CN107120352A - A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape - Google Patents
A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape Download PDFInfo
- Publication number
- CN107120352A CN107120352A CN201710286272.6A CN201710286272A CN107120352A CN 107120352 A CN107120352 A CN 107120352A CN 201710286272 A CN201710286272 A CN 201710286272A CN 107120352 A CN107120352 A CN 107120352A
- Authority
- CN
- China
- Prior art keywords
- bearing
- annular
- square shape
- groove
- supply tank
- 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
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
- F16C32/0651—Details of the bearing area per se
- F16C32/0655—Details of the bearing area per se of supply openings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape.Include inner circle to match and the cylindrical annular bearing body matched with bearing block with rotating shaft, the cylindrical upper bearing block fuel feed hole aligned fit with annular groove and on bearing block of annular bearing body, it is used as annular oil groove, the annular groove is connected with uniform axial fuel inlet hole and radial direction fuel feed hole, respectively leads to the annular fuel feeding groove of throttling channel and square shape of bearing face；There is the annular fuel feeding groove of four square shapes in the inner circle of round bearing body, wherein each square shape annular fuel feeding groove part contains circumferential bearing radial direction fuel feed hole；The inner of square shape annular fuel feeding groove is arc square shape face, and outer end is circumferentially to be connected after bearing inner surface with oil unloading trough, axial then be directly in communication with the outside by bearing internal circular surfaces.Dynamic and hydrostatic bearing of the present invention can work in circumferencial direction both direction, positioning can also axially realized, due also to the area increase of oil supply tank, increase input pressure, increase the flow of fluid, heat more is carried, the dynamic characteristic of the circumference all directions of last bearing is also increased, can comprehensively reduce the possibility of accident generation.
Description
Technical field
The present invention is a kind of electro spindle dynamic and hydrostatic bearing, and particularly a kind of electro spindle with the annular oil supply tank of square shape uses dynamic
Hydrostatic bearing.
Background technology
Hydrodynamic and hydrostatic pressure electro spindle be using Hydrodynamic and-static Bearing as support, by machine tool chief axis function and motor function from
The novel lathe main shaft functional part combined together in structure, it combines high-speed bearing technology, high-speed motor technology, frequency conversion
The key technology such as speed adjusting technique and cooling and lubricating technology, its function is band cutter (or emery wheel) or Work piece high-speed rotation, is realized
High-speed ＆ precise progressive die.At present, electro spindle is based on rolling bearing and hydrostatic bearing, but both modes are all under many circumstances
The drawbacks of having very big.This high speed, the bearing that high-precision electro spindle is used once reaches fatigue life, despite the one of very little
Individual mechanical part, can also make whole machine can not normal work, so as to cause unnecessary failure and waste.
Current existing electro spindle bearing, has some following deficiency：1）In the market will for rotation at a high speed
The electro spindle asked uses rolling bearing, the drawbacks of having one clearly using this bearing, in use for some time due to axle
The abrasion of the ball or roller that hold so that electro spindle needs frequent dismounting and change bearing, such result is just difficult to ensure that it
Preceding precision and job requirement；2）If besides using hydrostatic bearing as the bearing of electro spindle, then can not keep away
The meeting exempted from is due in processing or other reasonses, even more so that bearing inevitably produces dynamic pressure effect, producing unstable
Factor is more；3）Simple hydrodynamic bearing is produced as the again inevitable of the support member of electro spindle in electro spindle start and stop
Raw dry wear, even influence the rotor normal operation 4 of whole equipment）Even the technology of dynamic and hydrostatic bearing is employed simultaneously, but
It is much also simply simply to design oil inlet on the structure design of bearing, has reached the realization of basic function, it is real
Many dynamic and hydrostatic bearings are many in Stiffness on border, and local stress is excessive, Lack of support, or electro spindle rotation
Direction is unidirectional, the reason for as well as oil pocket and too small orifice size, not easy heat radiation so that shafting structure generates too high
Temperature；
The bearing application of the country this part of electro spindle uses rolling bearing more at present, so being badly in need of a kind of rational in infrastructure, property of invention
The reliable dynamic and hydrostatic bearing of energy, will greatly be beneficial to the development of state's interior rotary part.
The content of the invention
It is an object of the invention to the defect for prior art, there is provided a kind of electro spindle use with the annular oil supply tank of square shape
Dynamic and hydrostatic bearing, can be achieved positive and negative direction and rotates operation, axially position, drainage area is big, and it is more to take away heat, reliable.
To reach above-mentioned purpose, technical solution of the present invention is：
A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape, including dynamic and hydrostatic bearing are cylindrical, in dynamic and hydrostatic bearing
Circle, bearing face throttle orifice, bearing face throttling channel, bearing block；The cylindrical dynamic and hydrostatic bearing is to be provided with annular groove, at this
The centre of individual annular groove is circumferentially uniformly to be provided with eight bearing radial direction fuel feed holes, and axially, is also provided with
Eight throttle orifices.The dynamic and hydrostatic bearing inner circle is the oil supply tank for being circumferentially uniform-distribution with four square shape annulars, often
Two sides of the individual groove in rectangle circumferentially are all provided with fuel feed hole and communicated with bearing outer ring annular groove.And each two square
The centre of shape annular oil supply tank is to be provided with an oil unloading trough.The dynamic and hydrostatic bearing end face throttling channel is an oval groove,
Middle is provided with throttle orifice, and is uniformly distributed eight in circumferencial direction.
Compared with prior art, the beneficial effects of the invention are as follows：
Electro spindle dynamic and hydrostatic bearing of the present invention with the annular oil supply tank of square shape can both work in circumferencial direction both direction,
Positioning can be axially being realized, due also to the area increase of oil supply tank, increases input pressure, increase the flow of fluid, more
Many has carried heat, and the dynamic characteristic of the circumference all directions of last bearing is also increased, and can comprehensively reduce accident hair
Raw possibility.
Brief description of the drawings
Fig. 1 is the overall structural representation of electro spindle in the present invention.
Fig. 2 is dynamic and hydrostatic bearing inner ring structure schematic diagram of the invention.
Fig. 3 is dynamic and hydrostatic bearing outer ring structure schematic diagram of the invention.
Fig. 4 is dynamic and hydrostatic bearing profile of the invention.
Fig. 5 is dynamic and hydrostatic bearing end view drawing of the invention.
Wherein：1-bearing face throttling channel；2-bearing face throttle orifice；3-bearing radial direction fuel feed hole；4-bearing square
Shape annular fuel feeding groove；5-bearing radial strut square shape face；6-oil unloading trough；7-bearing top circle annular groove；8-bearing block
Fuel feed hole；9-electro spindle shaft shoulder；10-electro spindle axle sleeve；11-electro spindle magnetic circuit；12-rotating shaft；13-dynamic and hydrostatic bearing body；
14-bearing block；15-end cap.
Embodiment
Below in conjunction with the accompanying drawings, the preferred embodiment of the present invention is elaborated：
Embodiment one：
Referring to Fig. 1 ~ 5, this electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape, including inner circle and rotating shaft（12）Matching and
Cylindrical and bearing block（14）The annular bearing body of matching（13）, it is characterised in that：The annular bearing body（13）In inner circle
There is the annular fuel feeding groove of four axially uniform square shapes（4）, and the annular fuel feeding groove of two adjacent square shapes（4）Between have one
The oil unloading trough of axial direction（6）；Annular bearing body（13）Cylindrical upper carry annular groove（7）With positioned at bearing block（14）On axle
Bearing fuel feed hole（8）Aligned fit, is used as annular oil groove, the annular groove（7）With uniform axial fuel inlet hole（2）Enter with radial direction
Oilhole（3）Connection, respectively leads to the throttling channel of bearing face（1）With the annular fuel feeding groove of square shape（4）；Each annular fuel feeding of square shape
Groove（4）Have and connect circumferential bearing radial direction fuel feed hole（3）；Square shape annular fuel feeding groove（4）Bottom land be arc square shape face
（5）, groove top surface be circumferentially after bearing inner surface with oil unloading trough（6）It is connected.
Embodiment two：
The annular fuel feeding groove of the square shape（4）It is arc square shape face and makes annular bearing body（13）Inner circle constitutes effective rank
Terraced structure, it is ensured that square shape annular fuel feeding groove（4）In fluid be all circumferentially to be flowed from depths toward from shallow, effectively forms dynamic
Press the formation of effect.The radial direction oil inlet（3）Layout be square shape annular groove in circumferencial direction（4）Symmetrically drive bearing in both sides
Fuel feed hole（3）, it is ensured that the rotating shaft（12）In rotating, the formation of the trapezium structure of different directions realizes rotating shaft
（12）Effectively lubricated in the operating of different directions.The annular bearing body（13）The uniform four square shapes of inner circle circumferential direction
Annular fuel feeding groove（14）, made using copper product, enriching fuel delivery, Bearing inner is taken away rapidly due to produced by friction
Heat, improve rotating shaft（12）Accessible maximum (top) speed, it is to avoid because bearing is damaged caused by Bearing inner temperature is too high
It is bad.The annular bearing body（13）Circumferencial direction is provided with four oil unloading troughs（6）, fluid is effectively prevented in Bearing inner square
Shape annular oil supply tank（14）Interfering between working region, more stablizes so as to run.The annular bearing body（13）
End be provided with throttling channel（1）With axial fuel inlet hole（2）, in order to ensure positioning of the bearing in axial direction, pass through annular oil supply tank
（7）The fluid of the inside, from throttle orifice（2）Enter throttling channel（1）Once, annular bearing body（13）The section encounters rotating shaft
（12）Part, will raise oil liquid pressure, and rotating shaft is opened on top（12）, prevent movement of the end in axial direction from having encountered rotating shaft（12）It is middle
Pasta part is kept off, the abrasion of end is caused, the normal operation of shafting is influenceed.
Claims (6)
1. a kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape, including inner circle and rotating shaft（12）Matching and it is cylindrical with
Bearing block（14）The annular bearing body of matching（13）, it is characterised in that：The annular bearing body（13）There is axial direction in inner circle
The annular fuel feeding groove of four uniform square shapes（4）, and the annular fuel feeding groove of two adjacent square shapes（4）Between have axial direction
Oil unloading trough（6）；Annular bearing body（13）Cylindrical upper carry annular groove（7）With positioned at bearing block（14）On bearing block enter
Oilhole（8）Aligned fit, is used as annular oil groove, the annular groove（7）With uniform axial fuel inlet hole（2）With radial direction fuel feed hole
（3）Connection, respectively leads to the throttling channel of bearing face（1）With the annular fuel feeding groove of square shape（4）；Each annular fuel feeding groove of square shape
（4）Have and connect circumferential bearing radial direction fuel feed hole（3）；Square shape annular fuel feeding groove（4）Bottom land be arc square shape face（5）,
Groove top surface be circumferentially after bearing inner surface with oil unloading trough（6）It is connected.
2. the electro spindle dynamic and hydrostatic bearing as claimed in claim 1 with the annular oil supply tank of square shape, it is characterised in that：The square shape
Annular fuel feeding groove（4）It is arc square shape face and makes annular bearing body（13）Inner circle constitutes effective hierarchic structure, it is ensured that
The annular fuel feeding groove of square shape（4）In fluid be all circumferentially to be flowed from depths toward from shallow, effectively forms the shape of dynamic pressure effect
Into.
3. the electro spindle dynamic and hydrostatic bearing as claimed in claim 1 with the annular oil supply tank of square shape, it is characterised in that：The radial direction
Oil inlet（3）Layout be square shape annular groove in circumferencial direction（4）Symmetrically open bearing fuel feed hole in both sides（3）, it is ensured that this turn
Axle（12）In rotating, the formation of the trapezium structure of different directions realizes rotating shaft（12）In operating for different directions
To effective lubrication.
4. the electro spindle dynamic and hydrostatic bearing as claimed in claim 1 with the annular oil supply tank of square shape, it is characterised in that：The annulus
Shape bearing body（13）The annular fuel feeding groove of the uniform four square shapes of inner circle circumferential direction（14）, made using copper product, enriching confession
Oil mass, takes away rapidly Bearing inner due to the heat produced by friction, improves rotating shaft（12）Accessible maximum (top) speed, it is to avoid
Due to Bearing inner temperature it is too high caused by bearing damage.
5. the electro spindle dynamic and hydrostatic bearing as claimed in claim 1 with the annular oil supply tank of square shape, it is characterised in that：The annulus
Shape bearing body（13）Circumferencial direction is provided with four oil unloading troughs（6）, fluid is effectively prevented in the annular fuel feeding of Bearing inner square shape
Groove（14）Interfering between working region, more stablizes so as to run.
6. the electro spindle dynamic and hydrostatic bearing as claimed in claim 1 with the annular oil supply tank of square shape, it is characterised in that：The annulus
Shape bearing body（13）End be provided with throttling channel（1）With axial fuel inlet hole（2）, in order to ensure positioning of the bearing in axial direction, lead to
Cross annular oil supply tank（7）The fluid of the inside, from throttle orifice（2）Enter throttling channel（1）Once, annular bearing body（13）This breaks
Encounter rotating shaft in face（12）Part, will raise oil liquid pressure, and rotating shaft is opened on top（12）, prevent movement of the end in axial direction from having encountered turn
Axle（12）Middle apron pasta part, causes the abrasion of end, influences the normal operation of shafting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286272.6A CN107120352A (en) | 2017-04-27 | 2017-04-27 | A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286272.6A CN107120352A (en) | 2017-04-27 | 2017-04-27 | A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107120352A true CN107120352A (en) | 2017-09-01 |
Family
ID=59725395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286272.6A Pending CN107120352A (en) | 2017-04-27 | 2017-04-27 | A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743351A (en) * | 2020-12-24 | 2021-05-04 | 杭州铁泰自动化科技有限公司 | High-precision dynamic and static pressure main shaft system |
| CN114810829A (en) * | 2022-06-27 | 2022-07-29 | 云南省机械研究设计院有限公司 | Bidirectional large dynamic range hybrid bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470896A1 (en) * | 1979-12-07 | 1981-06-12 | Rollix Defontaine | IMPROVEMENT IN ROTATING DEVICES, PARTICULARLY IN ORIENTATION CROWNS |
| CN102777495A (en) * | 2012-07-24 | 2012-11-14 | 太原科技大学 | Static-dynamic pressure oil film bearing with thrust function |
| CN205388096U (en) * | 2016-03-22 | 2016-07-20 | 宁波圣圭精工科技有限公司 | Hybrid bearing and main shaft of installing hybrid bearing |
| CN205401429U (en) * | 2016-03-30 | 2016-07-27 | 广西恒达电机科技有限公司 | Motor high pressure oil film floating bearing |
| CN205895917U (en) * | 2016-03-22 | 2017-01-18 | 宁波圣圭精工科技有限公司 | Static pressure bearing |
| CN106438677A (en) * | 2016-11-17 | 2017-02-22 | 中国长江动力集团有限公司 | Thrust supporting bearing and cylinder |
-
2017
- 2017-04-27 CN CN201710286272.6A patent/CN107120352A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470896A1 (en) * | 1979-12-07 | 1981-06-12 | Rollix Defontaine | IMPROVEMENT IN ROTATING DEVICES, PARTICULARLY IN ORIENTATION CROWNS |
| CN102777495A (en) * | 2012-07-24 | 2012-11-14 | 太原科技大学 | Static-dynamic pressure oil film bearing with thrust function |
| CN205388096U (en) * | 2016-03-22 | 2016-07-20 | 宁波圣圭精工科技有限公司 | Hybrid bearing and main shaft of installing hybrid bearing |
| CN205895917U (en) * | 2016-03-22 | 2017-01-18 | 宁波圣圭精工科技有限公司 | Static pressure bearing |
| CN205401429U (en) * | 2016-03-30 | 2016-07-27 | 广西恒达电机科技有限公司 | Motor high pressure oil film floating bearing |
| CN106438677A (en) * | 2016-11-17 | 2017-02-22 | 中国长江动力集团有限公司 | Thrust supporting bearing and cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743351A (en) * | 2020-12-24 | 2021-05-04 | 杭州铁泰自动化科技有限公司 | High-precision dynamic and static pressure main shaft system |
| CN114810829A (en) * | 2022-06-27 | 2022-07-29 | 云南省机械研究设计院有限公司 | Bidirectional large dynamic range hybrid bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150075362A1 (en) | Hydrostatic Axial Piston Machine | |
| CN106762151A (en) | A kind of aeroplane engine main bearing inner ring integral structure | |
| CN107120352A (en) | A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape | |
| CN2719455Y (en) | High-speed electric main spindle of hydrostatic-hydrodynamic bearing | |
| CN106944524A (en) | Monoblock type self-lubricating knuckle bearing spin forming method | |
| CN108923569A (en) | A kind of water lubrication electric machine structure | |
| CN102814733A (en) | Large-size end surface processing electric spindle for mixed support of hydrostatic bearing and rolling bearing | |
| CN107511725B (en) | Precise movable center device | |
| CN102374293B (en) | Centrifuge dripping type secondary spiral sealing device | |
| CN208089765U (en) | A kind of tilting bush sliding bearing | |
| CN86206678U (en) | Grinding wheel axle system with cylinder-roller bearing in cylindrical house | |
| CN203471557U (en) | Tapered roller centerless grinding machine double-bearing oil wedge-shaped dynamic pressure main shaft assembly | |
| CN203130358U (en) | Oscillating cylinder type radial plunger hydraulic motor | |
| CN101758456A (en) | Vertical dynamic/static piezoelectric main shaft | |
| CN205363556U (en) | Modified tapered roller centerless grinder's spindle unit | |
| CN211259354U (en) | Bearing structure of blower | |
| CN205552260U (en) | Main shaft supporting system of grinding superfinish equipment | |
| CN101402175B (en) | Independent oil supply structure for oil recess inside and outside primary shaft gathering ring bearing of high-speed machine tool | |
| CN208723678U (en) | A kind of water lubrication electric machine structure | |
| CN204186435U (en) | A kind of foil bearing lubrication is with rotating cavity jet rotor | |
| CN106594080A (en) | Improved wear-resistant shaft sleeve | |
| CN207691606U (en) | A kind of novel vertical machine thrust and guide bearing assembling structure | |
| CN202290933U (en) | Rotary pressing wheel structure | |
| CN201291389Y (en) | Independent oil supply structure for oil recess inside and outside primary shaft gathering ring bearing of high-speed machine tool | |
| CN201609868U (en) | Vertical dynamic-static piezoelectric main shaft |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170901 |