CN206958091U - Harmonic speed reducer flexible bearing - Google Patents
Harmonic speed reducer flexible bearing Download PDFInfo
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- CN206958091U CN206958091U CN201720726240.9U CN201720726240U CN206958091U CN 206958091 U CN206958091 U CN 206958091U CN 201720726240 U CN201720726240 U CN 201720726240U CN 206958091 U CN206958091 U CN 206958091U
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- flexible bearing
- speed reducer
- harmonic speed
- outer ring
- bearing
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Abstract
A kind of harmonic speed reducer flexible bearing, inside and outside circle including flexible bearing, the steel ball being placed in retainer, the inner surface of the flexible bearing is stairstepping, the left and right side of inner surface internal diameter is different, and the semidiameter on the left and right side of inner surface internal diameter is h.Flexible bearing in harmonic speed reducer, can be because load is uneven to produce certain inclination and buckling deformation after being installed within flexbile gear.Inner surface, the endoporus of the flexible bearing outer ring of the design, arranged on left and right sides internal diameter is of different sizes, radial rigidity is different, its suffered bearing capacity is different simultaneously, therefore identical radial deformation is produced, the flexible bearing of this special construction can solve or mitigate because load it is uneven caused by tilt, buckling deformation, the problem being deformed because the abrasion of flexible bearing outer ring is uneven always for a long time be present so as to solve, solve and extend the transmission accuracy and transmission efficiency of flexible bearing, greatly improve the service life of harmonic speed reducer.
Description
Technical field
A kind of bearing of special construction is the utility model is related to, a kind of harmonic speed reducer particularly used in " robot "
Flexible bearing.
Background technology
Harmonic speed reducer is a kind of advanced, accurate decelerator, and because of small volume, light weight, return difference be small, transmission efficiency,
The advantages such as accurate position control are easily achieved, extensive use is obtained in robot precision optical machinery field.With with industrial machine
People etc. are the rise of the intelligence manufacture of core, and the robot of various uses is had been used in each field of human needs, and flexible shaft
Hold, flexbile gear is vital part and consumable accessory in harmonic speed reducer, precision failure and fatigue failure often occurs prior to other parts.
Because flexbile gear is thin-wall tubular structure, flexible bearing is after flexbile gear is loaded, and bearing outer ring and flexbile gear is are interference fitted, work
A small amount of deformation is often produced when making, causes flexible bearing less in the lateral wearing of flexbile gear opening one after long-term work, and another side grinding
Damage larger, transmission accuracy can be reduced by wearing big place, so as to reduce flexbile gear and flexible bearing or even whole harmonic speed reducer
Precision, transmission efficiency and service life, the problem of this is anxious to be resolved.
Patent No. CN201510793044.9 " harmonic speed reducer that elastic washer is carried between flexible bearing and flexbile gear " is just carried
A kind of flexbile gear inner surface and flexible bearing outer ring outer surface material of efficiently reducing has been supplied to be advantageous to because of the abrasion of interference fit
Vibration damping, it is easy to assemble, so as to improve the service life of harmonic speed reducer.
The content of the invention
Technical problem to be solved in the utility model is：A kind of harmonic speed reducer flexible bearing is provided, bearing capacity is strong,
Flexible height is used cooperatively with the flexbile gear on harmonic speed reducer, solve for a long time flexible bearing because of the uneven generation of outer ring abrasion
Endurance failure, precision deterioration problem, so as to greatly improve the transmission accuracy of flexible bearing and harmonic speed reducer, transmission efficiency
And service life.
The technical scheme in the invention for solving the above technical problem is：A kind of harmonic speed reducer flexible bearing, including
The inside and outside circle of flexible bearing, the steel ball being placed in retainer, the inner surface of the flexible bearing are stairstepping, table in outer ring
Internal diameter left and right side in face is different, and the semidiameter on the left and right side of inner surface internal diameter is h.
Compared with prior art, the utility model has the advantage of：Because the outer ring of many deep groove ball bearings can be left and right two
While by different load, certain inclination or buckling deformation can be produced because of the uneven of load.In harmonic speed reducer
Flexible bearing, can be because load is uneven to produce certain inclination, as shown in Figure 3 after being installed within flexbile gear.The design's
Inner surface, the endoporus of flexible bearing outer ring, arranged on left and right sides internal diameter are of different sizes.It is stairstepping, therefore its suffered bearing capacity is not
Together, the flexible bearing of this special construction can mitigate because load it is uneven caused by tilt, buckling deformation, so as to solve for a long time with
Come existing flexible bearing outer ring always and wear uneven phenomenon, that is, solve and extend the transmission accuracy and biography of flexible bearing
In the dynamic life-span, greatly improve the service life of harmonic speed reducer.
Brief description of the drawings
Fig. 1, structural representation of the present utility model.
Fig. 2, use state reference chart of the present utility model.
Fig. 3, flexbile gear opening cause the unbalance stress of flexible bearing（Prior art）.
Embodiment
Embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
Flexible bearing is very special rolling bearing, and its bearing width is very narrow, and the wall thickness of outer ring 1 is very thin, and inner ring 6 is forced
Deformation, and flexbile gear 7 is thin cylinder, and outer ring 1 and the interference fit of flexbile gear 7 of flexible bearing load in flexbile gear, after work bearing and
Flexbile gear can often produce a small amount of deformation, as shown in Figure 3.
Flexible bearing is mainly less in one lateral wearing of opening of flexbile gear 7, and another lateral wearing is larger, according to this feature to soft
The structure of property bearing is improved, optimized, and the structure of the inner surface endoporus of outer ring 1 is changed, is modified to the left side 2, the right 3
Both sides inner surface internal diameter differs, asymmetric stairstepping, and because left and right side internal diameter is different, therefore radial rigidity is different, from
And the left and right identical that will produce deforms in the case where outer ring is by left and right different load.
As 3 rigidity on the right of the small one side of inner surface internal diameter are larger, larger radial load can be resisted, therefore make caused by it
Deformation（I.e. diameter reduces）It is similar with the left side 2, as shown in figure 1, so as to mitigate or completely solve inclination shown in Fig. 3,
Warp deformation state, that is, mitigate or solve left and right side 2,3 and wear different situations, extend flexible bearing, flexbile gear
Transmission accuracy, transmission efficiency and service life, as shown in Figure 2.
The semidiameter on the left and right side 2,3 of the inner surface internal diameter of bearing outer ring 1 is h, true according to different size of design bearing
It is fixed.
0.4B>h>0.02B, B be flexible bearing outer ring 1 width, retainer 4 should bearing outer ring internal diameter it is larger one
Side loads, and steel ball 5 is placed in retainer 4.
In use, the larger left side 2 of the internal diameter of outer ring 1 in this flexible bearing and flexbile gear 7 side that is open is equidirectional, Qi Tahe
The installation of flexible bearing is identical, i.e., the outer ring 1 of flexible bearing is interference fitted with the inner surface of flexbile gear 7, as shown in Figure 2.It is close in figure
For the opening side thickness of flexbile gear 7 than relatively thin, outer ring is loaded smaller, and close to the outer ring slightly larger wall ratio loaded of flexbile gear blind end
Thicker, so that bearing outer ring both sides radial variations are equal, outer ring inclination conditions are obviously improved, and are reached and are reduced outer ring abrasion inequality
The target of even situation.
Claims (2)
1. a kind of harmonic speed reducer flexible bearing, including the inside and outside circle of flexible bearing（6、1）, it is placed in retainer（4）Interior steel ball
（5）, it is characterised in that the outer ring of the flexible bearing（1）Inner surface is stairstepping, the left and right side of inner surface internal diameter（2、3）
It is different, the left and right side of inner surface internal diameter（2、3）Semidiameter be h.
2. harmonic speed reducer flexible bearing according to claim 1, it is characterised in that the 0.4B>Semidiameter h>0.02B,
B is flexible bearing outer ring（1）Width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726240.9U CN206958091U (en) | 2017-06-21 | 2017-06-21 | Harmonic speed reducer flexible bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720726240.9U CN206958091U (en) | 2017-06-21 | 2017-06-21 | Harmonic speed reducer flexible bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206958091U true CN206958091U (en) | 2018-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720726240.9U Active CN206958091U (en) | 2017-06-21 | 2017-06-21 | Harmonic speed reducer flexible bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN206958091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084194A (en) * | 2017-06-21 | 2017-08-22 | 宁波慈兴轴承有限公司 | Harmonic speed reducer flexible bearing |
-
2017
- 2017-06-21 CN CN201720726240.9U patent/CN206958091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084194A (en) * | 2017-06-21 | 2017-08-22 | 宁波慈兴轴承有限公司 | Harmonic speed reducer flexible bearing |
| CN107084194B (en) * | 2017-06-21 | 2022-12-13 | 宁波慈兴轴承有限公司 | Flexible bearing of harmonic reducer |
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