CN205689717U - Strengthen flexbile gear and just take turns the harmonic gear engaged and harmonic speed reducer - Google Patents
Strengthen flexbile gear and just take turns the harmonic gear engaged and harmonic speed reducer Download PDFInfo
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- CN205689717U CN205689717U CN201620587768.8U CN201620587768U CN205689717U CN 205689717 U CN205689717 U CN 205689717U CN 201620587768 U CN201620587768 U CN 201620587768U CN 205689717 U CN205689717 U CN 205689717U
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Abstract
This application discloses and a kind of strengthen flexbile gear and just take turns the harmonic gear engaged and harmonic speed reducer, wherein harmonic gear includes ring flange, described ring flange includes the first wall thickness of annular and the second wall thickness of annular, the thickness of described first wall thickness is more than the thickness of described second wall thickness, described second wall thickness is connected with cylinder, described cylinder is provided with external tooth away from the end of described ring flange, it is characterized in that, described first wall thickness and the junction of described second wall thickness, described second wall thickness is thin structure with junction and the described cylinder of described cylinder near the side-walls of described external tooth.Use such scheme, improve the adaptivity of flexbile gear external tooth, bearing capacity and service life.
Description
Technical field
Present application relates generally to harmonic speed reducer technical field, particularly relate to strengthen flexbile gear and just take turns the harmonic gear engaged
And harmonic speed reducer.
Background technology
Harmonic speed reducer because having that bearing capacity is high, gear ratio is big, volume is little, lightweight, transmission efficiency is high, life-span length,
Stable drive, nothing impact, noiselessness, the advantage that kinematic accuracy is high, and it is widely used in the row such as electronics, space flight and aviation, robot
Industry.
Harmonic speed reducer mainly includes just having taken turns, flexbile gear and wave producer.Wherein, the crucial portion during flexbile gear is harmonic speed reducer
Part, to a great extent, flexbile gear determines bearing capacity and the service life of harmonic speed reducer.Existing harmonic speed reducer,
After flexbile gear assembles with wave producer, the cylinder of flexbile gear can be made to form ellipticity, the external tooth at major axis just presents as shown in Figure 2,4
Tilting, the external tooth at the shortest axle presents reverse caster (version after dotted portion is deformation in Fig. 1-4), this
Allowing for just taking turns the position of engagement with flexbile gear and be predominantly located at the opening part of flexbile gear, this results in the external tooth internal tooth with just wheel of flexbile gear
Engagement deficiency, area of contact is less, reduces the rigidity of flexbile gear external tooth and the bearing capacity of harmonic speed reducer.Further, since nibble
Conjunction area is little, and the stress of unit are can be bigger, increases abrasion, reduces service life.
Utility model content
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of flexbile gear and harmonic speed reducer, in order to solve
The problem that present in prior art, bearing capacity is low, service life is short.
The application provides a kind of harmonic gear, including ring flange, described ring flange include annular the first wall thickness and
Second wall thickness of annular, the thickness of described first wall thickness is more than the thickness of described second wall thickness, described second wall thickness
Portion is connected with cylinder, and described cylinder is provided with external tooth away from the end of described ring flange, and described first wall thickness is with described
The junction of the junction of the second wall thickness, described second wall thickness and described cylinder and described cylinder are near the side of described external tooth
Thin structure it is at wall.
The application also provides for a kind of harmonic speed reducer, including above-mentioned harmonic gear.
The technique scheme that the application provides, wherein harmonic gear namely flexbile gear, respectively in the first wall thickness and second
The junction of wall thickness, the second wall thickness are provided with near the side-walls these three position of external tooth with junction and the cylinder of cylinder
Thin structure, thin structure described here refers to the thickness thinner thickness compared with its both sides of thin structure.Thinning by arranging
Structure so that the external tooth part of flexbile gear and is radially more prone to deform upon in the axial direction, thus reduces flexbile gear external tooth
Slope so that flexbile gear external tooth adds adaptivity to just wheel internal tooth, so can more fully enter with the internal tooth just taken turns
Row engagement, improves area of contact, along with the raising of area of contact so that flexbile gear engagement unit are stress reduces and improves
Integral rigidity, increases bearing capacity further and extends service life.It addition, flexible external tooth and just wheel also can be reduced
Precompression between internal tooth and abrasion, also can reduce, for bearing relative to the radial forces of the bearing imposed on flexbile gear
Life-span also can be substantially improved, the positioning precision of harmonic speed reducer is also had and more preferably shows.
Accompanying drawing explanation
By the detailed description that non-limiting example is made made with reference to the following drawings of reading, other of the application
Feature, purpose and advantage will become more apparent upon:
Fig. 1 is the deformation state schematic diagram at the hollow type short-and-medium axle of flexbile gear motor process；
Fig. 2 is the deformation state schematic diagram in hollow type flexbile gear motor process at major axis；
Fig. 3 is the deformation state schematic diagram at the cup type short-and-medium axle of flexbile gear motor process；
Fig. 4 is the deformation state schematic diagram in cup type flexbile gear motor process at major axis；
The structural representation of the cup type flexbile gear that Fig. 5 provides for this utility model；
The structural representation of the hollow type flexbile gear that Fig. 6 provides for this utility model；
The gradual shrinkage structural representation of the cup type flexbile gear that Fig. 7 provides for this utility model；
The gradual shrinkage structural representation of the hollow type flexbile gear that Fig. 8 provides for this utility model.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to this invention.It also should be noted that, in order to
It is easy to describe, accompanying drawing illustrate only and invent relevant part.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Refer to described in Fig. 5, the harmonic gear that this utility model embodiment provides, this harmonic gear is cup type flexbile gear, bag
Including ring flange, ring flange includes the first wall thickness 1 of annular and the second wall thickness 3 of annular, the thickness of the first wall thickness 1
More than the thickness of the second wall thickness 3, the second wall thickness 3 is connected with cylinder 5, and cylinder 5 is provided with away from the end of ring flange
External tooth 7, the first wall thickness 1 and the junction of the second wall thickness 3, the second wall thickness 3 are close with the junction of cylinder 5 and cylinder 5
The side-walls of external tooth 7 is thin structure.
Wherein, first wall thickness the 1, second wall thickness 3, cylinder 5 and external tooth 7 four part are structure as a whole.
The technique scheme that the application provides, respectively in the first wall thickness 1 and the junction of the second wall thickness 3, second
Wall thickness 3 is provided with thin structure with junction and the cylinder 5 of cylinder 5 near the side-walls these three position of external tooth, institute here
The thin structure stated refers to the thickness thinner thickness compared with its both sides of thin structure.By arranging thin structure so that flexbile gear
External tooth part and is radially more prone to deform upon in the axial direction, thus reduces the slope of flexbile gear external tooth so that flexbile gear
External tooth adds adaptivity to just wheel internal tooth, so more fully can be engaged with the internal tooth just taken turns, improve and nibble
Close area, along with the raising of area of contact so that flexbile gear engagement unit are stress reduces and improves integral rigidity, further
Increase bearing capacity and extend service life.It addition, flexbile gear external tooth also can be reduced and just taken turns the precompressed between internal tooth
Power and abrasion, also can reduce relative to the radial forces of the bearing imposed on flexbile gear, and the life-span for bearing also can be significantly
Promote, the positioning precision of harmonic speed reducer is also had and more preferably shows.
Specifically, the junction in the first wall thickness 1 and the second wall thickness 3 arranges thin structure 2 so that the external tooth of flexbile gear
7 deformation in the axial direction are more prone to, and thin structure are arranged on the junction of the first wall thickness 1 and the second wall thickness 3 (also
I.e. junction), the fulcrum of stress can be made to greatest extent away from stress point, such first wall thickness 1 and the second wall thickness 3
Junction only needs the most thinning, the rigidity of flexbile gear will not be brought infringement.Second wall thickness 3 sets with the junction of cylinder 5
The thin structure 4 put is more prone to when making the flange of flexbile gear with cylinder 5 relative bending.Cylinder 5 sets near the side-walls of external tooth 7
The thin structure 6 put makes external tooth 7 the most soft, under moving along with wave producer, and the external tooth 7 of flexbile gear and just wheel
The engagement of internal tooth can be more abundant, add area of contact, along with the increase of area of contact, the flank of tooth rigidity of external tooth and harmonic wave
The bearing capacity of decelerator is all improved.By arranging thin structure, the wall thickness that can keep flange and cylinder 5 is constant, this
Sample can make torsional rigid obtain raising.
Further, the wall thickness of the junction thin structure of the first wall thickness 1 and the second wall thickness 3 is a, the second wall thickness
3 is b with the wall thickness of the junction thin structure of cylinder 5, and cylinder 5 is c near the wall thickness of the side-walls thin structure of external tooth 7, and a
＞ b ＞ c, c ＞ 0.5 t, t are the second wall thickness 3 or the wall thickness of cylinder 5.Use this kind of thinning mode so that flexbile gear is more
" soft ", and meet rigidity requirement.
Further, the thin structure of the junction of the first wall thickness 1 and the second wall thickness 3, and cylinder 5 is near external tooth
The thin structure of side-walls is circular arc thin structure, and 25t ＞ R ＞ 10t, and wherein, R is arc radius, and t is the second wall thickness
Portion 3 or the wall thickness of cylinder 5.
Further, the second wall thickness 3 and the junction arc transition structure of cylinder 5, and ROutward＞ RIn+ t, wherein, ROutwardFor
The radius of outer arc, RInFor inner arc radius, t is the wall thickness of cylinder 5.
Further, as it is shown in fig. 7, the gradual shrinkage of the thin structure of the junction of the first wall thickness 1 and the second wall thickness 3
Structure, the thickness of described gradual shrinkage structure linearly reduces to the first wall thickness 1 from the second wall thickness 3.Namely thin structure is certainly
A certain position (particular location the determines according to actual needs) place of the second wall thickness starts to extend to the first wall thickness, and ensures to subtract
The Reducing thickness of thin structure is linear change.Such as but not limited to Fig. 7 (using just to Fig. 7 as observation visual angle, the top of paper
Portion is upper, under the bottom of paper is) shown in, the sideline on the left of thin structure is straight line and tilts the most to the right, and its
The sideline on right side vertically extends or tilts the most to the left, material is thus formed the structure of gradual shrinkage.Use this
Plant the mode of gradual shrinkage so that the transition ratio of power is shallower, prevent stress and concentrate.It addition, at the end of gradual shrinkage structure,
Namely be connected with the first wall thickness by the way of arc transition near the part of the first wall thickness.
Further, as it is shown in fig. 7, cylinder 5 near the side-walls of external tooth 7 thin structure for gradual shrinkage structure, gradually
The thickness of miniature structure linearly reduces from cylinder 5 to external tooth 7.Such as but not limited to Fig. 7 (just Fig. 7 is come as observation visual angle
Saying, the top of paper is upper, under the bottom of paper is) shown in, the sideline on the upside of thin structure is straight line and the most downward
Roll tiltedly, and sideline on the downside of it is horizontally extending or the most upwards rolls tiltedly, material is thus formed gradual shrinkage
Structure.Use the mode of gradual change so that the transition ratio of power is shallower, prevent stress and concentrate.It addition, in this gradual shrinkage structure
End, namely be connected with external tooth 7 by the way of arc transition near the part of external tooth 7.Certainly, this utility model embodiment
The flexbile gear provided, it is also possible to for such as Fig. 6, the hollow type flexbile gear shown in 8, it includes ring flange equally, and ring flange includes annular
The first wall thickness 8 and the second wall thickness 10 of annular, the thickness of the first wall thickness 8 more than the thickness of the second wall thickness 10,
Second wall thickness 10 is connected with cylinder 12, and cylinder 12 is provided with external tooth 14 away from the end of ring flange, the first wall thickness 8 with
The junction of the second wall thickness 10, the second wall thickness 10 and the junction of cylinder 12 and cylinder 11 are punished near the sidewall of external tooth 14
It is not provided with thin structure 9,11,13.Its thin structure can be identical with cup type flexbile gear, can be the thin structure of circular arc, also
It can be gradual shrinkage thin structure.
This utility model also provides for a kind of harmonic speed reducer, and this harmonic speed reducer can be hollow type, it is also possible to be cup type.
Wherein, this harmonic speed reducer can use the harmonic gear of above-described embodiment, and the concrete structure of harmonic gear refers to above-described embodiment,
Here repeat no more.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, also should contain in the case of without departing from described inventive concept simultaneously, above-mentioned technical characteristic or its equivalent feature carry out
Combination in any and other technical scheme of being formed.Such as features described above has similar merit with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (7)
1. a harmonic gear, including ring flange, described ring flange includes first wall thickness and the second of annular of annular
Wall thickness, the thickness of described first wall thickness is more than the thickness of described second wall thickness, and described second wall thickness is connected with
Cylinder, described cylinder is provided with external tooth away from the end of described ring flange, it is characterised in that described first wall thickness and described the
The junction of two wall thickness, the junction of described second wall thickness and described cylinder and described cylinder are near the sidewall of described external tooth
Place is thin structure.
Harmonic gear the most according to claim 1, it is characterised in that described first wall thickness and described second wall thickness
The wall thickness of junction thin structure is a, and described second wall thickness is b with the wall thickness of the junction thin structure of described cylinder, institute
Stating cylinder near the wall thickness of the side-walls thin structure of described external tooth is c, and a ＞ b ＞ c, and c ＞ 0.5 t, t are the second wall thickness
Or the wall thickness of cylinder.
Harmonic gear the most according to claim 1 and 2, it is characterised in that described first wall thickness and described second wall thickness
The thin structure of the junction in portion, and described cylinder is the thinning knot of circular arc near the thin structure of the side-walls of described external tooth
Structure, and 25t ＞ R ＞ 10t, wherein, R is arc radius, and t is the wall thickness of the second wall thickness or cylinder.
Harmonic gear the most according to claim 1 and 2, it is characterised in that described second wall thickness and the company of described cylinder
Meeting place is arc transition structure, and ROutward＞ RIn+ t, wherein, ROutwardFor the radius of outer arc, RInFor inner arc radius, t is institute
State the wall thickness of cylinder.
Harmonic gear the most according to claim 1 and 2, it is characterised in that described first wall thickness and described second wall thickness
The thin structure of the junction in portion is gradual shrinkage structure, the thickness of described gradual shrinkage structure from described second wall thickness to described
One wall thickness linearly reduces.
Harmonic gear the most according to claim 1 and 2, it is characterised in that described cylinder is near the side-walls of described external tooth
Thin structure for gradual shrinkage structure, the thickness of described gradual shrinkage structure linearly reduces from described cylinder to described external tooth.
7. a harmonic speed reducer, it is characterised in that include the harmonic gear described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620587768.8U CN205689717U (en) | 2016-06-16 | 2016-06-16 | Strengthen flexbile gear and just take turns the harmonic gear engaged and harmonic speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620587768.8U CN205689717U (en) | 2016-06-16 | 2016-06-16 | Strengthen flexbile gear and just take turns the harmonic gear engaged and harmonic speed reducer |
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| CN205689717U true CN205689717U (en) | 2016-11-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488352A (en) * | 2018-03-09 | 2018-09-04 | 太原理工大学 | A kind of no cartridge type harmonic speed reducer |
| CN109027181A (en) * | 2018-09-27 | 2018-12-18 | 东莞市国森科精密工业有限公司 | A kind of flat tube structure design method of harmonic speed reducer |
| CN110645336A (en) * | 2019-09-27 | 2020-01-03 | 贵州群建精密机械有限公司 | Method and structure for improving bearing capacity of short cup type harmonic flexible gear |
| CN112943891A (en) * | 2021-02-22 | 2021-06-11 | 珠海格力电器股份有限公司 | Flexible gear and harmonic reducer comprising same |
-
2016
- 2016-06-16 CN CN201620587768.8U patent/CN205689717U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488352A (en) * | 2018-03-09 | 2018-09-04 | 太原理工大学 | A kind of no cartridge type harmonic speed reducer |
| CN109027181A (en) * | 2018-09-27 | 2018-12-18 | 东莞市国森科精密工业有限公司 | A kind of flat tube structure design method of harmonic speed reducer |
| CN110645336A (en) * | 2019-09-27 | 2020-01-03 | 贵州群建精密机械有限公司 | Method and structure for improving bearing capacity of short cup type harmonic flexible gear |
| CN112943891A (en) * | 2021-02-22 | 2021-06-11 | 珠海格力电器股份有限公司 | Flexible gear and harmonic reducer comprising same |
| CN112943891B (en) * | 2021-02-22 | 2022-07-12 | 珠海格力电器股份有限公司 | Flexible gear and harmonic reducer comprising same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211009 Address after: 255000 No. 65, Chengcheng street, Qidu Town, Linzi District, Zibo City, Shandong Province Patentee after: Borui (Shandong) Precision Industry Co.,Ltd. Address before: 226000 room 8117, building 11, Xingfu new town, Gangzha District, Nantong City, Jiangsu Province Patentee before: WISSING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |