CN201843975U - Hollow flexible gear for harmonic speed reducer - Google Patents
Hollow flexible gear for harmonic speed reducer Download PDFInfo
- Publication number
- CN201843975U CN201843975U CN2010206054271U CN201020605427U CN201843975U CN 201843975 U CN201843975 U CN 201843975U CN 2010206054271 U CN2010206054271 U CN 2010206054271U CN 201020605427 U CN201020605427 U CN 201020605427U CN 201843975 U CN201843975 U CN 201843975U
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- China
- Prior art keywords
- hollow
- flexbile gear
- flexible gear
- gear body
- transition arc
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Abstract
The utility model relates to a hollow flexible gear for a harmonic speed reducer, which comprises a hollow flexible gear body. One side of the hollow flexible gear body is a joining end and the other side is a working end, and threaded holes are distributed at the joining end of the hollow flexible gear body. The hollow flexible gear has the characteristic that the bottom of the threaded holes is a spherical contact surface. Meanwhile, the outer wall of the joining end of the hollow flexible gear body is provided with a main transition arc, and correspondingly, the inner wall of the joining end of the hollow flexible gear body is provided with a secondary transition arc. Due to the interaction of the spherical contact surface, the main transition arc, the secondary transition arc and a gradient angle Alpha, the stress concentration points of the flexible gear is greatly reduced during operation process, and meanwhile, the service life of the flexible gear is prolonged, so that the efficiency, the accuracy and the service life of the harmonic speed reducer is obviously improved.
Description
Technical field
The utility model relates to a kind of flexbile gear, relates in particular to a kind of harmonic wave speed reducing machine hollow flexbile gear.
Background technique
Harmonic wave speed reducing machine comprises that three core components are: wave-generator, flexbile gear, firm wheel.Wherein the member flexbile gear is owing to be a thin-wall case, and fatigue failure takes place easily in the effect of bearing alternating stress in movement process, and particularly the hollow structure flexbile gear more is easy to generate fatigue fracture.Along with developing rapidly of robot industry, the harmonic wave speed reducing machine of flexbile gear hollow design is used and is more and more come extensively, and its Problem of Failure has become the principal element that influences the harmonic wave speed reducing machine life-span.This all has very big influence to the precision of whole harmonic gear and the life-span of use.
The model utility content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of harmonic wave speed reducing machine hollow flexbile gear is provided.
For realizing the purpose of this utility model harmonic wave speed reducing machine hollow flexbile gear, include hollow flexbile gear body, a side of hollow flexbile gear body is a cohesive end, and opposite side is the working end, the cohesive end of described hollow flexbile gear body is distributed with tapped hole, and wherein: described tapped hole bottom is spherical surface of contact; The outer wall of described hollow flexbile gear body cohesive end is provided with main transition arc, and the inwall of described hollow flexbile gear body cohesive end is provided with from transition arc.
Further, above-mentioned harmonic wave speed reducing machine hollow flexbile gear, wherein, described from being distributed with 10 °～80 ° gradual change angle α between the inwall of transition arc extension and hollow flexbile gear body cohesive end.
Further, above-mentioned harmonic wave speed reducing machine hollow flexbile gear, wherein, described gradual change angle α is 45 °.
Adopt technical solutions of the utility model, rely on spherical surface of contact, main transition arc,, significantly reduced the stress concentration point that flexbile gear exists in operation from the cooperatively interacting of transition arc and gradual change angle α.Simultaneously, prolonged the working life of flexbile gear, thereby efficient, precision and the life-span of harmonic wave speed reducing machine are significantly improved.
The purpose of this utility model, advantage and characteristics will illustrate by following preferential embodiment's non-limitative illustration and explain that these embodiments only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of this harmonic wave speed reducing machine with the hollow flexbile gear;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is the organigram of existing hollow flexbile gear.
The implication of each reference character is as follows among the figure:
1 hollow flexbile gear body, 2 tapped holes
3 spherical surface of contact 4 main transition arcs
5 from transition arc 6 gradual change angle α
Embodiment
Shown in Fig. 1～2: the harmonic wave speed reducing machine that the utility model provides hollow flexbile gear, include hollow flexbile gear body 1, be cohesive end in a side of hollow flexbile gear body 1, opposite side is the working end.And, being distributed with tapped hole 2 at the cohesive end of hollow flexbile gear body 1, its unusual part is: tapped hole 2 bottoms that the utility model adopts are spherical surface of contact 3.Its actual principle is, find that by studying, analyze and test the back repeatedly traditional hollow flexbile gear has more speed reducer to have a common fatigue fracture zone when the harmonic wave speed reducing machine transmission, it concentrates on the wedge angle zone of hollow flexbile gear end thread bottom outlet root, promptly as shown in Figure 3.And the effectively existence in its three these fatigue fracture zones of existence by spherical surface of contact 3 promotes the ability of metal antifatigue.Simultaneously, the outer wall at hollow flexbile gear body 1 cohesive end is provided with main transition arc 4.Corresponding with it is, is provided with from transition arc 5 at the inwall of hollow flexbile gear body 1 cohesive end.
In conjunction with the utility model one preferred implementation, for auxiliary main transition arc 4 and the shaping from transition arc 5 are located, improve absorption and the smooth and easy transition degree of counter stress, the utility model employing from being distributed with 10 °～80 ° gradual change angle α 6 between the inwall of transition arc 5 extensions and hollow flexbile gear body 1 cohesive end.Simultaneously, after multiple comparison test, can and play preferable effect to main transition arc 4 when gradual change angle α 6 is 45 °, both reduce the distortional stress of flexbile gear, increase the life-span of antifatigue again from the stress absorption transition of transition arc 5.
From implementation process of the present utility model, consider the convenient of manufacturing, adopt special spherical cutter that the tap drill of 1 li of hollow flexbile gear body is milled the spherical surface of contact 3 that is processed into slyness.And the spherical surface of contact 3 after manufacturing is shaped is without any corner angle.
By above-mentioned character express and in conjunction with the accompanying drawings as can be seen, adopt the utility model after, rely on spherical surface of contact, main transition arc, from the cooperatively interacting of transition arc and gradual change angle α, significantly reduced the stress concentration point that flexbile gear exists in operation.Simultaneously, prolonged the working life of flexbile gear, thereby efficient, precision and the life-span of harmonic wave speed reducing machine are significantly improved.
Certainly, more than only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (3)
1. harmonic wave speed reducing machine hollow flexbile gear, include hollow flexbile gear body, a side of hollow flexbile gear body is a cohesive end, and opposite side is the working end, the cohesive end of described hollow flexbile gear body is distributed with tapped hole, it is characterized in that: described tapped hole bottom is spherical surface of contact; The outer wall of described hollow flexbile gear body cohesive end is provided with main transition arc, and the inwall of described hollow flexbile gear body cohesive end is provided with from transition arc.
2. harmonic wave speed reducing machine hollow flexbile gear according to claim 1 is characterized in that: described from being distributed with 10 °～80 ° gradual change angle α between the inwall of transition arc extension and hollow flexbile gear body cohesive end.
3. harmonic wave speed reducing machine hollow flexbile gear according to claim 1 is characterized in that: described gradual change angle α is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206054271U CN201843975U (en) | 2010-11-15 | 2010-11-15 | Hollow flexible gear for harmonic speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206054271U CN201843975U (en) | 2010-11-15 | 2010-11-15 | Hollow flexible gear for harmonic speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843975U true CN201843975U (en) | 2011-05-25 |
Family
ID=44038867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206054271U Expired - Lifetime CN201843975U (en) | 2010-11-15 | 2010-11-15 | Hollow flexible gear for harmonic speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843975U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978117A (en) * | 2014-05-21 | 2014-08-13 | 无锡双友石化机械有限公司 | Expanding head wedge block installing structure |
| CN107559403A (en) * | 2016-06-30 | 2018-01-09 | 比亚迪股份有限公司 | A kind of harmonic reducer flexible wheel and its manufacture method |
| CN110977343A (en) * | 2019-11-29 | 2020-04-10 | 安庆中船动力配套有限公司 | Processing technology of threaded blind hole of connecting rod body |
-
2010
- 2010-11-15 CN CN2010206054271U patent/CN201843975U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978117A (en) * | 2014-05-21 | 2014-08-13 | 无锡双友石化机械有限公司 | Expanding head wedge block installing structure |
| CN107559403A (en) * | 2016-06-30 | 2018-01-09 | 比亚迪股份有限公司 | A kind of harmonic reducer flexible wheel and its manufacture method |
| CN107559403B (en) * | 2016-06-30 | 2020-05-19 | 比亚迪股份有限公司 | Harmonic reducer flexible gear and manufacturing method thereof |
| CN110977343A (en) * | 2019-11-29 | 2020-04-10 | 安庆中船动力配套有限公司 | Processing technology of threaded blind hole of connecting rod body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180911 Address after: 215101 19 Mu Xu Road, Mu Du Town, Wuzhong District, Suzhou, Jiangsu Patentee after: Suzhou constant metal products Co., Ltd. Address before: 215021 19 Mu Du West Road, Suzhou, Jiangsu Patentee before: Uniquality Precision Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |