CN106763190B - A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure - Google Patents
A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure Download PDFInfo
- Publication number
- CN106763190B CN106763190B CN201710084544.4A CN201710084544A CN106763190B CN 106763190 B CN106763190 B CN 106763190B CN 201710084544 A CN201710084544 A CN 201710084544A CN 106763190 B CN106763190 B CN 106763190B
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- China
- Prior art keywords
- hole
- mounting hole
- negative poisson
- ratio structure
- feeding device
- 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
- 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
- F16C32/0629—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 liquid cushion, e.g. oil cushion
- F16C32/064—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 liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0644—Details of devices to control the supply of liquids to the bearings
-
- 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
- F16C32/0629—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 liquid cushion, e.g. oil cushion
- F16C32/064—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 liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0651—Details of the bearing area per se
- F16C32/0655—Details of the bearing area per se of supply openings
Abstract
The invention discloses a kind of intelligent dynamic and hydrostatic bearings based on negative poisson's ratio structure, including main shaft, bearing body and oil feeding device, bearing body is sleeved on the main shaft, mounting hole is provided on bearing body, oil feeding device is mounted in mounting hole, interconnected the first static pressure chamber and the second static pressure chamber are provided on the loading end of bearing body, oil feeding device is connect by the way that the oil inlet of mounting hole bottom is arranged in the second static pressure chamber, and oil feeding device is using negative poisson's ratio structure for realizing fuel control.The present invention utilizes the distinctive auxetic effect of negative poisson's ratio structure, bear vibration can be effectively reduced and reduced eccentric, the problems such as to improve kinematic accuracy, while reducing the dependence under high-speed working condition to bearing clearance, avoiding traditional high-precision dynamic and hydrostatic bearing processing difficulties and easily blocking.
Description
[technical field]
The invention belongs to dynamic and hydrostatic bearing technical field of structures in sliding bearing field, and in particular to be used for high-accuracy rotation
The intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure in machinery.
[background technique]
Dynamic and hydrostatic bearing combines the characteristics of hydrodynamic bearing and hydrostatic bearing, can be formed in than the wider range of speeds high
Pressure lubricating film.Dynamics and shock resistance ensure that the precision and steady operating of main shaft.Main shaft and bearing are separated by lubricating film,
The theoretical service life is very long.Therefore, dynamic and hydrostatic bearing has the characteristics that high-bearing capacity, high rigidity and long-life, in high speed, high-accuracy machine
There is biggish application potential in bed.However high speed and high-precision requirement dynamic and hydrostatic bearing have very high precision and rigidity, can support
The exciting etc. of anti-impact force, this makes the radius clearance of dynamic and hydrostatic bearing usually only have more than ten microns, design to bearing and adds
Work requirement is high, and very big difficulty is also brought to dependence test.In addition, more existing smart to improve dynamic and hydrostatic bearing operation
Degree and using control strategy to exist influences the problems such as speed is slow, control precision is low.
[summary of the invention]
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that using negative poisson's ratio structure
A kind of dynamic and hydrostatic bearing has been redesigned, certain adaptive ability is made it have, it being capable of disturbance to occurring in operation process
Quick response is made Deng the factor for influencing kinematic accuracy and is adjusted automatically, to solve high speed and high-precision to bearing clearance
Excessive demand reduces difficulty of the dynamic and hydrostatic bearing in designing and processing and test.
The invention adopts the following technical scheme:
A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure, including main shaft, bearing body and oil feeding device, it is described
Bearing body is sleeved on the main shaft, and mounting hole is provided on the bearing body, and the oil feeding device is mounted on the peace
It fills in hole, interconnected the first static pressure chamber and the second static pressure chamber, the oil inlet is provided on the loading end of the bearing body
Device is connect by the way that the oil inlet of the mounting hole bottom is arranged in the second static pressure chamber, and the oil feeding device is using negative pool
Pine is than structure for realizing fuel control.
Further, the oil feeding device includes front end, middle-end and rear end, is provided in the front end and middle-end main logical
Hole, is provided with auxiliary through-hole between the middle-end and the rear end, the main through-hole and the auxiliary through-hole collectively form the oil inlet
Channel.
Further, the rear end is negative poisson's ratio structure, and diameter is less than the internal diameter of the mounting hole, the rear end it is outer
The internal diameter of diameter and the mounting hole constitutes oil inlet gap.
Further, the front end is connect with the hole shoulder axially position of the mounting hole, is fixed by pressure head.
Further, the middle-end and the mounting hole are cooperatively connected using radial positioning, the middle-end and the installation
There are two sealing rings for setting between hole.
Further, the auxiliary through-hole includes the first auxiliary through-hole and the second auxiliary through-hole being arranged in a mutually vertical manner.
Further, it is provided with internal screw thread in the main through-hole, for installing oil inlet pipe.
Further, pyramidal structure is set as between the mounting hole bottom and the oil inlet, the pyramidal structure
Top is connect with the oil inlet.
Further, the mounting hole is evenly arranged with multiple along the bearing body, is all provided in each mounting hole
It is equipped with oil feeding device.
Further, the chamber of the first static pressure chamber is less than the second static pressure chamber.
Compared with prior art, the present invention at least has the advantages that
The present invention is using the oil charging structure design based on negative poisson's ratio structure, by being arranged on bearing body using negative pool
Pine is than the oil feeding device of structure, and oil feeding device is by be interconnected on mounting hole and oil inlet and bearing body loading end two
The connection of static pressure chamber, oil feeding device forms intelligent dynamic and hydrostatic bearing using negative poisson's ratio structure, distinctive using negative poisson's ratio structure
Auxetic effect realizes fuel control, can be effectively reduced bear vibration and reduce bias, to improve kinematic accuracy, simultaneously
The dependence under high-speed working condition to bearing clearance is reduced, traditional high-precision dynamic and hydrostatic bearing processing difficulties and easily blocking etc. are avoided
Problem.
Further, rear end is negative poisson's ratio structure, and diameter is less than the internal diameter of mounting hole, the outer diameter of rear end and mounting hole
Internal diameter constitutes oil inlet gap, can design different gaps according to the actual working conditions, is more advantageous to and controls to bearing operation
System.
Further, front end and hole shoulder use axially position, convenient for the fixed and positioned of oil feeding device.
Further, two sealing rings are set between middle-end and mounting hole, main through-hole and two auxiliary through-holes are carried out effective
Sealing.
Further, two auxiliary through-holes are arranged in a mutually vertical manner, it is easy to process and be conducive to lubricant medium even between oil inlet
Gap.
Further, it is provided with internal screw thread in main through-hole, facilitates the installation of oil inlet pipe.
Further, it is set as pyramidal structure between mounting hole bottom and oil inlet, convenient for the processing in hole.
Further, four oil feeding devices are evenly arranged on bearing body, using the formation of complete lubricating film, make main shaft stress
Uniformly.
Further, the chamber of the first static pressure chamber forms wedge gap less than the second static pressure chamber, increases dynamic pressure effect.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
[Detailed description of the invention]
Fig. 1 is overall structure of the present invention；
Fig. 2 is oil charging structure partial enlargement diagram of the present invention.
Wherein: 1. main shafts；2. bearing body；2-1. the first static pressure chamber；2-2. the second static pressure chamber；2-3. oil inlet；2-4.
Mounting hole；The hole 2-5. shoulder；3. oil feeding device；3-1. rear end；The auxiliary through-hole of 3-2a. first；The auxiliary through-hole of 3-2b. second；3-3. master is logical
Hole；3-4. front end；3-5. middle-end；4. pressure head；5. sealing ring.
[specific embodiment]
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term " on ", "top", "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as instruction or
It implies relative importance or implicitly indicates the quantity of indicated technical characteristic.The spy of " first ", " second " is defined as a result,
Sign can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The invention discloses a kind of intelligent dynamic and hydrostatic bearings based on negative poisson's ratio structure, are arranged using on bearing body
Oil feeding device.The loading end of bearing body includes static pressure chamber, oil inlet and mounting hole.Oil feeding device is by front end, middle-end and rear end
Three parts composition.Including oil inlet, the oil feeding device using negative poisson's ratio structure, two sealing rings being arranged in bearing body
And pressure head.
The hole shoulder axially position of front end and mounting hole, is fixed using pressure head.Middle-end and mounting hole radial positioning cooperate.
Rear end realizes that outer diameter is less than the internal diameter of mounting hole using negative poisson's ratio structure, and the outer diameter of rear end and the internal diameter of mounting hole are constituted
Oil inlet gap.
Three through-holes for oil inlet are provided on oil feeding device, including one for installing the main through-hole and two of oil inlet pipe
A orthogonal auxiliary through-hole, these three through-holes and oil inlet gap collectively form the oil inlet passage of intelligent dynamic and hydrostatic bearing.Using
Oil charging structure design based on negative poisson's ratio structure, can be effectively reduced bear vibration and reduce bias, to improve movement
Precision, while also avoiding traditional high-precision dynamic and hydrostatic bearing processing difficulties and easy the problems such as blocking.
It is specific as follows:
It please refers to shown in Fig. 1 and Fig. 2, a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure of the present invention, including master
Axis 1, bearing body 2 and the oil feeding device 3 based on negative poisson's ratio structure, bearing body 2 are sleeved on main shaft 1.Bearing body 2
On be provided with the mounting hole 2-4 of T-type structure, the first interconnected static pressure chamber 2-1 is provided on the loading end of bearing body 2
It is connect by oil inlet 2-3 with the second static pressure chamber 2-2 with the second static pressure chamber 2-2, mounting hole 2-4, the setting of oil feeding device 3 is being installed
It in the 2-4 of hole, is fastened by pressure head 4, is connect with oil inlet 2-3 and the second static pressure chamber 2-2 and the first static pressure chamber 2-1, by using
The oil feeding device of negative poisson's ratio structure realizes that fuel control forms the intelligent dynamic and hydrostatic bearing.
Oil feeding device 3 is made of front end 3-4, middle-end 3-5 and rear end 3-1 three parts, the hole of front end 3-4 and mounting hole 2-4
Shoulder 2-5 axially position, is fixed by pressure head 4.Middle-end 3-5 and mounting hole 2-4 radial positioning cooperate, middle-end 3-5 and installation
Sealing ring 5, preferably two are provided between the 2-4 of hole.Rear end 3-1 realizes that rear end 3-1 diameter is less than peace using negative poisson's ratio structure
The internal diameter for filling hole 2-4, is gap-matched, and the outer diameter of rear end 3-1 and the internal diameter of mounting hole 2-4 constitute oil inlet gap.
It is provided with main through-hole 3-3 in front end 3-4 and middle-end 3-5, internal screw thread is provided in main through-hole 3-3, for being installed into
Oil pipe line is provided with the first auxiliary auxiliary through-hole 3-2b of through-hole 3-2a and second, the first auxiliary through-hole 3- between middle-end 3-5 and rear end 3-1
The auxiliary through-hole 3-2b of 2a and second is arranged in a mutually vertical manner.Main through-hole 3-3, the first auxiliary through-hole 3-2a, the second auxiliary through-hole 3-2b and described
Oil inlet gap collectively forms the oil inlet passage of intelligent dynamic and hydrostatic bearing.
Preferably, mounting hole 2-4 is set as pyramidal structure, the top of oil inlet 2-3 and pyramidal structure at oil inlet 2-3
Portion's connection.
Mounting hole 2-4 is evenly arranged with multiple along the bearing body 2, is respectively provided with oil feeding device in each mounting hole 2-4
3, each oil feeding device 3 is correspondingly connected with one group of second static pressure chamber 2-2 and the first static pressure chamber 2-1.
Preferably, four mounting hole 2-4 are set on bearing body 2, and four oil feeding devices 3 are evenly arranged on the every of bearing body 2
On a mounting hole 2-4, by 2 quartering of bearing body.
Preferably, chamber of the chamber of the first static pressure chamber 2-1 less than the second static pressure chamber 2-2, oil feeding device 3 pass through oil inlet
2-3 is connect with the second static pressure chamber 2-2 and the first static pressure chamber 2-1.
When work, lubricant medium has certain pressure distribution in bearing, and the rear end 3-1 of each oil charging structure will will receive
Different degrees of pressure and shrink.Bearing lubrication gap changes under by External force interference.On the one hand, lubrication gap becomes smaller
Areal pressure increase, lubrication film pressure suffered by the rear end 3-1 of oil feeding device 3 increases, due to the rear end of oil feeding device 3
3-1 is using negative poisson's ratio structure, so rear end 3-1 can further be compressed when pressure increases, outer diameter will subtract
Small, oil inlet gap composed by rear end 3-1 and mounting hole 2-4 will increase, and reduce the throttle effect in oil inlet gap, thus make into
Input pressure at oilhole 2-3 increases.
On the other hand, the areal pressure that lubrication gap becomes larger will reduce, similarly, suffered by the rear end 3-1 of oil feeding device 3
Lubrication film pressure decreases, since the rear end 3-1 of oil feeding device 3 is using negative poisson's ratio structure, so rear end 3-1 is in institute
It can be extended when the pressure reduction received, outer diameter will increase, and oil inlet gap composed by rear end 3-1 and mounting hole 2-4 will reduce, and increase
The throttle effect in oil inlet gap is added, so that the input pressure at fuel feed hole 2-3 be made to reduce.
In the input pressure with External force interference and after changing of each fuel feed hole, bearing will be again extensive under new input pressure
Original steady state of motion is arrived again, to ensure that the kinematic accuracy of bearing.
Above embodiments are only a preferred embodiment of the invention, and the present invention is not limited to above-mentioned implementation
Example, anyone skilled in the art in the technical scope disclosed by the present invention, the variation that can readily occur in or replace
It changes, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure, it is characterised in that: including main shaft (1), bearing body (2)
With oil feeding device (3), the bearing body (2) is sleeved on the main shaft (1), is provided with installation on the bearing body (2)
Hole (2-4), the oil feeding device (3) are mounted in the mounting hole (2-4), the oil feeding device (3) include front end (3-4),
It is provided with main through-hole (3-3) in middle-end (3-5) and rear end (3-1), the front end (3-4) and middle-end (3-5), the middle-end (3-
5) auxiliary through-hole is provided between the rear end (3-1), the main through-hole (3-3) and the auxiliary through-hole collectively form the oil inlet
Channel, the rear end (3-1) are negative poisson's ratio structure, and diameter is less than the internal diameter of the mounting hole (2-4), the rear end (3-1)
Outer diameter and the internal diameter of the mounting hole (2-4) constitute oil inlet gap, be provided on the loading end of the bearing body (2) mutually
The chamber of the first static pressure chamber (2-1) and the second static pressure chamber (2-2) of connection, the first static pressure chamber (2-1) is less than described second
Static pressure chamber (2-2), the oil feeding device (3) is by setting in the oil inlet (2-3) of the bottom the mounting hole (2-4) and described the
The connection of two static pressure chambers (2-2), the oil feeding device (3) realize that fuel control forms the intelligent sound using negative poisson's ratio structure
Last item is held.
2. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
Front end (3-4) is connect with hole shoulder (2-5) axially position of the mounting hole (2-4), fixed by pressure head (4).
3. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
Middle-end (3-5) and the mounting hole (2-4) are cooperatively connected using radial positioning, the middle-end (3-5) and the mounting hole (2-4)
Between setting there are two sealing ring (5).
4. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
Auxiliary through-hole includes the first auxiliary through-hole (3-2a) and the second auxiliary through-hole (3-2b) being arranged in a mutually vertical manner.
5. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
It is provided with internal screw thread in main through-hole (3-3), for installing oil inlet pipe.
6. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
Be set as pyramidal structure between the mounting hole bottom (2-4) and the oil inlet (2-3), the top of the pyramidal structure and it is described into
Hydraulic fluid port (2-3) connection.
7. a kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure according to claim 1, it is characterised in that: described
Mounting hole (2-4) is evenly arranged with multiple along the bearing body (2), is provided with oil inlet in each mounting hole (2-4)
Device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084544.4A CN106763190B (en) | 2017-02-16 | 2017-02-16 | A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084544.4A CN106763190B (en) | 2017-02-16 | 2017-02-16 | A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure |
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| CN106763190A CN106763190A (en) | 2017-05-31 |
| CN106763190B true CN106763190B (en) | 2018-12-11 |
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| CN201710084544.4A Expired - Fee Related CN106763190B (en) | 2017-02-16 | 2017-02-16 | A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107314033A (en) * | 2017-07-27 | 2017-11-03 | 天津大学 | A kind of gas bearing and its manufacture method |
| CN108775333B (en) * | 2018-07-27 | 2024-03-08 | 贵州伟昭科技有限责任公司 | Dynamic and static pressure bearing capable of being controlled online and control method thereof |
| CN110628572B (en) * | 2019-11-11 | 2023-06-16 | 中国农业科学院兰州畜牧与兽药研究所 | Yak DNA extraction device using hydrostatic bearing capable of adapting to pressure change |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101576121B (en) * | 2009-06-17 | 2011-03-30 | 重庆大学 | Static-dynamic mixed oil film bearing |
| CN101614239B (en) * | 2009-07-28 | 2011-06-01 | 西安交通大学 | Water lubrication dynamic and hydrostatic bearing with low temperature rise |
| JP2013096445A (en) * | 2011-10-28 | 2013-05-20 | Jtekt Corp | Variable throttle type static-pressure bearing |
| CN102562828B (en) * | 2012-02-14 | 2013-07-17 | 湖南大学 | Controllable restrictor |
| US9416839B2 (en) * | 2012-07-12 | 2016-08-16 | Mkp Structural Design Associates, Inc. | Bushings and bumpers based upon NPR (negative poisson's ratio) structures |
| CN103909469B (en) * | 2014-04-25 | 2016-03-23 | 湖南大学 | A kind of grinder grinding wheel main shaft film throttling dynamic and hydrostatic bearing |
| JP6394370B2 (en) * | 2014-12-24 | 2018-09-26 | 株式会社ジェイテクト | Variable throttle hydrostatic bearing |
| CN105179480B (en) * | 2015-09-09 | 2017-10-03 | 华中科技大学 | A kind of gas suspension device of active control orifice inlet port air pressure |
| CN206555288U (en) * | 2017-02-16 | 2017-10-13 | 西安建筑科技大学 | A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure |
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Effective date of registration: 20211027 Address after: 471000 No. 64, floor 4, building 3, Luoyang Overseas Students Pioneer Park, No. 22, Binhe North Road, high tech Zone, Luoyang pilot Free Trade Zone, Luoyang, Henan Patentee after: Luoyang Shenshi Bearing Technology Co.,Ltd. Address before: 710055 Yanta Road 13, Xi'an City, Shaanxi Province Patentee before: XIAN University OF ARCHITECTURE AND TECHNOLOG |
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