view of the overall structure of a bearing of a dynamic pressure lubrication cage with a textured friction interface of the present invention.
Fig. 2 is a detailed structural schematic view of the cage body 1 of the present invention, wherein (a) in fig. 2 is an overall schematic view, (b) in fig. 2 is an insertion view of the pocket 1-1 shown in fig. 2 (a), and (c) in fig. 2 is a sectional view of (b) in fig. 2.
Fig. 3 is a schematic view of the microstructure of the present invention, wherein fig. 3 (a) is a rectangular groove, fig. 3 (b) is an annular groove, fig. 3 (c) is an L-shaped groove, and fig. 3 (d) is an arc-shaped groove.
Fig. 4 is a schematic view of the cross-sectional shape of the micro-texture of the present invention, wherein (a) in fig. 4 is triangular, (b) in fig. 4 is quadrangular, and (c) in fig. 3 is arc-shaped.
In the figure, a retainer body 1-1 and a pocket 1-1 are formed; 2-micro texture, 3-rolling bodies, 4-bearing outer ring and 5-bearing inner ring.
Detailed Description
For a better understanding of the present invention, reference is made to the following description of the invention taken in conjunction with the accompanying drawings of its embodiments.
Referring to fig. 1, a dynamic pressure lubrication retainer based on friction interface texturing is applied to a bearing, the bearing comprises a retainer body 1, a bearing inner ring 5 and a bearing outer ring 4 which are arranged inside and outside the retainer body 1, and rolling bodies 3 which are connected with the inner ring and the outer ring on the retainer body 1, the retainer body 1 is provided with a pocket 1-1, the inner side surface of the pocket 1-1 is designed with a micro-texture 2, the dynamic pressure micro-texture can form a fluid dynamic pressure effect in the micro-texture 2 when the bearing works, a high pressure area is formed between the retainer body 1 and the rolling bodies 3, friction between the retainer and the rolling bodies is reduced, meanwhile, the micro-texture stores lubricating oil between the rolling bodies and the retainer, can play a role of guiding the lubricating oil, and can further enhance the lubrication effect of the bearing.
Referring to fig. 2, the number of micro-textures is not less than 1, and the micro-textures are independently formed on one surface of the inner side of the pocket 1-1 or simultaneously formed on a plurality of surfaces of the inner side of the pocket 1-1, so that the micro-texture forming mode can be flexibly selected according to the size of the bearing.
The microtexture 2 is uniformly distributed in the axial direction or is non-uniformly distributed in the axial direction.
The microtexture 2 is uniformly distributed in the circumferential direction or is non-uniformly distributed in the circumferential direction.
The micro-textures 2 are arranged in a reverse symmetry mode, so that lubricating oil in the bearing can convert kinetic energy provided by rotation of the roller into pressure potential energy to the greatest extent.
The microtextures 2 are connected to each other or are independent of each other.
The microtexture 2 adopts the same or different arrangement and combination for grooves with different structures; so as to select a proper micro-texture form according to parameters such as bearing rotation speed, lubricating oil viscosity and the like; fig. 3 is a schematic view of the microstructure of the present invention, where fig. 3 (a) is a rectangular groove, fig. 3 (b) is an annular groove, fig. 3 (c) is an L-shaped groove, and fig. 3 (d) is an arc-shaped groove, and the same or different arrangements and combinations may be adopted.
Referring to fig. 4, the cross section of the micro-texture 2 is quadrilateral or triangular or arc, wherein fig. 4 (a) is triangle, fig. 4 (b) is quadrilateral, and fig. 3 (c) is arc, and the maximum depth is 1 μm-500 μm.
One side edge of the micro-texture 2 coincides with the wall surface of the pocket 1-1 so as to ensure that a lubricating medium can efficiently enter the micro-texture.
The retainer is generally made of metal materials or ceramic materials, but special materials meeting the working condition requirements can be adopted for reducing the weight of the retainer.
The working principle of the invention is as follows: the lubricating medium enters the micro-texture 2 under the independent or combined action of the factors such as the rotation of the rolling bodies 3, the gravity, the partial pressure difference in the bearings, the self pressure of the lubricating medium and the like, and a high-pressure area is formed between the bearing retainer body 1 and the rolling bodies 3 so as to reduce the friction force between the rolling bodies and the bearing retainer, and meanwhile, the micro-texture can also play a role in guiding the lubricating medium, so that the bearing lubricating environment is improved.
In addition, the invention avoids the negative influence on the bearing rigidity and the structural strength caused by the design of the micro-textures of the bearing inner ring 5 and the bearing outer ring 4, and simultaneously does not need to design the rotor stability required by the design textures of the inner ring; the retainer can be replaced in time according to the micro-texture abrasion condition, so that the dynamic pressure lubricity of the retainer can be ensured to meet the requirements at all times; in addition, the invention can select proper micro-texture arrangement and combination form according to dynamic pressure lubrication effect, processing difficulty and bearing size.
The content of the present invention is not limited to the following examples. Structural optimization and modification of the principles of action of the embodiments of the present invention, as well as other embodiments that may be made by one of ordinary skill in the art without creative effort, are within the scope of the present invention.
Claims (9)
1. The dynamic pressure lubrication retainer based on friction interface texturing comprises a retainer body (1), wherein a pocket (1-1) is formed in the retainer body (1), and the dynamic pressure lubrication retainer is characterized in that micro-textures (2) are formed in the inner side surface of the pocket (1-1).
2. The dynamic pressure lubrication retainer based on friction interface texturing according to claim 1, wherein the number of micro-textures is not less than 1, and the micro-textures are independently formed on one surface inside the pocket (1-1) or formed on a plurality of surfaces inside the pocket (1-1) at the same time.
3. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the microtexture (2) is arranged uniformly axially or non-uniformly axially.
4. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the microtexture (2) is arranged uniformly circumferentially or non-uniformly circumferentially.
5. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the microtexture (2) is arranged in a counter-symmetrical manner.
6. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the microtextures (2) are interconnected or independent of each other.
7. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the microtexture (2) uses the same or different arrangements of grooves of different structure.
8. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that the micro-texturing (2) cross section is quadrangular or triangular or arc with a maximum depth of 1-500 μm.
9. Dynamic pressure lubrication holder based on friction interface texturing according to claim 1, characterized in that one side of the micro-texture (2) coincides with the wall of the pocket (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812723.7A CN117780797A (en) | 2023-12-27 | 2023-12-27 | Dynamic pressure lubrication retainer based on friction interface texturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812723.7A CN117780797A (en) | 2023-12-27 | 2023-12-27 | Dynamic pressure lubrication retainer based on friction interface texturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117780797A true CN117780797A (en) | 2024-03-29 |
Family
ID=90386766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311812723.7A Pending CN117780797A (en) | 2023-12-27 | 2023-12-27 | Dynamic pressure lubrication retainer based on friction interface texturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117780797A (en) |
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2023
- 2023-12-27 CN CN202311812723.7A patent/CN117780797A/en active Pending
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