JPS61171949A - Differential planetary roller speed reducer - Google Patents
Differential planetary roller speed reducerInfo
- Publication number
- JPS61171949A JPS61171949A JP1047385A JP1047385A JPS61171949A JP S61171949 A JPS61171949 A JP S61171949A JP 1047385 A JP1047385 A JP 1047385A JP 1047385 A JP1047385 A JP 1047385A JP S61171949 A JPS61171949 A JP S61171949A
- Authority
- JP
- Japan
- Prior art keywords
- planetary roller
- output
- output ring
- planetary
- diameter portion
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
- F16H13/08—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion with balls or with rollers acting in a similar manner
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明はころがり遊星機構を用いた減速機の一種である
差動遊星ローラ減速機に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a differential planetary roller speed reducer, which is a type of speed reducer using a rolling planetary mechanism.
（背景技術）
従来のころが）遊星機構を用いた減速機は出カリジグに
高負荷がかかると入力軸と遊星ローラ、あるいは遊星ロ
ーラと出力リングの間ですベシを生じ、トルク伝達効率
が低下するという欠点があった。(Background technology) In a reduction gear using a planetary mechanism (conventional roller), when a high load is applied to the output jig, a gap occurs between the input shaft and the planetary roller, or between the planetary roller and the output ring, reducing torque transmission efficiency. There was a drawback.
（発明の目的）
本発明は上記の点忙鑑み提案されたもので、その目的と
するところは、遊星ローラを出力リングよりも線膨張係
数の大きな材料にて形成し出力リングに高負荷が作用し
た際に生じる発熱により遊星ローラを膨張せしめて圧接
、力を増してすぺ）を減らし、トルク伝達効率を高くし
た差動遊星ローラ減速機を提供するものである。(Objective of the Invention) The present invention was proposed in view of the above-mentioned problems, and its purpose is to form the planetary roller with a material having a larger linear expansion coefficient than the output ring so that a high load is applied to the output ring. To provide a differential planetary roller speed reducer that increases torque transmission efficiency by expanding the planetary rollers due to the heat generated during this process, increasing the pressure and force, and reducing the amount of force required.
（発明の開示）
以下、本発明を一実施例として揚げた図面に基づいて説
明すると、太陽軸とも称される入力軸１と遊星キャリア
２と両出力リング４，５は同軸に配置され出力リング４
，５よりも線膨張係数の大きな材料でつくられた遊星ロ
ー２３は軸方向両端の軸部３１が遊星キャリア２の軸孔
２１で回動自在に支持されて入力軸ｌと出力リング４．
５との間だ複数個が軸まわりに等間隔で配設されている
。この各遊星ローラ３にはその外周面に環状の凹溝を設
ける。この凹溝によって遊星ローラ３を両端部が同径で
大径部をなす遊星ローラ３２ 、３４．これらの間が前
記凹溝の底部に相当し小径部をなす遊星ローラ（となっ
ている。(Disclosure of the Invention) Hereinafter, the present invention will be explained based on the drawings as an embodiment. An input shaft 1, also called a sun axis, a planetary carrier 2, and both output rings 4 and 5 are arranged coaxially, and the output ring 4
, 5, the planetary row 23 is made of a material with a larger coefficient of linear expansion than those of the input shaft 1 and the output ring 4. The shaft portions 31 at both ends in the axial direction are rotatably supported by the shaft holes 21 of the planetary carrier 2.
5, a plurality of them are arranged at equal intervals around the axis. Each planetary roller 3 is provided with an annular groove on its outer peripheral surface. These concave grooves allow the planetary rollers 32, 34. The space between these corresponds to the bottom of the groove and forms a small diameter portion of the planetary roller.
しかして、大径部の遊星ローラ３２には第１の出力リン
グ４が接触し、小径部の遊星ローラ羽には＠１の出力リ
ング４よりも内径の小さな第２の出力リング５が接触す
る。そして、各出力リング４．５の外周〈は夫々外周面
が歯車とされた出力接続りｙグ６．７が設けられている
。遊星ローラ（の側壁は全周にわたシ夫々チーー面あと
なっており、更に遊星ローラあの軸方向両端とチー／４
面３５との間にはグリス溜まりとしての＃４１が形成さ
れている。また、出力リング５０両１１１Ｉｉｋも上記
チール４面３５に対応するテーパ面１５が形成されてい
る。ただし、第２図に示すよ５に、このチー／ぐ面１５
の角度ψはテーイ面あの角度θよりも大きくしである。Therefore, the first output ring 4 contacts the planetary roller 32 in the large diameter portion, and the second output ring 5, which has an inner diameter smaller than the output ring 4 in @1, contacts the planetary roller blade in the small diameter portion. . On the outer periphery of each output ring 4.5, an output connecting ring 6.7 whose outer circumferential surface is a gear is provided. The side wall of the planetary roller has a chi surface on the entire circumference, and also has a chi surface on both ends of the planetary roller in the axial direction.
A grease reservoir #41 is formed between the surface 35 and the surface 35. Further, the output ring 50 111Iik is also formed with a tapered surface 15 corresponding to the four surfaces 35 of the teeth. However, as shown in FIG.
The angle ψ is larger than the angle θ on the Tei surface.
なお、１１は軸方向に並ぶ両出力リング４．５間に配設
されるスラストベアリングであり、摩擦係数の小さい合
成樹脂成形品と鋼球とで形成されている。また、１９は
入力軸ｌにおける遊星ローラ３の配設部の両端に取プ付
けられたグリップリング、加はころがシ軸受である。Note that 11 is a thrust bearing disposed between both output rings 4.5 arranged in the axial direction, and is made of a synthetic resin molded product with a small coefficient of friction and a steel ball. Further, reference numeral 19 denotes a grip ring attached to both ends of the portion where the planetary roller 3 is disposed on the input shaft l, and a roller bearing is attached to the input shaft l.
以上のように構成したこの遊星減速機においては、焼き
ばめ等の手段によシ出力リング４゜５の内面に遊星ロー
ラ３が圧接され、また、入 劉力軸ＩＫ遊星ローラ３
が圧接するようにされておシ、そして、トルクの伝達が
潤滑油を介してフリクション乃至トラクションドライブ
とじてのころがり伝達でなされるようにされている。In this planetary reducer configured as described above, the planetary roller 3 is pressed against the inner surface of the output ring 4.5 by means such as shrink fitting, and the input force axis IK planetary roller 3
are in pressure contact with each other, and torque is transmitted through the lubricating oil by rolling transmission such as friction or traction drive.
この場合、入力軸１からの回転入力はいずれか一方の出
力リング４．５を回転できないように固定しておけば他
方の出力リング５，４から差動出力であるところの大減
速比の回転出力をとシだすことができる。In this case, if the rotational input from the input shaft 1 is fixed so that one of the output rings 4.5 cannot rotate, the rotation at a large reduction ratio, which is a differential output, will be output from the other output ring 5, 4. It can output output.
しかし、て、本発明は、上記のように遊星ローラ３を出
力リング４，５よりも線膨張係数の大きな材料で形成し
たので、出力リング４．５に高負荷が作用した場合、遊
星ローラ３と人力軸１または出力リング４．５との間で
すべりが生じ、その発熱により遊星ローラ３が膨張する
。However, in the present invention, as described above, the planetary roller 3 is made of a material with a larger coefficient of linear expansion than the output rings 4 and 5, so when a high load is applied to the output ring 4.5, the planetary roller 3 A slip occurs between the human power shaft 1 or the output ring 4.5, and the planetary roller 3 expands due to the heat generated.
このとき遊星ローラ３と入力軸１および出力リング４．
５との間の圧接力が増し、すべりが少なくなる。このす
べりの減少により、トルク伝達＠率の高い減速機となる
ものである。At this time, the planetary roller 3, the input shaft 1, and the output ring 4.
5, the pressure contact between the two ends increases, and slippage decreases. This reduction in slip results in a reduction gear with a high torque transmission rate.
（発明の効果）
以上のように本発明によれば、遊星減速機における遊星
ローラを線膨張係数の大きな材料にて形成したので、遊
星ローラと入力軸または出力リングとの間ですべりが生
じた際に発熱が生じ、これによシ遊星ローラが膨張して
各部材間の圧接力が増加するため、結局すべりが減少し
、よって効率良くトルクを伝達することができる利点が
ある。(Effects of the Invention) As described above, according to the present invention, the planetary rollers in the planetary reducer are made of a material with a large coefficient of linear expansion, so that slipping occurs between the planetary rollers and the input shaft or output ring. At this time, heat is generated, which expands the planetary rollers and increases the pressing force between each member, which ultimately reduces slippage, which has the advantage of being able to efficiently transmit torque.
第１図は本発明一実施例の破断斜視図、第２図は部分拡
大縦断面図である。
１・・・入力軸、２・・・遊星キャリア、３・・・遊星
ローラ、４及び５・・・出力リング、１１・・・スラス
トベアリング、１９・・・グリップリング＆ ２０・・
・ころがり軸受、３２及びあ・・・大径部としての遊星
ローラ、：３３・・・小径部としての遊星ローラ。FIG. 1 is a cutaway perspective view of one embodiment of the present invention, and FIG. 2 is a partially enlarged longitudinal sectional view. 1... Input shaft, 2... Planetary carrier, 3... Planetary roller, 4 and 5... Output ring, 11... Thrust bearing, 19... Grip ring & 20...
- Rolling bearing, 32 and a... Planetary roller as a large diameter part: 33... Planetary roller as a small diameter part.
Claims (3)
いる遊星ローラを有し、かつ前記大径部に内接する第１
の出力リングと、前記小径部に内接する第２の出力リン
グとを備える遊星減速機であつて、前記遊星ローラの大
径部側面に設けられた第２の出力リングの軸方向の縁と
の接触部が小径部と略同一径とされていることを特徴と
する差動遊星ローラ減速機。(1) A first roller that is provided with a large diameter portion and a small diameter portion, has a planetary roller that is in contact with the input shaft, and is inscribed in the large diameter portion.
and a second output ring inscribed in the small diameter portion, the planetary reducer comprising an output ring inscribed in the small diameter portion, the planetary roller having an axial edge of the second output ring provided on a side surface of the large diameter portion of the planetary roller. A differential planetary roller speed reducer characterized in that a contact portion has approximately the same diameter as a small diameter portion.
ーパ面の角度と異なる角度の側面を有している第２の出
力リングの軸方向の縁を遊星ローラの上記テーパ面に接
触させたことを特徴とする特許請求の範囲第１項記載の
差動遊星ローラ減速機。(2) The side surface of the large diameter part of the planetary roller is a tapered surface, and the axial edge of the second output ring, which has a side surface at a different angle from the angle of this tapered surface, is brought into contact with the tapered surface of the planetary roller. A differential planetary roller speed reducer according to claim 1, characterized in that:
ングよりも線膨張係数の大きな材料にて形成したことを
特徴とする特許請求の範囲第２項記載の差動遊星ローラ
減速機。(3) The differential planetary roller speed reducer according to claim 2, wherein the planetary roller is formed of a material having a larger coefficient of linear expansion than the first output ring and the second output ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047385A JPS61171949A (en) | 1985-01-23 | 1985-01-23 | Differential planetary roller speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047385A JPS61171949A (en) | 1985-01-23 | 1985-01-23 | Differential planetary roller speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61171949A true JPS61171949A (en) | 1986-08-02 |
Family
ID=11751112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1047385A Pending JPS61171949A (en) | 1985-01-23 | 1985-01-23 | Differential planetary roller speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171949A (en) |
-
1985
- 1985-01-23 JP JP1047385A patent/JPS61171949A/en active Pending
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