CN104006072A - Roller bearing - Google Patents
Roller bearing Download PDFInfo
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- CN104006072A CN104006072A CN201310055772.0A CN201310055772A CN104006072A CN 104006072 A CN104006072 A CN 104006072A CN 201310055772 A CN201310055772 A CN 201310055772A CN 104006072 A CN104006072 A CN 104006072A
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- Prior art keywords
- plane
- trajectory orbital
- outer shroud
- interior ring
- roller
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Abstract
A roller bearing comprises an outer ring, an inner ring and multiple rollers, the outer ring and the inner ring are respectively provided with a rolling groove, each rolling groove is provided with two rail faces perpendicular to each other, and when the rollers can be in rolling contact with the rail faces of the outer ring and the rail faces of the inner ring, the rollers are arranged in the rolling groove of the outer ring and in the rolling groove of the inner ring, and accordingly the outer ring and the inner ring can be combined in a relatively rotating mode. The roller bearing is characterized in that the outer ring and the inner ring are respectively provided with a groove, each groove is located between two corresponding rail faces and concave from the two corresponding rail faces, and the ratio of the width of each rail face to the diameter of the corresponding roller is larger than or equal to 0.45 and is smaller than or equal to 0.62. Accordingly, friction resistance between the rollers of the roller bearing and the rail faces is small, and the rolling bearing is not prone to being damaged when rotating at high speed.
Description
Technical field
The present invention is relevant with roller bearing, particularly about a kind of low sliding friction roller bearing.
Background technique
Refer to the known roller bearing 10 of Fig. 1 and consist predominantly of an interior ring 11, one outer shroud 12, and can rollably be arranged at the most rollers 13 between this interior ring 11 and this outer shroud 12, this interior ring 11 and this outer shroud 12 have respectively two orthogonal plane of trajectory orbital 112, 122, respectively this roller 13 with its cylndrical surface 132 and this plane of trajectory orbital 112 wherein and wherein this plane of trajectory orbital 122 roll and contact, so that this interior ring 11 and this outer shroud 12 can mutually combine in relative rotation, the surface friction drag producing due to the contact of rolling is lower, therefore this interior ring 11 and this outer shroud 12 can relatively rotate quite swimmingly, and drive the required moment of its spinning movement also less.
In current roller bearing on the market, the length of each roller 13 approximates greatly the external diameter of roller 13, and also approximate greatly the width of each plane of trajectory orbital 112,122, therefore, the cylndrical surface 132 of each roller 13 almost can contact with plane of trajectory orbital 112,122 completely, yet, because the tangential velocity of plane of trajectory orbital 112,122 diverse locations is different, cause between roller 13 and plane of trajectory orbital 112,122 and produce and slide and increase surface friction drag.
In other words, the roller of known roller bearing and plane of trajectory orbital contact length are large, thereby its surface friction drag is large, when it is applied to high-revolving device, can easily damage because be rapidly heated, and therefore still have much room for improvement.
Summary of the invention
The object of the present invention is to provide a kind of roller bearing, the surface friction drag between its roller and plane of trajectory orbital is less, so this roller bearing is more not fragile under high speed rotating.
For achieving the above object, roller bearing provided by the invention, include an outer shroud, an interior ring and most roller, this outer shroud and this interior ring have respectively a sliding channel, respectively this sliding channel has two orthogonal plane of trajectory orbital, those rollers can roll and be arranged at contiguously the sliding channel of this outer shroud and the sliding channel of this interior ring simultaneously with the plane of trajectory orbital of this outer shroud and the plane of trajectory orbital of this interior ring, so that this outer shroud and this interior ring can mutually combine in relative rotation; This roller bearing is characterised in that:
The sliding channel of this outer shroud and the sliding channel of this interior ring have respectively a groove, the groove of this outer shroud is between this two plane of trajectory orbital of this outer shroud and from this two plane of trajectory orbital depression, the groove of this interior ring is between this two plane of trajectory orbital of this interior ring and from this two plane of trajectory orbital depression, and respectively the width of this plane of trajectory orbital and the ratio of the diameter of this roller are respectively more than or equal to 0.45 and be less than or equal to 0.62.
Described roller bearing, wherein, respectively the A/F of this groove meets following equation:
L＝(D-W)/1.414；
Wherein, L represents the respectively A/F of this groove, and D represents the respectively diameter of this roller, and W represents the respectively width of this plane of trajectory orbital.
Described roller bearing, wherein, this outer shroud has an inner side surface towards this interior ring, and the sliding channel of this outer shroud has two notches, this two notch lays respectively between this two plane of trajectory orbital and this inner side surface of this outer shroud, and the width of this of this outer shroud two plane of trajectory orbital is respectively the minimum range of this two notch of this outer shroud and the groove of this outer shroud.
Described roller bearing, wherein, this interior ring has an outer side surface towards this outer shroud, and the sliding channel of this interior ring has two notches, this two notch lays respectively between this two plane of trajectory orbital and this outer side surface of this interior ring, and the width of this of this interior ring two plane of trajectory orbital is respectively the minimum range of this two notch of this interior ring and the groove of this interior ring.
Described roller bearing, wherein, wherein this plane of trajectory orbital of this outer shroud and wherein this plane of trajectory orbital of this interior ring are with respect to the central axis of the roller contacting with its rolling and symmetrically; This plane of trajectory orbital of another of this outer shroud and another this plane of trajectory orbital of this interior ring are with respect to the central axis of the roller contacting with its rolling and symmetrically.
Described roller bearing, wherein, this outer shroud is that outer semi-ring is affixed forms by two.
Described roller bearing, wherein, this interior ring is that interior semi-ring is affixed forms by two.
Ratio by plane of trajectory orbital width provided by the present invention and roller diameter designs, roller bearing provided by the present invention is compared to known technology, sliding friction meeting between its roller and plane of trajectory orbital significantly reduces, and the load carrying capacity of roller bearing is also unlikely to reduce too many, especially under the behaviour in service for high speed rotating, conventionally workload demand all can slight reduction, and therefore roller bearing provided by the present invention can meet high-revolving user demand and not fragile.
Accompanying drawing explanation
Fig. 1 is the sectional view of known roller bearing;
The three-dimensional exploded view of the roller bearing that Fig. 2 provides for the present invention's one first preferred embodiment;
The three-dimensional combination figure of the roller bearing that Fig. 3 provides for this first preferred embodiment of the present invention;
Fig. 4 is along the sectional view of hatching line 4-4 in Fig. 3; And
The three-dimensional combination figure of the roller bearing that Fig. 5 provides for the present invention's one second preferred embodiment.
Label symbol explanation in accompanying drawing
Known technology part
10 roller bearings; 11 interior rings; 112 plane of trajectory orbital; 12 outer shrouds; 122 plane of trajectory orbital; 13 rollers; 132 cylndrical surface.
Part of the present invention
20 roller bearings; 30 outer shrouds; 32 outer semi-rings; 34 inner side surfaces; 36 sliding channels; 361,362 plane of trajectory orbital; 364 grooves; 365,366 notches; 40 interior rings; 44 outer side surfaces; 46 sliding channels; 461,462 plane of trajectory orbital; 464 grooves; 465,466 notches; 50 rollers; 52 cylndrical surface; 60 roller bearings; 70 outer shrouds; 80 interior rings; 82 interior semi-rings; D roller diameter; W plane of trajectory orbital width; L1, L2 central axis; L slot opening width.
Embodiment
Roller bearing provided by the present invention includes an outer shroud, an interior ring and most roller, this outer shroud and this interior ring have respectively a sliding channel, respectively this sliding channel has two orthogonal plane of trajectory orbital, those rollers can roll and be arranged at contiguously the sliding channel of this outer shroud and the sliding channel of this interior ring simultaneously with the plane of trajectory orbital of this outer shroud and the plane of trajectory orbital of this interior ring, so that this outer shroud and this interior ring can mutually combine in relative rotation; This roller bearing is characterised in that the sliding channel of this outer shroud and the sliding channel of this interior ring have respectively a groove, the groove of this outer shroud is between this two plane of trajectory orbital of this outer shroud and from this two plane of trajectory orbital depression, the groove of this interior ring is between this two plane of trajectory orbital of this interior ring and from this two plane of trajectory orbital depression, and respectively the width of this plane of trajectory orbital and the ratio of the diameter of this roller are respectively more than or equal to 0.45 and be less than or equal to 0.62.
Detailed structure, feature, assembling or the usage mode of relevant roller bearing provided by the present invention, described during the mode of execution in follow-up is described in detail.Yet, those skilled in the art, should be able to understand, those detailed descriptions and the cited specific embodiment of enforcement the present invention, only for the present invention is described, not in order to limit patent claim of the present invention.
Refer to Fig. 2 and Fig. 3, the roller bearing 20 that the present invention's one first preferred embodiment provides includes the interior ring 40 of an outer shroud 30,, and most roller 50.
In the present embodiment, this outer shroud 30 is by affixed the forming of two outer semi-rings 32.Refer to Fig. 4, this outer shroud 30 has an inner side surface 34, and the sliding channel 36 from this inner side surface 34 depressions, the cross section of this sliding channel 36 is generally V-shaped, there are two orthogonal plane of trajectory orbital 361,362, between this two plane of trajectory orbital 361,362 and from the groove 364 of these two plane of trajectory orbital, 361,362 depressions, and lay respectively at two notches 365,366 between this two plane of trajectory orbital 361,362 and this inner side surface 34.
This interior ring 40 has an outer side surface 44, and the sliding channel 46 from this outer side surface 44 depressions, this sliding channel 46 has two orthogonal plane of trajectory orbital 461,462, between this two plane of trajectory orbital 461,462 and from the groove 464 of these two plane of trajectory orbital, 461,462 depressions, and lays respectively at two notches 465,466 between this two plane of trajectory orbital 461,462 and this inner side surface 44.
This interior ring 40 is to be relatively arranged at this outer shroud 30 central authorities with its outer side surface 44 and the inner side surface 34 of this outer shroud 30, those rollers 50 can roll and be arranged at contiguously the sliding channel 36 of this outer shroud 30 and the sliding channel 46 of this interior ring 40 simultaneously with the plane of trajectory orbital of this outer shroud 30 and the plane of trajectory orbital of this interior ring 40, so that this outer shroud 30 and this interior ring 40 can mutually combine in relative rotation.
As shown in Figure 2, every two adjacent rollers 50 are arranged in a crossed manner, therefore, wherein the roller 50 of half quantity (for example, shown in Fig. 4 the right) is to roll and contact with the plane of trajectory orbital 361 of this outer shroud 30 and the plane of trajectory orbital of this interior ring 40 461 with its cylndrical surface 52, and the roller 50 of second half quantity (for example, shown in Fig. 4 left side) is to roll and contact with the plane of trajectory orbital 362 of this outer shroud 30 and the plane of trajectory orbital of this interior ring 40 462 with its cylndrical surface 52.
Respectively the length of this roller 50 generally equates with its diameter D, this two plane of trajectory orbital 361, 461 distance and this two plane of trajectory orbital 362, 462 distance also generally equates with the diameter D of roller 50, due to those sliding channels 36, 46 are provided with groove 364, 464 and notch 365, 366, 465, 466, respectively only cylndrical surface 52 meetings and plane of trajectory orbital 361 of a part of this roller 50, 362, 461, 462 roll contacts, thereby more known rolling bearing produces less sliding friction, but this roller bearing 20 is simultaneously also because of roller 50 and plane of trajectory orbital 361, 362, 461, 462 contact length is compared with little and reduce its load carrying capacity.Because breakaway torque is and square being directly proportional of aforesaid contact length, and load carrying capacity is to be directly proportional to aforesaid contact length, if diameter D is made as to 1, aforesaid contact length is made as x, can be calculated by following two equations the preferred values of x:
y＝x
2，0≤x≤1
y＝1-x，0≤x≤1
Aforementioned two equational result of calculations are x=0.62, meaning, when being reduced to 0.62 times of roller diameter D, the contact length of roller 50 and plane of trajectory orbital 361,362,461,462 can obviously produce the effect that reduces sliding friction, and be unlikely to make load carrying capacity excessively to reduce, therefore the width of this plane of trajectory orbital 361,362,461,462 (width of plane of trajectory orbital 361,362 is the minimum range of notch 365,366 and groove 364, and the width of plane of trajectory orbital 461,462 is the minimum range of notch 465,466 and groove 464) respectively can be designed to 0.62D.
Due to aforementioned analysis, only take the theoretical amount of sliding is consideration, but in fact still there are other factors to need to consider, for example damping of vibration, lubricant oil etc., for plane of trajectory orbital width W, (in Fig. 4, W is denoted as the width of plane of trajectory orbital 361, but W can be expressed as the respectively width of this plane of trajectory orbital 361,362,461,462 in this manual) relation of temperature rise while operating with roller bearing with the ratio of roller diameter D, actual test result shows, when W/D is less than 0.45, the minimizing of W value is also little for the effect of the minimizing of temperature rise.Therefore, the present invention is designed to be more than or equal to 0.45 and be less than or equal to 0.62 by the width W of this plane of trajectory orbital 361,362,461,462 respectively and the ratio of the diameter D of this roller 50 respectively, effectively to reduce sliding friction, make this roller bearing 20 more not fragile compared with known technology under high speed rotating.
In the present embodiment, the width W of those plane of trajectory orbital 361,362,461,462 equates, and, this two plane of trajectory orbital the 361, the 461st, with respect to the axis L 1 of the roller 50 contacting with its rolling and symmetrically, this two plane of trajectory orbital the 362, the 462nd, with respect to the axis L 2 of the roller 50 contact with its rolling and symmetrical; Thus, respectively this roller 50 is symmetrically with the contact segment of outer shroud 30 and interior ring 40, thereby can avoid roller 50 unbalance stress and reduce its load carrying capacity, and can avoid producing torsion and cause roller 50 fragile.Yet respectively the width of this plane of trajectory orbital 361,362,461,462 is not limited to equate, and be also not limited to meet aforesaid symmetric relation, as long as can meet above-mentioned ratio.
In addition, in the present embodiment, this plane of trajectory orbital the 361,362,461, the 462nd respectively, is positioned at the central section of the roller face 52 of roller 50, and under this situation, respectively the A/F L of this groove 364,464 meets following equation:
L＝(D-W)/1.414；
Thus, respectively this roller 50 is force-applied more on average promotes its load carrying capacity, and more can avoid roller 50 to damage.Yet respectively the A/F L of this groove 364,464 is not limited to meet aforesaid equation.
It is worth mentioning that, the roller bearing 20 that previous embodiment provides, ring 40 is one-body molded and design that outer shroud 30 is comprised of two outer semi-rings 32 can make those rollers 50 be easier to be arranged between inner and outer rings 40,30 in it.Yet, the feature that can make these roller bearing 20 capable of reducing friction resistances in foregoing and maintain load carrying capacity also can be applicable to the roller bearing 60 that the present invention's one second preferred embodiment as shown in Figure 5 provides, its outer shroud 70 is formed in one, and ring 80 is by affixed the forming of two interior semi-rings 82 in it, so design also has the effect that roller easily arranges; Or the present invention also can be inner and outer rings and is all integrated roller bearing.
Finally, must again illustrate, the constituent components that the present invention discloses in previous embodiment, only for illustrating, is not used for limiting the scope of the invention, the alternative or variation of other equivalent elements, and the claim scope that also should be the present patent application contains.
Claims (7)
1. a roller bearing, include an outer shroud, an interior ring and most roller, this outer shroud and this interior ring have respectively a sliding channel, respectively this sliding channel has two orthogonal plane of trajectory orbital, those rollers can roll and be arranged at contiguously the sliding channel of this outer shroud and the sliding channel of this interior ring simultaneously with the plane of trajectory orbital of this outer shroud and the plane of trajectory orbital of this interior ring, so that this outer shroud and this interior ring can mutually combine in relative rotation; This roller bearing is characterised in that:
The sliding channel of this outer shroud and the sliding channel of this interior ring have respectively a groove, the groove of this outer shroud is between this two plane of trajectory orbital of this outer shroud and from this two plane of trajectory orbital depression, the groove of this interior ring is between this two plane of trajectory orbital of this interior ring and from this two plane of trajectory orbital depression, and respectively the width of this plane of trajectory orbital and the ratio of the diameter of this roller are respectively more than or equal to 0.45 and be less than or equal to 0.62.
2. roller bearing according to claim 1, wherein, respectively the A/F of this groove meets following equation:
L＝(D-W)/1.414；
Wherein, L represents the respectively A/F of this groove, and D represents the respectively diameter of this roller, and W represents the respectively width of this plane of trajectory orbital.
3. roller bearing according to claim 1, wherein, this outer shroud has an inner side surface towards this interior ring, and the sliding channel of this outer shroud has two notches, this two notch lays respectively between this two plane of trajectory orbital and this inner side surface of this outer shroud, and the width of this of this outer shroud two plane of trajectory orbital is respectively the minimum range of this two notch of this outer shroud and the groove of this outer shroud.
4. roller bearing according to claim 1, wherein, this interior ring has an outer side surface towards this outer shroud, and the sliding channel of this interior ring has two notches, this two notch lays respectively between this two plane of trajectory orbital and this outer side surface of this interior ring, and the width of this of this interior ring two plane of trajectory orbital is respectively the minimum range of this two notch of this interior ring and the groove of this interior ring.
5. roller bearing according to claim 1, wherein, wherein this plane of trajectory orbital of this outer shroud and wherein this plane of trajectory orbital of this interior ring are with respect to the central axis of the roller contacting with its rolling and symmetrically; This plane of trajectory orbital of another of this outer shroud and another this plane of trajectory orbital of this interior ring are with respect to the central axis of the roller contacting with its rolling and symmetrically.
6. roller bearing according to claim 1, wherein, this outer shroud is that outer semi-ring is affixed forms by two.
7. roller bearing according to claim 1, wherein, this interior ring is that interior semi-ring is affixed forms by two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055772.0A CN104006072B (en) | 2013-02-21 | 2013-02-21 | Roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055772.0A CN104006072B (en) | 2013-02-21 | 2013-02-21 | Roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006072A true CN104006072A (en) | 2014-08-27 |
| CN104006072B CN104006072B (en) | 2016-10-05 |
Family
ID=51366895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055772.0A Active CN104006072B (en) | 2013-02-21 | 2013-02-21 | Roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006072B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387069A (en) * | 2015-11-20 | 2016-03-09 | 洛阳轴研科技股份有限公司 | Crossed roller bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163714A (en) * | 1982-03-24 | 1983-09-28 | Teijin Ltd | Preparation of flat yarn |
| US4606654A (en) * | 1983-12-06 | 1986-08-19 | Nippon Thompson Co., Ltd. | Cross roller bearing |
| US5071264A (en) * | 1969-11-28 | 1991-12-10 | Franke & Heydrich Kg | Rolling bearing |
| DE4243450A1 (en) * | 1992-12-22 | 1994-06-23 | Schaeffler Waelzlager Kg | Rolling bearing for radial and axial loads |
| CN201496401U (en) * | 2009-07-10 | 2010-06-02 | 安徽枞晨回转支承有限公司 | Microminiature precision-grade slewing bearing with cross rollers |
| CN202674003U (en) * | 2012-06-20 | 2013-01-16 | 上银科技股份有限公司 | Rolling bearing |
-
2013
- 2013-02-21 CN CN201310055772.0A patent/CN104006072B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5071264A (en) * | 1969-11-28 | 1991-12-10 | Franke & Heydrich Kg | Rolling bearing |
| JPS58163714A (en) * | 1982-03-24 | 1983-09-28 | Teijin Ltd | Preparation of flat yarn |
| US4606654A (en) * | 1983-12-06 | 1986-08-19 | Nippon Thompson Co., Ltd. | Cross roller bearing |
| DE4243450A1 (en) * | 1992-12-22 | 1994-06-23 | Schaeffler Waelzlager Kg | Rolling bearing for radial and axial loads |
| CN201496401U (en) * | 2009-07-10 | 2010-06-02 | 安徽枞晨回转支承有限公司 | Microminiature precision-grade slewing bearing with cross rollers |
| CN202674003U (en) * | 2012-06-20 | 2013-01-16 | 上银科技股份有限公司 | Rolling bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387069A (en) * | 2015-11-20 | 2016-03-09 | 洛阳轴研科技股份有限公司 | Crossed roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104006072B (en) | 2016-10-05 |
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