CN101915265B - Elliptical static-pressure sliding bearing - Google Patents
Elliptical static-pressure sliding bearing Download PDFInfo
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- CN101915265B CN101915265B CN2010102822657A CN201010282265A CN101915265B CN 101915265 B CN101915265 B CN 101915265B CN 2010102822657 A CN2010102822657 A CN 2010102822657A CN 201010282265 A CN201010282265 A CN 201010282265A CN 101915265 B CN101915265 B CN 101915265B
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- pressure oil
- static
- static pressure
- oil pocket
- elliptical
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Abstract
The invention relates to an elliptical static-pressure sliding bearing which comprises a bearing body, wherein the working surface of the bearing body forms an elliptical cylindrical surface shape; both ends of a short shaft on the elliptical cylindrical surface of the bearing body are respectively provided with a static-pressure oil chamber I, and both ends of a long shaft are respectively provided with a static-pressure oil chamber II; the wrap angles of the two static-pressure oil chambers I are the same, and the wrap angles of the two static-pressure oil chambers II are the same; and the wrap angles of the static-pressure oil chambers I are larger than that of the static-pressure oil chambers II. The invention can ensure that the revolution track of a journal center in the bearing is of an ellipse shape and provides a support for the processing of elliptical and variable elliptical curves which are widely applied to mechanical and electrical products.
Description
Technical field
The present invention relates to a kind of sliding bearing, especially a kind of elliptical static-pressure sliding bearing.
Background technique
Sliding bearing has extensive use in rotating machinery, can be divided into hydrodynamic sliding bearing by working principle, static-pressure sliding bearing and hybrid sliding bearing.Generally there is not static pressure oil pocket or very little and ignore in the former.The back both all have between the adjacent oil pocket that the static pressure oil pocket exists, its main distinction is hydrostatic bearing oil sealing surface less, and the kinetic pressure of generation is less, is left in the basket; There is big oil sealing surface between the adjacent oil pocket of dynamic and hydrostatic bearing, thereby forms big kinetic pressure.
At present all sliding bearings all are to be main purpose to guarantee that turning axle has high rotating accuracy.That is to say that the gyration center swing of journal centre in bearing is the smaller the better, so axle journal and bearing working face all are cylindrical so.
In mechanical field non-round surface application more and more, as the oval skirt section of the change of motor, horn mouth special pinhole etc., the processing request revolution axle journal of this class curved surface is by oval axle center orbiting motion.Present column working sliding bearing has not only limited the moving range of axle journal in bearing, and is not easy to form oval axle center locus.
Find that by retrieval a kind of elliptic bearing is only arranged in hydraulic bearing at present, well-known, hydraulic bearing is a kind of uncontrollable bearing, can not form oval axle center locus, and it mainly is to produce for the dynamic characteristic that improves bearing.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of rotary track of journal centre in bearing that make, for the ellipse of extensive use in the electronic product, become the elliptical static-pressure sliding bearing that the processing of oval calotte provides support for oval.
For achieving the above object, the present invention adopts following technical proposals:
A kind of elliptical static-pressure sliding bearing, comprise bearing support, the working surface of described bearing support is elliptic cylinder shape, minor axis direction of both ends at bearing support elliptic cylinder shape working surface is provided with a static pressure oil pocket I respectively, in the major axis direction of both ends one static pressure oil pocket II is set respectively, two static pressure oil pocket I cornerites equate, and this cornerite is divided equally by described minor axis, two static pressure oil pocket II cornerites equate and this cornerite is divided equally by described major axis, and the cornerite of described static pressure oil pocket I is greater than the cornerite of described static pressure oil pocket II.
Place, neutral position in static pressure oil pocket I on the described bearing support and the static pressure oil pocket II between adjacent two static pressure oil pockets is equipped with the oil-return groove and the oil outlet of connection; The axial end portion of described static pressure oil pocket I and static pressure oil pocket II is equipped with the sealing oil edge of certain width.
The axle journal that matches with it in the described bearing support cylindroid working surface still is cylindrical so.
Center position is equipped with an oil inlet hole on static pressure oil pocket I on the described bearing support and the static pressure oil pocket II.
In order to adjust the working clearance of bearing, bearing support working surface and axle journal working surface can have the certain taper that adapts sometimes, and like this, the bearing support working surface has just become the circular cone ellipsoid, and axle journal is a conical surface.
The present invention can be axle journal the elliptic motion space is provided, and because oil pocket area difference, when the big oil pocket of the stressed sensing of axle journal, displacement is little, when pointing to small oil cavity displacement big, axle journal circles, its displacement by little-big-little-big, alternate, this is the Changing Pattern of elliptical orbit just.If do not have irregular kinetic pressure on the oil sealing surface, then can be formed directly in oval axle center locus.Oil-return groove and oil outlet are set between adjacent oil pocket reduce this influence exactly.Because kinetic pressure can only reduce, and can not eliminate, so need suitably control oil pocket pressure.
The present invention can make the rotary track of journal centre in bearing for oval, for the ellipse of extensive use in the electronic product, the processing of change oval calotte provide support.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein 1. bearing suppories, 2. static pressure oil pocket I, 3. static pressure oil pocket II, 4. oil-return groove, 5. oil outlet, 6. oil inlet hole, 7. axle journal.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Among Fig. 1, a kind of elliptical static-pressure sliding bearing, comprise bearing support 1, the working surface of described bearing support 1 is elliptic cylinder shape, minor axis direction of both ends at elliptic cylinder shape bearing support 1 working surface is provided with a static pressure oil pocket I 2 respectively, be provided with respectively in the major axis direction of both ends of elliptical bearing body 1 internal surface that 3, two static pressure oil pockets of static pressure oil pocket II I, 2 cornerites equate and this cornerite is divided equally by described minor axis, promptly this cornerite is about the minor axis symmetry; Two static pressure oil pocket II 3 cornerites equate and this cornerite is divided equally by described major axis, and promptly this cornerite is about the major axis symmetry; The cornerite of static pressure oil pocket I 2 is greater than the cornerite of static pressure oil pocket II 3.
Place, neutral position in static pressure oil pocket I 2 on the bearing support 1 and the static pressure oil pocket II 3 between adjacent two static pressure oil pockets is equipped with the oil-return groove 4 and the oil outlet 5 of connection, and the axial end portion of described static pressure oil pocket I 2 and static pressure oil pocket II 3 is equipped with the sealing oil edge of certain width.
Center position is equipped with an oil inlet hole 6 on static pressure oil pocket I 2 on the bearing support 1 and the static pressure oil pocket II 3.
The axle journal 7 that matches with it in the working surface of bearing support 1 of the present invention still is cylindrical so.In order to adjust the working clearance of bearing support, bearing support working surface and axle journal working surface can have the certain taper that adapts sometimes, and the bearing support working surface has just become the circular cone ellipsoid like this, and the axle journal working surface is a conical surface.
The present invention can be axle journal 7 the elliptic motion space is provided, and because oil pocket area difference, when the big oil pocket of the stressed sensing of axle journal, displacement is little, when pointing to small oil cavity displacement big, axle journal circles, its displacement by little-big-little-big, alternate, this is the Changing Pattern of elliptical orbit just.If do not have irregular kinetic pressure on the oil sealing surface, then can be formed directly in oval axle center locus.Oil-return groove and oil outlet are set between adjacent oil pocket reduce this influence exactly.Because kinetic pressure can only reduce, and can not eliminate, so need suitably control oil pocket pressure.
The present invention can make the rotary track of journal centre in bearing for oval, for the ellipse of extensive use in the electronic product, the processing of change oval calotte provide support.
Be an actual processing example below:
If desired the bearing play is adjusted, can make interior working surface of bearing and journal surface have the certain taper that adapts, as 1:100, the long and short axle and the axle journal diameter of above-mentioned bearing support working surface, can be considered the parameter on bearing centre cross section or the arbitrary section, other cross sections meet above-mentioned tapering, and other parameters of bearing are still by above-mentioned manufacturing.The clearance-adjustable that moves axially by bearing.
Claims (3)
1. elliptical static-pressure sliding bearing, comprise bearing support, it is characterized in that: the working surface of described bearing support is elliptic cylinder shape, minor axis direction of both ends at bearing support elliptic cylinder shape working surface is provided with a static pressure oil pocket I respectively, the major axis direction of both ends is provided with a static pressure oil pocket II respectively, two static pressure oil pocket I cornerites equate, and this cornerite is divided equally by described minor axis; Two static pressure oil pocket II cornerites equate, and this cornerite is divided equally by described major axis; The cornerite of described static pressure oil pocket I is greater than the cornerite of described static pressure oil pocket II.
2. elliptical static-pressure sliding bearing according to claim 1 is characterized in that: the place, neutral position in static pressure oil pocket I on the described bearing support and the static pressure oil pocket II between any adjacent two static pressure oil pockets is equipped with the oil-return groove and the oil outlet of connection; The axial end portion of described static pressure oil pocket I and static pressure oil pocket II is equipped with sealing oil edge.
3. elliptical static-pressure sliding bearing according to claim 1 is characterized in that: the axle journal that matches with it in the described bearing support cylindroid working surface still is cylindrical so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102822657A CN101915265B (en) | 2010-09-15 | 2010-09-15 | Elliptical static-pressure sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102822657A CN101915265B (en) | 2010-09-15 | 2010-09-15 | Elliptical static-pressure sliding bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101915265A CN101915265A (en) | 2010-12-15 |
| CN101915265B true CN101915265B (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102822657A Expired - Fee Related CN101915265B (en) | 2010-09-15 | 2010-09-15 | Elliptical static-pressure sliding bearing |
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| Country | Link |
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| CN (1) | CN101915265B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345153A (en) * | 2019-06-11 | 2019-10-18 | 东南大学 | A kind of dynamic and static pressure submerged bearing with the opposed unequal-area water cavity of slot type water cavity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765372Y (en) * | 2004-12-08 | 2006-03-15 | 湖南同心科技有限公司 | Dynamic/static pressure bearing electric main shaft |
| CN101070879A (en) * | 2007-06-15 | 2007-11-14 | 辽宁科技大学 | Static-pressure supporting spherical self-aligning bearing seat |
| CN101153631A (en) * | 2006-09-25 | 2008-04-02 | 湖南大学 | Exterior-clearance throttle cavity internal-hole type scavenging hydrostatic bearing |
| CN101579841A (en) * | 2009-06-17 | 2009-11-18 | 重庆大学 | Hydro-hybrid bearing used for grinding wheel main shaft of grinding machine |
| CN201779140U (en) * | 2010-09-15 | 2011-03-30 | 山东大学 | Elliptical static pressure sliding bearing |
-
2010
- 2010-09-15 CN CN2010102822657A patent/CN101915265B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765372Y (en) * | 2004-12-08 | 2006-03-15 | 湖南同心科技有限公司 | Dynamic/static pressure bearing electric main shaft |
| CN101153631A (en) * | 2006-09-25 | 2008-04-02 | 湖南大学 | Exterior-clearance throttle cavity internal-hole type scavenging hydrostatic bearing |
| CN101070879A (en) * | 2007-06-15 | 2007-11-14 | 辽宁科技大学 | Static-pressure supporting spherical self-aligning bearing seat |
| CN101579841A (en) * | 2009-06-17 | 2009-11-18 | 重庆大学 | Hydro-hybrid bearing used for grinding wheel main shaft of grinding machine |
| CN201779140U (en) * | 2010-09-15 | 2011-03-30 | 山东大学 | Elliptical static pressure sliding bearing |
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| Publication number | Publication date |
|---|---|
| CN101915265A (en) | 2010-12-15 |
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Granted publication date: 20111116 Termination date: 20140915 |
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