JP3841180B2 - Rigid internal gear of flexure meshing gear device - Google Patents
Rigid internal gear of flexure meshing gear device Download PDFInfo
- Publication number
- JP3841180B2 JP3841180B2 JP10903596A JP10903596A JP3841180B2 JP 3841180 B2 JP3841180 B2 JP 3841180B2 JP 10903596 A JP10903596 A JP 10903596A JP 10903596 A JP10903596 A JP 10903596A JP 3841180 B2 JP3841180 B2 JP 3841180B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- rigid internal
- internal gear
- tooth member
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】
【発明の属する技術分野】
本発明は撓み噛み合い式歯車装置の剛性内歯歯車に関するものである。さらに詳しくは、強度、耐摩耗性等を損なうことなく軽量化を図った剛性内歯歯車に関するものである。
【０００２】
【従来の技術】
撓み噛み合い式歯車装置は、一般に、環状の剛性内歯歯車と、この内側に配置されたカップ状の可撓性外歯歯車と、この可撓性外歯歯車の内側に嵌めた波動発生器とを有している。波動発生器は一般に楕円状の輪郭となっており、当該波動発生器により可撓性外歯歯車は楕円状に撓められて、その外周面に形成されている外歯が、剛性内歯歯車の内歯に対して部分的に噛み合っている。波動発生器をモータ等によって回転させると、両歯車の噛み合い位置が周方向に移動する。外歯と内歯には歯数差があるので、歯数差に応じて、両歯車の間には相対回転が発生する。したがって、一方の歯車を固定しておけば、他方の側の歯車から減速回転出力を得ることができる。
【０００３】
ここで、撓み噛み合い式歯車装置は、部品点数が少なく、他の形式の減速機と比べて軽量であることが特徴となっている。より一層の軽量化を図るためには、その構成部品である剛性内歯歯車を軽量化する必要がある。すなわち、剛性内歯歯車は、強度および耐摩耗性が要求されるので、鉄系あるいは銅系の重い材料を用いて製造される。このために、構成部品の中での重量比が大きい。特に、モータあるいは出力側の部材に取り付けるための取付けフランジが一体形成されている場合、ハウジングが一体形成されている場合には、相当の重さとなるので、撓み噛み合い式歯車装置の軽量であるという利点が損なわれてしまう。
【０００４】
【発明が解決しようとする課題】
そこで、剛性内歯歯車のうち、強度および耐摩耗性が要求される内歯形成部分、すなわち歯部材のみを強度および耐摩耗性の高い鉄系あるいは銅系の材料で製造し、その他の本体部材をアルミニウム合金等の軽い材料で製造し、これらの部材を相互に接合して一体化することが考えられる。
【０００５】
この場合、本体部分と歯部材の間の接合部分は大きなトルクを伝達する必要があるので、ボルト等の締結金具で確実に接合しておく必要がある。しかし、このような接合方法では、本体部分および歯部材を厚い部材として製造する必要があるので軽量化を実現することが困難である。また、ボルト等を取り付ける必要があるので、その分重くなってしまう。
【０００６】
本発明の課題は、歯部材のみを強度および耐摩耗性の高い部材で製造した剛性内歯歯車において、歯部材と軽量な材料で製造した本体部材を、軽量化を損なうことなく確実に接合して一体化できるようにすることにある。
【０００７】
【課題を解決するための手段】
上記の課題を解決するために、本発明は、環状の剛性内歯歯車と、環状の可撓性外歯歯車と、当該可撓性外歯歯車を半径方向に撓めて前記剛性内歯歯車に部分的に噛み合わせると共にこれらの噛み合わせ位置を周方向に移動させる波動発生器とを有する撓み噛み合い式歯車装置において、前記剛性内歯歯車を、アルミニウム合金等の軽い材料から製造した環状本体部材と、鉄系あるいは銅系といった強度および耐える摩耗性に優れた重い材料から製造した歯部材とを接合して一体化した構造としてあり、これらの部材を接合して一体化するために次のようにしている。
【０００８】
すなわち、前記歯部材は、前記環状本体部材の内周面に対して当該歯部材の材料を溶射して肉盛りすることにより、前記環状本体部材に接合して一体に形成されている。
【０００９】
なお、歯部材に内歯を付けるための歯切り加工は、前記環状本体部材と前記歯部材を接合して一体化した後に行なうことが精度の点からは望ましい。
【００１０】
【発明の効果】
以上説明したように、本発明の剛性内歯歯車は、強度および耐摩耗性に優れた歯部材と、軽い環状本体部材から構成されており、しかも、これらの部材の間を大きなトルク伝達を確実に行なうことができる形態で接合して一体化してある。したがって、本発明によれば、トルク伝達特性、強度、耐摩耗性等を損なうことなく、従来に比べて軽い剛性内歯歯車を実現することができる。
【００１１】
また、本発明による剛性内歯歯車を備えた撓み噛み合い式歯車装置は、その重量比の多くを占める剛性内歯歯車が軽いので、従来に比べて軽量にすることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rigid internal gear of a flexure meshing gear device. More specifically, the present invention relates to a rigid internal gear that is reduced in weight without impairing strength, wear resistance, and the like.
[0002]
[Prior art]
In general, a flexure-meshing gear device includes an annular rigid internal gear, a cup-shaped flexible external gear disposed on the inside, and a wave generator fitted inside the flexible external gear. have. The wave generator generally has an elliptical outline, and the flexible external gear is bent elliptically by the wave generator, and the external teeth formed on the outer peripheral surface thereof are rigid internal gears. Partially meshed with the inner teeth. When the wave generator is rotated by a motor or the like, the meshing position of both gears moves in the circumferential direction. Since there is a difference in the number of teeth between the external teeth and the internal teeth, relative rotation occurs between the two gears according to the difference in the number of teeth. Therefore, if one gear is fixed, a reduced rotation output can be obtained from the gear on the other side.
[0003]
Here, the flexure meshing gear device is characterized in that it has fewer parts and is lighter than other types of reduction gears. In order to further reduce the weight, it is necessary to reduce the weight of the rigid internal gear that is a component thereof. That is, since the rigid internal gear is required to have strength and wear resistance, the rigid internal gear is manufactured using a heavy iron or copper material. For this reason, the weight ratio among the components is large. In particular, if the mounting flange for mounting on the motor or the output side member is formed integrally, if the housing is formed integrally, it will be a considerable weight, so it is said that the flexure meshing gear device is lightweight. The advantage is lost.
[0004]
[Problems to be solved by the invention]
Therefore, among the rigid internal gears, only the internal teeth forming portion that is required to have strength and wear resistance, that is, the tooth members are manufactured from iron or copper materials having high strength and wear resistance, and other body members. It is conceivable to manufacture these with a light material such as an aluminum alloy and to join these members together.
[0005]
In this case, since the joint portion between the main body portion and the tooth member needs to transmit a large torque, it is necessary to securely join with a fastener such as a bolt. However, in such a joining method, since it is necessary to manufacture a main-body part and a tooth member as a thick member, it is difficult to implement | achieve weight reduction. Moreover, since it is necessary to attach a volt | bolt etc., it will become heavy correspondingly.
[0006]
An object of the present invention is to securely join a tooth member and a main body member made of a light material without impairing weight reduction in a rigid internal gear that is made of only a tooth member made of a material having high strength and wear resistance. Is to be able to integrate.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides an annular rigid internal gear, an annular flexible external gear, and the rigid internal gear by bending the flexible external gear in a radial direction. In a flexure meshing gear device having a wave generator that partially meshes with each other and moves the meshing position in the circumferential direction, the rigid internal gear is made of a light material such as an aluminum alloy. And a toothed material manufactured from heavy materials with excellent strength and wear resistance, such as iron-based or copper-based, are joined and integrated. To join and integrate these members, I have to.
[0008]
That is, the tooth member is integrally formed by joining the annular body member by spraying the material of the tooth member on the inner peripheral surface of the annular body member to build up.
[0009]
In addition, it is desirable from the point of accuracy that gear cutting for attaching internal teeth to the tooth member is performed after the annular body member and the tooth member are joined and integrated.
[0010]
【The invention's effect】
As described above, the rigid internal gear of the present invention is composed of a tooth member having excellent strength and wear resistance and a light annular main body member, and reliably transmits a large torque between these members. It is joined and integrated in a form that can be carried out. Therefore, according to the present invention, a rigid internal gear that is lighter than the conventional one can be realized without impairing torque transmission characteristics, strength, wear resistance, and the like.
[0011]
Further, the flexure meshing gear device provided with the rigid internal gear according to the present invention can be made lighter than the conventional one because the rigid internal gear that occupies most of the weight ratio is light.
Claims (3)
環状本体部材と、内歯を備えた歯部材とを有し、
前記環状本体部材と前記歯部材とは異なる材料からなり、
前記歯部材は、前記環状本体部材の内周面に対して当該歯部材の材料を溶射して肉盛りすることにより、前記環状本体部材に接合して一体に形成されていることを特徴とする剛性内歯歯車。An annular rigid internal gear, an annular flexible external gear, and the flexible external gear are bent in the radial direction so as to partially mesh with the rigid internal gear, and the meshing positions thereof are set. The rigid internal gear in a flexibly meshing gear device having a wave generator that moves in a circumferential direction,
An annular body member and a tooth member with internal teeth;
The annular body member and the tooth member are made of different materials,
The tooth member is integrally formed by joining the annular body member by spraying the material of the tooth member on the inner peripheral surface of the annular body member to build up the tooth member. Rigid internal gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10903596A JP3841180B2 (en) | 1996-04-30 | 1996-04-30 | Rigid internal gear of flexure meshing gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10903596A JP3841180B2 (en) | 1996-04-30 | 1996-04-30 | Rigid internal gear of flexure meshing gear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09291984A JPH09291984A (en) | 1997-11-11 |
| JP3841180B2 true JP3841180B2 (en) | 2006-11-01 |
Family
ID=14499966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10903596A Expired - Lifetime JP3841180B2 (en) | 1996-04-30 | 1996-04-30 | Rigid internal gear of flexure meshing gear device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3841180B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220107883A (en) * | 2021-01-26 | 2022-08-02 | 주식회사 에스 피 지 | Flexspline and strain wave gear device |
-
1996
- 1996-04-30 JP JP10903596A patent/JP3841180B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220107883A (en) * | 2021-01-26 | 2022-08-02 | 주식회사 에스 피 지 | Flexspline and strain wave gear device |
| KR102431777B1 (en) * | 2021-01-26 | 2022-08-16 | 주식회사 에스 피 지 | Flexspline and strain wave gear device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09291984A (en) | 1997-11-11 |
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