CN110094425A - A kind of static pressure air-bearing axial bearing - Google Patents
A kind of static pressure air-bearing axial bearing Download PDFInfo
- Publication number
- CN110094425A CN110094425A CN201910482693.5A CN201910482693A CN110094425A CN 110094425 A CN110094425 A CN 110094425A CN 201910482693 A CN201910482693 A CN 201910482693A CN 110094425 A CN110094425 A CN 110094425A
- Authority
- CN
- China
- Prior art keywords
- bearing
- hole
- thrust plate
- matter structure
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 239000011148 porous material Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 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
- F16C32/0618—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 porous material
-
- 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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of static pressure air-bearing axial bearings, comprising: rotor (1) and bearing thrust plate (2) are air film (3) between rotor (1) lower surface and the upper surface of bearing thrust plate (2)；Several first through hole (4) are circumferentially provided on bearing thrust plate (2), cylindrical porous matter structure (5) is inlaid in each first through hole (4), the inside of cylindrical porous matter structure (5) offers the second through-hole from cylindrical porous matter structure upper surface (6) center；Second through-hole penetrates into cylindrical porous matter structure lower surface (12)；Cylindrical porous matter structure lower surface (12) and bearing thrust plate lower surface (13) form the air vent (14) of supply high pressure gas；Overcome orifice restriction rigidity to be difficult to the shortcomings that being promoted in stability, while avoiding the problem that porous restriction reliability is insufficient, requirement on machining accuracy is high, has the advantages that at low cost, process stabilizing, quality controllable.
Description
Technical field
The invention belongs to static-pressure air bearing technical fields.More particularly to a kind of static pressure air-bearing of viscous-inertia coupling throttling
Axial bearing.
Background technique
Orifice restriction pressurized air axial bearing has the characteristics that rotating accuracy is high, the service life is long, free of contamination, in ultraprecise plus
Work field has extensive use.Bearing rigidity and stability are that the main performance of orifice restriction pressurized air axial bearing refers to
Mark, is to ensure that the key of bearing accuracy and reliability.Higher bearing rigidity can be obtained using biggish supply gas pressure, still
Pneumatic hammer oscillation can be caused, bearing is caused to can not work normally.Compared with orifice restriction, gas enters by porous restriction
In air film gap, flow regime is more stable, and the critical supply gas pressure of self-excited vibration and support stiffness are obviously improved, but Porous
Flow controller throttling performance is determined by porous material self-characteristic, usually requires that porous material to obtain higher support stiffness
With compared with low-permeability and with minimum air film gap 5-10um, require high processing more tired material and the accuracy of manufacture
Difficulty, and porous material is easy blocking, dampness deformation causes bearing rigidity reduction that locking phenomenon occurs, and is not able to satisfy to air-bearing shafts
Holding unfailing performance must ask.
Summary of the invention
It is unable to Synchronous lifting in order to solve orifice restriction pressurized air axial bearing rigidity in the prior art and stability, together
When overcome the problems, such as that porous restriction air-bearing reliability is insufficient, bearing mnanufacture difficulty is big, it is viscous-used that the invention proposes one kind
Property coupling throttling static pressure air-bearing axial bearing.
The static pressure air-bearing axial bearing of viscous-inertia coupling throttling of the invention, its main feature is that: the bearing by rotor with
Bearing thrust board group at, between rotor lower surface and the upper surface of bearing thrust plate be air film thickness；In the bearing
Several first through hole are circumferentially provided on thrust plate；Cylindrical porous matter structure is inlayed in first through hole；In circle
The inside of cylindricality porous structure offers the second through-hole, the second through-hole from cylindrical porous matter structure upper surface center downwards according to
Secondary includes 3 sections, respectively one section of throttling pore, one section of taper connection hole, one section of cylindrical hole；Cylindrical porous matter structure upper surface
There is a certain distance to form annular away from bearing thrust plate upper surface and presses chamber；Throttling pore, taper connection hole, the connected shape of cylindrical hole
Cylindrical porous matter structure lower surface is penetrated at the second through-hole；Cylindrical porous matter structure lower surface and bearing thrust plate following table
Face forms the air vent of supply high pressure gas；Total forms the static pressure air-bearing axial bearing of viscous-inertia coupling throttling.
The rotor can move up certain displacement in gas supply, so that its lower surface and bearing thrust plate
Upper surface form the air-film thickness of certain (8-40um).
Wherein, the inside of the cylindrical porous matter structure from cylindrical porous matter structure upper surface center downwards successively
Be provided with one section of throttling pore, one section of taper connection hole, one section of cylindrical hole, wherein be designed as 3 holes be in order to reduce difficulty of processing,
Realization easy to process.
Wherein, the throttling pore, taper connection hole, cylindrical hole form the second through-hole and penetrate into cylindrical porous matter knot
Structure lower surface.
Wherein, the cylindrical porous matter structure upper surface has a certain distance to form ring away from bearing thrust plate upper surface
Shape presses chamber.
Wherein, chamber is settable is not provided with for the pressure of the annular in the present invention.
Wherein, the porous material in the present invention can be Porous metal and be also possible to Porous Graphite.
One or more technical solution provided by the present application, has at least the following technical effects or advantages:
Cylindrical porous matter structure energy reasonable coordination VISCOUS FLOW and inertia in the present invention flow, and inhibit redundancy gas
It generates, facilitates the stability and rigidity that improve air-bearing simultaneously.
Gas is viscous, inertia using porous structure and aperture composite throttling, in enhancing flow controller and lubrication gap by the present invention
Matching properties are flowed, realize gas suspension rigidity and stability Synchronous lifting.It is insufficient to solve single porous restriction reliability
And the low problem for being easy to produce vibration of single orifice restriction rigidity.
Structure of the invention is simple, and stability and rigidity are high, and structure replacement is controllable, and manufacturing cost is low.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of cylindrical porous matter structure of the invention；
In figure, 1 rotor, 2 bearing thrust plates, 3 air films, 4 first through hole, 5 cylindrical porous matter structures, 6 cylindrical porous
Matter structure upper surface, 7 throttling pores, 8 connecting holes, 9 cylindrical holes, 10 bearing thrust plate upper surfaces, 11 annulars press chamber, 12 cylinders
Shape porous structure lower surface, 13 bearing thrust plate lower surfaces, 14 air vents.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Embodiment 1
Fig. 1 is that viscous-inertia of the invention couples throttling pressurized air bearing axial bearing overall structure diagram；In Fig. 1, this
Viscous-inertia of invention couples throttling pressurized air bearing axial bearing, including rotor 1 and bearing thrust plate 2, and connection relationship is rotor
1 in the top of bearing thrust plate 2, and the diameter of rotor 1 is less than the diameter of bearing thrust plate 2；Rotor 1 can be to moving up in gas supply
Certain displacement is moved, so that its lower surface and the upper surface of bearing thrust plate 2 form the thickness of the air film 3 of certain (8-40um)
Degree is as shown in Figure 1.Several first through hole 4 are circumferentially provided on the bearing thrust plate 2；In first through hole 4
Inlay cylindrical porous matter structure 5；In the inside of cylindrical porous matter structure 5 from cylindrical porous matter structure upper surface 6
The heart successively opens downwards 7, one sections of one section of throttling pore, 8, one sections of taper connection hole cylindrical hole 9；Table in cylindrical porous matter structure
Face 6 has a certain distance to form annular pressure chamber 11 away from bearing thrust plate upper surface 10；Throttling pore 7, connecting hole 8, cylindrical hole 9
It is connected to form the second through-hole and penetrates into cylindrical porous matter structure lower surface 12, connecting hole 8 is specially taper connection hole；It is cylindrical
Porous structure lower surface 12 and bearing thrust plate lower surface 13 form the air vent 14 of supply high pressure gas；Total is formed
The static pressure air-bearing axial bearing of viscous-inertia coupling throttling.
Fig. 2 shows for viscous in this hair-inertia coupling throttling i.e. flow controller structure of porous structure and aperture composite throttling to be cutd open
View.
The diameter of the throttling pore 7 is less than the diameter in taper connection hole, and the diameter in taper connection hole is less than cylindrical hole 9
Diameter.
The cylindrical porous matter structure upper surface 6 has a certain distance to form annular away from bearing thrust plate upper surface 10
Press chamber 11.
Rotor 1 can move up certain displacement in gas supply in the present invention, so that its lower surface is stopped with bearing
The upper surface of push plate 2 forms the thickness of certain air film 3, and gas has certain pressure to form bearing capacity, with rotor position
The variation set, bearing capacity change to form rigidity.Its main function of cylindrical porous matter structure of the present invention is
Enhance flow controller throttling viscosity, so that viscous-inertia flowing matches the mesh for reaching while improving bearing rigidity and stability
's.
Gas is come in from air vent through cylindrical porous matter structure 5 in Fig. 2, so that gas is not by flowing through cylindrical porous matter
Inertia before structure 5 flows the viscosity after becoming to flow through cylindrical porous matter structure 5 and the mixing of inertia is imitated to enhance throttling
It answers and stability.
The working principle of the invention is that gas is come in from air vent 4, a part through cylindrical hole 9, taper connection hole finally by
Throttling pore 7 flows into annular pressure chamber 11 and then proceedes to the thickness 3 that up stream forms air film, a part of hole clearance flow by Porous
The thickness that up stream forms air film 3 is then proceeded into pressure chamber 11, gas is VISCOUS FLOW in Porous gap 5, and gas exists
It is flowed for inertia in throttling pore 7, gas viscosity effect enhancing and to improve bearing simultaneously rigid with inertia gas mixing to reach
The purpose of degree and stability.
Embodiment 2
The present embodiment is identical as the structure of embodiment 1, except that annular pressure chamber 11 is not provided in the present embodiment,
6 distance away from bearing thrust plate upper surface 10 of cylindrical porous matter structure upper surface is zero.
Embodiment 3
The present embodiment is identical as the structure of embodiment 1, except that cylindrical porous matter structure 5 in the present embodiment
Material is Porous metal.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of static pressure air-bearing axial bearing, which is characterized in that the bearing includes:
Rotor (1) and bearing thrust plate (2), rotor (1) are located above bearing thrust plate (2), and rotor (1) lower surface is stopped with bearing
It is between the upper surface of push plate (2) air film (3)；Bearing thrust plate is circumferentially provided with several first through hole on (2)
(4), cylindrical porous matter structure (5) is inlaid in each first through hole (4), in cylindrical porous matter structure upper surface (6)
The heart offers the second through-hole；Second through-hole penetrates into cylindrical porous matter structure lower surface (12)；Under cylindrical porous matter structure
Surface (12) and bearing thrust plate lower surface (13) form the air vent (14) of supply high pressure gas.
2. static pressure air-bearing axial bearing according to claim 1, which is characterized in that the second through-hole includes successively from the top down
Three sections of connection, are respectively as follows: one section of throttling pore (7), one section of connecting hole (8), one section of cylindrical hole (9).
3. static pressure air-bearing axial bearing according to claim 2, which is characterized in that connecting hole (8) is specially taper connection
Hole.
4. static pressure air-bearing axial bearing according to claim 2, which is characterized in that throttling pore (7), connecting hole (8), circle
The center line of post holes (9) is overlapped.
5. static pressure air-bearing axial bearing according to claim 3, which is characterized in that the diameter of throttling pore (7) with
The upper end opening diameter in taper connection hole is identical, and the lower ending opening diameter in taper connection hole is straight with cylindrical hole (9)
Diameter size is identical.
6. static pressure air-bearing axial bearing according to claim 1, which is characterized in that rotor (1) its lower surface in gas supply
The air film of 8-40 micron thickness is formed with the upper surface of bearing thrust plate (2).
7. static pressure air-bearing axial bearing according to claim 1, which is characterized in that in cylindrical porous matter structure (5)
Porous material is Porous metal or Porous Graphite.
8. static pressure air-bearing axial bearing according to claim 1, which is characterized in that cylindrical porous matter structure upper surface
(6) there is a certain distance to form annular away from bearing thrust plate upper surface (10) and press chamber (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482693.5A CN110094425A (en) | 2019-06-04 | 2019-06-04 | A kind of static pressure air-bearing axial bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482693.5A CN110094425A (en) | 2019-06-04 | 2019-06-04 | A kind of static pressure air-bearing axial bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110094425A true CN110094425A (en) | 2019-08-06 |
Family
ID=67450244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910482693.5A Pending CN110094425A (en) | 2019-06-04 | 2019-06-04 | A kind of static pressure air-bearing axial bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110094425A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695380A (en) * | 2019-11-16 | 2020-01-17 | 洛阳传顺机械设备有限公司 | Ultrasonic wave air static pressure electricity main shaft |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN112922961A (en) * | 2021-03-23 | 2021-06-08 | 哈尔滨工业大学 | Static pressure air flotation unit based on porous throttling unit and processing method |
| CN114135583A (en) * | 2021-11-24 | 2022-03-04 | 郑州大学 | High-rigidity large-bearing ultrasonic extrusion suspension bearing |
| CN114857174A (en) * | 2022-06-16 | 2022-08-05 | 中国工程物理研究院机械制造工艺研究所 | Anti-disturbance restrictor for hydrostatic bearing and hydrostatic guide rail |
| CN115263924A (en) * | 2022-07-18 | 2022-11-01 | 中电科风华信息装备股份有限公司 | Mixed type air bearing with air path and loop based on porous material and air path mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61182736A (en) * | 1985-02-06 | 1986-08-15 | Omron Tateisi Electronics Co | Static pressure pneumatic bearing |
| JPH03244827A (en) * | 1990-02-21 | 1991-10-31 | Nippon Seiko Kk | Static pressure gas bearing |
| JPH0510330A (en) * | 1991-06-29 | 1993-01-19 | Canon Inc | Static pressure bearing device |
-
2019
- 2019-06-04 CN CN201910482693.5A patent/CN110094425A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61182736A (en) * | 1985-02-06 | 1986-08-15 | Omron Tateisi Electronics Co | Static pressure pneumatic bearing |
| JPH03244827A (en) * | 1990-02-21 | 1991-10-31 | Nippon Seiko Kk | Static pressure gas bearing |
| JPH0510330A (en) * | 1991-06-29 | 1993-01-19 | Canon Inc | Static pressure bearing device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695380A (en) * | 2019-11-16 | 2020-01-17 | 洛阳传顺机械设备有限公司 | Ultrasonic wave air static pressure electricity main shaft |
| CN110695380B (en) * | 2019-11-16 | 2024-04-19 | 洛阳传顺机械设备有限公司 | Ultrasonic air static pressure motorized spindle |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN112922961A (en) * | 2021-03-23 | 2021-06-08 | 哈尔滨工业大学 | Static pressure air flotation unit based on porous throttling unit and processing method |
| CN114135583A (en) * | 2021-11-24 | 2022-03-04 | 郑州大学 | High-rigidity large-bearing ultrasonic extrusion suspension bearing |
| CN114135583B (en) * | 2021-11-24 | 2024-03-15 | 郑州大学 | High-rigidity large-bearing ultrasonic extrusion suspension bearing |
| CN114857174A (en) * | 2022-06-16 | 2022-08-05 | 中国工程物理研究院机械制造工艺研究所 | Anti-disturbance restrictor for hydrostatic bearing and hydrostatic guide rail |
| CN115263924A (en) * | 2022-07-18 | 2022-11-01 | 中电科风华信息装备股份有限公司 | Mixed type air bearing with air path and loop based on porous material and air path mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110094425A (en) | A kind of static pressure air-bearing axial bearing | |
| CN110081082A (en) | A kind of static pressure air-bearing transverse bearing | |
| US6623164B1 (en) | Hydrodynamic journal bearing | |
| EP3299648B1 (en) | Groove-type dynamic pressure gas radial bearing | |
| CN202023843U (en) | Gas bearing | |
| CN103267062B (en) | A kind of multilayer bubbling foil dynamical pressure gas lubricated thrust bearing | |
| CN210290492U (en) | Static pressure air-float axial bearing with viscosity and inertial coupling throttling | |
| CN103047221B (en) | Double-action gas suspension is without friction cylinder | |
| CN209340165U (en) | Centrifugal compressor and coolant circulating system with diffuser air supply channel | |
| CN104454992A (en) | Elastic radial air bearing | |
| CN108563907A (en) | A kind of ramp type double square chamber hydrostatic thrust bearing dynamic pressure effect computational methods | |
| CN102401008A (en) | Self-lubricating joint bearing, positioning device and positioning method thereof | |
| JPH09296825A (en) | Static pressure gas bearing | |
| CN105202027B (en) | A kind of hybrid kinetic pressure gas thrust bearing | |
| CN219605837U (en) | Precise ball concave air bearing | |
| JP3106474B2 (en) | Hydrostatic gas bearing | |
| CN208106982U (en) | A kind of list four oil film wedge inner hole heavy-duty sliding bearing of rotation direction | |
| CN105736355A (en) | Flow distribution structure based on dynamic pressure balance of flow distribution plate | |
| CN207289577U (en) | A kind of location structure | |
| CN203051294U (en) | Cylinder barrel air supply pressure-equalizing type air flotation non-friction air cylinder | |
| CN206429412U (en) | Bearing of compressor and rotary compressor | |
| CN111577764B (en) | Hydrostatic bearing, hydrostatic rotary table and hydrostatic spindle | |
| CN210154739U (en) | Small force value calibrating device supporting system | |
| CN203051292U (en) | Double-acting air-suspending zero-friction air cylinder | |
| CN205779865U (en) | A kind of sea water pump coupling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |