CN103032469A - Sphere cardinal plane curvature variation tapered roller - Google Patents
Sphere cardinal plane curvature variation tapered roller Download PDFInfo
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- CN103032469A CN103032469A CN2012105422123A CN201210542212A CN103032469A CN 103032469 A CN103032469 A CN 103032469A CN 2012105422123 A CN2012105422123 A CN 2012105422123A CN 201210542212 A CN201210542212 A CN 201210542212A CN 103032469 A CN103032469 A CN 103032469A
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Abstract
The invention relates to the field of bearing manufacturing, in particular to a sphere cardinal plane curvature variation tapered roller, which optimizes the structure of the sphere cardinal plane of a tapered roller. The cardinal plane of the tapered roller comprises three parts, namely an A part close to the outer diameter of the roller, a B part in the middle of the sphere cardinal plane and a C part close to the middle of the end surface. According to the invention, by performing a variation design on the curvature radius of sphere cardinal plane of the tapered roller, that is SR1 is smaller than SR2, and SR3 is smaller than SR2, the curvature radius of the part close to the outer diameter of the roller and that of the part close to the middle of the end surface both smaller then the curvature radius of middle part of the sphere cardinal plane is realized, so that the contact part of the sphere cardinal plane of the roller and the large rib of an inner ring being located at the middle of the sphere cardinal plane of the roller is ensured, while an improvement design is performed on the end surface width of the sphere cardinal plane. The sphere cardinal plane curvature variation tapered roller solves the defects caused by the single curvature radius of the sphere cardinal plane of the tapered roller, reduces the possibility of the stripping of the sphere cardinal plane of the roller, effectively reduces the occurrences of failure case of conical roller bearings, and prolongs the service life of bearings.
Description
Technical fieldThe present invention relates to bearing and make the field, concrete relate to a kind of ball basal plane curvature variation tapered roller that spherical base surface of tapered roller is carried out 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 its indispensable product, also proposes higher requirement for the tapered roller bearing under the condition that is applied to high speed, heavy duty simultaneously.In the failure mode of tapered roller bearing, inner ring rib peels off, and it is increasing that the roller ball basal plane peels off the shared ratio of situation.
At present, the design of domestic spherical base surface of tapered roller, all by Luoyang bearing research institute " tapered roller bearing design method " design, namely the contact position of roller ball basal plane and inner ring large-flange is in 1/3 position, roller ball basal plane middle part.It is larger that but existing design method contact position is affected by the radius of curvature SR of ball basal plane, its existing spherical base surface of tapered roller radius of curvature SR is consistent, in the time of can not guaranteeing the running use of bearing fully, the contact position of roller ball basal plane and inner ring large-flange all drops in 1/3 position, roller ball basal plane middle part, thereby causes the roller ball basal plane to peel off.
For 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 inventionDefective in view of prior art exists the objective of the invention is to provide a kind of novel tapered roller, has improved the defective that existing spherical base surface of tapered roller only has a radius of curvature, and then reduces 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, it is characterized in that: described spherical base surface of tapered roller is divided into three parts, and namely by the A part of roller outer diameter, its radius of curvature is SR1, and the end face width is D1; B part in the middle of the ball basal plane, its radius of curvature is SR2, the end face width is D2; And by the C part in the middle of the end face, its radius of curvature is SR3, and the end face width is D3.
Selecting excellently, be less than the radius of curvature partly of the B in the middle of the ball basal plane, i.e. SR1＜SR2 by the radius of curvature of the A of roller outer diameter part; By the radius of curvature of the radius of curvature partly of the C in the middle of the end face less than the part of the B in the middle of the basal plane, i.e. SR3＜SR2.
Further the radius of curvature of preferred A part by roller outer diameter with by the radius of curvature of the part of the C in the middle of the end face can according to the design usage requirement be divided into greater than, less than and equal three kinds of situations, i.e. SR1＞SR3, SR1=SR3, SR1＜SR3.
Preferably, lean on A part, the B part in the middle of the ball basal plane of roller outer diameter and lean on the end face width of the middle C part of end face to design according to the design usage requirement, namely be divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ five kinds of designs of D3.
The present invention is by design that the spherical base surface of tapered roller radius of curvature is made a variation, be SR1＜SR2, SR3＜SR2, realize by the radius of curvature of the part of roller outer diameter with by the radius of curvature of end face intermediate portion all less than the radius of curvature of ball basal plane intermediate portion, guarantee that the contact position of roller ball basal plane and inner ring large-flange is in position, roller ball basal plane middle part, simultaneously for adapting to different application targets and designing requirement, also carried out further improvement design for ball basal plane end face width, reduce the roller ball basal plane and peel off probability, effectively reduce the appearance of the failure conditions of tapered roller bearing.
Advantage of the present invention is as follows: the present invention compared with prior art, the present invention has changed the defective that the single radius of curvature of traditional spherical base surface of tapered roller causes, reduce the roller ball basal plane and peel off probability, effectively reduce the appearance of the failure conditions of tapered roller bearing, be domestic initiation, greatly the working life of bearing.
Description of drawings
Fig. 1 is structural representation sketch of the present invention;
Fig. 2 is that Fig. 1 ball basal plane structure is amplified simplified schematic diagram;
Fig. 3 is common tapered roller structural representation sketch.
Among the figure: 1, by the A part of roller outer diameter, 2, the B part in the middle of the ball basal plane, 3, by the C part in the middle of the end face.
Embodiment
Specify the present invention below in conjunction with accompanying drawing:
Such as Fig. 1, Fig. 2, shown in Figure 3, existing tapered roller is the single radius of curvature of ball basal plane (Fig. 3), be prone to the roller ball basal plane and peel off situation, and the present invention is with respect to Fig. 3, such as Fig. 1,2, to the design that makes a variation of spherical base surface of tapered roller radius of curvature, be that described spherical base surface of tapered roller is divided into three parts, namely by the A part 1 of roller outer diameter, its radius of curvature is SR1, and the end face width is D1; B part 2 in the middle of the ball basal plane, its radius of curvature is SR2, the end face width is D2; And by the C part 3 in the middle of the end face, its radius of curvature is SR3, and the end face width is D3.
Selecting excellently, be radius of curvature less than the B part 2 of ball basal plane centre by the radius of curvature of the A part 1 of roller outer diameter, i.e. SR1＜SR2; Lean on the radius of curvature of the middle C part 3 of end face less than the radius of curvature of the B part 2 in the middle of the basal plane, i.e. SR3＜SR2.
Further the radius of curvature of preferred A part 1 by roller outer diameter with by the radius of curvature of the C part 3 in the middle of the end face can according to the design usage requirement be divided into greater than, less than and equal three kinds of situations, i.e. SR1＞SR3, SR1=SR3, SR1＜SR3.
Preferably, lean on A part 1, the B part 2 in the middle of the ball basal plane of roller outer diameter and lean on the end face width of the middle C part 3 of end face to design according to the design usage requirement, namely be divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ five kinds of designs of D3.
The present invention is by design that the spherical base surface of tapered roller radius of curvature is made a variation, be SR1＜SR2, SR3＜SR2, realize by the radius of curvature of the part of roller outer diameter with by the radius of curvature of end face intermediate portion all less than the radius of curvature of ball basal plane intermediate portion, guarantee that the contact position of roller ball basal plane and inner ring large-flange is in position, roller ball basal plane middle part, simultaneously for adapting to different application targets and designing requirement, also carried out further improvement design for ball basal plane end face width, reduce the roller ball basal plane and peel off probability, effectively reduce the appearance of the failure conditions of tapered roller bearing.
Claims (4)
1. ball basal plane curvature variation tapered roller, it is characterized in that: described spherical base surface of tapered roller is divided into three parts, and namely by the A part (1) of roller outer diameter, its radius of curvature is SR1, and the end face width is D1; B part (2) in the middle of the ball basal plane, its radius of curvature is SR2, the end face width is D2; And by the part of the C in the middle of the end face (3), its radius of curvature is SR3, and the end face width is D3.
2. ball basal plane curvature according to claim 1 variation tapered roller is characterized in that: the radius of curvature of described A part (1) by roller outer diameter is the radius of curvature less than the part of the B in the middle of the ball basal plane (2), i.e. SR1＜SR2; Lean on the radius of curvature of the middle C part (3) of end face less than the radius of curvature of the part of the B in the middle of the basal plane (2), i.e. SR3＜SR2.
3. ball basal plane curvature according to claim 1 variation tapered roller, it is characterized in that: the radius of curvature of described A part (1) by roller outer diameter with by the radius of curvature of the part of the C in the middle of the end face (3) can according to the design usage requirement be divided into greater than, less than and equal three kinds of situations, be SR1＞SR3, SR1=SR3, SR1＜SR3.
4. ball basal plane curvature according to claim 1 variation tapered roller, it is characterized in that: described by roller outer diameter A part (1), the B part (2) in the middle of the ball basal plane and can design according to the design usage requirement by the end face width of the part of the C in the middle of the end face (3), namely be divided into D1=D2=D3; D1=D2 ≠ D3; D1=D3 ≠ D2; D1 ≠ D2=D3; D1 ≠ D2 ≠ five kinds of designs of D3.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN103032469A true CN103032469A (en) | 2013-04-10 |
| CN103032469B 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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| CN103032469B (en) | 2015-09-09 |
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