CN101776121B - Three-point contact thrust ball bearing and design method - Google Patents
Three-point contact thrust ball bearing and design method Download PDFInfo
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- CN101776121B CN101776121B CN2010101250237A CN201010125023A CN101776121B CN 101776121 B CN101776121 B CN 101776121B CN 2010101250237 A CN2010101250237 A CN 2010101250237A CN 201010125023 A CN201010125023 A CN 201010125023A CN 101776121 B CN101776121 B CN 101776121B
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- steel ball
- bearing
- point contact
- annular channel
- seat ring
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Abstract
The invention belongs to the technical field of thrust bearings and discloses a three-point contact thrust ball bearing and a design method. The three-point contact thrust ball bearing consists of a shaft washer, a housing washer, a steel ball and a retainer, wherein the housing washer is provided with an annular channel, the longitudinal section of the channel is an arc curve consisting of two segments of arcs, the steel ball and the annular channel on the housing washer are in two-point contact, the two arcs are symmetrical relative to the spinning rotary central line of the steel ball, an included angle alpha is formed between the central line and the central line of the bearing, and an included angle beta is formed between the connection lines of two contact points of the steel ball and the annular channel and the steel ball core; and the shaft washer is not provided with a channel, and the steel ball and the shaft washer is in one-point contact. The invention makes the steel ball, the shaft washer and the housing washer have three contact points, so the axial bearing capacity is increased, the bearing capacity is about 4/3 times of that of a two-point contact thrust ball bearing, and radial load can also be borne so as to prolong the service life of the bearing.
Description
Technical field
The invention belongs to the thrust-bearing technical field, particularly relate to a kind of three-point contact thrust ball bearing and design method, be used for turntable mechanism.
Background technique
At present, generally the thrust ball bearing of Shi Yonging is made up of blowout patche, seat ring, steel ball and retainer, steel ball and retainer are arranged between blowout patche and the seat ring, steel ball rotates between blowout patche and seat ring, all establish the circular arc raceway groove on blowout patche and the seat ring, and this radius of arc is slightly larger than the steel ball radius, the thrust ball bearing of this structure only bears thrust load, do not bear radial load, and each steel ball and blowout patche and seat ring have only a point of contact, the axial carrying capacity of bearing is subjected to certain restriction; When the size of thrust ball bearing is restricted, and need bear bigger thrust load the time, can cause reduce greatly the working life of thrust ball bearing.And the machining accuracy of thrust ball bearing is difficult to guarantee that especially the coaxality of raceway groove is difficult to guarantee between blowout patche and the seat ring, because the raceway groove machining accuracy can not guarantee that therefore assembling height, the jerk value of a whole set of bearing are big, are difficult to be applied in the high-precision processing equipment.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide a kind of three-point contact thrust ball bearing and design method, its axial carrying capacity improves, lubricating in the time of can improving its manufacturability and bearing use greatly simultaneously under the prerequisite of the machining accuracy that guarantees bearing.
For achieving the above object, the present invention adopts following technological scheme:
A kind of three-point contact thrust ball bearing design method, this bearing includes two lassos, there is not raceway groove on the lasso, offer annular channel on another lasso, have angle α between the spin gyration center line of steel ball and the described bearing axis, have angle β between two point of contact of steel ball and annular channel and the line between the steel ball centre of sphere, to guarantee the radially load bearing requirements of bearing; The longitudinal section of the annular channel on the lasso is a circular curve that the crossing circular arc that is equated by two sections curvature constitutes, and groove curvature diameter footpath guarantees that greater than steel ball size when steel ball contacts with raceway groove be 2 contacts, increases the axial carrying capacity of bearing; Described two sections circular arc intersections have the transition arc chamfering, and this circular arc chamfering can effectively avoid stress to concentrate, and can store grease lubricated when guaranteeing bearing working.
A kind of three-point contact thrust ball bearing, it is made up of blowout patche, seat ring, steel ball and retainer, and retainer is arranged between blowout patche and the seat ring, and steel ball is assemblied in the pocket hole of retainer; Described seat ring is provided with annular channel, the longitudinal section of raceway groove is a circular curve that has two sections circular arcs to constitute, described steel ball has contact at 2 with annular channel on the seat ring, two sections circular arcs are about the spin gyration center line symmetry of steel ball, between this center line and the described bearing axis angle α is arranged, between two point of contact of steel ball and annular channel and the line between the steel ball centre of sphere angle β is arranged; Do not have raceway groove on the described blowout patche, steel ball has any to contact with blowout patche.
In the above-mentioned three-point contact thrust ball bearing, two sections radius of arc of described formation raceway groove longitudinal section equate that the groove curvature radius is 0.505～0.535 times of steel ball size.
In the above-mentioned three-point contact thrust ball bearing, there is the transition arc chamfering two sections circular arc joints of described formation raceway groove longitudinal section.
In the above-mentioned three-point contact thrust ball bearing, the spin gyration center line of described steel ball and the angle α between the described bearing axis are 45 ° ± 2 °.
In the above-mentioned three-point contact thrust ball bearing, two point of contact and the angle β between the line between the steel ball centre of sphere of described steel ball and annular channel are 90 °～110 °.
Because adopt aforesaid technological scheme, the present invention has following superiority:
This three-point contact thrust ball bearing, its reasonable in design is skillfully constructed, steel ball and blowout patche and seat ring have three point of contact, and axial carrying capacity is increased, and its bearing capacity is about 4/3 times of thrust ball bearing of 2 contacts, can also bear radial load, prolonged the working life of bearing; Because bearing has only seat ring to have raceway groove, only need on seat ring, to process raceway groove, blowout patche match grinding on surface grinding machine can guarantee whole assembling height, guarantees the machining accuracy of bearing; Lubricating when the trapped fuel fat structure in the raceway groove can better guarantee the bearing use.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is Fig. 1 " I " portion enlarged view;
Among the figure: the 1-blowout patche; The 2-steel ball; The 3-retainer; The 4-seat ring; 5 (a, b)-circular arcs; The 6-transition arc.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As shown in Fig. 1,2, three-point contact thrust ball bearing design method of the present invention, this method is based on the manufacturability that improves this bearing under the prerequisite that guarantees quality of processing, and its concrete steps are as follows:
(1) determines the boundary dimension of bearing according to the permission space of this bearing under the concrete operating mode, comprise the high T of inner diameter d, outer diameter D and assembling of bearing;
(2) under the condition that guarantees lasso intensity, the optimization aim function with the specified dynamic and static load of bearing during as design bearing is determined the steel ball size D of this bearing
w, steel ball number N and a whole set of bearing pitch diameter D
Pw
(3) according to steel ball size D
wAnd pitch diameter D
PwThe geometrical construction size of design blowout patche and seat ring in order to improve the technology capability of this bearing, does not have raceway groove on the blowout patche 1, offers annular channel on seat ring 4;
(4) there is not raceway groove on the blowout patche 1, blowout patche does not have radially bearing capacity, bearing radially bearing capacity is guaranteed by the annular channel on the seat ring, have angle α between the spin gyration center line of steel ball and the described bearing axis, make bearing bear thrust load and partly be decomposed into radial load, also promoted simultaneously the radially bearing capacity of this bearing, had angle β between two point of contact of steel ball and annular channel and the line between the steel ball centre of sphere, to guarantee the radially load bearing requirements of bearing;
(5) longitudinal section of the annular channel on the seat ring 4 is a crossing circular arc 5a who is equated by two sections curvature, the circular curve that 5b constitutes, and groove curvature diameter footpath is greater than steel ball size D
w, guarantee that when steel ball contacts with raceway groove be 2 contacts, increase the axial carrying capacity of bearing;
(6) two sections circular arc 5a, the 5b intersection on the annular channel has the transition arc chamfering, and this circular arc chamfering can effectively avoid stress to concentrate, and can store grease lubricated when guaranteeing bearing working.
Three-point contact thrust ball bearing of the present invention, it is made up of blowout patche 1, seat ring 4, steel ball 2 and retainer 3, and retainer 3 is arranged between blowout patche 1 and the seat ring 4, and steel ball 2 is assemblied in the pocket hole of retainer 3; Described seat ring is provided with annular channel, and the longitudinal section of raceway groove is a circular curve that has two sections circular arc 5a, 5b to constitute, and two sections radius of arc R equate, and greater than the steel ball radius r, radius of arc R is steel ball size D
w0.505～0.535 times, described steel ball has contact at 2 with annular channel on the seat ring, two sections circular arcs are about the spin gyration center line symmetry of steel ball, between this center line and the described bearing axis angle α is arranged, angle α is 45 ° ± 2 °, between two point of contact of steel ball and annular channel and the line between the steel ball centre of sphere angle β is arranged, angle β is 90 °～110 °; Do not have raceway groove on the described blowout patche 1, steel ball 2 has any to contact with blowout patche 1.
Described three-point contact thrust ball bearing, there is transition arc 6 its two sections circular arc 5a, 5b joint that constitutes the raceway groove longitudinal section, this circular arc chamfering can effectively avoid stress to concentrate, and lubricating in the time of to store grease with the assurance bearing working, the transition arc diameter requires according to trapped fuel fat and the thrust load size is determined, has both guaranteed that certain oil quantity of depositing bore bigger thrust load simultaneously.
Claims (4)
1. three-point contact thrust ball bearing, it is made up of blowout patche (1), seat ring (4), steel ball (2) and retainer (3), and retainer (3) is arranged between blowout patche (1) and the seat ring (4), and steel ball (2) is assemblied in the pocket hole of retainer (3); Described seat ring (4) is provided with annular channel, the longitudinal section of raceway groove is a circular curve that has two sections circular arcs (5a, 5b) to constitute, described steel ball has contact at 2 with annular channel on the seat ring, two sections circular arcs are about the spin gyration center line symmetry of steel ball, between this center line and the described bearing axis angle α is arranged, between two point of contact of steel ball and annular channel and the line between the steel ball centre of sphere angle β is arranged; It is characterized in that: there is transition arc chamfering (6) two sections circular arcs (5a, 5b) joint of the raceway groove longitudinal section on the described formation seat ring, and described blowout patche (1) is gone up no raceway groove, and steel ball has any to contact with blowout patche.
2. three-point contact thrust ball bearing according to claim 1 is characterized in that: two sections radius of arc R of described formation raceway groove longitudinal section equate that the groove curvature radius is 0.505～0.535 times of steel ball size.
3. three-point contact thrust ball bearing according to claim 1 is characterized in that: the spin gyration center line of described steel ball and the angle α between the described bearing axis are 45 ° ± 2 °.
4. three-point contact thrust ball bearing according to claim 1 is characterized in that: two point of contact and the angle β between the line between the steel ball centre of sphere of described steel ball and annular channel are 90 °～110 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101250237A CN101776121B (en) | 2010-03-16 | 2010-03-16 | Three-point contact thrust ball bearing and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101250237A CN101776121B (en) | 2010-03-16 | 2010-03-16 | Three-point contact thrust ball bearing and design method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776121A CN101776121A (en) | 2010-07-14 |
| CN101776121B true CN101776121B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101250237A Expired - Fee Related CN101776121B (en) | 2010-03-16 | 2010-03-16 | Three-point contact thrust ball bearing and design method |
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| Country | Link |
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| CN (1) | CN101776121B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742525A (en) * | 2013-12-18 | 2014-04-23 | 宁波摩根轴承有限公司 | Bearing |
| CN105673700A (en) * | 2016-04-20 | 2016-06-15 | 哈尔滨理工大学 | Full-surface contact ball bearing |
| PL233795B1 (en) * | 2017-11-16 | 2019-11-29 | Zbigniew Kusznierewicz | Rolling bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201513Y (en) * | 1994-06-21 | 1995-06-21 | 青岛轴承厂 | Four-point contact thrust ball bearing |
| CN2573751Y (en) * | 2001-09-30 | 2003-09-17 | 黑龙江省哈工大中俄科学技术合作有限公司 | Three-point contacting ball bearing |
| CN200989374Y (en) * | 2006-12-26 | 2007-12-12 | 上海康派尔轴承有限公司 | Radial ball bearing capable of separating external ring |
| CN100400907C (en) * | 2002-02-20 | 2008-07-09 | 日本精工株式会社 | Rotation support device for compressor pulley |
| CN101457785A (en) * | 2009-01-05 | 2009-06-17 | 圣格兰（嘉兴）光机电技术有限公司 | Three-point contact ball bearing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB474042A (en) * | 1936-04-22 | 1937-10-22 | G & J Weir Ltd | Improvements in and relating to anti-friction bearings |
| JP3814890B2 (en) * | 1996-09-26 | 2006-08-30 | 日本精工株式会社 | Low friction torque thrust ball bearing |
| JPH1113750A (en) * | 1997-06-30 | 1999-01-22 | Nippon Seiko Kk | Three-point contact ball bearing |
| JPH11247863A (en) * | 1998-03-06 | 1999-09-14 | Nippon Seiko Kk | Multipoint contact ball bearing |
| JP3815054B2 (en) * | 1998-05-20 | 2006-08-30 | 日本精工株式会社 | Thrust ball bearing |
| JP2004197789A (en) * | 2002-12-17 | 2004-07-15 | Koyo Seiko Co Ltd | Thrust bearing |
-
2010
- 2010-03-16 CN CN2010101250237A patent/CN101776121B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201513Y (en) * | 1994-06-21 | 1995-06-21 | 青岛轴承厂 | Four-point contact thrust ball bearing |
| CN2573751Y (en) * | 2001-09-30 | 2003-09-17 | 黑龙江省哈工大中俄科学技术合作有限公司 | Three-point contacting ball bearing |
| CN100400907C (en) * | 2002-02-20 | 2008-07-09 | 日本精工株式会社 | Rotation support device for compressor pulley |
| CN200989374Y (en) * | 2006-12-26 | 2007-12-12 | 上海康派尔轴承有限公司 | Radial ball bearing capable of separating external ring |
| CN101457785A (en) * | 2009-01-05 | 2009-06-17 | 圣格兰（嘉兴）光机电技术有限公司 | Three-point contact ball bearing |
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| Publication number | Publication date |
|---|---|
| CN101776121A (en) | 2010-07-14 |
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