CN107269702A - A kind of pressurized air journal bearing - Google Patents
A kind of pressurized air journal bearing Download PDFInfo
- Publication number
- CN107269702A CN107269702A CN201710593252.3A CN201710593252A CN107269702A CN 107269702 A CN107269702 A CN 107269702A CN 201710593252 A CN201710593252 A CN 201710593252A CN 107269702 A CN107269702 A CN 107269702A
- Authority
- CN
- China
- Prior art keywords
- bearing
- throttle orifice
- micro
- pressurized air
- working face
- 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.)
- Pending
Links
- 210000002583 cell-derived microparticle Anatomy 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
- F16C32/0622—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention provides a kind of pressurized air journal bearing.Described bearing includes bearing ectosome and rotor, and rotor is located at the inside of bearing ectosome, and the outer surface diameter of rotor is slightly less than the diameter of the bearing working face of bearing ectosome, so as to form bearing clearance；Several structure identical throttle orifices are along the circumferential direction evenly arranged with described bearing working face；Throttle orifice is through hole, and several micro-structural chambers are provided with through-holes；The aperture of throttle orifice upper end is located on bearing working face, and throttle orifice lower end is connected with being arranged on the air vent of bearing outside surface；Micro-structural groove is provided with bearing working face；Micro-structural groove is located at the both sides of throttle orifice.The present invention has simple in construction, and processing cost is low, process stabilizing, the advantages of quality controllable, and the traditional orifice restriction pressurized air journal bearing of its ratio of rigidity is high, and manufacturing cost is close with traditional orifice restriction pressurized air journal bearing.
Description
Technical field
The invention belongs to hydrostatic gas-lubricated bearing technical field.Specifically related to a kind of pressurized air journal bearing.
Background technology
Orifice restriction pressurized air journal bearing has high rotating accuracy and the advantage such as pollution-free is in precision machine tool and precision
There is important application in measuring apparatus.Bearing rigidity is the main performance index of orifice restriction pressurized air journal bearing, is to ensure that
The key of bearing accuracy and precision stability.Orifice restriction pressurized air journal bearing typically using smaller aperture due throttle orifice and
Less bearing clearance, makes gas occur stronger throttle effect during by throttle orifice and bearing clearance, so that it is guaranteed that
Bearing obtains high rigidity.Common orifice restriction pressurized air journal bearing, its throttle diameter is between 0.1 ~ 0.4mm, bearing
Gap is between 10 ~ 50 μm.Although throttle effect can be strengthened and make axle by further reducing the aperture of throttle orifice and bearing clearance
Rigidity is held further to improve, but will be for the throttle orifice less than 0.1mm diameters or the bearing clearance less than 10 μm in processing and manufacturing
Upper difficulty is very big, while also bringing higher processing and manufacturing cost.
The content of the invention
In order to overcome, the processing and manufacturing difficulty of pressurized air journal bearing in the prior art is big, it is high not to fabricate cost
Foot, the present invention proposes a kind of pressurized air journal bearing.
The pressurized air journal bearing of the present invention, is characterized in：Described bearing includes bearing ectosome and rotor, rotor position
In the inside of bearing ectosome, the outer surface diameter of rotor is slightly less than the diameter of the bearing working face of bearing ectosome, so as to form axle
Hold gap；Several structure identical throttle orifices are along the circumferential direction evenly arranged with described bearing working face；Throttle orifice is logical
Hole, is provided with several micro-structural chambers in through-holes；The aperture of throttle orifice upper end is located on bearing working face, and throttle orifice lower end is with setting
Put the air vent connection in bearing outside surface；Micro-structural groove is provided with bearing working face；Micro-structural groove is located at throttle orifice
Both sides.
The diameter of described micro-structural chamber is more than the orifice diameter of throttle orifice.
The cross sectional shape of micro-structural chamber in described throttle orifice is one kind in rectangle, semi-circular, triangle.
The quantity of micro-structural chamber in described throttle orifice is 1 ~ 10.
The cross sectional shape of described micro-structural groove be rectangle, inverted trapezoidal, del, it is semi-circular in one kind.
The quantitative range of described throttle orifice (3) is 6 ~ 10.
The quantity of the micro-structural groove (4) of described throttle orifice (3) both sides is 2 ~ 30.
Micro-structural chamber in the throttle orifice of the present invention makes the diameter of throttle orifice be continually changing in airflow direction, undergoes gas
Repeatedly expand and then strengthen throttle effect.Micro-structural groove on bearing working face, makes bearing clearance height continuous in airflow direction
Change, makes gas experience repeatedly expand and then strengthens throttle effect.
Working face in the present invention could be arranged to the working face of the groove containing micro-structural, or be not provided with micro-structural groove
Complete plane.
Throttle orifice in the present invention could be arranged to the throttle orifice of the chamber containing micro-structural, or be not provided with micro-structural chamber
Throttle orifice.
The present invention strengthens the throttle effect of throttle orifice and bearing clearance using the micro-structural with determination shape, so that real
The raising of existing orifice restriction pressurized air journal bearing rigidity.New construction bearing evades reduction throttling while rigidity is improved
Aperture and the manufacturing technology that bearing clearance is brought are difficult.
The present invention's is simple in construction, and rigidity and carrying are high, and processing cost is low, and process stabilizing is quality controllable.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 a, b, c are the sectional view of the throttle orifice of three kinds of mechanisms in the present invention；
Fig. 3 a, b, c, d are the sectional view of the micro-structural groove of four kinds of mechanisms in the present invention；
In figure, the bearing of 1. bearing ectosome, 2. air vent, 3. throttle orifice, 4. micro-structural groove, 5. bearing working face, 6. rotor 7.
The micro-structural chamber of 8. aperture of gap 9..
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
Embodiment 1
Fig. 1 is bearing overall structure diagram of the invention；In Fig. 1, pressurized air journal bearing of the invention, including bearing
Ectosome 1 and rotor 6, its annexation are that rotor 6 is located inside bearing ectosome 1, and the outer surface diameter of rotor 6 is slightly less than bearing
The working surface diameter of ectosome 1, so as to form bearing clearance 7, as shown in Figure 1.It is along the circumferential direction equal on described bearing working face 5
It is even to be provided with several structure identical throttle orifices 3；Described throttle orifice 3 is a through hole, and several micro-structurals are provided with through-holes
Chamber 9.The aperture 8 of the upper end of throttle orifice 3 is located on bearing working face, the lower end of throttle orifice 3 and the air vent 2 for being arranged on bearing outside surface
Connection.Micro-structural groove 4 is provided with bearing working face 5.Micro-structural groove 4 is located at the both sides of throttle orifice 3.
The diameter of described micro-structural chamber 9 is more than the diameter of aperture 8 of throttle orifice 3.
Fig. 2 a, b, c are the sectional view of the throttle orifice of three kinds of mechanisms in the present invention；The section of micro-structural chamber 9 in throttle orifice
It is shaped as one kind in rectangle, semi-circular, triangle.As shown in Figure 2.
Fig. 3 a, b, c, d are the sectional view of the micro-structural groove of four kinds of mechanisms in the present invention.The cross sectional shape of micro-structural groove is square
Shape, del, inverted trapezoidal, it is semi-circular in one kind.As shown in Figure 3.
The quantity of micro-structural chamber 9 in described throttle orifice 3 is one to ten.
The quantitative range of described throttle orifice 3 is six to ten.
The quantitative range of the micro-structural groove of described throttle orifice both sides is two to three ten.
In the present embodiment, the quantitative range of throttle orifice is set to six, and throttle orifice 3 is one of them, the shape of micro-structural chamber 9
It is rectangle.
The quantity of the micro-structural groove of described throttle orifice both sides is two, and cross sectional shape is rectangle.
In Fig. 1, the gap between rotor 6 of the invention and bearing ectosome 1 is in described bearing clearance 7, bearing clearance 7
Gas there is certain pressure to form bearing capacity, bearing capacity changes with rotor-position and changes and form bearing rigidity.This hair
Bright described its main function of micro-structural is by strengthening throttle effect, so as to reach the purpose for improving rigidity.
In Fig. 2, the micro-structural chamber 9 in throttle orifice 3 makes the aperture of throttle orifice be continually changing in airflow direction, undergoes gas
Repeatedly expand and then strengthen throttle effect.The micro-structural groove set on working face 5, positioned at the both sides of throttle orifice 3, makes bearing clearance
Height is continually changing in airflow direction, gas experience is repeatedly expanded and then is strengthened throttle effect.
The operation principle of the present invention is that pressed gas enters throttle orifice 3 through air vent 2, with micro-structural chamber 9 in throttle orifice 3
Interaction makes the multiple expansion of gas experience.Then, gas enters bearing clearance 7 by aperture 8, and gas is in bearing clearance afterwards
Inside both sides flowing, gas is undergone again with the interaction of micro-structural groove 4 on working face 5 multiple swollen for gas in the process
It is swollen.
Embodiment 2
The present embodiment is identical with the structure of embodiment 1, except that in the present embodiment, the quantitative range of throttle orifice 3 is set to
Ten, micro-structural chamber shape is semicircle 11.The quantity of the micro-structural groove 4 of throttle orifice both sides is 20, cross sectional shape
It is inverted trapezoidal 14.
Embodiment 3
The present embodiment is identical with the structure of embodiment 1, except that in the present embodiment, the quantitative range of throttle orifice 3 is set to
Ten, micro-structural chamber shape is triangle 12.Bearing working face is free of micro-structural groove.
Embodiment 4
The present embodiment is identical with the structure of embodiment 1, except that in the present embodiment, throttle orifice is without micro-structural chamber
Throttle orifice.The quantity of the micro-structural groove of throttle orifice both sides is ten, and cross sectional shape is del 15.
Claims (7)
1. a kind of pressurized air journal bearing, it is characterised in that：Described bearing includes bearing ectosome (1) and rotor (6), rotor
(6) it is located at the inside of bearing ectosome (1), the outer surface diameter of rotor (6) is slightly less than the bearing working face (5) of bearing ectosome (1)
Diameter, so as to form bearing clearance (7)；Several structures are along the circumferential direction evenly arranged with described bearing working face (5)
Identical throttle orifice (3)；Throttle orifice (3) is through hole, and several micro-structural chambers (9) are provided with through-holes；Throttle orifice (3) upper end
Aperture (8) is located on bearing working face (5), throttle orifice (3) lower end and the air vent for being arranged on bearing outside surface（2）Connection；
Micro-structural groove (4) is provided with bearing working face (5)；Micro-structural groove (4) is located at the both sides of throttle orifice (3).
2. pressurized air journal bearing according to claim 1, it is characterised in that：The diameter of described micro-structural chamber (9)
More than aperture (8) diameter of throttle orifice (3).
3. pressurized air journal bearing according to claim 1, it is characterised in that：Micro- knot in described throttle orifice (3)
The cross sectional shape of structure chamber (9) is one kind in rectangle (10), semi-circular (11), triangle (12).
4. pressurized air journal bearing according to claim 1, it is characterised in that：Micro- knot in described throttle orifice (3)
The quantity of structure chamber (9) is 1 ~ 10.
5. pressurized air journal bearing according to claim 1, it is characterised in that：The section of described micro-structural groove (4)
It is shaped as one kind in rectangle (13), inverted trapezoidal (14), del (15), semi-circular (16).
6. pressurized air journal bearing according to claim 1, it is characterised in that：The quantity model of described throttle orifice (3)
Enclose for 6 ~ 10.
7. pressurized air journal bearing according to claim 1, it is characterised in that：Described throttle orifice (3) both sides it is micro-
The quantity of structure grooves (4) is 2 ~ 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593252.3A CN107269702A (en) | 2017-07-20 | 2017-07-20 | A kind of pressurized air journal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593252.3A CN107269702A (en) | 2017-07-20 | 2017-07-20 | A kind of pressurized air journal bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269702A true CN107269702A (en) | 2017-10-20 |
Family
ID=60079227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710593252.3A Pending CN107269702A (en) | 2017-07-20 | 2017-07-20 | A kind of pressurized air journal bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269702A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081082A (en) * | 2019-06-04 | 2019-08-02 | 中国工程物理研究院机械制造工艺研究所 | A kind of static pressure air-bearing transverse bearing |
| CN110486383A (en) * | 2019-08-27 | 2019-11-22 | 江苏集萃精凯高端装备技术有限公司 | A kind of production method of aerostatic bearing matrix and its surface micro-structure |
| CN110617272A (en) * | 2019-09-27 | 2019-12-27 | 广东工业大学 | Air bearing |
| CN111720440A (en) * | 2019-03-22 | 2020-09-29 | 上海微电子装备（集团）股份有限公司 | Air floatation cushion structure |
| WO2021129425A1 (en) * | 2019-12-25 | 2021-07-01 | 至玥腾风科技集团有限公司 | Air bearing, rotor system, and microturbine |
| WO2022022100A1 (en) * | 2020-07-29 | 2022-02-03 | 青岛海尔智能技术研发有限公司 | Gas bearing, compressor, and air conditioner system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694032A (en) * | 1992-09-09 | 1994-04-05 | Kobe Steel Ltd | Turbine type expander and its static pressure thrust gas bearing |
| JPH084768A (en) * | 1994-06-21 | 1996-01-09 | Kyocera Corp | Static pressure rotary bearing device |
| JPH08334124A (en) * | 1995-06-07 | 1996-12-17 | Mitsubishi Heavy Ind Ltd | Gas bearing structure |
| DE19835339A1 (en) * | 1998-08-05 | 2000-02-17 | Alfred Jaeger | Air bearings, especially for the shaft of a motor spindle |
| JP2008082356A (en) * | 2006-09-26 | 2008-04-10 | Oiles Ind Co Ltd | Static pressure gas bearing |
| JP2013119941A (en) * | 2011-12-09 | 2013-06-17 | Disco Corp | Spindle unit |
| TWM476666U (en) * | 2013-11-13 | 2014-04-21 | Prec Machinery Res & Dev Ct | Ultrasonic machining device |
| CN106640971A (en) * | 2017-03-09 | 2017-05-10 | 中国工程物理研究院机械制造工艺研究所 | Hydrostatic gas thrust bearing |
| CN206918079U (en) * | 2017-07-20 | 2018-01-23 | 中国工程物理研究院机械制造工艺研究所 | A kind of pressurized air journal bearing |
-
2017
- 2017-07-20 CN CN201710593252.3A patent/CN107269702A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694032A (en) * | 1992-09-09 | 1994-04-05 | Kobe Steel Ltd | Turbine type expander and its static pressure thrust gas bearing |
| JPH084768A (en) * | 1994-06-21 | 1996-01-09 | Kyocera Corp | Static pressure rotary bearing device |
| JPH08334124A (en) * | 1995-06-07 | 1996-12-17 | Mitsubishi Heavy Ind Ltd | Gas bearing structure |
| DE19835339A1 (en) * | 1998-08-05 | 2000-02-17 | Alfred Jaeger | Air bearings, especially for the shaft of a motor spindle |
| JP2008082356A (en) * | 2006-09-26 | 2008-04-10 | Oiles Ind Co Ltd | Static pressure gas bearing |
| JP2013119941A (en) * | 2011-12-09 | 2013-06-17 | Disco Corp | Spindle unit |
| TWM476666U (en) * | 2013-11-13 | 2014-04-21 | Prec Machinery Res & Dev Ct | Ultrasonic machining device |
| CN106640971A (en) * | 2017-03-09 | 2017-05-10 | 中国工程物理研究院机械制造工艺研究所 | Hydrostatic gas thrust bearing |
| CN206918079U (en) * | 2017-07-20 | 2018-01-23 | 中国工程物理研究院机械制造工艺研究所 | A kind of pressurized air journal bearing |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720440A (en) * | 2019-03-22 | 2020-09-29 | 上海微电子装备（集团）股份有限公司 | Air floatation cushion structure |
| WO2020192554A1 (en) * | 2019-03-22 | 2020-10-01 | 上海微电子装备（集团）股份有限公司 | Air-float cushion structure |
| CN110081082A (en) * | 2019-06-04 | 2019-08-02 | 中国工程物理研究院机械制造工艺研究所 | A kind of static pressure air-bearing transverse bearing |
| CN110486383A (en) * | 2019-08-27 | 2019-11-22 | 江苏集萃精凯高端装备技术有限公司 | A kind of production method of aerostatic bearing matrix and its surface micro-structure |
| CN110486383B (en) * | 2019-08-27 | 2021-08-03 | 江苏集萃精凯高端装备技术有限公司 | Aerostatic bearing matrix and manufacturing method of surface microstructure thereof |
| CN110617272A (en) * | 2019-09-27 | 2019-12-27 | 广东工业大学 | Air bearing |
| CN110617272B (en) * | 2019-09-27 | 2021-08-13 | 广东工业大学 | Air bearing |
| WO2021129425A1 (en) * | 2019-12-25 | 2021-07-01 | 至玥腾风科技集团有限公司 | Air bearing, rotor system, and microturbine |
| WO2022022100A1 (en) * | 2020-07-29 | 2022-02-03 | 青岛海尔智能技术研发有限公司 | Gas bearing, compressor, and air conditioner system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |