CN101625014A - Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge - Google Patents
Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge Download PDFInfo
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- CN101625014A CN101625014A CN200910090717A CN200910090717A CN101625014A CN 101625014 A CN101625014 A CN 101625014A CN 200910090717 A CN200910090717 A CN 200910090717A CN 200910090717 A CN200910090717 A CN 200910090717A CN 101625014 A CN101625014 A CN 101625014A
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Abstract
The invention discloses a static-pressure oil pad with a damping flow channel oil chamber and a damping sealing oil edge, which belongs to the technical field of static pressure support. The static-pressure oil pad enables hydraulic oil to form turbulent vortexes in the damping flow channel and a damping groove by reducing the depth of an oil chamber of a conventional static-pressure oil pad and respectively arranging the damping flow channel and the damping groove on the surfaces of the oil chamber and the sealing oil edge so as to ensure that effective circulation areas in oil film gaps are reduced, thereby realizing pressure gain and increasing the carrying capacity. The static-pressure oil pad has simple structure, can reduce the temperature rising and the frictional power of the hydraulic oil in the static-pressure oil pad at the same time of increasing the carrying capacity and the rigidity of the static-pressure oil pad and is particularly suitable for a large-scale heavy precise static-pressure rotary table.
Description
Technical field
The invention belongs to the hydrostatic support technical field, be specifically related to a kind of static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge.This have increase resistance Structures under Hydrostatic Pressure lubricating pad, have very high bearing capacity and rigidity, be applicable to the precision static pressure turntable, at machine industry such as high precision lathe, high-precision grinder, heavy machine tool etc.; Power industry such as low water head tubular generator group; Metallurgical industry such as rolling mill; Testing machine aspect such as seismic test platform; Industries such as instrument aspect such as astronomical telescope have a wide range of applications.
Background technique
Along with China development energy, explore space, exploitation ocean demand to super large, superduty product, more and more higher to lathe super-heavy load, high-precision processing request.Heavy CNC vertical turning machine worktable diameter reaches Φ 2500～10000mm, and workpiece weighs tens tons, and Chong workpiece is placed on the worktable and processes like this, and the bearing load of worktable is increased.In addition, when the difficult processing cutting material,, must suppress flutter, improve the equipment rigidity for obtaining favorable surface quality; Simultaneously, the appearance of turnning and milling complex machining process requires process equipment must possess the function of high-speed milling and low speed revolution precision positioning.Adopt ball or roller type pivoting support turntable, be difficult to satisfy large-scale heavy duty, at a high speed, the requirement of accurate, high frequency sound.Because the liquid static-pressure support technology has outstanding advantages such as high kinematic accuracy, low friction power loss, big bearing capacity, strong resistance to shock and long life, that worktable employing hydrostatic support technology can effectively eliminate stress is concentrated, reduce friction and improve machining accuracy.And the static pressure lubricating pad is the key element in the static pressure turntable.At present, the hydrostatic support lubricating pad all is single cavity, single plane sealing oil edge structure, its liquid resistance is limited, cause under the certain situation of lubricating pad loaded area and fuel delivery, bearing capacity and insufficient rigidity are researched and developed the advanced subject that the active and static pressure lubricating pad with novel hydrostatic support technology and new structure has become the hydrostatic support technical development.
Summary of the invention
In order to overcome the defective of existing static pressure lubricating pad bearing capacity and insufficient rigidity when being applied to the large-scale heavy duty static pressure turntable, the invention provides a kind of new structure static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge, the liquid resistance of this novel static pressure lubricating pad is bigger, the hydraulic oil circulation is faster, therefore, improve the bearing capacity and the oil film rigidity of static pressure lubricating pad, reduced temperature rise, can satisfy the job requirement of large-scale heavy duty numerical control machine tool.
In order to solve the problems of the technologies described above, the invention provides a kind of static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge.This static pressure lubricating pad comprises the oiler that is positioned at the lubricating pad sidewall, the oil pocket and the sealing oil edge of lubricating pad end face, wherein the degree of depth of oil pocket reduces to some extent with respect to existing static pressure lubricating pad, be shallow oil pocket, and be provided with damping flow channel on the surface of oil pocket, the upper surface of sealing oil edge is provided with damping slot.Damping flow channel and damping slot are loop configuration, its sectional shape can be triangle, rectangle, semicircle, trapezoidal or other shapes, damping flow channel and damping slot can with continuously or forms such as interrupted, wall scroll or many be arranged in the surface of oil pocket and sealing oil edge respectively.
The invention has the beneficial effects as follows that can reduce the temperature rise and the friction horsepower of hydraulic oil in the static pressure lubricating pad when increasing static pressure lubricating pad bearing capacity and rigidity, the static pressure lubricating pad is simple in structure.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the static pressure lubricating pad sectional drawing with damping flow channel oil pocket and damping sealing oil edge
Fig. 2 is the static pressure lubricating pad top view with damping flow channel oil pocket and damping sealing oil edge
Fig. 3 is a cross section liquid speed vector diagram in the damping flow channel
Fig. 4 is a cross section liquid speed vector diagram in the damping slot
Among the figure: 1, oiler, 2, oil pocket, 3, damping flow channel, 4, sealing oil edge, 5, damping slot, 6, fixing threaded hole, 7, oil clearance I, 8, oil clearance II.
Embodiment
In the sectional drawing of the embodiment of static pressure lubricating pad of the present invention shown in Figure 1, when hydraulic oil enters oil pocket 2 from oiler 1, the liquid resistance that oil pocket 2 and sealing oil edge 4 produce stops hydraulic oil flow to go out lubricating pad.Simultaneously, high-speed hydraulic oil in oil pocket 2 and the sealing oil edge 4 produces very strong turbulent flow vortex (referring to Fig. 3 and Fig. 4) by viscous drive in damping flow channel 3 and damping slot 5, form the turbulent area in damping flow channel 3 and the damping slot 5, eddy current has extended in top oil clearance I 7 and the oil clearance II 8 always simultaneously, and the valid circulation area among oil clearance I 7 and the oil clearance II 8 is greatly reduced; Jet deflection in the oil clearance has also reduced the actual flow area in gap, and its comprehensive effect increases flow resistance, realizes Pressure gain, increases bearing capacity.Because the existence of jet deflection among oil clearance I 7 and the oil clearance II 8, make liquid resistance and oil clearance I 7 when oil clearance I 7 and oil clearance II 8 is big and oil clearance II 8 liquid resistance hour quite, promptly utilize the Turbulence Flow rule to increase the liquid resistance, thereby improve the rigidity of static pressure lubricating pad.Oil pocket 2 is shallow oil pocket, and the degree of depth is 1.5mm, makes the hydraulic oil circulation quicken, and has reduced the temperature rise of hydraulic oil in the static pressure lubricating pad.Owing to be provided with damping slot 5 on the sealing oil edge 4, the entity area of sealing oil edge 4 is reduced, promptly reduced the friction area of static pressure lubricating pad and moving guide rail, make the friction horsepower of static pressure lubricating pad reduce; Produce local hydrostatic effects simultaneously, thereby the bearing capacity of lubricating pad is further improved.Friction horsepower reduces to make that temperature rise reduces, and hydraulic oil viscosity changes little, has guaranteed the requirement of heavily loaded lathe to bearing capacity and rigidity.
The present invention is not limited to the structure of mode of execution illustrated in figures 1 and 2.Damping flow channel in the static pressure lubricating pad of the present invention and damping slot except triangle, rectangle, semicircle, trapezoidal, can also have other sectional shapes, and the arrangement mode of damping flow channel and damping slot also adopts other mode except that annular, as is arranged in parallel.As long as have in oil pocket and sealing oil edge surface arrangement to make hydraulic oil turbulization vortex, thereby the damping flow channel and the damping slot that play damping function all drop on protection scope of the present invention.
Claims (4)
1, a kind of static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge, comprise the oiler (1) that is positioned at the lubricating pad sidewall, the oil pocket (2) and the sealing oil edge (4) of lubricating pad end face, it is characterized in that described oil pocket (2) is shallow oil pocket, the surface of oil pocket (2) is provided with damping flow channel (3), and the upper surface of sealing oil edge (4) is provided with damping slot (5).
2, the static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge according to claim 1 is characterized in that described oil pocket (2) is shallow oil pocket, and the degree of depth is 0.8-2mm.
3, the static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge according to claim 1, it is characterized in that described damping flow channel (3) is loop configuration, its sectional shape can be triangle, rectangle, semicircle or trapezoidal, described damping flow channel (3) can for continuously or interrupted, wall scroll or many strips be arranged in the surface of described oil pocket (2).
4, the static pressure lubricating pad with damping flow channel oil pocket and damping sealing oil edge according to claim 1, it is characterized in that described damping slot (5) is loop configuration, its sectional shape can be triangle, rectangle, semicircle or trapezoidal, described damping slot (5) can for continuously or interrupted, wall scroll or many strips be arranged in the upper surface of described sealing oil edge (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100907179A CN101625014B (en) | 2009-08-03 | 2009-08-03 | Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100907179A CN101625014B (en) | 2009-08-03 | 2009-08-03 | Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101625014A true CN101625014A (en) | 2010-01-13 |
| CN101625014B CN101625014B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100907179A Expired - Fee Related CN101625014B (en) | 2009-08-03 | 2009-08-03 | Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge |
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| CN (1) | CN101625014B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447839A (en) * | 2013-08-22 | 2013-12-18 | 一重集团绍兴重型机床有限公司 | Closed hydrostatic workbench of heavy-duty vertical milling machine |
| CN103899646A (en) * | 2014-03-25 | 2014-07-02 | 西安理工大学 | Liquid static pressure guide rail provided with magnetorheological damper |
| CN105479191A (en) * | 2015-12-10 | 2016-04-13 | 哈尔滨理工大学 | Triangular cavity static pressure support workbench |
| CN106439005A (en) * | 2016-12-07 | 2017-02-22 | 北京工业大学 | Circular hydrostatic turntable oil pad with oil sealing edge with circular arc grooves |
| CN106545575A (en) * | 2016-12-07 | 2017-03-29 | 北京工业大学 | A kind of heavy wool pore size distribution formula static pressure circle lubricating pad |
| CN109333077A (en) * | 2018-10-10 | 2019-02-15 | 西安理工大学 | The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203674U (en) * | 1985-09-05 | 1987-04-22 | 北京航空学院 | Dynamic and static pressure mixing bearing with hole ring surface throttle, shallow cavity and adjustable groove |
| CN86105066B (en) * | 1986-08-26 | 1988-07-27 | 机械工业部北京电机研究所 | Static-pressure dearing or static-pressure fluid shim device |
| US5433528A (en) * | 1994-02-28 | 1995-07-18 | Rockwell International Corporation | Two pad axially grooved hydrostatic bearing |
| CN201531527U (en) * | 2009-08-03 | 2010-07-21 | 北京工业大学 | Static pressure oil pad with damping flow passage oil cavity and damping type oil sealing edge |
-
2009
- 2009-08-03 CN CN2009100907179A patent/CN101625014B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447839A (en) * | 2013-08-22 | 2013-12-18 | 一重集团绍兴重型机床有限公司 | Closed hydrostatic workbench of heavy-duty vertical milling machine |
| CN103899646A (en) * | 2014-03-25 | 2014-07-02 | 西安理工大学 | Liquid static pressure guide rail provided with magnetorheological damper |
| CN103899646B (en) * | 2014-03-25 | 2016-04-20 | 西安理工大学 | With the hydrostatic slideway of magnetic rheological liquid damper |
| CN105479191A (en) * | 2015-12-10 | 2016-04-13 | 哈尔滨理工大学 | Triangular cavity static pressure support workbench |
| CN106439005A (en) * | 2016-12-07 | 2017-02-22 | 北京工业大学 | Circular hydrostatic turntable oil pad with oil sealing edge with circular arc grooves |
| CN106545575A (en) * | 2016-12-07 | 2017-03-29 | 北京工业大学 | A kind of heavy wool pore size distribution formula static pressure circle lubricating pad |
| CN106439005B (en) * | 2016-12-07 | 2018-07-31 | 北京工业大学 | A kind of band arc groove sealing oil edge static pressure turntable circle lubricating pad |
| CN109333077A (en) * | 2018-10-10 | 2019-02-15 | 西安理工大学 | The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
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| Publication number | Publication date |
|---|---|
| CN101625014B (en) | 2011-07-27 |
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Granted publication date: 20110727 Termination date: 20120803 |