CN107387548B - Archimedes spiral dynamic pressure sliding bearing and application - Google Patents
Archimedes spiral dynamic pressure sliding bearing and application Download PDFInfo
- Publication number
- CN107387548B CN107387548B CN201710760143.6A CN201710760143A CN107387548B CN 107387548 B CN107387548 B CN 107387548B CN 201710760143 A CN201710760143 A CN 201710760143A CN 107387548 B CN107387548 B CN 107387548B
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- bearing
- oil
- archimedes spiral
- archimedes
- spiral surface
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
- F16C17/243—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety related to temperature and heat, e.g. for preventing overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/002—Cooling of bearings of fluid bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
- F16C2300/22—High-speed rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses an archimedes spiral surface dynamic pressure sliding bearing and application thereof, comprising a bearing body, wherein at least one archimedes spiral surface is arranged along the circumferential direction of the inner wall of the bearing body and used for forming a bearing lubricating oil cavity, an oil inlet is arranged at the maximum cutting depth of the top of the archimedes spiral surface, and an oil outlet is arranged at the maximum cutting depth of the bottom of the archimedes spiral surface, which is close to the end face of the bearing. The invention refers to the existing sliding bearing structure and combines with the practical application background, and provides a brand new oil cavity structure, namely an oil cavity formed by Archimedes spiral surfaces, which can effectively accelerate the circulation of lubricating oil, reduce the heating of the bearing and the temperature rise of the bearing, and the bearing has large effective bearing area and is suitable for high-speed heavy-load occasions.
Description
Technical Field
The invention relates to the field of rotary machinery, such as a high-speed machine tool spindle system, a high-speed rotor system and the like, in particular to an Archimedes spiral dynamic pressure sliding bearing and application thereof.
Background
The sliding bearing has the advantages of stable running and good vibration resistance, and has wide application in rotary machinery. However, with the increasing speed of rotary machines, the temperature rise of the sliding bearings has become a major obstacle to the application thereof, and therefore, in many cases, there is a tendency to be replaced by rolling bearings. However, in some important applications, such as the main shaft of a heavy-duty machine tool, the rotor of a water turbine, the connecting rod of an internal combustion engine, etc., the sliding bearing still has irreplaceable advantages. How to reduce the heat and temperature rise of the sliding bearing becomes a key issue for the sliding bearing to play an important role.
In patent CN200810166519.1 a sliding bearing is disclosed in which a resin layer is provided on the bearing inner chamber wall to prevent local high temperatures. Patent CN200710162615.4 discloses a cylindrical slide bearing having a split bearing for supporting a crankshaft of an internal combustion engine; in chinese patent 2005200454091, a stepped dynamic-static pressure bearing is disclosed, which is characterized in that an oil cavity is inclined, and oil inlet grooves are parallel along the boundary of the axial direction of the oil cavity, and the bearing needs to cooperate with a restrictor to work. Chinese patent CN95192327.7 discloses a sliding bearing with a ring-shaped intermediate support, which is complex in structure. There are also some patents directed to sliding bearings, which are given new designs according to different usage requirements, respectively. However, they generally have the disadvantage of complex structure or process, the circulation of lubricating oil is not optimal, and certain defects remain in reducing the temperature of the bearing, and the requirements for high-speed and high-vibration environments are still not met.
Disclosure of Invention
The invention aims to solve the problems of heating and temperature rise of a sliding bearing, and provides a novel high-speed dynamic pressure sliding bearing which can effectively accelerate the circulation of lubricating oil, reduce the heating of the bearing and the temperature rise of the bearing, has large effective bearing area and is suitable for high-speed heavy-load occasions.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the dynamic pressure sliding bearing is characterized by comprising a bearing body, wherein at least one Archimedes spiral surface formed by recessing is arranged along the circumferential direction of the inner wall of the bearing body and is used for forming a bearing lubricating oil cavity, an oil inlet is arranged at the maximum cutting depth of the top of each Archimedes spiral surface, and an oil outlet is arranged at the maximum cutting depth of the bottom of the Archimedes spiral surface, which is close to the end face of the bearing.
Further, when the number of archimedes 'spiral faces is plural, the plural archimedes' spiral faces are uniformly arranged on the inner wall of the bearing body in the circumferential direction of the bearing body.
Furthermore, the oil inlets of the archimedes screw faces are positioned on the same circular ring.
Furthermore, the oil outlets of the archimedes screw faces are positioned on the same circular ring.
Furthermore, the novel high-speed dynamic pressure sliding bearing is applied to a high-speed machine tool spindle system.
Further, the novel high-speed dynamic pressure sliding bearing is applied to a high-speed rotor system.
The specific working process of the bearing is as follows:
when the bearing works, lubricating oil entering the bearing body from the oil inlet flows along the circumferential direction under the drive of the rotating shaft and flows to the other end of the bearing along the Archimedes spiral surface; forming oil film pressure on the converged Archimedes spiral surface to realize bearing; the presence of archimedes' spiral surface accelerates the axial flow of the lubricating oil, which accelerates the circulation of the lubricating oil, which is one reason for reducing the temperature rise of the bearing. Because of the arrangement of the oil outlet, a pressure band is formed from the oil inlet to the oil outlet, when the hot oil from the last oil wedge enters the Archimedes spiral surface, the oil film gap is suddenly increased, the pressure is rapidly reduced, and the hot oil is difficult to enter the next oil wedge through the pressure band between the oil inlet and the oil outlet, so that the repeated heating of the hot oil is avoided, and the repeated heating of the hot oil is another reason for the low temperature rise of the bearing. The bearing has good high-speed characteristics. The Archimedes spiral surface machined by the bearing is convergent in the circumferential rotation direction, and has no divergent part, so the bearing area is large.
The beneficial effects of the invention are as follows:
the invention refers to the existing sliding bearing structure and combines with the practical application background, and provides a brand new oil cavity structure, namely an oil cavity formed by Archimedes spiral surfaces, which can effectively accelerate the circulation of lubricating oil, reduce the heating of the bearing and the temperature rise of the bearing, and the bearing has large effective bearing area and is suitable for high-speed heavy-load occasions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIGS. 1 and 2 are schematic views of the structure of the present invention;
FIG. 3 is a schematic diagram of the operation of the present invention;
the bearing comprises a bearing body 1, an Archimedes spiral surface 2, an oil outlet 3 and an oil inlet 4.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.
The invention is further described below with reference to the drawings and examples.
In fig. 1, the novel high-speed dynamic pressure sliding bearing comprises a bearing body 1, at least one Archimedes spiral surface 2 is arranged on the inner circle surface of the bearing body 1, an oil inlet 4 is arranged at the maximum cutting depth of the top of each Archimedes spiral surface 2, and an oil outlet 3 is arranged at the maximum cutting depth of the bottom of each Archimedes spiral surface 2, which is close to the end face of the bearing.
The invention is characterized in that a plurality of Archimedes spiral surfaces are processed on the inner circle surface of the bearing, and the Archimedes spiral surfaces are uniformly arranged on the inner wall of the bearing body along the circumferential direction of the bearing body. An oil inlet 4 is formed in the maximum cutting depth of the top of each spiral surface, and an oil outlet 3 is formed in the maximum cutting depth of the bottom close to the end face of the bearing; the oil inlets of the archimedes spiral surfaces are positioned on the same ring; the oil outlets of the archimedes screw surfaces are positioned on the same circular ring.
When the bearing works, lubricating oil entering the bearing body from the oil inlet 4 flows along the circumferential direction under the drive of the rotating shaft and flows to the other end of the bearing along the Archimedes spiral surface, as shown in the following figure 3; FIG. 3 is a schematic diagram of the distribution and operation of the archimedes' spiral surface inside the bearing body, assuming the bearing body is unfolded into a rectangular body;
and forming oil film pressure on the converged Archimedes spiral surface to realize bearing. The presence of archimedes' spiral surface accelerates the axial flow of the lubricating oil, which accelerates the circulation of the lubricating oil, which is one reason for reducing the temperature rise of the bearing. Due to the arrangement of the oil outlet 3, a pressure band is formed from the oil inlet 4 to the oil outlet 3, when the hot oil from the last oil wedge enters the Archimedes spiral surface, the oil film gap is suddenly increased, the pressure is rapidly reduced, and the hot oil is difficult to enter the next oil wedge through the pressure band between the oil inlet and the oil outlet, so that the repeated heating of the hot oil is avoided, and the repeated heating of the hot oil is another reason for the low temperature rise of the bearing. The bearing has good high-speed characteristics. The Archimedes spiral surface machined by the bearing is convergent in the circumferential rotation direction, and has no divergent part, so the bearing area is large.
The key point of the bearing is that the processing of the inner cavity Archimedes spiral surface can be completed in a processing center. The other parts are manufactured as common sliding bearings.
In addition, the invention also protects the novel high-speed dynamic pressure sliding bearing to be applied to a high-speed machine tool spindle system.
The invention also protects the novel high-speed dynamic pressure sliding bearing applied to a high-speed rotor system.
The novel high-speed dynamic pressure sliding bearing disclosed by the invention is also applied to high-vibration-resistance rotary machinery.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (3)
1. The dynamic pressure sliding bearing of the Archimedes spiral surface is characterized by comprising a bearing body, wherein at least one Archimedes spiral surface formed by recessing is arranged along the circumferential direction of the inner wall of the bearing body and is used for forming a bearing lubricating oil cavity, an oil inlet is arranged at the maximum cutting depth of the top of the Archimedes spiral surface, and an oil outlet is arranged at the maximum cutting depth of the bottom of the Archimedes spiral surface, which is close to the end surface of the bearing;
when a plurality of archimedes spiral surfaces are arranged, the archimedes spiral surfaces are uniformly arranged on the inner wall of the bearing body along the circumferential direction of the bearing body;
the oil inlets of the archimedes screw faces are positioned on the same circular ring;
the oil outlets of the Archimedes spiral surfaces are positioned on the same circular ring;
when the bearing works, lubricating oil entering the bearing body from the oil inlet flows along the circumferential direction under the drive of the rotating shaft and flows to the other end of the bearing along the Archimedes spiral surface; forming an oil film pressure on the converging archimedes' spiral;
due to the arrangement of the oil outlet, a pressure band is formed from the oil inlet to the oil outlet, and when the hot oil from the last oil wedge enters the Archimedes spiral surface, the oil film gap is suddenly increased, and the pressure is rapidly reduced.
2. An archimedes screw dynamic pressure sliding bearing as in claim 1 for use in a high speed machine spindle system.
3. An archimedes screw dynamic pressure sliding bearing as in claim 1 for use in high speed rotor systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760143.6A CN107387548B (en) | 2017-08-29 | 2017-08-29 | Archimedes spiral dynamic pressure sliding bearing and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760143.6A CN107387548B (en) | 2017-08-29 | 2017-08-29 | Archimedes spiral dynamic pressure sliding bearing and application |
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| Publication Number | Publication Date |
|---|---|
| CN107387548A CN107387548A (en) | 2017-11-24 |
| CN107387548B true CN107387548B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710760143.6A Active CN107387548B (en) | 2017-08-29 | 2017-08-29 | Archimedes spiral dynamic pressure sliding bearing and application |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681523B (en) * | 2019-01-29 | 2023-09-15 | 山东科技大学 | Combined sliding surface spiral groove bearing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH351144A (en) * | 1959-06-04 | 1960-12-31 | Annen Robert | Solid bearing with fluid friction |
| CN2043291U (en) * | 1988-11-16 | 1989-08-23 | 山东省德州机床厂 | Dynamic pressure sliding bearing |
| ITTO20030054A1 (en) * | 2002-02-06 | 2003-08-07 | Honda Motor Co Ltd | BEARING DEVICE |
| DE10332373A1 (en) * | 2003-07-17 | 2005-02-03 | Zinsser, Paul | Shaft arrangement for combustion engine, comprises shaft rotatably supported on two spaced-apart bearing positions, with flyweight arranged on one side of the shaft |
| CN101614239A (en) * | 2009-07-28 | 2009-12-30 | 西安交通大学 | A kind of water lubrication dynamic and hydrostatic bearing of low temperature rise |
| CN102072252A (en) * | 2010-12-30 | 2011-05-25 | 中国计量学院 | Waist-type thrust gas static pressure restrictor with Archimedes spiral pressure-equalizing grooves |
| CN104526546A (en) * | 2014-10-10 | 2015-04-22 | 许兆丰 | Static and dynamic pressure bearing for main shaft of ultra-high-precision grinding wheel frame of grinding machine |
| CN204366701U (en) * | 2014-10-10 | 2015-06-03 | 许兆丰 | A kind of hydrostatic and hydrodynamic bearing of grinding machine superhigh precision main shaft of grinding carriage |
| CN105508426A (en) * | 2015-12-29 | 2016-04-20 | 上海机床厂有限公司 | Oil film rigidity-adjustable fluid dynamic and static pressure slide bearing |
-
2017
- 2017-08-29 CN CN201710760143.6A patent/CN107387548B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH351144A (en) * | 1959-06-04 | 1960-12-31 | Annen Robert | Solid bearing with fluid friction |
| CN2043291U (en) * | 1988-11-16 | 1989-08-23 | 山东省德州机床厂 | Dynamic pressure sliding bearing |
| ITTO20030054A1 (en) * | 2002-02-06 | 2003-08-07 | Honda Motor Co Ltd | BEARING DEVICE |
| DE10332373A1 (en) * | 2003-07-17 | 2005-02-03 | Zinsser, Paul | Shaft arrangement for combustion engine, comprises shaft rotatably supported on two spaced-apart bearing positions, with flyweight arranged on one side of the shaft |
| CN101614239A (en) * | 2009-07-28 | 2009-12-30 | 西安交通大学 | A kind of water lubrication dynamic and hydrostatic bearing of low temperature rise |
| CN102072252A (en) * | 2010-12-30 | 2011-05-25 | 中国计量学院 | Waist-type thrust gas static pressure restrictor with Archimedes spiral pressure-equalizing grooves |
| CN104526546A (en) * | 2014-10-10 | 2015-04-22 | 许兆丰 | Static and dynamic pressure bearing for main shaft of ultra-high-precision grinding wheel frame of grinding machine |
| CN204366701U (en) * | 2014-10-10 | 2015-06-03 | 许兆丰 | A kind of hydrostatic and hydrodynamic bearing of grinding machine superhigh precision main shaft of grinding carriage |
| CN105508426A (en) * | 2015-12-29 | 2016-04-20 | 上海机床厂有限公司 | Oil film rigidity-adjustable fluid dynamic and static pressure slide bearing |
Non-Patent Citations (1)
| Title |
|---|
| 可变几何涡轮增压器液控执行机构的建模与仿真;王纪森;李仕辉;;机床与液压(第03期);101-103 * |
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| Publication number | Publication date |
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| CN107387548A (en) | 2017-11-24 |
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