CN203627525U - Rolling bearing of integrated microstructure - Google Patents
Rolling bearing of integrated microstructure Download PDFInfo
- Publication number
- CN203627525U CN203627525U CN201320801758.6U CN201320801758U CN203627525U CN 203627525 U CN203627525 U CN 203627525U CN 201320801758 U CN201320801758 U CN 201320801758U CN 203627525 U CN203627525 U CN 203627525U
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- Prior art keywords
- fibers
- roller
- layer
- bearing
- rolling bearing
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- 238000005096 rolling process Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract 7
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000004901 spalling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009950 felting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model discloses a rolling bearing of an integrated microstructure. The rolling bearing of the integrated microstructure comprises a bearing outer ring, a bearing inner ring, a retainer and a cylindrical or conical roller, wherein the cylindrical surface or the conical surface of the cylindrical or conical roller are integrated with more than two layers of fiber layers which are ranked at the regular extending direction; or the cylindrical or conical roller is integrally composed of fiber layers which are ranked in the regular extending direction; the fiber layers are interwoven longitudinally and horizontally to form a cylindrical or conical roller surface layer, and the thickness of the interwoven structure is greater than quardruple semi-width of a hertz contact region. According to the utility model, the extending direction of the fiber layers and the extending direction of cracks are mutually perpendicular; the fiber layers can block the generation and expanding of fatigue cracks well, and can prolong the roller contact fatigue service life, thereby prolonging the service life of the bearing; the fiber layers are formed by alternatively overlapping fibers with the same or mutual perpendicular extending directions, so that bidirectional cracks generated when the roller rolls bidirectionally can be prevented.
Description
Technical field
The utility model relates to a kind of rolling bearing, especially relates to a kind of rolling bearing of integrating microstructure.
Background technique
Since later stage in the sixties, along with the raising of steel product quality, in bearing failure form, originate from the spalling failure that bearing surface crackle produces more common.
In rolling bearing, rolling element or Internal and external cycle rolling surface, due to the repeated action of contact load, form crackle and continue expansion, until metal surface produces sheet or some hole shape peels off, this phenomenon is called Contact Fatigue Spalling.Contact fatigue failure process is the generation of fatigue crack, and expansion is until peel off.According to handkerchief nurse Green's hypothesis, fatigue crack originates from lower maximum dynamically shearing stress place, surface, and this crackle often becomes miter angle with rolling element surface, and crackle is along 45 degree Directional Extensions.
The Contact Fatigue Spalling of roller is a kind of principal mode of bearing failure, strengthens roller and can effectively improve bearing working life fatigue life by improving roller structure.
Summary of the invention
The purpose of this utility model is to provide a kind of rolling bearing of integrating microstructure, is integrated with the certain layer of fibers of arranging of multilayer or integral extension direction on bearing roller, and layer of fibers extension direction becomes the rolling bearing at miter angle or 135 degree angles with roller axis.
The technical solution adopted in the utility model is:
The utility model comprises bearing outer ring, bearing inner race, retainer and cylinder or tapered roller; Described cylinder or the cylndrical surface of tapered roller or conical surface are integrated the certain layer of fibers of arranging of 2 layers of above extension direction; Or the entirety of cylinder or tapered roller forms by the certain layer of fibers of arranging of extension direction, layer of fibers interweaves in length and breadth and forms cylinder or tapered roller top layer, and pilotaxitic texture thickness is greater than four times of hertz contact area half-breadths.
The certain layer of fibers of arranging of described extension direction, this layer of fibers extension direction becomes miter angle or 135 degree angles with roller axis direction, and this layer of fibers extension direction is vertical with roller fatigue crack bearing of trend.
Described layer of fibers is alternately formed by stacking by the orthogonal fiber of the direction that extends.
Described fibrolaminar material adopts the material with better ductility and higher Mechanics of Machinery intensity, is GCr15, GCr9SiMn or GCr18Mo; It is the steel wire of circle or flat, rectangular that fiber adopts cross section, and circular fiber diameter is 10 ~ 500 μ m, and flat, rectangular fiber thickness is 2 ~ 50 μ m, and width is 10 ~ 500 μ m.
The beneficial effect the utlity model has is:
1, layer of fibers extension direction is mutually vertical with crack advance direction, and layer of fibers can stop the generation of fatigue crack and the expansion of fatigue crack well, improves roller contact fatigue life, thereby improves the working life of bearing.
2, layer of fibers is identical by extension direction or orthogonal fiber is alternately formed by stacking, the two-way crackle producing can prevent roller Double roll like this time.
Accompanying drawing explanation
Fig. 1 is the distribution of contact figure on cylindrical roller axial direction.
Fig. 2 integrates microstructure cylindrical roller cross section.
Fig. 3 is full fiber layer structure cylindrical roller cross section.
Fig. 4 is the fiber layer structure schematic diagram interweaving in length and breadth.
Fig. 5 integrates microstructure cylindrical roller External view.
Fig. 6 integrates microstructure tapered roller External view.
Fig. 7 is circular fiber cross-sectional view.
Fig. 8 is flat, rectangular fiber cross section figure.
In figure 1, bearing outer ring, 2, cylindrical roller, 3, bearing inner race, 4, layer of fibers, 5, cylindrical roller rolls core, 6, integrate microstructure cylindrical roller, 7, integrate microstructure tapered roller.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1 and Figure 2, the utility model comprises bearing outer ring 1, bearing inner race 3, retainer and cylinder or tapered roller; Described cylinder or the cylndrical surface of tapered roller or conical surface are integrated the certain layer of fibers 4 of arranging of 2 layers of above extension direction; Or the entirety of cylinder or tapered roller forms by the certain layer of fibers 4 of arranging of extension direction, as shown in Figure 3.Layer of fibers 4 interweaves in length and breadth and forms cylinder or tapered roller top layer, and pilotaxitic texture thickness is greater than four times of hertz contact area half-breadths.
As shown in Figure 1, in rolling bearing working procedure, roller 2 is subject to alternating stress, easily produces contact fatigue, can obtain according to theory analysis, and the fatigue crack that roller 2 produces, along the expansion of roller circumference miter angle, conforms to engineering actual conditions.F is roller axis direction distribution of force.
As shown in Figure 4, the certain layer of fibers of arranging of described extension direction, this layer of fibers extension direction becomes miter angle or 135 degree angles with roller axis direction, and this layer of fibers extension direction is vertical with roller fatigue crack bearing of trend, constraint Crack Extension, improves roller fatigue life.
As shown in Figure 4, described layer of fibers is alternately formed by stacking by the orthogonal fiber of the direction that extends.
Described fibrolaminar material adopts the material with better ductility and higher Mechanics of Machinery intensity, and as GCr15, GCr9SiMn or GCr18Mo etc., it is the steel wire of circle or flat, rectangular that fiber adopts cross section, circular fiber diameter
dbe 10 ~ 500 μ m, flat, rectangular fiber thickness
hbe 2 ~ 50 μ m, width
bbe 10 ~ 500 μ m.As shown in Figure 7, Figure 8.
As shown in Figure 5, be to integrate microstructure cylindrical roller External view.
As shown in Figure 6, be to integrate microstructure tapered roller External view.
Working principle of the present utility model is:
In rolling bearing, the fatigue failure of roller mostly is the Crack Extension that becomes miter angle direction along roller surface, the utility model has been integrated one deck fibrous structure on roller circumference, fibrolaminar extension direction is mutually vertical with direction of crack propagation, become reciprocal miter angle with roller surface, stop generation and the expansion of crackle.Layer of fibers is to be formed by the felting that is mutually an angle of 90 degrees, can effectively stop the expansion of crackle along left and right two directions.
Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model is limited; in the protection domain of spirit of the present utility model and claim, any modification and change that the utility model is made, all fall into protection domain of the present utility model.
Claims (4)
1. integrate a rolling bearing for microstructure, comprise bearing outer ring, bearing inner race, retainer and cylinder or tapered roller; It is characterized in that: described cylinder or the cylndrical surface of tapered roller or conical surface are integrated the certain layer of fibers of arranging of 2 layers of above extension direction; Or the entirety of cylinder or tapered roller forms by the certain layer of fibers of arranging of extension direction, layer of fibers interweaves in length and breadth and forms cylinder or tapered roller top layer, and pilotaxitic texture thickness is greater than four times of hertz contact area half-breadths.
2. a kind of rolling bearing of integrating microstructure according to claim 1, it is characterized in that: the certain layer of fibers of arranging of described extension direction, this layer of fibers extension direction becomes miter angle or 135 degree angles with roller axis direction, this layer of fibers extension direction is vertical with roller fatigue crack bearing of trend.
3. a kind of rolling bearing of integrating microstructure according to claim 1, is characterized in that: described layer of fibers is alternately formed by stacking by the orthogonal fiber of the direction that extends.
4. a kind of rolling bearing of integrating microstructure according to claim 1, is characterized in that: described fibrolaminar material adopts the material with better ductility and higher Mechanics of Machinery intensity, is GCr15, GCr9SiMn or GCr18Mo; It is the steel wire of circle or flat, rectangular that fiber adopts cross section, and circular fiber diameter is 10 ~ 500 μ m, and flat, rectangular fiber thickness is 2 ~ 50 μ m, and width is 10 ~ 500 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801758.6U CN203627525U (en) | 2013-12-09 | 2013-12-09 | Rolling bearing of integrated microstructure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801758.6U CN203627525U (en) | 2013-12-09 | 2013-12-09 | Rolling bearing of integrated microstructure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627525U true CN203627525U (en) | 2014-06-04 |
Family
ID=50814008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320801758.6U Expired - Lifetime CN203627525U (en) | 2013-12-09 | 2013-12-09 | Rolling bearing of integrated microstructure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697061A (en) * | 2013-12-09 | 2014-04-02 | 浙江大学 | Rolling bearing integrated with micro-structure |
| CN113167320A (en) * | 2018-12-07 | 2021-07-23 | Ntn株式会社 | Tapered roller bearing |
-
2013
- 2013-12-09 CN CN201320801758.6U patent/CN203627525U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697061A (en) * | 2013-12-09 | 2014-04-02 | 浙江大学 | Rolling bearing integrated with micro-structure |
| CN103697061B (en) * | 2013-12-09 | 2015-10-07 | 浙江大学 | Integrate the rolling bearing of microstructure |
| CN113167320A (en) * | 2018-12-07 | 2021-07-23 | Ntn株式会社 | Tapered roller bearing |
| CN113167320B (en) * | 2018-12-07 | 2022-11-11 | Ntn株式会社 | Tapered roller bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20151007 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |