CN111594548B - Hydrostatic bearing sleeve - Google Patents
Hydrostatic bearing sleeve Download PDFInfo
- Publication number
- CN111594548B CN111594548B CN202010640425.4A CN202010640425A CN111594548B CN 111594548 B CN111594548 B CN 111594548B CN 202010640425 A CN202010640425 A CN 202010640425A CN 111594548 B CN111594548 B CN 111594548B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- bearing sleeve
- bearing
- hole
- static pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
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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
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
-
- 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
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a hydrostatic bearing sleeve which is provided with a bearing sleeve, wherein a sleeve joint hole is formed in the center of the end face of the bearing sleeve, an annular bulge is formed in the part, close to the left end, of the periphery of the bearing sleeve, a sealing hole is formed in the left end of the bearing sleeve, the right end of the bearing sleeve is sleeved with the hydrostatic sleeve, a shaft hole communicated left and right is formed in the center of the end face of the hydrostatic sleeve, a limiting bulge of an annular structure is formed in the part, close to the right end, of the periphery of the hydrostatic sleeve, the limiting bulge is clamped on the outer side of the right end of the bearing sleeve, and an oil drain area communicated with the shaft hole is formed in the periphery of the limiting bulge. The hydrostatic bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the greatest extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of an oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, enabling the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 revolutions per minute.
Description
Technical Field
The invention relates to the field of hydrostatic bearings, in particular to a hydrostatic bearing sleeve.
Background
Hydrostatic bearings are one type of plain bearings that utilize a pressure pump to forcibly pump pressurized lubricant into the small gap between the bearing and the shaft. It is mainly used in the fields of high bearing capacity, high rotation precision and high rotation speed which are frequently required to run at low speed, such as various heavy machine tools and high-precision machine tools.
At present, most of hydrostatic bearing sleeves on the market adopt steel parts or cast iron parts, the structural rigidity is strong, but the elasticity is extremely small, the oil temperature change is relatively large, the precision is easily deformed due to the temperature change, and therefore the thickness of an oil film is easily changed when a transmission shaft runs in the bearing sleeve, the running precision of the hydrostatic bearing is not improved, the precision of the hydrostatic bearing is further in a situation that the world is relatively backward, and the hydrostatic bearing with high precision required by China completely depends on import.
Disclosure of Invention
The invention aims to solve the technical problem of providing the hydrostatic bearing sleeve which has high elasticity and is not easy to deform due to temperature change, so that the running accuracy of the bearing is ensured.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a hydrostatic bearing sleeve, has the bearing sleeve of making by the alloy, the terminal surface center of bearing sleeve is provided with the circular hole of cup jointing of controlling the intercommunication, and the position that the bearing sleeve periphery is close to the left end is provided with annular bulge, the left end of bearing sleeve be provided with cup joint hole endocentric sealed hole, the right-hand member cup joint have with cup joint hole complex hydrostatic sleeve, the hydrostatic sleeve is the copper sheathing, its terminal surface center is provided with the shaft hole of controlling the intercommunication, and the position that the hydrostatic sleeve periphery is close to the right-hand member is provided with the spacing arch of annular structure, spacing protruding joint is in the right-hand member outside of bearing sleeve, should spacing bellied periphery be provided with the drain with the shaft hole intercommunication.
Preferably, the oil drainage area has at least two oil drainage areas.
Preferably, the sealing hole is a counter bore, and a sealing ring which is in embedded fit with the sealing hole is arranged in the sealing hole.
Preferably, a plurality of assembly holes which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve.
Preferably, the left end of the static pressure sleeve sleeved in the bearing sleeve is connected with the right end of the sealing hole.
Preferably, the right end face of the static pressure sleeve is provided with an annular static pressure groove concentric with the shaft hole.
Preferably, an oil guide groove communicated with the right end face of the static pressure sleeve is arranged at the position of the inner wall of the shaft hole corresponding to the oil drain area.
Preferably, the left end and the right end of the inner shaft hole of the static pressure sleeve are provided with outward-expanding guide flaring.
Compared with the prior art, the invention has the following advantages: the hydrostatic bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the greatest extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of an oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, enabling the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 revolutions per minute.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a sectional view of the internal structure of a hydrostatic bearing housing of the present invention;
FIG. 2 is a sectional view showing the internal structure of a bearing housing in a hydrostatic bearing housing according to the present invention;
FIG. 3 is a cross-sectional view of the internal structure of a thrust static sleeve in the axial direction of a static bearing sleeve according to the present invention;
fig. 4 is a cross-sectional view of the structure of fig. 3 a.
In the figure: 1. a bearing sleeve; 11. a socket hole; 12. a seal ring; 13. sealing the hole; 14. a fitting hole; 2. a static pressure sleeve; 21. a shaft hole; 22. an oil drainage area; 23. a static pressure tank; 24. and an oil guiding groove.
Detailed Description
The invention is described in detail below with reference to the attached drawings and detailed description:
the hydrostatic bearing sleeve shown in fig. 1 is provided with a bearing sleeve 1 made of alloy, as shown in fig. 2, the center of the end face of the bearing sleeve 1 is provided with a circular sleeve joint hole 11 which is communicated left and right, the part, close to the left end, of the periphery of the bearing sleeve 1 is provided with an annular bulge, the left end of the bearing sleeve 1 is provided with a seal hole 13 concentric with the sleeve joint hole 11, the seal hole 13 is a countersunk hole, and a seal ring 12 which is matched with the seal hole in an embedded manner is arranged in the seal hole 13, so that the tightness in the bearing sleeve 1 is ensured; the right end of the bearing sleeve 1 is sleeved with a static pressure sleeve 2 matched with the sleeve joint hole 11, and the left end of the static pressure sleeve 2 sleeved in the bearing sleeve 1 is connected with the right end of the sealing hole 13; as shown in fig. 3, the static pressure sleeve 2 is a copper sleeve, a shaft hole 21 which is communicated left and right is arranged in the center of the end face of the static pressure sleeve, a limiting protrusion with an annular structure is arranged at the position, close to the right end, of the outer periphery of the static pressure sleeve 2, the limiting protrusion is clamped at the outer side of the right end of the bearing sleeve 1, and an oil drain region 22 which is communicated with the shaft hole 21 is arranged at the outer periphery of the limiting protrusion; the forming mode between the bearing sleeve 1 and the static pressure sleeve 2 is realized by adopting a mode of casting to perform secondary centrifugal casting of copper.
In order to ensure that the thickness of the oil film is uniform when the transmission shaft runs in the bearing sleeve, the oil drainage area 22 has at least two oil drainage areas.
In order to facilitate the assembly between the later bearing sleeve 1 and the bearing box, a plurality of assembly holes 14 which are communicated left and right are formed in the left annular bulge of the bearing sleeve 1.
As shown in fig. 4, in order to enable axial thrust of the transmission shaft mounted in the static pressure sleeve 2, the right end surface of the static pressure sleeve 2 is provided with an annular static pressure groove 23 concentric with the shaft hole 21.
In order to facilitate the oil in the oil drain area 22 to flow into the right end of the static pressure sleeve 2, an oil guide groove 24 communicated with the right end surface of the static pressure sleeve 2 is arranged on the inner wall of the shaft hole 21 corresponding to the oil drain area 22.
In order to facilitate the transmission shaft to pass through and connect, the left and right ends of the inner shaft hole 21 of the static pressure sleeve 2 are provided with outward-expanding guide flaring.
During the use, bearing housing 1 passes mounting hole 14 through the bolt to be fixed on the bearing housing, the transmission shaft wears to establish in the shaft hole 21 of static pressure cover 2, seal through sealing washer 12 between transmission shaft and the bearing housing 1, fluid gets into in the shaft hole 21 through drain region 22, form the oil film in the clearance between transmission shaft and the shaft hole 21, simultaneously fluid also can get into the right-hand member face of static pressure cover 2 through leading the oil groove 24, and then infiltrate in static pressure groove 23, make the right-hand member face of static pressure cover 2 also can form the oil film that is used for axial thrust, because the shaping mode between bearing housing 1 and the static pressure cover 2 adopts the foundry goods to carry out the mode realization of secondary centrifugation pouring copper, consequently, the elasticity of bearing housing has been improved, the oil film clearance between transmission shaft and the bearing housing can not change when the oil temperature changes in bearing housing 1, the running accuracy of transmission shaft has been guaranteed.
The hydrostatic bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the greatest extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of an oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, enabling the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 revolutions per minute.
It is emphasized that: the above embodiments are merely preferred embodiments of the present invention, and the present invention is not limited in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (1)
1. The utility model provides a hydrostatic bearing sleeve, has bearing sleeve (1) of being made by the alloy, the terminal surface center of bearing sleeve (1) is provided with the circular hole (11) that cup joints of controlling the intercommunication, and the position that is close to the left end of bearing sleeve (1) periphery is provided with annular arch, its characterized in that: the left end of the bearing sleeve (1) is provided with a sealing hole (13) concentric with the sleeving hole (11), the right end of the bearing sleeve is sleeved with a static pressure sleeve (2) matched with the sleeving hole (11), the center of the end face of the static pressure sleeve (2) is provided with a shaft hole (21) communicated left and right, the part, close to the right end, of the periphery of the static pressure sleeve (2) is provided with a limit bulge of an annular structure, the limit bulge is clamped on the outer side of the right end of the bearing sleeve (1), and the periphery of the limit bulge is provided with an oil drain area (22) communicated with the shaft hole (21); the oil drainage area (22) is provided with at least two oil drainage areas; the sealing hole (13) is a countersunk hole, and a sealing ring (12) which is in embedded fit with the sealing hole (13) is arranged in the sealing hole; a plurality of assembly holes (14) which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve (1); the left end of the static pressure sleeve (2) sleeved in the bearing sleeve (1) is connected with the right end of the sealing hole (13); an annular static pressure groove (23) concentric with the shaft hole (21) is formed in the right end face of the static pressure sleeve (2); an oil guide groove (24) communicated with the right end face of the static pressure sleeve (2) is arranged at the position of the inner wall of the shaft hole (21) corresponding to the oil drain area (22); the left end and the right end of the inner shaft hole (21) of the static pressure sleeve (2) are provided with outward-expanding guide flaring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640425.4A CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640425.4A CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111594548A CN111594548A (en) | 2020-08-28 |
| CN111594548B true CN111594548B (en) | 2023-09-19 |
Family
ID=72185061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010640425.4A Active CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111594548B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1129853A (en) * | 1966-06-02 | 1968-10-09 | Mach Tool Industry Res Ass | Improvements in or relating to hydrostatic bearing assemblies |
| AU4412972A (en) * | 1971-07-05 | 1974-01-03 | Pongrass Bros. (Eng) Pty. Ltd | Composite bush |
| CN2030673U (en) * | 1988-05-09 | 1989-01-11 | 杭州轴承厂 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
| CN1314741A (en) * | 2000-03-17 | 2001-09-26 | 三星电机株式会社 | Main shaft motor |
| CN1462840A (en) * | 2002-05-27 | 2003-12-24 | 株式会社三协精机制作所 | Oil hydrodynamic bearing and shaft returning dynamo |
| CN1678838A (en) * | 2002-09-26 | 2005-10-05 | Ntn株式会社 | Hydrodynamic bearing device |
| CN1938524A (en) * | 2004-03-30 | 2007-03-28 | Ntn株式会社 | Hydrodynamic bearing device |
| JP2007263176A (en) * | 2006-03-27 | 2007-10-11 | Ntn Corp | Hydrodynamic bearing device |
| CN101705963A (en) * | 2009-11-27 | 2010-05-12 | 中国北车集团大连机车研究所有限公司 | Dongfeng series internal combustion locomotive supercharger thrust bearing |
| CN201827234U (en) * | 2010-09-21 | 2011-05-11 | 胡永光 | Axial throttling structure of liquid sliding antithrust bearing |
| CN201944119U (en) * | 2011-01-26 | 2011-08-24 | 江西杰克机床有限公司 | Static-pressure bearing with internal-feedback throttling return oil |
| CN205937453U (en) * | 2016-07-20 | 2017-02-08 | 海盐鼎盛机械有限公司 | Two -way slip copper bearing |
| CN208236733U (en) * | 2018-05-12 | 2018-12-14 | 珠海格力电器股份有限公司 | Bearing structure and compressor with same |
| DE102017213502A1 (en) * | 2017-08-03 | 2019-02-07 | Continental Automotive Gmbh | Floating bush bearing for an exhaust gas turbocharger |
| WO2019155797A1 (en) * | 2018-02-08 | 2019-08-15 | 株式会社Ihi | Bearing structure |
| CN212272832U (en) * | 2020-07-06 | 2021-01-01 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5306747B2 (en) * | 2008-09-09 | 2013-10-02 | Ｎｔｎ株式会社 | Hydrodynamic bearing device |
-
2020
- 2020-07-06 CN CN202010640425.4A patent/CN111594548B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1129853A (en) * | 1966-06-02 | 1968-10-09 | Mach Tool Industry Res Ass | Improvements in or relating to hydrostatic bearing assemblies |
| AU4412972A (en) * | 1971-07-05 | 1974-01-03 | Pongrass Bros. (Eng) Pty. Ltd | Composite bush |
| CN2030673U (en) * | 1988-05-09 | 1989-01-11 | 杭州轴承厂 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
| CN1314741A (en) * | 2000-03-17 | 2001-09-26 | 三星电机株式会社 | Main shaft motor |
| CN1462840A (en) * | 2002-05-27 | 2003-12-24 | 株式会社三协精机制作所 | Oil hydrodynamic bearing and shaft returning dynamo |
| CN1678838A (en) * | 2002-09-26 | 2005-10-05 | Ntn株式会社 | Hydrodynamic bearing device |
| CN1938524A (en) * | 2004-03-30 | 2007-03-28 | Ntn株式会社 | Hydrodynamic bearing device |
| JP2007263176A (en) * | 2006-03-27 | 2007-10-11 | Ntn Corp | Hydrodynamic bearing device |
| CN101705963A (en) * | 2009-11-27 | 2010-05-12 | 中国北车集团大连机车研究所有限公司 | Dongfeng series internal combustion locomotive supercharger thrust bearing |
| CN201827234U (en) * | 2010-09-21 | 2011-05-11 | 胡永光 | Axial throttling structure of liquid sliding antithrust bearing |
| CN201944119U (en) * | 2011-01-26 | 2011-08-24 | 江西杰克机床有限公司 | Static-pressure bearing with internal-feedback throttling return oil |
| CN205937453U (en) * | 2016-07-20 | 2017-02-08 | 海盐鼎盛机械有限公司 | Two -way slip copper bearing |
| DE102017213502A1 (en) * | 2017-08-03 | 2019-02-07 | Continental Automotive Gmbh | Floating bush bearing for an exhaust gas turbocharger |
| WO2019155797A1 (en) * | 2018-02-08 | 2019-08-15 | 株式会社Ihi | Bearing structure |
| CN208236733U (en) * | 2018-05-12 | 2018-12-14 | 珠海格力电器股份有限公司 | Bearing structure and compressor with same |
| CN212272832U (en) * | 2020-07-06 | 2021-01-01 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111594548A (en) | 2020-08-28 |
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