CN103671493A - Rolling bearing with texture sequences on surfaces of roller paths and ball - Google Patents
Rolling bearing with texture sequences on surfaces of roller paths and ball Download PDFInfo
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- CN103671493A CN103671493A CN201310663938.7A CN201310663938A CN103671493A CN 103671493 A CN103671493 A CN 103671493A CN 201310663938 A CN201310663938 A CN 201310663938A CN 103671493 A CN103671493 A CN 103671493A
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- raceway
- bearing
- ball
- texture sequence
- ball surface
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Abstract
The invention discloses a rolling bearing with texture sequences on surfaces of roller paths and a ball. The rolling bearing is composed of a bearing outer ring, a bearing inner ring, a retainer and the ball and is characterized in that the surface of the inner roller path of the bearing outer ring or the surface of the outer roller path of the bearing inner ring or the surface of the ball or any two or three surfaces are respectively provided with a texture sequence. The texture sequence on the surface of the inner roller path of the bearing outer ring is of a group of stripped grooves, wherein the included angle of linear speeds on contact points of the stripped grooves and the inner roller path is regularly changed in the peripheral direction; the texture sequence on the surface of the outer roller path of the bearing inner ring is of a group of stripped grooves, wherein the included angle of linear speeds on contact points of the stripped grooves and the outer roller path is regularly changed in the peripheral direction; and the texture sequence on the surface of the ball is a spherical spiral groove. The texture sequences can be used for ensuring that all points on the surface of the ball participate in contact, but the condition that points in a ring region on the surface of the ball participate in contact is avoided. Therefore, uniform contact is realized on the surface of the ball, the circulation times of stress borne by any fixed point on the surface of the ball are reduced, and the contact fatigue life of the rolling bearing is prolonged.
Description
Technical field
The present invention relates to a kind of rolling bearing, especially relate to the rolling bearing that a kind of raceway and ball surface have texture sequence.
Background technique
In rolling bearing, the relative movement of rolling element and lasso raceway and the intrusion of dirt dust, be that rolling element and raceway face produce wearing and tearing.Along with the increase of wear extent, bearing clearance, noise, vibration increase thereupon, and bearing rotation precision reduces, and finally makes bearing lose normal service behaviour.
Studies have shown that in a large number in recent years, not more smooth its tribological property of surface is just better, processes certain texture sequence can improve its tribological property at surface of friction pair.Surface Texture is exactly the nick hole with certain size and morphological characteristics or micro groove and the micro-bulge processing on surface of friction pair.
Based on above-mentioned background, if energy appropriate design goes out the Surface Texture sequence of lasso raceway and rolling element, will inevitably reduce the wear extent of bearing race and ball, improve the contact fatigue life of rolling bearing.
Summary of the invention
The object of the present invention is to provide a kind of raceway and ball surface to have the rolling bearing of texture sequence, outside the interior raceway of bearing outer ring or bearing inner race, the surface of raceway or ball or its any two surfaces or three surfaces are provided with texture sequence.
The technical solution used in the present invention is:
The present invention includes bearing outer ring, bearing inner race, retainer and ball; It is characterized in that: raceway face or ball surface outside the interior raceway face of bearing outer ring or bearing inner race, or its any two surfaces, or three surfaces are provided with texture sequence.
The interior raceway face texture sequence of described bearing outer ring is one group of strip-shaped grooves changing by rule in a circumferential direction with the angle of interior raceway point of contact linear velocity.
The outer raceway face texture sequence of described bearing inner race be one group with the angle of outer raceway point of contact linear velocity in a circumferential direction by the strip-shaped grooves of rule variation.
Described ball Surface Texture sequence is a spherical helix groove.
Being changed to by rule of the outer raceway face texture sequence of the interior raceway face of described bearing outer ring or bearing inner race: set up xoy system of coordinates in the radial plane of rolling bearing, described system of coordinates be take rotating center as true origin; In the first quartile of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 45 ° from 90 °; In the second quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 90 ° from 45 °; In the third quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 135 ° from 90 °; In the fourth quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 90 ° from 135 °.
Described spherical helix is by following establishing equation:
ρ＝r （1）
θ＝180t （2）
Spherical helix is based upon take in the spherical coordinate system that the centre of sphere of ball is initial point; In formula (1), (3), r is the radius of spherical helix, and t is 0～1 variable, and n is the number of turns of helix, (ρ, θ,
) be the coordinate of putting on spherical helix.
The gross area of the outer raceway face texture sequence of the interior raceway face of described bearing outer ring or bearing inner race be Internal and external cycle raceway face long-pending 7.5%～30%; The gross area of ball Surface Texture sequence is 7.5%～30% of ball surface area; The depth-to-width ratio of the outer raceway of the interior raceway of bearing outer ring or bearing inner race or ball Surface Texture sequence strip-shaped grooves is 1: 4～5.
The beneficial effect that the present invention has is:
1, without the rolling bearing of texture sequence, compare with ball surface with raceway, the groove of raceway and ball Surface Texture sequence can hold abrasive particle, has improved the wear resistance of friction pair; In the situation that having oiling agent to exist, be conducive to form hydrldynamic pressure lubrication, improved raceway and ball surface bearing capacity, play the effect of antifriction antiwear.
2, having one group of perseverance with lasso raceway face compares perpendicular to the rolling bearing of the even texture sequence of lasso raceway point of contact linear velocity direction, this rolling bearing that the angle of described lasso raceway face texture sequence and lasso raceway point of contact linear velocity direction changes according to certain rules on circumference, make surperficial each point of ball participate in contact, and be not only the some participation contact in the endless belt in surface.During rolling bearing work, ball is subject to alternate load effect in raceway.The point that ball surface participates in contact is more, and in certain revolution of bearing operation, the number of times that certain About Any Fixed Point of ball surface meets with stresses reduces so, and wear extent reduces.Therefore, the antifriction-bearing raceway of design and ball Surface Texture sequence can make the wear extent of ball surface each point even, have improved the contact fatigue life of rolling bearing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of inside and outside raceway face texture sequence.
Fig. 2 is the schematic diagram of ball Surface Texture sequence.
Fig. 3 is the change rule schematic diagram of structure of the present invention and lasso raceway face texture sequence and point of contact linear velocity angular separation.
Fig. 4 is the schematic diagram that ball contacts with lasso raceway.
Fig. 5 is the schematic diagram of revolutions campaign.
In figure: 1, bearing inner race, 2, ball, 3, retainer, 4, bearing outer ring.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, Figure 3, the present invention includes bearing outer ring 4, bearing inner race 1, retainer 3 and ball 2.On interior raceway face or the outer raceway face of bearing inner race 1 or ball 2 surfaces of bearing outer ring 4, or its any two surfaces, or three surfaces are provided with texture sequence.
The interior raceway face texture sequence of described bearing outer ring is one group of strip-shaped grooves changing by rule in a circumferential direction with the angle of interior raceway point of contact linear velocity.
The outer raceway face texture sequence of described bearing inner race be one group with the angle of outer raceway point of contact linear velocity in a circumferential direction by the strip-shaped grooves of rule variation.
As shown in Figure 2, described ball Surface Texture sequence is a spherical helix groove.
As shown in Figure 1, be the schematic diagram of inside and outside raceway face texture sequence.Bearing inner race or outer ring are along the circumferential direction launched and be laid in plane, and inside and outside raceway face texture sequence is the strip-shaped grooves that the angle of a group of itself and inside and outside raceway point of contact linear velocity changes by diagram rule in a circumferential direction.As shown in Figure 3, being changed to by rule of the outer raceway face texture sequence of the interior raceway of described bearing outer ring or bearing inner race: set up xoy system of coordinates in the radial plane of rolling bearing, described system of coordinates be take rotating center as true origin; In the first quartile of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 45 ° from 90 °; In the second quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 90 ° from 45 °; In the third quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 135 ° from 90 °; In the fourth quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 90 ° from 135 °.
Described spherical helix is by following establishing equation:
ρ＝r （1）
θ＝180t （2）
Spherical helix is based upon take in the spherical coordinate system that the centre of sphere of ball is initial point; In formula (1), (3), r is the radius of spherical helix, and t is 0～1 variable, and n is the number of turns of helix, (ρ, θ,
) be the coordinate of putting on spherical helix.
The gross area of the outer raceway face texture sequence of the interior raceway face of described bearing outer ring or bearing inner race be Internal and external cycle raceway face long-pending 7.5%～30%; The gross area of ball Surface Texture sequence is 7.5%～30% of ball surface area; The depth-to-width ratio of the outer raceway of the interior raceway of bearing outer ring or bearing inner race or ball Surface Texture sequence strip-shaped grooves is 1: 4～5.
During no-load, rolling element is that point contacts with the contact type of interior raceway or outer raceway.As shown in Figure 4, at radial load F
runder effect, some contact will be extended to a surface of contact, and surface of contact is projected as an ellipse in the plane vertical with Contact normal.Suppose that lasso raceway face has one group of perseverance perpendicular to the even texture sequence of lasso raceway point of contact linear velocity direction.When lasso is during with certain rotational speed, lasso has an active force to ball so.Ball is under the effect of power, and not only the axis of rotation around bearing revolves round the sun, and around himself central axis rotation.But because this active force is vertical with Surface Texture sequence all the time, again Surface Texture sequence be one group of perseverance perpendicular to the uniform outer surface texture sequence of point of contact linear velocity direction, the direction of active force is identical with point of contact linear velocity direction all the time.So during rolling bearing work, along with the increase of wear extent, formed gradually a wearing and tearing endless belt on ball surface, this wearing and tearing endless belt is to rotate a circle formed around ball center by above-mentioned oval surface of contact.Therefore, only have the point in this endless belt to participate in contact, and point outside the endless belt of ball surface has neither part nor lot in contact, ball surface abrasion is inhomogeneous.
Surface Texture sequence of the present invention has effectively solved the problem of ball surface abrasion inequality.As shown in Figure 1, lasso rotating speed is n, and when ball moves to lasso point, the angle between the strip-shaped grooves of raceway face and point of contact linear velocity is θ, and at point of contact P place, lasso is F to the active force of rolling element
n, by this directed force F
nbe decomposed into the power F that is parallel to point of contact linear velocity direction
twith the directed force F perpendicular to linear velocity direction
a.As shown in Figure 5, take ball center as initial point, directed force F
tdirection be x axle postive direction, directed force F
adirection be y axle postive direction, set up rectangular coordinate system in space.At power F
teffect under, ball has a spin velocity ω around y axle
y, simultaneously at power F
aeffect under formed the spin velocity ω around x axle
x.Along with texture sequence and point of contact linear velocity angular separation θ constantly change in a circumferential direction, directed force F
ndirection change thereupon, so two component F
a, F
tsize also changes, and ball is around the spin velocity ω of x axle
xwith the spin velocity ω around y axle
yalso constantly change thereupon.So ball surface no longer occupy in an endless belt with the point of contact of raceway, but after certain stress-number of cycles, each point of ball surface participates in contact, and, for certain About Any Fixed Point of ball surface, stress-number of cycles reduces, wear extent reduces, and has therefore improved the contact fatigue life of rolling bearing.
As shown in Figure 2, at the groove of a spherical helix of ball surface Machining, can make equally each point of ball surface participate in contact, for certain About Any Fixed Point of ball surface, stress-number of cycles reduces, and wear extent reduces, and has therefore improved the contact fatigue life of rolling bearing.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (7)
1. raceway and ball surface have a rolling bearing for texture sequence, comprise bearing outer ring, bearing inner race, retainer and ball; It is characterized in that: raceway face or ball surface outside the interior raceway face of bearing outer ring or bearing inner race, or its any two surfaces, or three surfaces are provided with texture sequence.
2. a kind of raceway according to claim 1 and ball surface have the rolling bearing of texture sequence, it is characterized in that: the interior raceway face texture sequence of described bearing outer ring is one group of strip-shaped grooves changing by rule in a circumferential direction with the angle of interior raceway point of contact linear velocity.
3. a kind of raceway according to claim 1 and ball surface have the rolling bearing of texture sequence, it is characterized in that: the outer raceway face texture sequence of described bearing inner race be one group with the angle of outer raceway point of contact linear velocity in a circumferential direction by the strip-shaped grooves of rule variation.
4. a kind of raceway according to claim 1 and ball surface have the rolling bearing of texture sequence, it is characterized in that: described ball Surface Texture sequence is a spherical helix groove.
5. according to a kind of raceway described in claim 2 or 3 and ball surface, there is the rolling bearing of texture sequence, it is characterized in that: the outer raceway face texture sequence of the interior raceway face of described bearing outer ring or bearing inner race is changed to by rule: in the radial plane of rolling bearing, set up xoy system of coordinates, described system of coordinates be take rotating center as true origin; In the first quartile of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 45 ° from 90 °; In the second quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 90 ° from 45 °; In the third quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is increased to 135 ° from 90 °; In the fourth quadrant of xoy system of coordinates, the angle of the strip-shaped grooves of raceway face and interior raceway or outer raceway point of contact linear velocity direction is reduced to 90 ° from 135 °.
6. a kind of raceway according to claim 4 and ball surface have the rolling bearing of texture sequence, it is characterized in that:
Described spherical helix is by following establishing equation:
ρ＝r （1）
θ＝180t （2）
Spherical helix is based upon take in the spherical coordinate system that the centre of sphere of ball is initial point; In formula (1), (3), r is the radius of spherical helix, and t is 0～1 variable, and n is the number of turns of helix, (ρ, θ,
) be the coordinate of putting on spherical helix.
7. a kind of raceway according to claim 1 and ball surface have the rolling bearing of texture sequence, it is characterized in that: the gross area of the outer raceway face texture sequence of the interior raceway face of described bearing outer ring or bearing inner race be Internal and external cycle raceway face long-pending 7.5%～30%; The gross area of ball Surface Texture sequence is 7.5%～30% of ball surface area; The depth-to-width ratio of the outer raceway of the interior raceway of bearing outer ring or bearing inner race or ball Surface Texture sequence strip-shaped grooves is 1: 4～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663938.7A CN103671493B (en) | 2013-12-09 | 2013-12-09 | Raceway and ball surface have the rolling bearing of texture sequence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663938.7A CN103671493B (en) | 2013-12-09 | 2013-12-09 | Raceway and ball surface have the rolling bearing of texture sequence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671493A true CN103671493A (en) | 2014-03-26 |
| CN103671493B CN103671493B (en) | 2016-05-11 |
Family
ID=50309998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310663938.7A Expired - Fee Related CN103671493B (en) | 2013-12-09 | 2013-12-09 | Raceway and ball surface have the rolling bearing of texture sequence |
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| Country | Link |
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| CN (1) | CN103671493B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455005A (en) * | 2014-11-27 | 2015-03-25 | 镇江建华轴承有限公司 | Long-life rolling bearing with specific texture sequence on raceway surface |
| CN109488694A (en) * | 2018-12-26 | 2019-03-19 | 西安交通大学 | A kind of lubricating method of the rolling bearing of Surface Texture auxiliary |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4916751A (en) * | 1988-02-29 | 1990-04-10 | Nippon Seiko Kabushiki Kaisha | Rolling bearing |
| CN2210969Y (en) * | 1994-12-22 | 1995-10-25 | 欧锦松 | Oil-stagnant film complex bearing |
| US5498086A (en) * | 1995-01-31 | 1996-03-12 | Ou; Chin-Sung | Oil film-deposit bearing |
| CN1871443A (en) * | 2003-09-18 | 2006-11-29 | Skf股份公司 | Bearing with reduced reflow |
| JP2009108963A (en) * | 2007-10-31 | 2009-05-21 | Ntn Corp | Rolling member |
| CN203627524U (en) * | 2013-12-09 | 2014-06-04 | 浙江大学 | Rolling bearing with texture sequences on roller path and spherical surface |
-
2013
- 2013-12-09 CN CN201310663938.7A patent/CN103671493B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4916751A (en) * | 1988-02-29 | 1990-04-10 | Nippon Seiko Kabushiki Kaisha | Rolling bearing |
| CN2210969Y (en) * | 1994-12-22 | 1995-10-25 | 欧锦松 | Oil-stagnant film complex bearing |
| US5498086A (en) * | 1995-01-31 | 1996-03-12 | Ou; Chin-Sung | Oil film-deposit bearing |
| CN1871443A (en) * | 2003-09-18 | 2006-11-29 | Skf股份公司 | Bearing with reduced reflow |
| JP2009108963A (en) * | 2007-10-31 | 2009-05-21 | Ntn Corp | Rolling member |
| CN203627524U (en) * | 2013-12-09 | 2014-06-04 | 浙江大学 | Rolling bearing with texture sequences on roller path and spherical surface |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455005A (en) * | 2014-11-27 | 2015-03-25 | 镇江建华轴承有限公司 | Long-life rolling bearing with specific texture sequence on raceway surface |
| CN109488694A (en) * | 2018-12-26 | 2019-03-19 | 西安交通大学 | A kind of lubricating method of the rolling bearing of Surface Texture auxiliary |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671493B (en) | 2016-05-11 |
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Granted publication date: 20160511 Termination date: 20181209 |
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