CN102954111B - Surface structure of radial sliding bearing with lubricating oil points in phyllotaxy arrangement - Google Patents
Surface structure of radial sliding bearing with lubricating oil points in phyllotaxy arrangement Download PDFInfo
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- CN102954111B CN102954111B CN201210193631.0A CN201210193631A CN102954111B CN 102954111 B CN102954111 B CN 102954111B CN 201210193631 A CN201210193631 A CN 201210193631A CN 102954111 B CN102954111 B CN 102954111B
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Abstract
The invention discloses a surface structure of a radial bearing with lubricating oil points in phyllotaxy arrangement. The surface structure is characterized in that the distribution of the lubricating oil points on the working surface of the bearing is in conformity with a Van Iterson model of a phyllotaxy theory in biology, namely Phi=n*alpha, R0=const, H=h*n, wherein n represents the ordinal number of biological grains of scales, represents the ordinal number of the lubricating oil points in the lubricating oil point design of the bearing, and is computed from a bottom face of a cylinder of the radial bearing; Phi, R0 and H represent cylindrical coordinates of the nth lubricating oil point; alpha represents an included angle of two adjacent lubricating oil points on a radial projection plane and is equal to 137.508 degrees; and h represents a vertical distance of two adjacent lubricating oil points in a cylindrical-face principal axis direction and is controlled within 0.1-1. The surface structure disclosed by the invention has the advantages of higher lubricating effect, capability of reducing friction resistance, sufficiency in lubrication and capability of prolonging the service life of the bearing.
Description
Technical field
The invention belongs to radial sliding bearing technical field, is a kind of novel lubricating oil drop surface arrangement sliding bearing.The feature of this bearing be that the phyllotaxy in biology is theoretical and organism surface feature application in sliding bearing field, realize the Engineering Design on bearing working surface, the Van Iterson model making radial sliding bearing working surface pattern meet phyllotaxy to arrange.In the process that back shaft rotates, higher lubrication effect can be obtained, reduce surface friction drag, lubrication is abundant, lower frictional heat damage, the working life of improving radial sliding bearing, rotational efficienty, radial sliding bearing development and application are had great significance.
Background technique
Sliding bearing supports pivotal important zero (portion) part.In heavy duty, highi degree of accuracy and aggressive medium and in the little occasion of radial structure, sliding bearing occupies an important position.Along with the raising of required precision in machining, and the raising of the revolving support precision of high-precision minitype lathe, propose new challenge to the design of radial sliding bearing.In this case, radial sliding bearing is widely used and develops.According to the ability to work criterion of hydrodynamic pressure bearing, the factor affecting radial sliding bearing work is a lot, such as minimum oil film thickness, bearing temperature rise, being uniformly distributed and hydrldynamic pressure lubrication condition etc. of Lubricants.In numerous influence factors, the design of the lubrication oil drop on bearing working surface has great significance to the rotating accuracy of axle, revolution efficiency and durability.The lubrication oil drop of current end face sliding bearing working surface adopts strip ditch radially distributed, the distributed and formula that is dislocatedly distributed of the decile radial alignment of circular concave point.These arrangement modes lack certain rationale in design, often cause lubricant medium skewness, and hydrldynamic pressure lubrication performance is reduced, and frictional force increases, and even close because lubricating the uneven concurrent rubber of high temperature that produces, to such an extent as to working surface damage etc.Therefore, in order to solve appeal problem, how to realize the key problem in technology place that sliding bearing working surface Engineering Design is sliding bearing field.
In recent years, the friction drag reduction theoretical research of non-smooth surface shows, the geomorphic feature of sliding friction working surface and structural type are improving greasy property and are reducing to play crucial effect in friction, but carrying out in radial bearing working surface Engineering Design, there is the rationalization select permeability of frictional surface features design parameter, and also lack the theoretical foundation of design at present.If improper to the radial sliding bearing working surface oil drop relevant Selecting parameter that distributes, will cause that turning course is unstable, surface friction drag is large and lubricate insufficient.
Therefore, the present invention is based on phyllotaxy in bioscience theoretical Van Iterson model, namely biological phyllotaxy theory shows, the leaf of plant, petal, the seed of fruit and the geometry arrangement of fish scale meet the Golden-Section Law.Radial sliding bearing working surface lubrication oil drop is gone out according to this Theoretical Design.The radial sliding bearing with phyllotaxy arrangement lubrication oil drop has possessed problem in solution lubrication recited above.Realize the even lubrication of radial sliding bearing.
Summary of the invention
Object of the present invention, is to provide the surface structure of the radial sliding bearing of a kind of phyllotaxy arrangement lubrication oil drop, effectively can improves the greasy property of bearing.
The technological scheme adopted is:
A surface structure for the radial bearing of phyllotaxy arrangement lubrication oil drop, is characterized in that the lubrication oil drop arrangement on bearing working surface meets the Van Iterson model of biological phyllotaxy theory, i.e. φ=nn* α, R
0=const, H=h*n; Wherein: n is biological seed or scale ordinal number, in the design of bearing lubrication oil drop, n is oil drop ordinal number, calculates from radial bearing bottom cylindrical face; φ, R
0, H is the cylindrical coordinates of the n-th lubrication oil drop; α is the angles of adjacent two lubrication oil drops between radially projecting face, α=137.508 °; H is the perpendicular distances of adjacent two lubrication oil drops on cylinder main axis direction, and h controls in 0.1 ~ 1 scope.
Above-mentioned lubrication oil drop surface structure meets organism surface characteristics, lubrication oil drop can be half ball crown type or fish scale type, fish scale type lubrication oil drop surface is inclined to wedge shape mutually with working surface, play fluid lubrication effect, the true dip direction of each fish scale type lubrication oil drop all meets the necessary and sufficient condition of hydrodynamic lubrication.
The surface structure of the end face bearing of phyllotaxy arrangement lubrication oil drop, it is characterized in that the diameter d of 1 ball crown type lubricant oil point controls within the scope of 2mm ~ 4mm, the degree of depth δ of lubrication oil drop is within the scope of 0.03d-0.08d.The length L of fish scale type lubrication oil drop controls within the scope of 2mm ~ 4mm, and the degree of depth ω of lubrication oil drop is within the scope of 0.03L ~ 0.08L.
The surface structure of the radial bearing of phyllotaxy arrangement lubrication oil drop, is characterized in that the area ratio (the lubrication area of oil drop and the ratio of bearing working surface area) of lubricating oil drop controls in 10% ~ 20% scope.
The principle that the present invention is based on
The present invention's part is the radial sliding bearing that oil drop is lubricated in the phyllotaxy arrangement gone out based on biological phyllotaxy Theoretical Design.
Organism surface characteristics antifriction resistance principle shows, the body surface of the animals such as fish, pangolin, dung beetle is covered with scale, concave point or salient point, and according to the arrangement of certain rule, reduces the resistance in motion with this.Therefore, there is the lubricant oil point of fluid lubrication principle according to the arrangement of phyllotaxy theory, finally can reach antifriction resistance effect, improving greasy property and working life when radial sliding bearing working surface Engineering Design.
Biological phyllotaxy theory shows, the seed of the leaf of plant, petal, fruit and the geometry arrangement of fish scale meet the Golden-Section Law.Wherein Van Iterson model discloses the regularity of distribution of space seed.The intension of Van Iterson model is, in cylindrical-coordinate system, the angle of swing between adjacent ordinal number seed or seed race is θ=137.508 °, and the spacing of the cylinder major axes orientation between adjacent seed or seed race is h.Van Iterson model is biological seed, petal, fish scale Structural assignments rule model, this structure to be arranged in implementation space geometrically complementary and meet golden section ratio, it has surface to thermal-radiating maximum absorbance capacity, and the effect of the phyllotaxy formed first spiral grooves convection cell happens occasionally and uniform effect.Therefore, when the working surface Engineering Design of radial bearing, each lubrication oil drop can be regarded as a seed point, carry out according to Van Iterson model the lubrication oil drop arrangement designing radial bearing working surface, form the radial sliding bearing of phyllotaxy arrangement lubrication oil drop.Phyllotaxy arrangement simultaneously owing to lubricating oil drop can be realized by the parameter changed in Van Iterson model, thus obtain the oil drop arrangement of optimized radial bearing working surface, also the greasy property of the radial sliding bearing of phyllotaxy arrangement lubrication oil drop is made to be optimized, finally reach and improve frictional behaviour, improve the effect in radial bearing life-span.
Advantage of the present invention:
Lubrication oil drop arrangement due to radial sliding bearing working surface of the present invention meets the Van Iterson model of the phyllotaxy theory in bioscience; namely under the coordinate of cylndrical surface; n-th lubrication oil drop and (n+1)th rotation angle lubricated between oil drop are α=137.508 °; it be h, n along the spacing of cylinder main axis between oil drop is biological seed or scale ordinal number that n-th lubrication oil drop and (n+1)th lubricate.Lubrication oil drop can be half ball crown type or fish scale type, the rate control of lubrication oil drop area occupied and bearing working surface area is 10% ~ 20%, the sphere diameter d of 1 ball crown type lubricant oil point is within the scope of 2mm ~ 4mm, lubrication oil drop maximum depth δ is within the scope of 0.03d ~ 0.08d, fish scale type lubrication oil drop shape meets placoid scale scale parameter, the length L of lubrication oil drop controls within the scope of 2mm ~ 4mm, the degree of depth ω of lubrication oil drop is within the scope of 0.03L ~ 0.08L, wedge shape is inclined to mutually with working surface, play fluid lubrication effect, working surface surface friction drag is reduced.The phyllotaxy arrangement of lubrication oil drop meets phyllotaxy theoretical Van Iterson model, realize the landform shape controllability of radial sliding bearing working surface, thus control the distribution of bearing supporting region Lubricants, make friction temperature, surface friction drag reaches minimum, reduce the surface friction drag of working surface and improve lubricating condition etc., finally reaching the greasy property improving bearing.
Accompanying drawing explanation
Fig. 1 is a kind of organism body surface scaly leaf sequence structure layout viewing.
In Fig. 11 is scale matrix, and 2 is clockwise scale archistreptes, and 3 is counterclockwise scale archistreptes.
Fig. 2 is a kind of phyllotaxy Structural assignments figure of biological fruit and seed seed.
In Fig. 24 is seed kernels, and 5 is clockwise seed blade row helixes, and 6 is counterclockwise seed blade row helixes.
Fig. 3 is phyllotaxy theoretical Van Iterson mathematical model.
In Fig. 3, label 7 is seed growth tracks, and label 8 is seed projections under cylindrical coordinate system.
Fig. 4 is the unfolded drawing under phyllotaxy theoretical Van Iterson mathematical model cylindrical coordinate system.In Fig. 4, label 9,10 and 11 is three nodes.
Fig. 5 is the aspect graph of fish scale shape phyllotaxy arrangement lubrication oil drop radial sliding bearing.
In Fig. 5, label 12 is radial sliding bearings, and 13 is fish scale type pit schematic diagram.
Fig. 6 is the partial enlarged drawing of fish scale type pit in Fig. 5.
Fig. 7 is the A-A view of Fig. 6.
Fig. 8 is the aspect graph of half ball crown type phyllotaxy arrangement lubrication oil drop radial sliding bearing.
In Fig. 8 14 is radial sliding bearings, and 15 is half ball crown type oil drop figure.
Fig. 9 is the enlarged view of half ball crown type oil drop 15.
Figure 10 is the B-B view of Fig. 9.
Figure 11 is distribution ratio is the impact that h=0.05 distributes on seed block.
In Figure 11 16 is the positions at lubrication oil drop place, and 17 is radial sliding bearings.
Figure 12 is distribution ratio is the impact that h=0.1 distributes on seed block.
Figure 13 is distribution ratio is the impact that h=0.2 distributes on seed block.
Figure 14 is distribution ratio is the impact that h=0.3 distributes on seed block.
Figure 15 is distribution ratio is the impact that h=0.5 distributes on seed block.
Embodiment
The surface structure of radial sliding bearing for phyllotaxy arrangement lubrication oil drop, be based on according to the phyllotaxy Structural assignments law utilization CAD software of the fish scale scale in Fig. 1 and Fig. 2 and biological fruit and seed seed based on Van Iterson model (φ=n* α, R
0=const, H=h*n, wherein n is seed ordinal number, and h is distribution ratio) design the lubricant oil dot pattern of arranging by phyllotaxy theory.As shown in Figure 3,7 is helixes of seed growth track, and 8 is projection planes of helix place cylinder.9,10,11 is n-th in Van Iterson model, a n+1 and n+2 seed point respectively, the angle of adjacent two seeds between projection plane is 137.508 °, be h(h=constant at z-axis projection pitch between adjacent two seeds), the span of h is 0.1 ~ 1.By the unfolded drawing of CAD Software for Design VanIterson model, as shown in Figure 3, the girth of X-axis numeric representation cylindrical surface projecting circle, Z axis numerical value is the total spacing H=h*n of the n-th seed point apart from initial point.
The lubrication oil drop base structure of design phyllotaxy arrangement.Be illustrated in figure 4 the form half sectional view of fish scale type phyllotaxy arrangement lubrication oil drop radial sliding bearing, the physical dimension of fish scale type oil drop matrix is as shown in Fig. 4 13, oil drop length L value controls within the scope of 2mm ~ 4mm, and the value of degree of depth ω is 0.03L ~ 0.08L, R=L/2.The aspect graph of each lubrication oil drop as a seed point design fish scale type phyllotaxy arrangement lubrication oil drop radial sliding bearing.Wherein putting of oil drop of each fish scale type lubrication meets hydrodynamic effect along bearing rotary direction.Be illustrated in figure 5 the aspect graph of half ball crown type phyllotaxy arrangement lubrication oil drop radial sliding bearing, the physical dimension of half ball crown type oil drop matrix is as shown in Fig. 5 15, and lubricant oil point radius d controls within the scope of 2mm ~ 4mm, and the value of degree of depth δ is 0.03d ~ 0.08d.Each lubrication oil drop is designed the aspect graph of half ball crown type phyllotaxy arrangement lubrication oil drop radial sliding bearing as a seed point.
By changing the distribution ratio h in Van Iterson model, obtain the seed arrangement form under different distributions coefficient.Controlled in 10% ~ 20% scope by the area ratio (the area sum of all oil drops and the ratio of bearing working surface area) of large young pathbreaker's oil drop of control h value.Affected the density degree of seed arrangement by the known distribution ratio h of the distribution situation of seed under different distributions coefficient h in Fig. 6, the arrangement of h value larger seed is more sparse.The span of h is: 0.1 ~ 1.
Claims (3)
1. a surface structure for the radial bearing of phyllotaxy arrangement lubrication oil drop, is characterized in that the lubrication oil drop arrangement on bearing working surface meets the Van Iterson model of biological phyllotaxy theory, namely
; Wherein:
nbiological seed or scale ordinal number, in the design of bearing lubrication oil drop,
nbe oil drop ordinal number, calculate from radial bearing bottom cylindrical face;
φ, R 0 , H?
nthe cylindrical coordinates of individual lubrication oil drop;
αthe angles of adjacent two lubrication oil drops between radially projecting face, α=137.508 °;
hthe perpendicular distances of adjacent two lubrication oil drops on cylinder main axis direction,
hcontrol in 0.1 ~ 1 scope.
2. the surface structure of the radial bearing of a kind of phyllotaxy arrangement lubrication oil drop according to claim 1, it is characterized in that above-mentioned lubricating point surface structure meets organism surface characteristics, lubrication oil drop can be half ball crown type or fish scale type, fish scale type lubrication oil drop surface is inclined to wedge shape mutually with working surface, play fluid lubrication effect, the true dip direction of each fish scale type lubrication oil drop all meets the necessary and sufficient condition of hydrodynamic lubrication.
3. the surface structure of the radial bearing of a kind of phyllotaxy arrangement lubrication oil drop according to claim 1, is characterized in that the diameter of 1 ball crown type lubricant oil point in the surface structure of the end face bearing of phyllotaxy arrangement lubrication oil drop
dcontrol within the scope of 2mm ~ 4mm, the degree of depth of lubrication oil drop
δwithin the scope of 0.03d-0.08d, the length of fish scale type lubrication oil drop
lcontrol within the scope of 2mm ~ 4mm, the degree of depth of lubrication oil drop
ω0.03
l~ 0.08
lin scope;
The surface structure of the radial bearing of phyllotaxy arrangement lubrication oil drop, the area of lubrication oil drop and the rate control of bearing working surface area are in 10% ~ 20% scope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210193631.0A CN102954111B (en) | 2012-06-13 | 2012-06-13 | Surface structure of radial sliding bearing with lubricating oil points in phyllotaxy arrangement |
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| CN201210193631.0A CN102954111B (en) | 2012-06-13 | 2012-06-13 | Surface structure of radial sliding bearing with lubricating oil points in phyllotaxy arrangement |
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| CN102954111B true CN102954111B (en) | 2015-04-22 |
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| CN105070696B (en) * | 2015-08-05 | 2017-11-14 | 沈阳理工大学 | A kind of minitype radiator of column phyllotaxy arrangement deployed configuration |
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| CN105478045B (en) * | 2015-08-05 | 2018-01-02 | 沈阳理工大学 | A kind of micro-mixer of column phyllotaxy arrangement deployed configuration |
| CN105097731B (en) * | 2015-08-05 | 2018-01-02 | 沈阳理工大学 | A kind of minitype radiator of column phyllotaxy arrangement |
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| US6225720B1 (en) * | 1999-11-16 | 2001-05-01 | Wood Group Esp, Inc. | Self-lubricating bearing |
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| CN201696495U (en) * | 2010-06-24 | 2011-01-05 | 励盼攀 | Self-lubricating bearing |
| CN102198641A (en) * | 2011-05-12 | 2011-09-28 | 沈阳理工大学 | Super-hard abrasive grinding wheel with head face having abrasives in phyllotaxis arrangement and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09222123A (en) * | 1996-02-16 | 1997-08-26 | Isel Kk | Lubricating device at linear moving bearing |
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2012
- 2012-06-13 CN CN201210193631.0A patent/CN102954111B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3574757B2 (en) * | 1999-05-24 | 2004-10-06 | 株式会社コーメー | Oil-free bearing |
| US6225720B1 (en) * | 1999-11-16 | 2001-05-01 | Wood Group Esp, Inc. | Self-lubricating bearing |
| CN101413540A (en) * | 2007-10-15 | 2009-04-22 | 中国科学院工程热物理研究所 | Kinetic pressure air-float bearing of inner flow passage self-lubricating structure |
| CN201696495U (en) * | 2010-06-24 | 2011-01-05 | 励盼攀 | Self-lubricating bearing |
| CN102198641A (en) * | 2011-05-12 | 2011-09-28 | 沈阳理工大学 | Super-hard abrasive grinding wheel with head face having abrasives in phyllotaxis arrangement and production method thereof |
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