CN207212948U - A kind of full ball angular contact ball bearing of twin-lock mouth - Google Patents
A kind of full ball angular contact ball bearing of twin-lock mouth Download PDFInfo
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- CN207212948U CN207212948U CN201720729688.6U CN201720729688U CN207212948U CN 207212948 U CN207212948 U CN 207212948U CN 201720729688 U CN201720729688 U CN 201720729688U CN 207212948 U CN207212948 U CN 207212948U
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Abstract
It the utility model is related to a kind of full ball angular contact ball bearing of twin-lock mouth, a kind of full ball angular contact ball bearing of twin-lock mouth, including outer ring, steel ball and inner ring, the inwall of outer ring has outer ring raceway, outer ring fore shaft and outer ring inclined flange, the outer wall of inner ring has bear inner ring grooved railway and inner ring fore shaft, steel ball is covered with the raceway formed after outer ring raceway and bear inner ring grooved railway trap, and steel ball contacts rolling connection with outer ring raceway and bear inner ring grooved railway point respectively；The both ends of outer ring fore shaft connect one end and the outer ring inclined flange of outer ring raceway respectively, and outer ring inclined flange is that its edge diameter is more than its oblique straight flange with outer ring fore shaft junction diameter, and outer ring fore shaft is the cambered surface of depression；One end connection of inner ring fore shaft bear inner ring grooved railway corresponding with the other end up or down of outer ring raceway, inner ring fore shaft are that its edge diameter is less than its oblique straight flange with bear inner ring grooved railway junction diameter.The utility model structure is compacter, in light weight, and bearing capacity, stability and rigidity are further strengthened, and improve bearing life.
Description
Technical field
It the utility model is related to a kind of bearings with rolling contact, more particularly to a kind of full ball angular contact ball bearing of twin-lock mouth.
Background technology
The angular contact ball bearing being generally used on precision speed reduction device is made up of inner ring, outer ring, steel ball and retainer, bearing
Low velocity is operated in, under the working condition such as impact is big, heavy duty.As shown in figure 1, bearing working process is due to bearing larger axially load
Lotus Fa and radial load Fr, the frictional force between each part is larger, and bearing inner race, outer ring, steel ball, retainer drastically wear；And then
Also cause existing lubricating grease contaminated or environment temperature too high (more than 40 degree) causes lubricating grease accelerated ageing, so as to reduce axle
The service life held.In addition, retainer play a part of guide and isolate steel ball while, particularly in low-speed running
When, driving bearing retainer rotates again for the operating of steel ball, so as to cause steel ball and retainer to produce extra excessive friction, reduces axle
The transmission efficiency held and life-span.Under case of heavy load, bearing is born radially, axially and during torque load, and inside and outside circle can produce
Deflection, cause retainer stress deformation unstable wear.This is the protrusion of the bearing capacity difference of existing retainer angular contact ball bearing
Shortcoming.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of full ball angular contact ball bearing of twin-lock mouth, and raising is held
Loading capability, protection steel ball, convenient use and raising bearing life.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of full ball angular contact ball bearing of twin-lock mouth,
Including outer ring, steel ball, inner ring, the inwall of the outer ring has outer ring raceway, outer ring fore shaft and outer ring inclined flange, the inner ring
Outer wall has a bear inner ring grooved railway and inner ring fore shaft, and the steel ball is covered with what is formed after the outer ring raceway and the bear inner ring grooved railway trap
In raceway, the steel ball contacts rolling connection with the outer ring raceway and bear inner ring grooved railway point respectively；The outer ring fore shaft
Both ends connect one end of the outer ring raceway and the outer ring inclined flange respectively, and the outer ring inclined flange is that its edge diameter is big
The oblique straight flange of outer ring fore shaft junction diameter described in Yu Qiyu, the outer ring fore shaft are the cambered surface of depression；The inner ring fore shaft with
One end connection of the bear inner ring grooved railway corresponding to the other end up or down of the outer ring raceway, the inner ring fore shaft is its edge
Diameter is less than its oblique straight flange with bear inner ring grooved railway junction diameter；The outward flange vertical plane of the inner ring fore shaft protrudes from together
The outward flange vertical plane of outer ring described in side；The width C of the outer ring 1 is
Wherein, D is outer ring overall diameter, and d is inner ring interior diameter.
The beneficial effects of the utility model are：Structure without retainer, more steel balls can be loaded, have higher radial direction,
Axial carrying capacity, it is poor to solve existing bearing load carrying capacity, eliminate rubbing between retainer and steel ball and Internal and external cycle rib
Wipe, keep away except retainer deformation is impaired.Using twin-lock mouth and the angular contact ball bearing of full ball design, structure is compacter, carrying
Ability, stability and rigidity are further strengthened, and substantially increase bearing life.Outer ring fore shaft is assembling fore shaft, and outer ring fore shaft is
The cambered surface and outer ring inclined flange being outwards recessed are outer to be tilted towards, and avoid wedge angle during trap from colliding with steel ball；Coordinate outer ring with it is interior
Enclose width to set, outer ring and inner ring is formed at the inclined flange of outer ring open for entering for lubricating grease, so as to convenient to steel ball
Lubrication.Inner ring fore shaft uses inclined flange, reduces bearing weight, and avoid during use with precision speed reduction device pin tooth it is dry
Relate to.When being arranged on of the outward flange vertical plane of inner ring fore shaft is assembled to decelerator, can inside it be enclosed in narrow and small compact space
To the effect of positioning other parts such as Cycloidal Wheel, it is not necessary to increase pad isolation.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, a kind of full ball angular contact ball bearing of twin-lock mouth, the inwall of the outer ring also have outer ring flange, institute
The other end that outer ring flange is stated with the outer ring raceway is connected；The diameter of the outer ring flange is less than the straight of the outer ring inclined flange
Footpath.
Beneficial effect using above-mentioned further scheme is outer ring flange limitation steel ball sideslip.
Further, the full ball angular contact ball bearing of a kind of twin-lock mouth, the rib coefficient of the outer ring flange for 0.60 to
0.63。
Beneficial effect using above-mentioned further scheme is to reduce the thickness of outer ring flange, so as to mitigate the weight of bearing.
Further, a kind of full ball angular contact ball bearing of twin-lock mouth, the outer wall of the inner ring also have inner ring rib, institute
The other end that inner ring rib is stated with the bear inner ring grooved railway is connected；The diameter of the inner ring rib is more than the straight of the inner ring fore shaft
Footpath.
Beneficial effect using above-mentioned further scheme is inner ring rib limitation steel ball sideslip.
Further, the full ball angular contact ball bearing of a kind of twin-lock mouth, the rib coefficient of the inner ring rib for 0.61 to
0.65。
Beneficial effect using above-mentioned further scheme is to reduce the thickness of inner ring rib, so as to mitigate the weight of bearing.
Further, the full ball angular contact ball bearing of a kind of twin-lock mouth, the contact angle α of the steel ball for 38 °≤α≤
48°。
Beneficial effect using above-mentioned further scheme is under the conditions of actual load, less than actual maximum combined load F
Load angle β between bearing sagittal plane.Make the combination properties such as bearing load, life-span, operating, friction and wear more preferably.
Further, the full ball angular contact ball bearing of a kind of twin-lock mouth, the external diameter of the outer ring and the outer ring raceway
Diameter ratio is less than or equal to 1.05；The ratio between internal diameter of the diameter of the bear inner ring grooved railway and the inner ring is less than or equal to 1.05.
Beneficial effect using above-mentioned further scheme is that inner ring, outer ring use thin-wall construction, diminution bearing appearance and size,
Structure is compacter, improves bearing radiating condition, and Internal and external cycle is thinned and increases steel ball radius, make the increase of contact synthetic curvature from
And reduce contact stress and then improve bearing life.
Further, the song of the full ball angular contact ball bearing of a kind of twin-lock mouth, the outer ring raceway and the bear inner ring grooved railway
The difference of rate radius and the diameter ratio of the steel ball are 0.01-0.02.
Beneficial effect using above-mentioned further scheme is to ensure that there is identical fatigue life inner ring and outer ring, makes steel ball
It is equal with the Max.contact stress of bear inner ring grooved railway and outer ring raceway or be close.
Further, the song of the full ball angular contact ball bearing of a kind of twin-lock mouth, the outer ring raceway and the bear inner ring grooved railway
Rate radius is respectively 0.515 to 0.53 with the diameter ratio of the steel ball.
The beneficial effect of above-mentioned further scheme is used to be so that steel ball contacts with outer ring raceway and bear inner ring grooved railway for point；Protect
Demonstrate,prove the overall certain load carrying capacity of bearing；Bearing entirety contact stress is minimum, improves bearing integral fatigue life.
Further, a kind of full ball angular contact ball bearing of twin-lock mouth, the steel ball are moistened using aviation 7008-1 lubricating grease
It is sliding.
Beneficial effect using above-mentioned further scheme is to improve lubricating condition, disclosure satisfy that less than 100 DEG C environment make
With.
Brief description of the drawings
Fig. 1 is A-A cross section structure diagrams in the utility model Fig. 3；
Fig. 2 is mplifying structure schematic diagram at B in the utility model Fig. 1；
Fig. 3 is the utility model main structure diagram；
Fig. 4 is the outer ring cross section structure diagram of A-A in the utility model Fig. 3；
Fig. 5 is the inner ring cross section structure diagram of A-A in the utility model Fig. 3.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, outer ring, 2, steel ball, 3, inner ring, 11, outer ring raceway, 12, outer ring fore shaft, 13, outer ring inclined flange, 14, outer ring gear
Side, 31, bear inner ring grooved railway, 32, inner ring fore shaft, 33, inner ring rib.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
In description of the present utility model, it is to be understood that the orientation of the instruction such as term " on ", " under ", " interior ", " outer "
Or position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplification is retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In description of the present utility model, " multiple " are meant that two or more,
Limited unless otherwise clearly tool.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be directly connected to, can also be indirectly connected with by intermediary, can be two element internals connection or two
The interaction relationship of element.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in utility model.
Here for first choice it should be noted that " inside " is directed towards the direction in accommodation space center, " outside " is away from accommodating
The direction in space center.
Fig. 1 to Fig. 5 is referred to, the utility model provides a kind of twin-lock mouth full ball angular contact ball bearing, including outer ring 1, steel
Ball 2 and inner ring 3.The inwall of outer ring 1 has outer ring raceway 11, outer ring fore shaft 12 and outer ring inclined flange 13.The outer wall tool of inner ring 3
There are bear inner ring grooved railway 31 and inner ring fore shaft 32.Steel ball 2 is covered with the raceway formed after outer ring raceway 11 and the trap of bear inner ring grooved railway 31.Steel
Ball 2 contacts rolling connection with 31 points of outer ring raceway 11 and bear inner ring grooved railway respectively.The both ends of outer ring fore shaft 12 connect outer ring channel respectively
The one end in road 11 and outer ring inclined flange 13.Outer ring inclined flange 13 is that its edge diameter is more than itself and the junction of outer ring fore shaft 12
The oblique straight flange of diameter.Outer ring fore shaft 12 is the cambered surface of depression.Inner ring fore shaft 32 is corresponding with the other end up or down of outer ring raceway 11
Bear inner ring grooved railway 31 one end connection.Inner ring fore shaft 32 is that its edge diameter is less than itself and the junction diameter of bear inner ring grooved railway 31
Oblique straight flange.The outward flange vertical plane of inner ring fore shaft 32 protrudes from the outward flange vertical plane of homonymy outer ring 1.The width C of outer ring 1 is
Wherein, D is outer ring overall diameter, and d is inner ring interior diameter.
Specifically, outer ring 1, steel ball 2 and inner ring 3 are made using army's first steel ZGC15 materials.And ensure bearing through cold treatment
The stability of size.The height of inner ring 3 is more than bearing assembling height.Bearing assembling height is more than the height of outer ring 1.It is easy to lubricate
Flowing of the fat in bearing bore body, and can reduce the number of adjusting washer.
As shown in figure 1, the width for the outer ring 1 being calculated by formula (1) is less than the width of inner ring 3.Outer ring inclined flange 13
Projection of the edge on inner ring 3 is located in bear inner ring grooved railway 31.Outer ring 1 is set with the width of inner ring 2, makes outer ring 1 and inner ring 3 outside
Formed at circle inclined flange 13 open so as to the convenient lubrication to steel ball for entering for lubricating grease.
By implementation of the present utility model, the utility model uses the structure without retainer, can load more steel balls, have
Higher radially, axially bearing capacity simultaneously increases bearing rigidity, poor to solve existing bearing load carrying capacity, eliminate retainer with
Friction between steel ball and Internal and external cycle rib, keep away except retainer deformation is impaired., can be narrow when bearing is assembled into decelerator
In small compact space, the outward flange vertical plane of inner ring fore shaft 32 plays a part of positioning other parts such as Cycloidal Wheel, it is not necessary to
Increase pad isolation.During assembling trap, first inner ring 3 is assembled in other parts, then the installation steel in bear inner ring grooved railway 31
Ball 2, it is finally to assemble fore shaft and the contact sleeve of steel ball 2 on steel ball 2 with outer ring fore shaft 12 by outer ring 1.
In one embodiment, the inwall of outer ring 1 also has outer ring flange 14.Outer ring flange 14 is another with outer ring raceway 11
End connection.The diameter of outer ring flange 14 is less than the diameter of outer ring inclined flange 13.
Specifically, outer ring flange 14 and outer ring inclined flange 13 are located at circle distribution on the inwall of outer ring 1, the He of inner ring fore shaft 32
Inner ring rib 33 is located on the outer wall of inner ring 3, so outer ring flange 14, outer ring flange 13, inner ring fore shaft 32 and inner ring rib 33
All there is diameter.
Further, the rib coefficient of outer ring flange 14 is 0.60 to 0.63.
Specifically, the diameter that the rib coefficient of outer ring flange 14 is outer ring raceway 11 subtract outer ring flange 33 diameter it
Difference and the ratio of the diameter of steel ball 2.Bearing is formed under load effect between steel ball 2 and outer ring raceway 11 or bear inner ring grooved railway 31
Contact Ellipse.When the rib coefficient of outer ring flange 14 or inner ring rib 33 takes appropriate value, the border of Contact Ellipse can be made just
Fall at outer ring flange 14 or the edge of inner ring rib 33 well.Avoid surmounting rib, contact area forms stress concentration, bearing rotary
When internal friction abrasion aggravation, in unstable working condition, bearing can not normal use.It is therefore necessary to according to operating mode bar
Part chooses suitable rib coefficient, rationally designs the rib size of bearing.
In one embodiment, the outer wall of inner ring 3 also has inner ring rib 33.Inner ring rib 33 is another with bear inner ring grooved railway 31
End connection.The diameter of inner ring rib 33 is more than the diameter of inner ring fore shaft 32.
Further, the rib coefficient of inner ring rib 33 is 0.61 to 0.65.
Specifically, the diameter that the rib coefficient of inner ring rib 14 is inner ring rib 14 subtract bear inner ring grooved railway 31 diameter it
Difference and the ratio of the diameter of steel ball 2.
In one embodiment, the contact angle α of steel ball 2 is 38 °≤α≤48 °.Specifically, steel ball 2 and outer ring 1 and inner ring 3
The line of contact point and RADIAL angulation are contact angle.
As shown in figure 1, the axial load Fa and radial load Fr that are born during bearing working, the contact angle of steel ball 2
Less than actual maximum combined load F (axial load Fa and radial load Fr connected load are F) between bearing sagittal plane
Load angle β.Make the combination properties such as bearing load, life-span, operating, friction and wear more preferably.
In one embodiment, the diameter ratio of the external diameter of outer ring 1 and outer ring raceway 11 is less than or equal to 1.05.Inner ring ditch
The ratio between the diameter in road 31 and the internal diameter of inner ring 3 are less than or equal to 1.05.
Specifically, the external diameter of outer ring 1 and the diameter ratio of outer ring raceway 11 and the diameter of bear inner ring grooved railway 31 and inner ring is interior
The numerical value in the ratio between footpath, outer ring 1 and inner ring 3 can be made to form thin-wall construction, diminution bearing appearance and size, structure are compacter, change
The radiating condition of kind bearing.The wall thickness reduction of outer ring 1 and inner ring 3 increases the radius of steel ball 2 so that steel ball 2 respectively with outside
The synthetic curvature increase of raceway groove 11 and the contact of bear inner ring grooved railway 31 is enclosed, and then reduces contact stress, there is provided bearing life.
In one embodiment, the difference of the radius of curvature of outer ring raceway 11 and bear inner ring grooved railway 31 and the diameter ratio of steel ball 2 are
0.01-0.02, it is preferably 0.015.So as to ensure that inner ring 3 and outer ring 1 have identical fatigue life, make steel ball 2 respectively with inner ring
Raceway groove 31 is equal with the Max.contact stress of outer ring raceway 11 or is close.
In one embodiment, diameter ratio of the radius of curvature of outer ring raceway 11 and bear inner ring grooved railway 31 respectively with steel ball 2 is
0.515 to 0.53.
Specific radius of curvature is primarily used to describe the degree of curved change in somewhere on curve, it is special as：Circle
The former radius of curvature that upper each local degree of crook is just as is exactly the radius of the circle；Straight line is not bent, and straight line is at this
The radius of the tangent circle of point can be with arbitrarily large, so curvature is 0, therefore straight line does not have radius of curvature, or note radius of curvature is ∞.
So that the contact with outer ring raceway 11 and bear inner ring grooved railway 31 contacts steel ball 2 for point respectively, and then reduce rolling and rub
The frictional force of wiping；Ensure the overall certain load carrying capacity of bearing；Bearing entirety contact stress is minimum, and it is integrally tired to improve bearing
The labor life-span.
In one embodiment, steel ball 2 uses aviation 7008-1 grease lubrications.
So as to improve lubricating condition, the use of less than 100 DEG C environment disclosure satisfy that.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (10)
1. the full ball angular contact ball bearing of a kind of twin-lock mouth, it is characterised in that described including outer ring (1), steel ball (2) and inner ring (3)
The inwall of outer ring (1) has outer ring raceway (11), outer ring fore shaft (12) and outer ring inclined flange (13), the outer wall of the inner ring (3)
With bear inner ring grooved railway (31) and inner ring fore shaft (32),
The steel ball (2) is covered with the raceway formed after the outer ring raceway (11) and the bear inner ring grooved railway (31) trap, described
Steel ball (2) contacts rolling connection with the outer ring raceway (11) and the bear inner ring grooved railway (31) point respectively；
The both ends of the outer ring fore shaft (12) connect one end and the outer ring inclined flange (13) of the outer ring raceway (11) respectively,
The outer ring inclined flange (13) is that its edge diameter is more than its oblique straight flange with outer ring fore shaft (12) junction diameter, institute
State cambered surface of the outer ring fore shaft (12) for depression；
The inner ring fore shaft (32) bear inner ring grooved railway (31) corresponding with the other end up or down of the outer ring raceway (11)
One end connects, and the inner ring fore shaft (32) is that its edge diameter is oblique with the bear inner ring grooved railway (31) junction diameter less than it
Straight flange；The outward flange vertical plane of the inner ring fore shaft (32) protrudes from the outward flange vertical plane of outer ring described in homonymy (1)；
The width C of the outer ring (1) is
Wherein, D is outer ring overall diameter, and d is inner ring interior diameter.
A kind of 2. full ball angular contact ball bearing of twin-lock mouth according to claim 1, it is characterised in that the outer ring (1) it is interior
Wall also has outer ring flange (14), and the outer ring flange (14) is connected with the other end of the outer ring raceway (11)；
The diameter of the outer ring flange (14) is less than the diameter of the outer ring inclined flange (13).
A kind of 3. full ball angular contact ball bearing of twin-lock mouth according to claim 2, it is characterised in that the outer ring flange (14)
Rib coefficient be 0.60 to 0.63, wherein, the rib coefficient of the outer ring flange (14) is that the diameter of outer ring raceway (11) subtracts
Remove the ratio of the difference of the diameter of outer ring flange (14) and the diameter of steel ball (2).
4. the full ball angular contact ball bearing of a kind of twin-lock mouth according to claim 1, it is characterised in that outside the inner ring (3)
Wall also has inner ring rib (33), and the inner ring rib (33) is connected with the other end of the bear inner ring grooved railway (31)；
The diameter of the inner ring rib (33) is more than the diameter of the inner ring fore shaft (32).
A kind of 5. full ball angular contact ball bearing of twin-lock mouth according to claim 4, it is characterised in that the inner ring rib (33)
Rib coefficient be 0.61 to 0.65, wherein, the rib coefficient of the inner ring rib (33) is that the diameter of inner ring rib (33) subtracts
Remove the ratio of the difference of the diameter of bear inner ring grooved railway (31) and the diameter of steel ball (2).
6. according to a kind of full ball angular contact ball bearing of any one of claim 1 to 5 twin-lock mouth, it is characterised in that the steel
The contact angle α of ball (2) is 38 °≤α≤48 °.
7. according to a kind of full ball angular contact ball bearing of any one of claim 1 to 5 twin-lock mouth, it is characterised in that described outer
The diameter ratio of the external diameter and the outer ring raceway (11) that enclose (1) is less than or equal to 1.05；The diameter of the bear inner ring grooved railway (31)
It is less than or equal to 1.05 with the ratio between the internal diameter of the inner ring (3).
8. according to a kind of full ball angular contact ball bearing of any one of claim 1 to 5 twin-lock mouth, it is characterised in that described outer
The difference of radius of curvature and the diameter ratio of the steel ball (2) for enclosing raceway groove (11) and the bear inner ring grooved railway (31) are 0.01-0.02.
9. according to a kind of full ball angular contact ball bearing of any one of claim 1 to 5 twin-lock mouth, it is characterised in that described outer
The radius of curvature for enclosing raceway groove (11) and the bear inner ring grooved railway (31) be with the diameter ratio of the steel ball (2) respectively 0.515 to
0.53。
10. according to a kind of full ball angular contact ball bearing of any one of claim 1 to 5 twin-lock mouth, it is characterised in that the steel
Ball (2) uses aviation 7008-1 grease lubrications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720729688.6U CN207212948U (en) | 2017-06-21 | 2017-06-21 | A kind of full ball angular contact ball bearing of twin-lock mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720729688.6U CN207212948U (en) | 2017-06-21 | 2017-06-21 | A kind of full ball angular contact ball bearing of twin-lock mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212948U true CN207212948U (en) | 2018-04-10 |
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ID=61812059
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720729688.6U Active CN207212948U (en) | 2017-06-21 | 2017-06-21 | A kind of full ball angular contact ball bearing of twin-lock mouth |
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| CN (1) | CN207212948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681542A (en) * | 2019-02-01 | 2019-04-26 | 南京轴承有限公司 | Heavy automobile-used automatic aligning push type clutch separator |
-
2017
- 2017-06-21 CN CN201720729688.6U patent/CN207212948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681542A (en) * | 2019-02-01 | 2019-04-26 | 南京轴承有限公司 | Heavy automobile-used automatic aligning push type clutch separator |
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