CN102661323A - Hydrostatic bearing - Google Patents
Hydrostatic bearing Download PDFInfo
- Publication number
- CN102661323A CN102661323A CN2012101530044A CN201210153004A CN102661323A CN 102661323 A CN102661323 A CN 102661323A CN 2012101530044 A CN2012101530044 A CN 2012101530044A CN 201210153004 A CN201210153004 A CN 201210153004A CN 102661323 A CN102661323 A CN 102661323A
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- China
- Prior art keywords
- oil
- bearing
- oil pocket
- bearing bush
- oil chamber
- 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.)
- Granted
Links
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 94
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a hydrostatic bearing which comprises a main shaft, a main shaft box and a main shaft box end cover, wherein the main shaft is arranged in the main shaft box; the bearing also comprises an adjusting ring, an oil inlet hole and an oil outlet hole; the main shaft box is provided with a bearing bush, a bearing bush oil chamber, a thrust oil chamber and an oil return oil chamber, and the thrust oil chamber is arranged at the front end of the bearing bush oil chamber; a bearing bush annular groove is arranged at the bottom of the bearing bush oil chamber, a shaft hole is arranged on the bearing bush annular groove, and the hydraulic oil in the oil inlet hole is transmitted to the bearing bush oil chamber and the thrust oil chamber through the shaft hole; and the oil return oil chamber is arranged in the bearing bush oil chamber, and the hydraulic oil in the bearing bush oil chamber and the thrust oil chamber is transmitted to all oil holes through the shaft hole. According to the hydrostatic bearing, a special throttler is not needed, and the bearing bush does not need a special oil chamber; a bearing bush hole serves as the coil chamber, under the situation that all parameter are the same, the bearing force of the shaft oil supply is greater than that of the bearing bush oil supply; and as the pore throttling manner is omitted, the hydrostatic bearing has the characteristics of low noise and low vibration.
Description
Technical field
The present invention relates to a kind of axis system, relate in particular to a kind of hydrostatic bearing.
Background technique
The hydrostatic bearing application study surpasses 100 years, applied to a lot of fields at present, and structural type is varied, but all is that what to adopt that the viscosity oil that in the bearing shell chamber, supplies certain pressure after the throttling realizes (is the bearing shell fuel system.
There is following shortcoming in existing static pressure axle:
1, hydrostatic bearing is when using orifice restriction device and capillary flow controller, because the flow controller aperture is very little, so be easy to stop up.
2, the bearing shell of hydrostatic bearing not only need leave oil pocket, and also very strict to the required precision of oil pocket.
Summary of the invention
For solving above-mentioned middle problem and the defective that exists; The invention provides a kind of employing axle fuel system, after promptly pressure oil gets into the bearing shell circular groove since symmetrical distribution arranged on the axle radially reach axial bore; Pressure oil must get in the axis hole; Through different oil circuits, pressure oil is sent into and is radially reached in the oil of axial bearing shell chamber the most at last, realizes the hydrostatic bearing of full liquid lubrication.Said technological scheme is following:
A kind of hydrostatic bearing comprises:
Main shaft, headstock and headstock end cap; Said main shaft is arranged in the headstock; Said bearing also comprises: adjustment ring, oil inlet hole and oil outlet, and said headstock is provided with bearing shell, bearing shell oil pocket, thrust oil pocket and oil return oil pocket, and said thrust oil pocket is arranged on the front end of said bearing shell oil pocket; The bottom of said bearing shell oil pocket is provided with the bearing shell circular groove, and the bearing shell circular groove is provided with axis hole, through said axis hole the hydraulic oil in the oil inlet hole is transported to bearing shell oil pocket and thrust oil pocket; Said oil return oil pocket is arranged in the said bearing shell oil pocket, and through said axis hole the hydraulic oil in bearing shell oil pocket and the thrust oil pocket is delivered to institute's oilhole.
The beneficial effect of technological scheme provided by the invention is:
1, do not need special flow controller.
2, bearing shell does not need special oil pocket, and the bearing shell hole itself is exactly an oil pocket.
3, under the same situation of all parameters, the axle fuel feeding is bigger than bearing shell fuel feeding bearing capacity.
So 4, owing to remove the characteristics that the orifice restriction mode has the low vibration of low noise.
Description of drawings
Figure 1A, 1B and 1C are the hydrostatic bearing sectional views;
Fig. 2 is radially oil channel structures figure of bearing;
Fig. 3 is bearing thrust oil channel structures figure.
Embodiment
For making the object of the invention, technological scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below:
Referring to Figure 1A, 1B and 1C is the hydrostatic bearing sectional view; Hydrostatic bearing comprises main shaft 1, headstock and headstock end cap; Said main shaft is arranged in the headstock; Said bearing also comprises: adjustment ring 2, oil inlet hole 3 and oil outlet 4, and said headstock is provided with bearing shell 12, bearing shell oil pocket 5, thrust oil pocket 6 and oil return oil pocket 7, and said thrust oil pocket is arranged on the front end of said bearing shell oil pocket; The bottom of said bearing shell oil pocket is provided with bearing shell circular groove 8, and the bearing shell circular groove is provided with axis hole 9, through said axis hole the hydraulic oil in the oil inlet hole is transported to bearing shell oil pocket and thrust oil pocket; Said oil return oil pocket is arranged in the said bearing shell oil pocket, and through said axis hole the hydraulic oil in bearing shell oil pocket and the thrust oil pocket is delivered to institute's oilhole.
Above-mentioned adjustment ring is arranged on the outside of said thrust oil pocket, is used to adjust the gap of thrust oil pocket.Wherein, the thickness of adjustment ring has certain difference with the thickness that axle is gone up greatest circle, and the size of difference is the size of decision bearing axial bearing capacity directly, so guarantee designing requirement through the way of continuous grinding adjustment ring.
Above-mentioned headstock end cap comprises front cover 10 and rear end cover 11, is separately positioned on the front-end and back-end of said headstock.
The maximum difference of present embodiment and existing hydrostatic bearing is to adopt the axle fuel system; Be after hydraulic oil gets into the bearing shell circular groove from oil inlet hole; Get into (like Fig. 2, shown in Figure 3) in bearing shell oil pocket and the thrust oil pocket respectively through a plurality of axis holes 9 that are provided with on the bearing shell circular groove; Reach the effect of pure liquid lubrication, last hydraulic oil flows out from oil outlet through the oil return oil pocket.
The foregoing description has been broken the whole modes that adopt watt fuel feeding of hydrostatic bearing in the past, and tool one lattice ground adopts an axle fuel system.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. hydrostatic bearing; Comprise main shaft, headstock and headstock end cap; Said main shaft is arranged in the headstock, it is characterized in that, said bearing also comprises: adjustment ring, oil inlet hole and oil outlet; Said headstock is provided with bearing shell, bearing shell oil pocket, thrust oil pocket and oil return oil pocket, and said thrust oil pocket is arranged on the front end of said bearing shell oil pocket; The bottom of said bearing shell oil pocket is provided with the bearing shell circular groove, and the bearing shell circular groove is provided with axis hole, through said axis hole the hydraulic oil in the oil inlet hole is transported to bearing shell oil pocket and thrust oil pocket; Said oil return oil pocket is arranged in the said bearing shell oil pocket, and through said axis hole the hydraulic oil in bearing shell oil pocket and the thrust oil pocket is delivered to all oilholes.
2. hydrostatic bearing according to claim 1 is characterized in that said adjustment ring is arranged on the outside of said thrust oil pocket, is used to adjust the gap of thrust oil pocket.
3. hydrostatic bearing according to claim 1 is characterized in that, said headstock end cap comprises front cover and rear end cover, is separately positioned on the front-end and back-end of said headstock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153004.4A CN102661323B (en) | 2012-05-17 | 2012-05-17 | A kind of hydrostatic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153004.4A CN102661323B (en) | 2012-05-17 | 2012-05-17 | A kind of hydrostatic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102661323A true CN102661323A (en) | 2012-09-12 |
| CN102661323B CN102661323B (en) | 2015-09-16 |
Family
ID=46770871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210153004.4A Active CN102661323B (en) | 2012-05-17 | 2012-05-17 | A kind of hydrostatic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102661323B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143905A (en) * | 2013-02-28 | 2013-06-12 | 朱光波 | Micro-engraving machine tool |
| CN103862070A (en) * | 2014-03-06 | 2014-06-18 | 浙江工业大学 | Small-sized hydraulic vibrating main shaft structure |
| CN104100637A (en) * | 2014-07-25 | 2014-10-15 | 温州华聚科技有限公司 | Protective mechanism for hybrid bearing matched with machine tool main shaft and machine tool |
| CN104847793A (en) * | 2015-04-08 | 2015-08-19 | 河南科技大学 | Novel machine hydrostatic bearing |
| CN110259827A (en) * | 2019-06-24 | 2019-09-20 | 大连贝林轴承仪器有限公司 | A kind of oil hydrostatic spindle system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148102A (en) * | 1985-12-20 | 1987-07-02 | Toyoda Mach Works Ltd | Main spindle device |
| CN101060262A (en) * | 2007-05-31 | 2007-10-24 | 熊万里 | Built-in type hybrid motor spindle |
| JP2009197942A (en) * | 2008-02-22 | 2009-09-03 | Ntn Corp | Gas bearing spindle |
-
2012
- 2012-05-17 CN CN201210153004.4A patent/CN102661323B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148102A (en) * | 1985-12-20 | 1987-07-02 | Toyoda Mach Works Ltd | Main spindle device |
| CN101060262A (en) * | 2007-05-31 | 2007-10-24 | 熊万里 | Built-in type hybrid motor spindle |
| JP2009197942A (en) * | 2008-02-22 | 2009-09-03 | Ntn Corp | Gas bearing spindle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143905A (en) * | 2013-02-28 | 2013-06-12 | 朱光波 | Micro-engraving machine tool |
| CN103143905B (en) * | 2013-02-28 | 2016-09-07 | 深圳朱光波机械科技有限公司 | A kind of miniature carving lathe |
| CN103862070A (en) * | 2014-03-06 | 2014-06-18 | 浙江工业大学 | Small-sized hydraulic vibrating main shaft structure |
| CN104100637A (en) * | 2014-07-25 | 2014-10-15 | 温州华聚科技有限公司 | Protective mechanism for hybrid bearing matched with machine tool main shaft and machine tool |
| CN104100637B (en) * | 2014-07-25 | 2016-05-11 | 温州华聚科技有限公司 | Protection mechanism and lathe with the supporting dynamic and hydrostatic bearing of machine tool chief axis |
| CN104847793A (en) * | 2015-04-08 | 2015-08-19 | 河南科技大学 | Novel machine hydrostatic bearing |
| CN104847793B (en) * | 2015-04-08 | 2017-11-03 | 河南科技大学 | A kind of novel static pressure bearing and its encapsulating method |
| CN110259827A (en) * | 2019-06-24 | 2019-09-20 | 大连贝林轴承仪器有限公司 | A kind of oil hydrostatic spindle system |
| CN110259827B (en) * | 2019-06-24 | 2020-11-10 | 大连贝林轴承仪器有限公司 | Oil static pressure main shaft system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102661323B (en) | 2015-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN BOFENG BEARING INSTRUMENTS CO., LTD. Free format text: FORMER OWNER: JIAO ZHENGYU Effective date: 20150906 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150906 Address after: 116038 68A, 8 China World Trade Center street, Ganjingzi District, Liaoning, Dalian Patentee after: DALIAN BOFENG BEARING INSTRUMENTS LTD. Address before: 116038 No. 8, China World Trade Center street, Ganjingzi District, Liaoning, Dalian Patentee before: Jiao Zhengyu |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116038 68A, 8 China World Trade Center street, Ganjingzi District, Dalian, Liaoning. Patentee after: DALIAN BAISHENGYUAN TECHNOLOGY Co.,Ltd. Address before: 116038 68A, 8 China World Trade Center street, Ganjingzi District, Dalian, Liaoning. Patentee before: DALIAN BOFENG BEARING INSTRUMENTS LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A type of hydrostatic bearing Effective date of registration: 20230830 Granted publication date: 20150916 Pledgee: Industrial Bank Limited by Share Ltd. Dalian branch Pledgor: DALIAN BAISHENGYUAN TECHNOLOGY Co.,Ltd. Registration number: Y2023210000220 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |