CN209067795U - Flexbile gear and harmonic speed reducer - Google Patents
Flexbile gear and harmonic speed reducer Download PDFInfo
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- CN209067795U CN209067795U CN201821849492.1U CN201821849492U CN209067795U CN 209067795 U CN209067795 U CN 209067795U CN 201821849492 U CN201821849492 U CN 201821849492U CN 209067795 U CN209067795 U CN 209067795U
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- external tooth
- tooth
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Abstract
The utility model discloses a kind of flexbile gear and harmonic speed reducers, the flexbile gear includes the ontology of tubular and is set to described external multiple external tooths circumferentially, it the ontology and partially protrudes into ball bearing is installed between the intrinsic harmonic oscillator, the two sides flank profil of each external tooth is translated compared to standard involute flank profil to denticle direction.It in the engagement process of external tooth and internal tooth, avoids causing the impact in transmission because of base pitch error, improves load distribution, keep operating more steady, while reducing root stress；Oil film is easy to form and is maintained, to improve the bonding strength of gear；Avoid interference of tooth profiles, sliding friction and it is stuck phenomena such as, and will not influence the precision of system, not will cause the vibration of system and the unstability of noise or system.
Description
Technical field
The utility model relates to technical field of mechanical transmission more particularly to a kind of flexbile gear and with the harmonic reduction of the flexbile gear
Device.
Background technique
Harmonic speed reducer is that controlled elasticity mechanical wave is generated by flexible part to transmit a kind of machinery of power and movement
Gearing speed-reducer.
Well known, harmonic speed reducer generally includes flexbile gear, firm gear, harmonic oscillator, and the rotation of harmonic oscillator forces soft
Property generate flexible deformation, and then internal tooth on the external tooth and firm gear on flexbile gear is made to form engaged transmission.
It is learnt from flexbile gear and firm gear transmission test:
When the external tooth of flexbile gear is processed into the involute profile of standard, it often will appear interference of tooth profiles, tooth in transmission process
The problems such as root stress is excessive, between cog sliding friction, to influence the stationarity of transmission.
When the addendum line in the facewidth direction of external tooth trend is processed into when the moving towards of addendum line of traditional rigid gear, external tooth
It can generate with the internal tooth of firm gear and diagonally contact, it may be assumed that the by-produced diametrical connection touching of gear, so that abrasion and noise increase, in turn
Influence transmission.
Utility model content
For the above-mentioned technical problems in the prior art, the embodiments of the present invention provide a kind of flexbile gear and tool
There is the harmonic speed reducer of the flexbile gear.
In order to solve the above technical problems, the embodiments of the present invention the technical solution adopted is that:
A kind of flexbile gear, ontology including tubular and is set to described external multiple external tooths circumferentially, described
It ontology and partially protrudes into being installed with ball bearing, the two sides flank profil of each external tooth between the intrinsic harmonic oscillator
It is translated compared to standard involute flank profil to denticle direction.
Preferably, the translational movement of the flank profil changes with the modulus of the external tooth and is changed, to work as the modulus of the external tooth
When increase, the translational movement of the flank profil increases, and when the modulus of the external tooth reduces, the translational movement of the flank profil reduces.
Preferably, the tooth top of the external tooth is divided into the first facewidth section, the second facewidth section and in the width direction of external tooth
Three facewidth sections；First facewidth section and the third facewidth section respectively correspond the front side positioned at second facewidth section with after
Side；Wherein:
The parallel straight flat section of the axis of ontology described in second facewidth Duan Weiyu, second facewidth section and the ball axis
It holds opposite in the axial direction.
Preferably, the length of second facewidth section is 1-1.25 times of the sphere diameter of ball bearing.
Preferably, first facewidth section and second facewidth section are to incline respectively to the front-end and back-end of the external tooth
Oblique oblique line section.
Preferably, the length of first facewidth section is 1.4-1.5 times of the length of second facewidth section.
The invention also discloses a kind of harmonic speed reducers, and ontology including cylinder is partially protruded into the ontology
Harmonic oscillator, the firm gear that is sheathed on the ontology；It is installed with ball bearing between the ontology and the harmonic oscillator,
The firm gear has internal tooth, and the ontology has the external tooth with the interior tooth engagement, and the two sides flank profil of the external tooth is compared to mark
Quasi- involute profile is translated to denticle direction.
Preferably, the tooth top of the external tooth is divided into the first facewidth section, the second facewidth section and in the width direction of external tooth
Three facewidth sections；First facewidth section and the third facewidth section respectively correspond the front side positioned at second facewidth section with after
Side；Wherein:
The parallel straight flat section of the axis of ontology described in second facewidth Duan Weiyu, second facewidth section and the ball axis
It holds opposite in the axial direction.
Preferably, the length of second facewidth section is 1-1.25 times of the sphere diameter of ball bearing.
Preferably, it states the first facewidth section and second facewidth section is to tilt respectively to the front-end and back-end of the external tooth
Oblique line section；The length of first facewidth section is 1.4-1.5 times of the length of second facewidth section.
Compared with prior art, the flexbile gear of the utility model and the beneficial effect of harmonic speed reducer are: in external tooth and internal tooth
Engagement process in, avoid causing because of base pitch error the impact in transmission, improve load distribution, keep operating more steady, together
When reduce root stress；Oil film is easy to form and is maintained, to improve the bonding strength of gear；It is dry to avoid flank profil
Relate to, sliding friction and it is stuck phenomena such as, and will not influence the precision of system, not will cause vibration and the noise of system, or
The unstability of person's system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the harmonic speed reducer that the embodiments of the present invention provide.
Fig. 2 is the flank profil structural schematic diagram of external tooth.
Fig. 3 is that the addendum line of external tooth walks direction view.
In figure:
10- flexbile gear；11- ontology；12- external tooth；121- tooth top；122- tooth root；20- firm gear；21- internal tooth；30- harmonic wave occurs
Device；40- ball bearing.
Specific embodiment
It is with reference to the accompanying drawing and specific real to make those skilled in the art better understand the technical solution of the utility model
Mode is applied to elaborate to the utility model.
As depicted in figs. 1 and 2, the utility model discloses a kind of flexbile gear 10, which is one in harmonic speed reducer
A transmission parts, in addition, harmonic speed reducer further includes firm gear 20, harmonic oscillator 30 and ball bearing 40.Wherein, flexbile gear 10 wraps
Include the ontology 11 of a tubular and be arranged circumferentially in multiple external tooths 12 of 11 front end of ontology, ontology 11 stretch in firm gear 20 with
The internal tooth 21 of firm gear 20 is engaged, and the front end of harmonic oscillator 30 stretches in ontology 11, and ball bearing 40 is installed in ontology 11
Between harmonic oscillator 30.In the present invention, make the two sides flank profil of the external tooth 12 of flexbile gear 10 compared to standard involute
Flank profil translates a to denticle direction to form the finishing tooth for being different from standard involute flank profil.
Know that the external tooth 12 of above structure has the effect that transmission by transmission test
In the engagement process of external tooth 12 and internal tooth 21, avoids causing the impact in transmission because of base pitch error, improve load
Lotus distribution, keeps operating more steady, while reducing 122 stress of tooth root；Oil film is easy to form and is maintained, to improve tooth
The bonding strength of wheel；Avoid interference of tooth profiles, sliding friction and it is stuck phenomena such as, and will not influence the precision of system, no
It will cause the vibration of system and the unstability of noise or system.
Flank profil is offset inward certain distance a, the circle of minimum tooth root 122 that value range guarantees according to modulus size and pinion cutter
Depending on.For example, when the modulus of external tooth 12 increases, the translational movement of flank profil increases, and when the modulus of external tooth 12 reduces, flank profil
Translational movement reduces.
In a preferred embodiment of the utility model, the tooth top 121 of external tooth 12 divides in the width direction of external tooth 12
At the first facewidth section △ 1, the second facewidth section △ 2 and third facewidth section △ 3；First facewidth section and third facewidth section respectively correspond position
Front side and rear side in the second facewidth section；Wherein: the parallel straight flat section of the axis of the second facewidth Duan Weiyu ontology 11, second facewidth
Section is opposite in the axial direction with ball bearing 40.Preferably, the length of the second facewidth section is the 1- of the sphere diameter of ball bearing 40
1.25 again.Preferably, the first facewidth section and the second facewidth section are respectively to the inclined oblique line section in the front-end and back-end of external tooth 12.
Preferably, the length of the first facewidth section is 1.4-1.5 times of the length of the second facewidth section.Preferably, the first facewidth end and third
The tooth root 122 of facewidth section also corresponding tilt.
Above-described embodiment is the finishing tooth modified relative to the addendum line of full-height tooth, by transmission test obtain into
The finishing tooth of above-mentioned finishing of having gone has the following beneficial effects:
1, the facewidth direction stress in engagement process is substantially uniform loaded, and gear capacity improves, and operation process
Middle noise reduces.
2, the warpage of end is compensated for.
The invention also discloses a kind of harmonic speed reducers, including above-mentioned flexbile gear 10.
Above embodiments are only the exemplary embodiment of the utility model, are not used in limitation the utility model, this is practical new
The protection scope of type is defined by the claims.Those skilled in the art can be in the essence and protection scope of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling in originally practical new
In the protection scope of type.
Claims (10)
1. a kind of flexbile gear, ontology including tubular and described external multiple external tooths circumferentially are set to, described
It body and partially protrudes between the intrinsic harmonic oscillator and is installed with ball bearing, which is characterized in that each external tooth
Two sides flank profil compared to standard involute flank profil to denticle direction translate.
2. flexbile gear according to claim 1, which is characterized in that the translational movement of the flank profil changes with the modulus of the external tooth
And change, with when the modulus of the external tooth increases, the translational movement of the flank profil increases, and when the modulus of the external tooth reduces
When, the translational movement of the flank profil reduces.
3. flexbile gear according to claim 1, which is characterized in that the tooth top of the external tooth is divided into the width direction of external tooth
First facewidth section, the second facewidth section and third facewidth section；First facewidth section and the third facewidth section respectively correspond and are located at
The front side of second facewidth section and rear side；Wherein:
The parallel straight flat section of the axis of ontology described in second facewidth Duan Weiyu, second facewidth section and the ball bearing exist
It is opposite on axial direction.
4. flexbile gear according to claim 3, which is characterized in that the length of second facewidth section is that the sphere of ball bearing is straight
1-1.25 times of diameter.
5. flexbile gear according to claim 3, which is characterized in that first facewidth section and second facewidth section are point
Not to the inclined oblique line section in the front-end and back-end of the external tooth.
6. flexbile gear according to claim 5, which is characterized in that the length of first facewidth section is second facewidth section
1.4-1.5 times of length.
7. a kind of harmonic speed reducer, ontology including cylinder partially protrudes into the intrinsic harmonic oscillator, is sheathed on institute
State the firm gear on ontology；Ball bearing is installed between the ontology and the harmonic oscillator, the firm gear has internal tooth, described
Ontology has the external tooth with the interior tooth engagement, which is characterized in that the two sides flank profil of the external tooth is compared to standard involute gear
Exterior feature is translated to denticle direction.
8. harmonic speed reducer according to claim 7, which is characterized in that width direction of the tooth top of the external tooth in external tooth
On be divided into the first facewidth section, the second facewidth section and third facewidth section；First facewidth section and the third facewidth section are right respectively
Front side and the rear side of second facewidth section should be located at；Wherein:
The parallel straight flat section of the axis of ontology described in second facewidth Duan Weiyu, second facewidth section and the ball bearing exist
It is opposite on axial direction.
9. harmonic speed reducer according to claim 8, which is characterized in that the length of second facewidth section is ball bearing
1-1.25 times of sphere diameter.
10. harmonic speed reducer according to claim 8, which is characterized in that state the first facewidth section and second facewidth section
It is respectively to the inclined oblique line section in the front-end and back-end of the external tooth；The length of first facewidth section is second facewidth
1.4-1.5 times of the length of section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849492.1U CN209067795U (en) | 2018-11-09 | 2018-11-09 | Flexbile gear and harmonic speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849492.1U CN209067795U (en) | 2018-11-09 | 2018-11-09 | Flexbile gear and harmonic speed reducer |
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| CN209067795U true CN209067795U (en) | 2019-07-05 |
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| CN201821849492.1U Active CN209067795U (en) | 2018-11-09 | 2018-11-09 | Flexbile gear and harmonic speed reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939713A (en) * | 2019-12-26 | 2020-03-31 | 深圳市山卓谐波传动科技有限公司 | Shape-modifying gear and harmonic reducer |
-
2018
- 2018-11-09 CN CN201821849492.1U patent/CN209067795U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939713A (en) * | 2019-12-26 | 2020-03-31 | 深圳市山卓谐波传动科技有限公司 | Shape-modifying gear and harmonic reducer |
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