CN207080506U - A kind of robot biserial thin-walled seal ball bearing - Google Patents
A kind of robot biserial thin-walled seal ball bearing Download PDFInfo
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- CN207080506U CN207080506U CN201720408782.1U CN201720408782U CN207080506U CN 207080506 U CN207080506 U CN 207080506U CN 201720408782 U CN201720408782 U CN 201720408782U CN 207080506 U CN207080506 U CN 207080506U
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- ball bearing
- retainer
- inner ring
- outer ring
- seal
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Abstract
The utility model discloses a kind of robot biserial thin-walled seal ball bearing, the ball bearing includes：Inner ring, outer ring, steel ball, retainer and seal；The inner ring, outer ring and retainer are annular concentric structure；Two outer raceways have been arranged side by side in the outer ring；The inner ring is double inner ring structures, and an interior raceway is provided with each of which inner ring；The retainer is arranged between the outer ring and the inner ring；Alternatively distributed two row spherical packet hole is provided with the retainer；The steel ball is arranged in the spherical packet hole；The seal is arranged between the outer ring and the inner ring.Thin-walled seal ball bearing bearing capacity provided by the utility model is higher, service life is longer, security is higher, dynamic balance performance is more excellent, sealing effectiveness is more preferable.
Description
Technical field
The utility model belongs to bearing mechanical technical field, relates in particular to a kind of biserial robot thin-walled ball sealer
Bearing.
Background technology
Bearing（Bearing）It is a kind of important spare part in contemporary plant equipment.Its major function is support machinery rotation
Swivel, reduces the coefficient of friction in its motion process, and ensure its rotating accuracy.Rolling bearing is typically by outer ring, inner ring, rolling
Body and the part of retainer four composition.By the shape of rolling element, rolling bearing is divided into ball bearing and the major class of roller bearing two.
Thin-walled seal ball bearing is a kind of special bearing, it have uiform section, occupy little space, limit speed is high, can
Bear bidirectional load, high revolution positioning precision, it is anti-pollution the features such as.Due to special with These characteristics, thin-walled seal ball bearing
Suitable for the application scenario of robot.
Fig. 1 is the side sectional view of traditional thin-walled seal ball bearing.As shown in figure 1, the thin-walled seal ball bearing includes
It is made up of outer ring 1, inner ring 2, steel ball 3, retainer 4, seal 5.Wherein outer ring 1 refers to the outer ring of ball bearing, and inner ring 2 refers to ball bearing
Inner ring, steel ball 3 be standard rolling element.This design ensure that in bearing operation outer ring 1 can be certainly relative to inner ring 2
By rotating.In addition, the uiform section that the bearing has 12.7mm × 9.525mm designs, and the presence of steel ball 3 can reach machine
The space of device people and the requirement of rotating speed.
But mainly using single-row steel ball structure, eccentric design in traditional thin-walled seal ball bearing, this just makes such axle
Hold and the defects of low bearing capacity, discontinuity equalization, dynamic balancing difference be present.Due to its own design feature, in thin-walled ball sealer axle
Field is held, low carrying is the defects of being difficult to overcome.
In some current researchs, the bearing capacity of bearing is improved by the way that single-row steel ball is replaced with into Double-row ball.
Although the bearing capacity of this thin-walled seal ball bearing can be significantly improved by so doing, solving bearing capacity defect
Meanwhile bring new technical problem.In sectional dimension（12.7mm×9.525mm）In the case that fixation, steel ball size are constant,
Steel ball is not adjusted to the space of biserial；And after minor diameter steel ball is used, although steel ball can be adjusted to biserial,
But the new problem of retainer insufficient strength occurs again.
To sum up, single-row steel ball can not be directly replaced by by the optimization for traditional thin-walled seal ball bearing by simply
Double-row ball can be realized as.So thin-walled seal ball bearing still uses single-row eccentric steel ball structure at present.
Therefore, it is good to be badly in need of one kind dynamic balance performance in bearing high-speed rotation at present, and there is larger carrying energy again
The thin-walled seal ball bearing of power.
Utility model content
The defects of existing for existing thin-walled seal ball bearing, the utility model provide a kind of biserial thin-walled ball sealer axle
Hold.
According to one side of the present utility model, there is provided a kind of biserial thin-walled seal ball bearing, it is characterised in that the ball
Bearing includes：Inner ring, outer ring, steel ball, retainer and seal；
The inner ring, the outer ring and the retainer are loop configuration, and the inner ring, outer ring and the holding
Frame is arranged concentrically；
Two outer raceways have been arranged side by side in the outer ring, and described two outer raceways are biserial ditch shape structure；
Described two outer raceways are respectively arranged with towards the outer of the inner ring direction close to the side of the ball bearing end face
Raceway both sides are raised；The outer middle raceway that the centre of described two outer raceways is provided with towards the inner ring direction is raised；
The inner ring is double inner ring structures, and an interior raceway is provided with each of which inner ring；The interior raceway and institute
Outer raceway is stated to be correspondingly arranged；Raceway is set for the eccentric in above-mentioned two；
The interior raceway has the interior raceway towards the outer ring direction raised close to ball bearing end face side；
The retainer is arranged between the outer ring and the inner ring；The inward flange of the retainer and the inner ring are same
Side, the outward flange of the retainer and the outer ring homonymy；
Two row spherical packet holes are provided with the retainer, above-mentioned two row spherical packet hole is in be alternately distributed, the spherical packet
The central distribution in hole is on a circumference；
Both ends of the surface of the two row spherical packet hole respectively with the retainer intersect, and form pocket hole fore shaft；
The steel ball is arranged in the spherical packet hole；
Optionally, the seal is arranged between the outer ring and the inner ring, on the outside of the retainer both ends of the surface；Institute
Seal is stated to be used to seal the internal structure of the ball bearing.
According to an embodiment of the present utility model, in above-mentioned two row spherical packet hole, the ball in each of which row
The quantity in shape pocket hole is odd number.
According to another embodiment of the present utility model, the seal is the contact that steel skeleton combines with rubberizing
Formula seal.
According to another embodiment of the present utility model, the axial width of the steel skeleton is the steel ball size
0.10 ~ 0.11 times；
The radial thickness of the steel skeleton is 0.57 ~ 0.59 times of the steel ball size.
According to another embodiment of the present utility model, the both sides of the outer ring are provided with step trough, in institute
State and positioning R grooves are provided with interior raceway projection；
The step trough and the positioning R grooves are used to fix the seal.
According to another embodiment of the present utility model, the radial distance between the step trough and outer ring external diameter
It is 0.24 ~ 0.25 times of the ball bearing wall thickness；
The axial dimension of the step trough is 0.41 ~ 0.43 times of the steel ball size.
According to another embodiment of the present utility model, the radius of curvature of the positioning R grooves is steel ball size
0.032 ~ 0.034 times；
The axial spacing of the end face of the ball bearing of the positioning R grooves center of curvature and homonymy is the steel ball size
0.21 ~ 0.22 times.
According to another embodiment of the present utility model, the interior raceway is shaped as circular arc portion and line part
Split-phase combines；
The axial dimension of the circular arc portion is 0.39 ~ 0.41 times of the steel ball size；
The axial dimension of the straight line portion is 0.23 ~ 0.25 times of the steel ball size.
According to another embodiment of the present utility model, the diameter of the diameter of the spherical packet hole than the steel ball
Big 0.15mm ~ 0.20mm.
According to another embodiment of the present utility model, diameter and the inner ring internal diameter of the inward flange of the retainer
Between radial distance be 0.68 ~ 0.69 times of the steel ball size；
Radial distance between the outer peripheral diameter and outer ring external diameter of the retainer be the steel ball size 0.68 ~
0.69 times.
The design of single-row steel ball is changed over biserial by biserial thin-walled seal ball bearing provided by the utility model, makes two row steel balls
Bearing is guided jointly；Meanwhile by optimizing steel ball, raceway and the relation of retainer so that provided by the utility model
Thin-walled seal ball bearing not only increases bearing capacity, service life, security and the sealing effect of traditional thin-walled seal ball bearing
Fruit, and dynamic balancing is good when the biserial thin-walled seal ball bearing runs at high speed.
Brief description of the drawings
It is of the present utility model by reading the detailed description made to non-limiting example made with reference to the following drawings
Other features, objects and advantages will become more apparent upon：
Fig. 1 show the side sectional view of traditional thin-walled seal ball bearing；
Fig. 2 show a kind of side of an embodiment of biserial thin-walled seal ball bearing provided by the utility model
Face sectional view；
Fig. 3 show a specific reality of the retainer in a kind of biserial thin-walled seal ball bearing provided by the utility model
Apply the front view of mode；
Fig. 4 show a specific reality of the retainer in a kind of biserial thin-walled seal ball bearing provided by the utility model
Apply the side sectional view of mode；
Fig. 5 show an a kind of embodiment structure of biserial thin-walled seal ball bearing provided by the utility model
Schematic diagram.
Reference is as shown in below table：
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
Following disclosure provides many different embodiments or example is used for realizing different structure of the present utility model.For
Simplify disclosure of the present utility model, hereinafter the part and setting of specific examples are described.In addition, the utility model can
With repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself does not refer to
Relation between showing discussed various embodiments and/or setting.It should be noted that part illustrated in the accompanying drawings not necessarily press than
Example is drawn.The utility model eliminates the description to known assemblies and treatment technology and process to avoid being unnecessarily limiting this reality
With new.
Referring to Fig. 2 ~ Fig. 5, a kind of thin-walled seal ball bearing provided by the utility model includes：Inner ring 2, outer ring 1, steel ball 3,
Retainer 4 and seal 5.The inner ring 2, the outer ring 1 and the retainer 4 are loop configuration, and the inner ring 2,
Outer ring 1 and the retainer 4 are arranged concentrically.
Two outer raceways 11 have been arranged side by side in the outer ring 1, and described two outer raceways 11 are ditch shape structure.It is described two outer
Raceway 11 is respectively arranged with the outer raceway both sides projection 12 towards the inner ring direction close to the side of the ball bearing end face.It is excellent
Choosing, the radial distance between the outer raceway both sides projection 12 and ball bearing outer ring external diameter 14 be bearing wall thickness A 0.30 ~
0.32 times, such as：0.30 times, 0.31 times or 0.32 times.
The centre of described two outer raceways 11 is provided with the outer middle raceway projection 13 towards the inner ring direction.It is described outer
Radial distance between middle raceway projection 13 and the ball bearing outer ring external diameter 14 is 0.26 ~ 0.28 times of bearing wall thickness A, example
Such as：0.26 times, 0.27 times or 0.28 times.
The inner ring 2 is double inner ring structures, and an interior raceway 21 is provided with each of which inner ring 2；The interior raceway
21 are correspondingly arranged with the outer raceway 11；Raceway 21 is set for the eccentric in above-mentioned two.
The interior raceway 21 has the interior raceway projection 22 towards the outer ring direction close to ball bearing end face side.
Radial distance between the interior raceway projection 22 and the ball bearing inner race internal diameter 23 is 0.30 ~ 0.32 times of bearing wall thickness A, example
Such as：0.30 times, 0.31 times or 0.32 times.
Preferably, the circular arc portion that is shaped as of the interior raceway 21 is combined with straight line portion, wherein, the circular arc portion
Axial dimension be 0.39 ~ 0.41 times of the diameter of steel ball 3, such as：0.39 times, 0.40 times or 0.41 times；The straight line
Partial axial dimension is 0.23 ~ 0.25 times of the diameter of steel ball 3, such as：0.23 times, 0.24 times or 0.25 times.
The retainer 4 is arranged between the outer ring 1 and the inner ring 2；The inward flange of the retainer 4 with it is described interior
Enclose 2 homonymies, the outward flange of the retainer 4 and the homonymy of outer ring 1.Preferably, the retainer 4 uses brass or PEEK works
Engineering plastics（Polyether-ether-ketone resin）It is prepared.Further, since the density of PEEK engineering plastics is far smaller than the density of brass, can
The centrifugal force that bearing runs at high speed is effectively reduced, the limit speed of thin-walled seal ball bearing is lifted, is reached using single-row
The limit speed of the thin-walled seal ball bearing of steel ball design.Therefore, it is more highly preferred to, is prepared and protected using PEEK engineering plastics
Hold frame 4.
Preferably, the radial direction between the diameter of the inward flange of the retainer 4, i.e. retainer internal diameter 41 and inner ring internal diameter 23
Distance is 0.68 ~ 0.69 times of the diameter of steel ball 3, such as：0.68 times, 0.685 times or 0.69 times.Preferably, the guarantor
The outer peripheral diameter of frame 4 is held, i.e. radial distance between retainer external diameter 42 and outer ring external diameter 14 is the diameter of steel ball 3
0.68 ~ 0.69 times, such as：0.68 times, 0.685 times or 0.69 times.Preferably, the center circle circumferential spread of the retainer 4
Dp diameter is 0.82 ~ 0.83 times of the outer ring external diameter 14, such as：0.82 times, 0.825 times or 0.83 times.When retainer 4
Diameter in above-mentioned number range when, can keep ball bearing there is longer life while reach optimal work shape
State.
Preferably, the width of the retainer 4 is 0.38~0.42 times of the ball bearing width, such as：0.38 times,
0.40 times or 0.42 times.It is more highly preferred to, when the width of the retainer 4 is 0.4 times of the ball bearing width, ball bearing
Rotating speed, bearing strength, centrifugal force and component assembly space can reach most preferably.
Two row spherical packet holes 43 are provided with the retainer 4, the steel ball 3 is arranged in the spherical packet hole 43.It is excellent
Choosing, 0.48 ~ 0.52 times of a diameter of ball bearing wall thickness A of the steel ball 3, such as：0.48 times, 0.50 times or 0.52
Times.In order to effectively reduce steel ball 3 run at high speed caused by huge centrifugal force, and effectively reduce the friction inside ball bearing and mill
Damage, is obviously improved the limit speed of thin-walled seal ball bearing, it is preferred that the steel ball 3 uses beating steel GCr15 or silicon nitride
It is prepared by Si3N4 materials.In order to further lift effect, it is more highly preferred to, steel ball 3 is prepared using silicon nitride Si3N4 materials.
In order that the bearing capacity of ball bearing, service life, security and speed be attained by it is optimal, it is preferred that it is described
The single-row quantity of spherical packet hole 43 is odd number, and biserial spherical packet hole 43 is interspersed, as shown in Figure 4.
Preferably, the centre of sphere axial direction spacing of the biserial spherical packet hole 43 is 0.63 ~ 0.65 times of the diameter of steel ball 3, such as：
0.63 times, 0.64 times or 0.65 times.The central distribution of the spherical packet hole 43 is on a circumference, the circumference and retainer 4
The circumference of central distribution is identical.Both ends of the surface of the two row spherical packet hole 43 respectively with the retainer 4 intersect, and form pocket hole lock
Mouth 44, referring to Fig. 4.Preferably, the diameter of the spherical packet hole 43 is bigger 0.15mm ~ 0.20mm than the diameter of the steel ball 3, example
Such as：0.15mm, 0.17mm or 0.20mm.The utility model is to the diameter of spherical packet hole 43, the centre of sphere of biserial spherical packet hole 43
The selection of the odd number of axial spacing dimension and single-row spherical packet hole 43 limits, and can so make the installation of steel ball 3 more steady
Calmly, the operating efficiency of ball bearing is higher.
The seal 5 is arranged between the outer ring 1 and the inner ring 2, on the outside of the both ends of the surface of retainer 4；It is described
Seal 5 is used to seal the internal structure of the ball bearing.Preferably, the axial width size of the seal 5 is
0.29 ~ 0.31 times of the diameter of steel ball 3, such as：0.29 times, 0.30 times or 0.31 times.
Preferably, the contact seal part that the seal 5 is steel skeleton and rubberizing combines.Preferably, steel skeleton uses
High-quality stamping steel plate, and rubberizing is made of nitrile rubber.Wherein, the axial width of the steel skeleton is the diameter of steel ball 3
0.10 ~ 0.11 times, such as：0.10 times, 0.105 times or 0.11 times；The radial thickness of the steel skeleton is that the steel ball 3 is straight
0.57 ~ 0.59 times of footpath, such as：0.57 times, 0.58 times or 0.59 times.Preferably, the steel skeleton internal diameter and inner ring internal diameter
Radial distance between 23 is 0.34 ~ 0.36 times of bearing wall thickness A, such as：0.34 times, 0.35 times or 0.36 times.
In order to coordinate above-mentioned contact seal part 5, make its fixation more stable and firm, it is preferred that two in the outer ring 1
Side is provided with step trough 15, and positioning R grooves 24 are provided with the interior raceway projection 22；The step trough 15 and the positioning R
Groove 25 is used to fix the seal 5.
Preferably, the radial distance between the step trough 15 and outer ring external diameter 14 be the ball bearing wall thickness A 0.24 ~
0.25 times, such as：0.24 times, 0.245 times or 0.25 times；The axial dimension of the step trough 15 is the diameter of steel ball 3
0.41 ~ 0.43 times, such as：0.41 times, 0.42 times or 0.43 times.
Preferably, the radius of curvature of the positioning R grooves 24 is 0.032 ~ 0.034 times of the diameter of steel ball 3, such as：
0.032 times, 0.033 times or 0.034 times；The axle of the end face of the ball bearing of the center of curvature of positioning R grooves 24 and homonymy
It is 0.21 ~ 0.22 times of the diameter of steel ball 3 to spacing, such as：0.21 times, 0.215 times or 0.22 times.
To sum up, biserial thin-walled seal ball bearing provided by the utility model, passes through the design to retainer, Internal and external cycle raceway
Change, the design of single-row steel ball is changed over into Double-row ball, and the common guiding to ball bearing is realized by two row steel balls.Through practice
Show, the bearing capacity of thin-walled ball sealer provided by the utility model at least carries than the bearing capacity of traditional thin-walled seal ball bearing
It is high by 48%.In the case of real load identical, the service life of thin-walled seal ball bearing provided by the utility model is than tradition
The service life of thin-walled seal ball bearing at least improve 3.7 times.By the optimization design to seal, the utility model carries
The sealing effectiveness of the thin-walled seal ball bearing of confession has obtained significant raising.Therefore, biserial thin-walled provided by the utility model is close
Blocking bearing load carrying capacity is higher, service life is longer, security is higher, dynamic balance performance is more excellent, sealing effectiveness is more preferable.
Although it has been described in detail on example embodiment and its advantage, it should be understood that do not departing from essence of the present utility model
In the case of protection domain refreshing and defined in the appended claims, these embodiments can be carried out with various change, replace and repair
Change.For other examples, one of ordinary skill in the art, which should be readily appreciated that, to keep in scope of protection of the utility model
Meanwhile the order of processing step can change.
In addition, application of the present utility model be not limited to the technique of the specific embodiment described in specification, mechanism,
Manufacture, material composition, means, method and step.From disclosure of the present utility model, as one of ordinary skill in the art
Will readily appreciate that, for current technique that is existing or will developing later, mechanism, manufacture, material composition, means,
Method or step, the function or obtain substantially that wherein their execution are substantially the same with the corresponding embodiment of the utility model description
Identical result, they can be applied according to the utility model.Therefore, the appended claims for the utility model be intended to by
These techniques, mechanism, manufacture, material composition, means, method or step are included in its protection domain.
Claims (9)
1. a kind of robot biserial thin-walled seal ball bearing, it is characterised in that the ball bearing includes：Inner ring, outer ring, steel
Ball, retainer and seal；The inner ring, the outer ring and the retainer are loop configuration, and the inner ring, outer ring
It is arranged concentrically with the retainer；Two outer raceways have been arranged side by side in the outer ring, and described two outer raceways are biserial ditch shape knot
Structure；Described two outer raceways are respectively arranged with the outer raceway two towards the inner ring direction close to the side of the ball bearing end face
Side is raised；The outer middle raceway that the centre of described two outer raceways is provided with towards the inner ring direction is raised；The inner ring is
Double inner ring structures, an interior raceway is provided with each of which inner ring；The interior raceway is correspondingly arranged with the outer raceway；On
Two interior raceways are stated to be set for the eccentric；The interior raceway has towards the outer ring direction close to ball bearing end face side
Interior raceway is raised；The retainer is arranged between the outer ring and the inner ring；The inward flange of the retainer with it is described interior
Enclose homonymy, the outward flange of the retainer and the outer ring homonymy；It is provided with two row spherical packet holes on the retainer, above-mentioned two
Row spherical packet hole is in being alternately distributed, and the central distribution of the spherical packet hole is on a circumference；The two row spherical packet hole respectively with
The both ends of the surface of the retainer intersect, and form pocket hole fore shaft；The steel ball is arranged in the spherical packet hole；The seal is set
It is placed between the outer ring and the inner ring, on the outside of the retainer both ends of the surface；The seal is used for the ball bearing
Internal structure is sealed.
2. ball bearing according to claim 1, it is characterised in that in above-mentioned two row spherical packet hole, in each of which row
The quantity of spherical packet hole is odd number.
3. ball bearing according to claim 1, it is characterised in that the seal is the contact that steel skeleton combines with rubberizing
Formula seal.
4. ball bearing according to claim 3, it is characterised in that the axial width of the steel skeleton is the steel ball size
0.10 ~ 0.11 times；The radial thickness of the steel skeleton is 0.57 ~ 0.59 times of the steel ball size.
5. ball bearing according to claim 3, it is characterised in that the both sides of the outer ring are provided with step trough, in institute
State and positioning R grooves are provided with interior raceway projection；The step trough and the positioning R grooves are used to fix the seal.
6. ball bearing according to claim 5, it is characterised in that the radial distance between the step trough and outer ring external diameter
It is 0.24 ~ 0.25 times of the ball bearing wall thickness；The axial dimension of the step trough is the 0.41 ~ 0.43 of the steel ball size
Times.
7. ball bearing according to claim 5, it is characterised in that the radius of curvature of the positioning R grooves is steel ball size
0.032 ~ 0.034 times；The axial spacing of the end face of the ball bearing of the positioning R grooves center of curvature and homonymy is the steel ball
0.21 ~ 0.22 times of diameter.
8. ball bearing according to claim 1, it is characterised in that the interior raceway is shaped as circular arc portion and line part
Split-phase combines；The axial dimension of the circular arc portion is 0.39 ~ 0.41 times of the steel ball size；The axial direction of the straight line portion
Size is 0.23 ~ 0.25 times of the steel ball size.
9. ball bearing according to claim 1, it is characterised in that the diameter of the inward flange of the retainer and inner ring internal diameter
Between radial distance be 0.68 ~ 0.69 times of the steel ball size；The outer peripheral diameter of the retainer and outer ring external diameter
Between radial distance be 0.68 ~ 0.69 times of the steel ball size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408782.1U CN207080506U (en) | 2017-04-19 | 2017-04-19 | A kind of robot biserial thin-walled seal ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408782.1U CN207080506U (en) | 2017-04-19 | 2017-04-19 | A kind of robot biserial thin-walled seal ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080506U true CN207080506U (en) | 2018-03-09 |
Family
ID=61436120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720408782.1U Expired - Fee Related CN207080506U (en) | 2017-04-19 | 2017-04-19 | A kind of robot biserial thin-walled seal ball bearing |
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| Country | Link |
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| CN (1) | CN207080506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747594A (en) * | 2017-04-19 | 2018-03-02 | 山东吉恩纳机械工程技术有限公司 | A kind of robot biserial thin-walled seal ball bearing |
-
2017
- 2017-04-19 CN CN201720408782.1U patent/CN207080506U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747594A (en) * | 2017-04-19 | 2018-03-02 | 山东吉恩纳机械工程技术有限公司 | A kind of robot biserial thin-walled seal ball bearing |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 Termination date: 20210419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |