CN103423297A - Self-maintenance rolling bearing and assembling method thereof - Google Patents
Self-maintenance rolling bearing and assembling method thereof Download PDFInfo
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- CN103423297A CN103423297A CN2012102693585A CN201210269358A CN103423297A CN 103423297 A CN103423297 A CN 103423297A CN 2012102693585 A CN2012102693585 A CN 2012102693585A CN 201210269358 A CN201210269358 A CN 201210269358A CN 103423297 A CN103423297 A CN 103423297A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims description 20
- 238000012423 maintenance Methods 0.000 title abstract description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011900 installation process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a self-maintenance rolling bearing. The self-maintenance rolling bearing comprises a roller ring and a first bearing sleeve ring (2) with two ribs (6, 8) which extend along a radial direction (32) to first rib height (34). The self-maintenance rolling bearing also comprises a second bearing sleeve ring. A first rib which extends along the radial direction to the first rib height is arranged at a first axial end of a roller path of the second bearing sleeve ring, and a second rib which extends along the radial direction to second rib height is arranged at a second axial end of the roller path of the second bearing sleeve ring. The second rib height is less than the first rib height. In assembling, the second bearing sleeve ring or the roller ring is heated to an assembling temperature form an environment temperature. At the assembling temperature, the second rib of the second bearing sleeve ring can move relatively to the roller ring along the axial direction because of second bearing sleeve ring or roller ring diameter variation caused by the temperature.
Description
Technical field
The present invention relates to how efficiently to assemble, can't harm transportation and rolling bearing especially roller bearing or tapered roller bearing are installed.
Background technique
In the rolling bearing of some type, need to take structural measure to prevent that rolling bearing from disintegrating and making bearing impaired until loss of function in transportation or installation process.Take roller bearing or tapered roller bearing as example, its bearing ring cannot be designed to two element types, because if adopt two component-based designs, just must, at the junction bearing load, therefore be necessary to design bearing inner race or the bearing outer ring that at least one side does not have rib.So just can by bearing inner race or bearing outer ring and rolling element be assembled together or with another bearing ring, separate respectively.
But the danger that exists bearing likely to disintegrate in the process of assembling or transportation bearing, namely rolling element may separate with inner ring or outer ring, and this may cause destroying bearing or hinder assembling.There is no the rolling element of retainer if use, or take the roller bearing shown in accompanying drawing 1 as example, there is rib iff inner ring in both sides, and use a retainer of guiding simultaneously below the bearing pitch circle, especially there will be problems.
Usually prevent that by with bearing ring, separating the additional mechanical parts of producing bearing from disintegrating in this case up to now.These parts are installed after running in bearings, are disintegrated to prevent bearing.Take that one-sided there is no the roller bearing outer ring of rib be example, with the right angle circlip of the groove engagement of outer ring, can prevent the outer ring slippage from cylindrical roller again of having aimed at.Do not use the right angle circlip just can't accomplish, because outer ring one side does not have rib ability running in bearings.
Use optional feature can make design cost increase, and can limit the flexibility of selecting available rolling bearing, for example, when for the former of fund aspect thereby must adopt standardized component the time, for example common right angle circlip, O shape enclosed or the sawtooth circle on the market.Thereby German patent DE 10214468B4 has described a kind of method of each assembly being carried out to the easy running in bearings of temperature adjustment processing.
Summary of the invention
Be necessary to provide more flexible, can in transportation or installation process, with more effective mode and method, prevent the rolling element type of disintegrating, and a kind of method of assembling this type of rolling element is provided.
Therefore some embodiments of the present invention have the first rib of a routine at least one side of one of them bearing ring of rolling bearing, at opposite side, have so-called second " miniature rib ".So-called miniature rib, refer to bearing ring flange and be significantly less than conventional rib at the rib height radially extended.
In some embodiments of the invention, select such geometrical shape, make different thermal expansion or contraction equilibrium or the compensation that can pass through the material of bearing ring or roller holder of envelope circular diameter from the envelope circular diameter in the hole of miniature rib of rolling element.Ring therefore also for the rib diameter adaptation raceway diameter of bearing ring.In some embodiments of bearing outer ring, raceway diameter and bearing ring flange diameter ratio are between 1.001～1.1 or 1.005～1.05.In some embodiments of bearing inner race, raceway diameter and bearing ring flange diameter ratio are between 0.9～0.99 or 0.95～0.995.
If the outer ring of roller bearing for example is assemblied on the cylindrical roller be arranged within inner ring rib, outer ring suitably can be heated to fitting temperature from ambient temperature, by thermal expansion, make the miniature rib diameter of outer ring be greater than the envelope circular diameter of roller ring.Can cross the roller ring in mobile outer ring under heated condition.After outer ring cools down, second rib (miniature rib) can prevent that bearing from disintegrating.Except the heating outer ring, can also cooling roller ring.
This type of rolling bearing has rolling element ring and a bearing ring, and this bearing ring has the first rib extended with the first rib height radially on an axial end of its raceway.This rib is in the past also referred to as the standard rib, and known bearing ring flange is as broad as long.But bearing ring has the second rib extended with obviously much smaller rib height radially on another axial end of raceway.
In certain embodiments, as a supplement or replacement scheme, the second rib after improving can be arranged on bearing inner race.Or heating rolling element ring is assembled then or cooling inner ring.
Embodiment's of the present invention advantage is, does not need for example optional feature of circlip and so on, can make bearing keep stable in transportation or installation process.So just make taking up room of kind of bearings be less than traditional bearing, because " miniature rib " is less than in axial required space the traditional rib that has circlip slot and assembled circlip.In addition, the bearing geometrical shape can also be freely determined fully, the usability of circlip or O shape circle or similar insurance institution needn't be scrupled.
Some embodiments of the present invention also have and can before utilizing heating or cooling the assembling, rib be placed on to the geometrical shape on the rolling element ring between two parties in the side of the second rib that has reduced the rib height in addition.In order to achieve this end, the height of the second rib reduces continuously until the edge of bearing ring (axial end).Automatic centering in the time of can making like this bearing ring on being positioned over the rolling element ring, thus make input minimum energy required in bearing ring temperature adjustment processing procedure, because only need change with minimum amplitude the diameter of bearing ring or rolling element ring.In addition, these embodiments also are furnished with two ribs that reduced the rib height, one of them rib or two ribs all have the rib height reduced continuously, thus make the bearing ring can automatic centering.
In the embodiment of assembly method of the present invention, prepare at first at ambient temperature first bearing ring and be arranged in the rolling element ring within clutch shaft bearing lasso rib.Prepare at ambient temperature in addition second bearing ring, this bearing ring has first a common rib on the first axial end of its raceway, and have improved second rib (miniature rib) on the second axial end of its raceway, its rib height axially is being significantly less than the rib height of the first rib.
If assemble second bearing ring, can carry out the temperature adjustment processing to it, make it from ambient temperature, reach fitting temperature, under fitting temperature, the second rib of the second bearing ring changes and can move with respect to the rolling element ring because temperature has caused the diameter of bearing ring.Second rib by the axial movement of bearing lasso crossed the rolling element ring, until the rolling element ring is positioned within first and second ribs of the second bearing ring, realizes assembling.There is the rib to heart effect if use, can or afterwards rib be placed on the rolling element ring of level before temperature adjustment is processed, due to can automatic centering, can under Action of Gravity Field, slip over the rolling element ring without further adjustment, thereby complete assembling.
In available cooling procedure subsequently, the diameter of the second bearing ring or rolling element ring reduces again, makes second rib of the second bearing ring can prevent that bearing from disintegrating.
The accompanying drawing explanation
Explain preferred embodiments more of the present invention below with reference to accompanying drawing.Relevant drawings is as follows:
Accompanying drawing 1 illustrates the sectional drawing of traditional roller bearing;
Accompanying drawing 2 illustrates the sectional drawing according to a kind of embodiment of roller bearing of the present invention; And
Accompanying drawing 3 illustrates a kind of embodiment according to rolling bearing assembly method of the present invention.
Embodiment
Accompanying drawing 1 is depicted as the sectional drawing that utilizes the right angle circlip to prevent the traditional roller bearing of disintegration.In the situation that shown in accompanying drawing 1, bearing inner race 24 not only has the first rib 6 vertically on the first end of its raceway, and has the second rib 8 on one end of the opposite of its raceway.Within rolling element or cylindrical roller 10 are arranged in to rib 6 and 8.Bearing outer ring 12 only has a rib 14 on first axial end of its raceway, on one end of the opposite of raceway, there is no rib, in order to can install or assemble bearing.In the example shown in accompanying drawing 1, retainer 16 is directed below pitch circle.At this, the ideal circle that the cylindrical roller center can be formed when bearing element is as pitch circle.The desirable radius that therefore can draw pitch circle according to symmetry axis 18 and the distance between the bearing symmetry axis of cylindrical roller 10, the symmetry axis 18 that the bearing symmetry axis of not drawing in accompanying drawing is parallel to cylindrical roller 10 extends.
The shortcoming of this protected-type is, must adopt an optional feature, must adopt right angle circlip 22 or similar structural measure to prevent that bearing from disintegrating.This will cause extra storage and logistics cost, also can improve on the other hand this type of layout axial 4 take up room.Whole bearing size, especially available raceway diameter also depends on whether can buy on the market suitable circlip in addition.
Accompanying drawing 2 is depicted as a kind of embodiment of bearing of the present invention, its outer ring 12 has two ribs, first rib 14 is " the standard ribs " that can bear axial force, and second rib can guarantee the maintenance function of roller ring or rolling element 10 rings as miniature rib 30.Accompanying drawing 2 is depicted as a kind of embodiment's of rolling bearing sectional drawing, the same with the sectional drawing in accompanying drawing 1.Therefore view, especially bearing inner race 2, cylindrical roller 10 and the retainer 16 of this view respective figure 1 all are equivalent to the parts shown in accompanying drawing 1, therefore no longer these parts are repeated.In addition, function class like or identical parts all have and reference character the same in accompanying drawing 1.Therefore following discuss only limit to and accompanying drawing 1 shown in difference between bearing, especially only limit to also to have the bearing ring 12 of the second rib after improvement, be exactly outboard bearing lasso 12 in the present embodiment.
The rolling bearing of accompanying drawing 2 illustrated embodiments has rolling element 10 (being cylindrical roller at this) ring, also has in addition bearing ring 12, this bearing ring has radially 32 ribs 14 that extend with the first rib height 34 (y) on the first axial end of its raceway 36, described bearing ring 12 also has miniature rib 30 (the second rib of bearing ring 12) on the second axial end of its raceway, this miniature rib is with radially 32 extensions of the second rib height 38 (x), and the second rib height 38 is significantly less than the rib height 34 of rib 14.
For example in assembly process, can heat like this outboard bearing lasso 12, until rib diameter 40 becomes and is greater than the external envelope diameter of a circle of rolling element 10 rings because of outer ring 12 thermal expansions.Once this situation appears, just can so that outer ring 12 axial 4 ground to the left cross rolling element 10 rings and move at accompanying drawing 1 middle finger, until bearing ring 12 is in its end position.Obviously, if other geometrical shape also can move in the opposite direction.End position is characterised in that, rolling element 10 is between two ribs 14,30 of outboard bearing lasso 12, thereby makes between first rib 14 and miniature rib 30 of rolling element 10 rings in bearing ring 12.After bearing outer ring 12 cools down, rib diameter 40 is less than the external diameter of the external envelope circle of rolling element 10 rings again, makes rolling element 10 be blocked by miniature rib 30, thereby can effectively prevent that bearing from disintegrating.
Above-mentioned rib diameter 40 refers to the rib edge of bearing inboard and the distance between the respective edges on opposite radially.The external envelope diameter of a circle refers to the rolling element envelope surface that puts relatively in the bearing outside or the distance between the boundary face equally.
Obviously, can be for geometrical shape, especially second rib 30 of the existing any adaptive rib of the geometric condition geometrical shape of miniature rib namely.The second rib height 38 of the second rib 30 is at least little by 50% than the rib height 34 of the first rib 14 in some embodiments of the invention, to guarantee above-described function.The second rib height 38 is less than 10% of the first rib height 34 in other embodiments, even is less than 1%.
The height of the miniature rib 30 of expressing with absolute number in some embodiments of the invention is less than 250 μ m, even is less than in other embodiments 150 μ m.The rib diameter 40 of miniature rib 30 is less than 250 μ m with the external envelope circular diameter of rolling element 10 rings in other embodiments, is less than 150 μ m in other embodiment.Obviously, all above-mentioned sizes all relate to ambient temperature, suppose that the design environment temperature of all parts is all identical.Although accompanying drawing 2 is depicted as retainer 16 directed a kind of embodiment below the bearing pitch circle, in alternative embodiment, can save retainer fully.
Bearing ring with two different heights ribs can be equally also the inner ring 2 of bearing.For example bearing outer ring 12 is furnished with two identical ribs in this case, and bearing inner race 2 has the rib of above-mentioned different heights.Adopt this design also can produce above-described assembling and structural advantages and method.In addition, in the embodiment who has improved bearing inner race 2, also can use and not use retainer, especially can use retainer directed outside the bearing pitch circle.
In addition, also use in other embodiments other rolling element as cylindrical roller.Other embodiment for example can use tapered roller or steel ball as rolling element.Also can use to there is radially the rib extended with the first rib height and have on the second axial end of raceway on the first axial end of its raceway and radially using bearing ring that the second rib that the second rib height extends and the second rib height be significantly less than the first rib height as the bearing inner race in tapered roller bearing or angular contact ball bearing or bearing outer ring, in order to bring into play described advantage here.
So just can be by the embodiment of bearing of the present invention for example, for example, for very different application forms, the bearing of motor, the gear drive of truck engine or motorcar engine.In addition, due to structural former thereby can't or not wish to use split type bearing ring and should in transportation or installation process, prevent under all situations that bearing disintegrates all embodiments of suitable use bearing of the present invention.
Obviously, not necessarily leave no choice but heat parts to be installed and produce required diameter difference when assembling, also can cooling another parts.In the embodiment shown in Figure 2, except can heated mandrel bearing outer-ring 12, also can reduce its diameter by cooling rolling element 10 rings.If miniature rib is placed in to the configuration structure on bearing inner race, cooling bearing inner ring when mounted, and/or heating rolling element ring.Generally speaking, must carry out the temperature adjustment processing to one of them parts and make it from ambient temperature (initial temperature), reach fitting temperature, under fitting temperature, the second rib of the second bearing ring (miniature rib) is because the diameter that temperature causes changes and can axially move with respect to the rolling element ring.
Also have the shape of miniature rib 30 shown in accompanying drawing 2, this shape can more easily be installed outboard bearing lasso 12 by the automatic centering effect of bearing outer ring.In order to realize this purpose, the diameter of miniature rib 30 increases until the axial end of bearing continuously to a side of raceway 36 dorsad.When thereby the diameter of rib 30 is greater than the envelope circular diameter of rolling element 10 rings, automatic centering when bearing outer ring can be seated on rolling element 10 in assembly process, thus only need change with minimum amplitude the diameter of outer ring 12 or rolling element 10 rings.
In order to realize this centering effect, the rib height of the second rib 30 is in certain embodiments to reduce with respect to axial 4 rotational symmetric cone forms, the outer surface of cone and axial 4 forms and to be less than 20 ° or be less than the cone angle 42 of 15 °, and is preferably formed the cone angle of about 10 °.
So only need change rib diameter with minimum amplitude, can be by the minimal time of heating or cooling associated components, thus can assemble as early as possible.
Obviously, can use technical measures arbitrarily to be heated or be cooling.For example can utilize electromagnetic radiation or induction mode to be heated.Parts to be heated can also be connected with circuit, make the resistance of parts itself can play heat effect.Can also prepare before parts are assembled, in externally oil bath, water-bath or other bath of liquid by its preheating.Can carry out in any way equally coolingly, for example can utilize dipping bath, liquid nitrogen or other liquefaction or cryogenic gas to carry out cooling.
Accompanying drawing 3 is depicted as a kind of embodiment of rolling bearing assembly method, roll to form comprise axial rings around rolling element ring, the clutch shaft bearing lasso with two ribs and the second bearing ring.
At first at ambient temperature prepare the second bearing ring in preparation process 50, this bearing ring has and radially with the first rib height, is extending, having the first rib of the first rib diameter on the first axial end of its raceway, and have on the second axial end and radially with the second rib height, extending the second rib with second rib diameter, the second rib height is less than the first rib height.
Prepare at ambient temperature the clutch shaft bearing lasso and be arranged in the rolling element ring within its rib in preassembly step 52.
Process in 54 processes and the second bearing ring to be carried out to temperature adjustment process and make it from ambient temperature, reach fitting temperature in temperature adjustment, under fitting temperature, the second rib of the second bearing ring is because the diameter that temperature causes changes and can axially move with respect to the rolling element ring.
In installation step 56, axially the second rib of mobile the second bearing ring is crossed the rolling element ring, until within the rolling element ring is in the first and second ribs of bearing ring.
Then can select to carry out temperature adjustment treatment step again, make all parts all get back to the ambient temperature that bearing can not disintegrate.
List of numerals
2 bearing inner races
4 is axial
6 first ribs
8 second ribs
10 rolling elements
12 bearing rings/bearing outer ring
14 ribs
16 retainers
18 symmetry axis
20 grooves
22 right angle circlips
30 miniature ribs
32 radially
34 first rib height
36 raceways
38 second rib height
40 rib diameters
42 angles
50 preparation process
52 preassembly steps
54 temperature adjustments are processed
56 installation step
Claims (10)
1. the rolling bearing with the ring be comprised of rolling element (10) comprises:
Clutch shaft bearing lasso (2), have two ribs (6,8) that radially extend with the first rib height (34) (32); And
The second bearing ring (12), this bearing ring has the first rib (14) extended with the first rib height (34) along described radially (32) on first axial end of its raceway (36), and there is the second rib (30) extended with the second rib height (38) along described radially (32) on the second axial end of described raceway (36), wherein, described the second rib height (38) is less than described the first rib height (34).
2. rolling bearing according to claim 1, is characterized in that, described the second rib height (38) is less than 50% of described the first rib height (34), preferably is less than 10%, and particularly preferably is less than 1%.
3. rolling bearing according to claim 1 and 2, is characterized in that, the rib height of described the second rib (30) reduces until the axial end of described bearing ring (12) continuously in a side of described raceway dorsad (36).
4. rolling bearing according to claim 3, it is characterized in that, the rib height of described the second rib (30) to be to reduce with respect to axial (4) rotational symmetric cone form, and the outer surface of described cone and described axially (4) formation are less than 20 °, preferably are less than 15 ° and particularly preferably be approximately the angle (42) of 10 °.
5. according to the described rolling bearing of any one in claim 1 to 4, it is characterized in that, described bearing ring (12) is bearing outer ring, and the rib diameter (40) of described the second rib (30) is less than 250 μ m than the little numerical value of external envelope diameter of a circle of the ring consisted of described rolling element (10) at ambient temperature, preferably is less than 150 μ m.
6. rolling bearing according to claim 5, is characterized in that, described rolling bearing also has retainer directed below the pitch circle of described bearing (16).
7. according to the described rolling bearing of any one in claim 1 to 4, it is characterized in that, described bearing ring (12) is bearing inner race, and the rib diameter of described the second rib is less than 250 μ m than the large numerical value of interior envelope circular diameter of the described ring consisted of rolling element (10) at ambient temperature, preferably is less than 150 μ m.
8. rolling bearing according to claim 7, is characterized in that, described rolling bearing also has retainer directed above the pitch circle of bearing (16).
9. according to the described rolling bearing of any one in claim 1～8, it is characterized in that, described rolling element is cylindrical roller (10) or tapered roller.
10. the assembly method of a rolling bearing, described rolling bearing comprises that axial rolling element (10) ring, one have two at the rib (6 that radially extends with the first rib height (34) (32), 8) clutch shaft bearing lasso (2) and second bearing ring (12), described method comprises:
Prepare at ambient temperature (50) second bearing rings (12), this bearing ring has radially (32) and extends, has first rib (14) of the first rib diameter with the first rib height (34) on first axial end of its raceway (36), and have radially (32) and extend, have second rib (30) of the second rib diameter (30) with the second rib height (38) on the second axial end, described the second rib height (38) is less than described the first rib height (34);
At room temperature prepare (52) clutch shaft bearing lasso (2), this bearing ring is had and be arranged in described rolling element (10) ring within its rib (6,8);
Described the second bearing ring (12) or described rolling element (10) ring are carried out to temperature adjustment processing (54) makes it from ambient temperature, reach fitting temperature, under fitting temperature, the diameter of second rib (30) of described the second bearing ring (12) described the second bearing ring (12) or described rolling element (10) ring because temperature causes change and vertically (4) with respect to described rolling element (10) ring, move;
The second rib (30) along described axially (4) mobile the second bearing rings (12) is crossed described rolling element (10) ring, until within described rolling element (10) ring is in described first rib (14) and described the second rib (30) of described the second bearing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102693585A CN103423297A (en) | 2012-05-15 | 2012-05-15 | Self-maintenance rolling bearing and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102693585A CN103423297A (en) | 2012-05-15 | 2012-05-15 | Self-maintenance rolling bearing and assembling method thereof |
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| CN103423297A true CN103423297A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102693585A Pending CN103423297A (en) | 2012-05-15 | 2012-05-15 | Self-maintenance rolling bearing and assembling method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151254A (en) * | 2016-08-17 | 2016-11-23 | 常州市武进长江滚针轴承有限公司 | Hot type needle bearing |
| CN106351967A (en) * | 2016-08-31 | 2017-01-25 | 洛阳轴研科技股份有限公司 | Angular contact ball bearing assembling and sleeving method |
| CN110953248A (en) * | 2019-12-25 | 2020-04-03 | 河南科技大学 | Cylindrical roller bearing |
-
2012
- 2012-05-15 CN CN2012102693585A patent/CN103423297A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151254A (en) * | 2016-08-17 | 2016-11-23 | 常州市武进长江滚针轴承有限公司 | Hot type needle bearing |
| CN106351967A (en) * | 2016-08-31 | 2017-01-25 | 洛阳轴研科技股份有限公司 | Angular contact ball bearing assembling and sleeving method |
| CN110953248A (en) * | 2019-12-25 | 2020-04-03 | 河南科技大学 | Cylindrical roller bearing |
| CN110953248B (en) * | 2019-12-25 | 2021-06-15 | 河南科技大学 | Cylindrical roller bearing |
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