CN103032469B - Ball basal plane curvature variation tapered roller - Google Patents
Ball basal plane curvature variation tapered roller Download PDFInfo
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- CN103032469B CN103032469B CN201210542212.3A CN201210542212A CN103032469B CN 103032469 B CN103032469 B CN 103032469B CN 201210542212 A CN201210542212 A CN 201210542212A CN 103032469 B CN103032469 B CN 103032469B
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Abstract
The present invention relates to bearing mnanufacture field, particularly relate to a kind of ball basal plane curvature variation tapered roller spherical base surface of tapered roller being carried out to structure optimization.Basal plane of the present invention is divided into three parts, namely by the part A of roller outer diameter, and the part B in the middle of ball basal plane, and by the C part in the middle of end face.The present invention is by carrying out variation design to spherical base surface of tapered roller radius of curvature, i.e. SR1 < SR2, SR3 < SR2, realize the radius of curvature by the part of roller outer diameter and the radius of curvature leaning on the radius of curvature of end face intermediate portion to be all less than ball basal plane intermediate portion, ensure the contact position of roller ball basal plane and inner ring large-flange in the middle part of roller ball basal plane in position, also Curve guide impeller has been carried out to ball basal plane end face width simultaneously.The present invention changes the defect that the single radius of curvature of spherical base surface of tapered roller causes, and reduces roller ball basal plane and peels off probability, effectively reduce the appearance of the failure conditions of tapered roller bearing, the working life of great bearing.
Description
technical fieldthe present invention relates to bearing mnanufacture field, particularly relate to a kind of ball basal plane curvature variation tapered roller spherical base surface of tapered roller being carried out to structure optimization.
background techniquealong with the development of modern equipment manufacturing industry and the progressively raising of application technology, bearing is faced with more and more higher requirement as the product of its indispensability, also proposes higher requirement for the tapered roller bearing be applied under high speed, heavily loaded condition simultaneously.In the failure mode of tapered roller bearing, inner ring rib peels off, and the ratio shared by roller ball basal plane peeling conditions is increasing.
At present, the design of domestic spherical base surface of tapered roller, all designs by Luoyang bearing research institute " tapered roller bearing design method ", and namely the contact position of roller ball basal plane and inner ring large-flange is in the middle part of roller ball basal plane in 1/3 position.But existing design method contact position affects larger by the radius of curvature SR of ball basal plane, its existing spherical base surface of tapered roller radius of curvature SR is consistent, when can not ensure that the running of bearing uses completely, the contact position of roller ball basal plane and inner ring large-flange all drops in the middle part of roller ball basal plane in 1/3 position, thus causes roller ball basal plane to peel off.
In order to head it off, need to be optimized design to tapered roller bearing roller ball basal plane, develop a kind of new structure basal plane tapered roller.
summary of the inventionin view of the defect that prior art exists, the object of the invention is to provide a kind of novel tapered roller, improve the defect that existing spherical base surface of tapered roller only has a radius of curvature, and then reduce the appearance of tapered roller bearing failure conditions.
For achieving the above object, technological scheme of the present invention is as follows:
Ball basal plane curvature variation tapered roller, is characterized in that: described spherical base surface of tapered roller is divided into three parts, and namely by the part A of roller outer diameter, its radius of curvature is SR1, and end face width is D1; Part B in the middle of ball basal plane, its radius of curvature is SR2, and end face width is D2; And by the C part in the middle of end face, its radius of curvature is SR3, and end face width is D3.
Select excellent, the radius of curvature by the part A of roller outer diameter is the radius of curvature of the part B be less than in the middle of ball basal plane, i.e. SR1 < SR2; Radius of curvature by the C part in the middle of end face is less than the radius of curvature of the part B in the middle of basal plane, i.e. SR3 < SR2.
Further the radius of curvature of the preferred part A by roller outer diameter can be divided into and is greater than, is less than and equals three kinds of situations according to design usage requirement with the radius of curvature by the C part in the middle of end face, i.e. SR1 > SR3, SR1=SR3, SR1 < SR3.
Preferably, can design according to design usage requirement by the part B in the middle of the part A of roller outer diameter, ball basal plane and by the end face width of the C part in the middle of end face, namely be divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ D3 five kinds design.
The present invention is by carrying out variation design to spherical base surface of tapered roller radius of curvature, i.e. SR1 < SR2, SR3 < SR2, realize the radius of curvature by the part of roller outer diameter and the radius of curvature leaning on the radius of curvature of end face intermediate portion to be all less than ball basal plane intermediate portion, ensure the contact position of roller ball basal plane and inner ring large-flange in the middle part of roller ball basal plane in position, simultaneously for adapting to different application target and designing requirement, further Curve guide impeller has also been carried out for ball basal plane end face width, reduce roller ball basal plane and peel off probability, the appearance of the failure conditions of effective minimizing tapered roller bearing.
Advantage of the present invention is as follows: the present invention compared with prior art, the present invention changes the defect that the single radius of curvature of traditional spherical base surface of tapered roller causes, reduce roller ball basal plane and peel off probability, the appearance of the failure conditions of effective minimizing tapered roller bearing, for domestic initiation, the working life of great bearing.
Accompanying drawing explanation
Fig. 1 is structural representation sketch of the present invention;
Fig. 2 is that Fig. 1 ball basal plane structure amplifies simplified schematic diagram;
Fig. 3 is ordinary conical roller structure simplified schematic diagram.
In figure: 1, by the part A of roller outer diameter, 2, part B in the middle of ball basal plane, 3, by the C part in the middle of end face.
Embodiment
The present invention is illustrated below in conjunction with accompanying drawing:
As shown in Figure 1, Figure 2, Figure 3 shows, existing tapered roller is the single radius of curvature of ball basal plane (Fig. 3), easily there is roller ball basal plane peeling conditions, and the present invention is relative to Fig. 3, as Fig. 1,2, variation design is carried out to spherical base surface of tapered roller radius of curvature, namely described spherical base surface of tapered roller is divided into three parts, namely by the part A 1 of roller outer diameter, its radius of curvature is SR1, and end face width is D1; Part B 2 in the middle of ball basal plane, its radius of curvature is SR2, and end face width is D2; And by the C part 3 in the middle of end face, its radius of curvature is SR3, and end face width is D3.
Select excellent, the radius of curvature by the part A 1 of roller outer diameter is the radius of curvature of the part B 2 be less than in the middle of ball basal plane, i.e. SR1 < SR2; Radius of curvature by the C part 3 in the middle of end face is less than the radius of curvature of the part B 2 in the middle of basal plane, i.e. SR3 < SR2.
Further the radius of curvature of the preferred part A 1 by roller outer diameter can be divided into and is greater than, is less than and equals three kinds of situations according to design usage requirement with the radius of curvature by the C part 3 in the middle of end face, i.e. SR1 > SR3, SR1=SR3, SR1 < SR3.
Preferably, can design according to design usage requirement by the part A 1 of roller outer diameter, the part B 2 of ball basal plane centre and the end face width by the C part 3 in the middle of end face, namely be divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ D3 five kinds design.
The present invention is by carrying out variation design to spherical base surface of tapered roller radius of curvature, i.e. SR1 < SR2, SR3 < SR2, realize the radius of curvature by the part of roller outer diameter and the radius of curvature leaning on the radius of curvature of end face intermediate portion to be all less than ball basal plane intermediate portion, ensure the contact position of roller ball basal plane and inner ring large-flange in the middle part of roller ball basal plane in position, simultaneously for adapting to different application target and designing requirement, further Curve guide impeller has also been carried out for ball basal plane end face width, reduce roller ball basal plane and peel off probability, the appearance of the failure conditions of effective minimizing tapered roller bearing.
Claims (1)
1. ball basal plane curvature variation tapered roller, is characterized in that: described spherical base surface of tapered roller is divided into three parts, and namely by A part (1) of roller outer diameter, its radius of curvature is SR1, and end face width is D1; B part (2) in the middle of ball basal plane, its radius of curvature is SR2, and end face width is D2; And by C part (3) in the middle of end face, its radius of curvature is SR3, and end face width is D3;
The radius of curvature of the described part A (1) by roller outer diameter is the radius of curvature of B part (2) be less than in the middle of ball basal plane, i.e. SR1 < SR2; Radius of curvature by C part (3) in the middle of end face is less than the radius of curvature of B part (2) in the middle of ball basal plane, i.e. SR3 < SR2;
The radius of curvature of described A part (1) by roller outer diameter can be divided into and is greater than, is less than and equals three kinds of situations according to design usage requirement with the radius of curvature by C part (3) in the middle of end face, i.e. SR1 > SR3, SR1=SR3, SR1 < SR3;
B in the middle of the described part of the A by roller outer diameter (1), ball basal plane partly (2) and the end face width by C part (3) in the middle of end face can design according to design usage requirement, is namely divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ D3 five kinds design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542212.3A CN103032469B (en) | 2012-12-14 | 2012-12-14 | Ball basal plane curvature variation tapered roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542212.3A CN103032469B (en) | 2012-12-14 | 2012-12-14 | Ball basal plane curvature variation tapered roller |
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| Publication Number | Publication Date |
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| CN103032469A CN103032469A (en) | 2013-04-10 |
| CN103032469B true CN103032469B (en) | 2015-09-09 |
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| CN201210542212.3A Active CN103032469B (en) | 2012-12-14 | 2012-12-14 | Ball basal plane curvature variation tapered roller |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005016533A (en) * | 2003-06-23 | 2005-01-20 | Nissan Motor Co Ltd | Roller bearing and toroidal type continuously variable transmission using the same |
| WO2007071229A1 (en) * | 2005-12-21 | 2007-06-28 | Schaeffler Kg | Rolling bearing with improved rim geometry |
| CN101371056A (en) * | 2005-12-21 | 2009-02-18 | 谢夫勒两合公司 | Rolling bearing |
| CN201687859U (en) * | 2010-05-19 | 2010-12-29 | 福建省永安轴承有限责任公司 | Tapered roller bearing with spherical inner ring baffle edge face |
| WO2012160147A1 (en) * | 2011-05-24 | 2012-11-29 | Aktiebolaget Skf | Geometric concept for a rolling element roller of a roller bearing |
| CN203067549U (en) * | 2012-12-14 | 2013-07-17 | 瓦房店轴承集团有限责任公司 | Spherical base plane curvature variation tapered roller |
-
2012
- 2012-12-14 CN CN201210542212.3A patent/CN103032469B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005016533A (en) * | 2003-06-23 | 2005-01-20 | Nissan Motor Co Ltd | Roller bearing and toroidal type continuously variable transmission using the same |
| WO2007071229A1 (en) * | 2005-12-21 | 2007-06-28 | Schaeffler Kg | Rolling bearing with improved rim geometry |
| CN101371056A (en) * | 2005-12-21 | 2009-02-18 | 谢夫勒两合公司 | Rolling bearing |
| CN201687859U (en) * | 2010-05-19 | 2010-12-29 | 福建省永安轴承有限责任公司 | Tapered roller bearing with spherical inner ring baffle edge face |
| WO2012160147A1 (en) * | 2011-05-24 | 2012-11-29 | Aktiebolaget Skf | Geometric concept for a rolling element roller of a roller bearing |
| CN203067549U (en) * | 2012-12-14 | 2013-07-17 | 瓦房店轴承集团有限责任公司 | Spherical base plane curvature variation tapered roller |
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| CN103032469A (en) | 2013-04-10 |
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