JPH0754946A - Multi-step planetary roller reduction machine - Google Patents

Multi-step planetary roller reduction machine

Info

Publication number
JPH0754946A
JPH0754946A JP20324393A JP20324393A JPH0754946A JP H0754946 A JPH0754946 A JP H0754946A JP 20324393 A JP20324393 A JP 20324393A JP 20324393 A JP20324393 A JP 20324393A JP H0754946 A JPH0754946 A JP H0754946A
Authority
JP
Japan
Prior art keywords
roller
planetary
case
planetary roller
sun
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.)
Withdrawn
Application number
JP20324393A
Other languages
Japanese (ja)
Inventor
Hisayoshi Takahashi
久義 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP20324393A priority Critical patent/JPH0754946A/en
Publication of JPH0754946A publication Critical patent/JPH0754946A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To provide a multi-step planetary roller reduction machine which involves less rotational variation and vibration, can enhance the processing accuracy, and is easy to fabricate by a precision machining device without dropping the transmitted torque. CONSTITUTION:In an arrangement where shifting-down is made using planetary rollers in every shift position, inner rollers 3 accommodated in a case 12 and to make pressure contact of the planet rollers between the inside surface of the case 12 and the outside surface of the sun roller are provided where the first inner roller 3 of the front stage shift-down mechanism 10 is formed as a ring having a groove-shaped section while the second inner roller 23 of the rear stage shift-down mechanism 20 is shaped as a ring having a rectangular solid section and in pressure contact with the second planet roller 24 at three points or more on the inside surface. The outside surface is positioned with a certain gap reserved from the inside surface of the case 12, and the side faces of the first and second inner rollers 3, 23 are pressed and retained with fastening made by a bolt so that they are laid in line within the case 12.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、全段に遊星ローラを使
用した多段減速機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multistage speed reducer using planet rollers in all stages.

【0002】[0002]

【従来の技術】従来の遊星ローラを使用した多段減速機
の例として、本出願人が提案した、第1段を遊星ローラ
減速機、第2段を遊星歯車減速機とした、実願昭55−
69807号に開示されたものがある。これを図2によ
り説明する。図において、01は電動モータ等の原動
機、02は原動機1の回転軸030に連結された入力軸
に設けられた太陽ローラ、03はケース038の内面に
固定された内ローラ、04は太陽ローラ2の外周面と内
ローラ03の内周面との間で圧接、配設された複数個の
遊星ローラ、07は遊星ローラ04を軸受06にて回動
自在に軸支する遊星ピン、08は遊星ピン07をそのフ
ランジ部に固着する中間キャリアである。そして、上記
太陽ローラ02、内ローラ03、遊星ローラ04、遊星
ピン07、中間キャリア08、および軸受06により第
1段の遊星ローラ減速機010を構成する。なお、上記
内ローラ03は、回転軸心021方向に押付力を付与す
ると、半径方向に変形可能にされた弾性体で構成されて
いる。031は、遊星ローラ減速機010の中間キャリ
ア08に連結された太陽歯車、033はケース038の
内面に嵌装された内歯車、032は太陽歯車031と内
歯車033との間に複数個配設され、これらに噛合され
る遊星歯車である。該遊星歯車032は、出力軸017
の端部にフランジ状に形成されたギヤーキャリア035
の、円周方向等間隔に複数個固着された遊星ピン034
に、軸受036を介して軸支されている。上記太陽歯車
031、遊星歯車032、内歯車033、遊星ピン03
4、ギヤーキャリア035、および軸受036により第
2段の遊星歯車減速機030を構成する。また、037
は内ローラ03と内歯車033の両側部に介装されるス
ペーサ、018a,018bは出力軸017用の軸受で
ある。
2. Description of the Related Art As an example of a conventional multi-stage speed reducer using planetary rollers, a first application is proposed by the present applicant, in which a planetary roller speed reducer is used for the first stage and a planetary gear speed reducer is used for the second stage. −
There is one disclosed in No. 69807. This will be described with reference to FIG. In the drawing, 01 is a prime mover such as an electric motor, 02 is a sun roller provided on an input shaft connected to a rotating shaft 030 of the prime mover 1, 03 is an inner roller fixed to the inner surface of the case 038, and 04 is a sun roller 2. , A plurality of planet rollers arranged in pressure contact with the inner peripheral surface of the inner roller 03, 07 is a planet pin that rotatably supports the planet roller 04 with a bearing 06, and 08 is a planet. An intermediate carrier for fixing the pin 07 to the flange portion. The sun roller 02, inner roller 03, planetary roller 04, planetary pin 07, intermediate carrier 08, and bearing 06 constitute a first stage planetary roller speed reducer 010. The inner roller 03 is composed of an elastic body that is deformable in the radial direction when a pressing force is applied in the direction of the rotation axis 021. Reference numeral 031 denotes a sun gear connected to the intermediate carrier 08 of the planetary roller reducer 010, reference numeral 033 denotes an internal gear fitted to the inner surface of the case 038, reference numeral 032 denotes a plurality of arrangements between the sun gear 031 and the internal gear 033. It is a planetary gear that is meshed with these gears. The planet gear 032 has an output shaft 017.
Gear carrier 035 formed like a flange at the end of
, A plurality of planet pins 034 fixed at equal intervals in the circumferential direction
In addition, it is rotatably supported by a bearing 036. The sun gear 031, the planet gear 032, the internal gear 033, the planet pin 03
4, the gear carrier 035, and the bearing 036 constitute a second stage planetary gear reducer 030. Also, 037
Are spacers provided on both sides of the inner roller 03 and the inner gear 033, and 018a and 018b are bearings for the output shaft 017.

【0003】上記減速機において、原動機01により太
陽ローラ02が回転せしめられると遊星ローラ04が該
太陽ローラ02と内ローラ03との間で圧接されている
ので、自転しながら公転する。その結果、中間キャリア
08からは、遊星ローラ04の公転速度に減速された動
力が取り出されて、第2段の遊星歯車減速機030の太
陽歯車031に伝達される。
In the speed reducer, when the sun roller 02 is rotated by the prime mover 01, the planet roller 04 is pressed against the sun roller 02 and the inner roller 03, so that the sun roller 02 revolves around its own axis. As a result, the power reduced to the revolution speed of the planetary roller 04 is extracted from the intermediate carrier 08 and transmitted to the sun gear 031 of the second-stage planetary gear reducer 030.

【0004】第1段の遊星ローラ減速機010の減速比
1 は、下記(1)式のようになる。
The speed reduction ratio i 1 of the first stage planetary roller speed reducer 010 is expressed by the following equation (1).

【0005】 i1 =出力回転数/入力回転数=D1/(D1+D2)……………(1) 但し、D1 は太陽ローラ02の外径 D2 は内ローラ03の内径 中間キャリア08による遊星ローラ04の公転速度に減
速された動力が伝達されて、太陽歯車031が回転せし
められると、遊星歯車032が該太陽歯車031と内歯
車033との間を自転しながら公転し、ギヤーキャリア
035からは、遊星歯車032の公転速度に減速された
動力が取り出されて、出力軸017に伝達される。
I 1 = output rotation speed / input rotation speed = D1 / (D1 + D2) (1) where D 1 is the outer diameter of the sun roller 02, D 2 is the inner diameter of the inner roller 03, and the intermediate carrier 08 When the sun gear 031 is rotated by transmitting the power reduced to the revolution speed of the planetary roller 04, the planetary gear 032 revolves while rotating between the sun gear 031 and the internal gear 033, and the gear carrier 035. From the, the power reduced to the revolution speed of the planetary gear 032 is extracted and transmitted to the output shaft 017.

【0006】第2段の遊星歯車減速機030の減速比i
2 は、下記(2)式のようになる。
The reduction ratio i of the second stage planetary gear reducer 030
2 becomes like the following formula (2).

【0007】 i2 =出力回転数/入力回転数=Z1/(Z1+Z2)……………(2) 但し、Z1 は太陽歯車031の歯数 Z2 は内歯車033の歯数 従って、出力軸017は原動機1の回転数がi=i1
2 の減速比で減速された回転数で以って、入力軸、即
ち太陽ローラ02と同一方向に回転せしめられる。しか
し、上記の多段減速機は、2段減速のうちの、後段であ
る第2段の遊星歯車減速機30が太陽歯車031、遊星
歯車032、内歯車033、による伝動なので大トルク
の伝達については問題ないが、歯車特有の回転変動や歯
の噛合いで発生する振動は避けられないという問題があ
る。最近の精密な機械装置では、伝達トルクを落とすこ
となく、回転変動や振動の少ない装置が要求されてお
り、満足すべきものではなかった。
I 2 = output rotational speed / input rotational speed = Z1 / (Z1 + Z2) (2) where Z 1 is the number of teeth of the sun gear 031 and Z 2 is the number of teeth of the internal gear 033. The rotation speed of the prime mover 1 is i = i 1 x on the shaft 017.
The input shaft, that is, the sun roller 02 is rotated in the same direction by the rotation speed reduced by the reduction ratio of i 2 . However, in the above-described multi-stage speed reducer, the second stage planetary gear reducer 30, which is the latter stage of the two-stage speed reduction, is transmitted by the sun gear 031, the planetary gear 032, and the internal gear 033, so that large torque is transmitted. Although there is no problem, there is a problem that the rotation fluctuation peculiar to the gear and the vibration generated by the meshing of the teeth cannot be avoided. Recent precision mechanical devices are required to be devices that are free from fluctuations in rotation and vibration without reducing transmission torque, which is not satisfactory.

【0008】[0008]

【発明が解決しようとする課題】本発明は、上述の従来
装置の問題点を解消するため、トルクバランスの良い動
力伝達と、大きな出力軸トルクを得るとともに、回転変
動や振動の少ない動力伝達ができる多段遊星ローラ減速
機を提供することを課題とする。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the conventional device, the present invention provides a power transmission with good torque balance, a large output shaft torque, and a power transmission with less rotation fluctuation and vibration. An object of the present invention is to provide a multi-stage planetary roller speed reducer that can be used.

【0009】[0009]

【課題を解決するための手段】本発明の多段遊星ローラ
減速機は、入力軸及び出力軸並びにこれらの間に配設さ
れた中間キャリアをケース内の同一の直線まわりに回転
可能に軸承し、前段の減速部が、入力軸に設けられた第
一の太陽ローラの外周とケース内面に固定された第一の
内ローラの内周に圧接しながら回転する第一の遊星ロー
ラを中間キャリアのフランジ部に支持された第一の遊星
ピンに軸支して構成され、後段の減速部が、上記第1段
の遊星ローラ減速機の中間キャリア、又は第1段の遊星
ローラ減速機と同じ構造のものが、第1段の遊星ローラ
減速機に連設され多段とされたものにおいては、最終段
の遊星ローラ減速機の中間キャリア、に連結された第二
段の太陽ローラの外周、及びケースに固定された第二の
内ローラの内周、に圧接しながら回転する第二の遊星ロ
ーラを、上記出力軸のフランジ部に支持された遊星ピン
に軸支して構成された多段遊星ローラ減速機において、
上記入力軸側の減速部を含む前段の減速部の第一の内ロ
ーラが溝形断面形の円環状に形成され、内周面で周方向
に等ピッチに配設された複数個の第一の遊星ローラの外
周面と圧設し、最後段、即ち出力軸側の減速部の第二の
内ローラは矩形充実断面形の円環状に形成され、内周面
で周方向に等ピッチに配設された3個以上の第二の遊星
ローラの外周に圧接し、外周はケース内面と隙間をおい
て浮かして取り付けられ、第一の内ローラおよび第二の
内ローラの側面は同時に共通の締付け手段で押圧され
て、連れ回りを抑えてケース内に並設、保持される手段
とした。
In a multi-stage planetary roller speed reducer of the present invention, an input shaft, an output shaft, and an intermediate carrier arranged therebetween are rotatably supported about the same straight line in a case, The deceleration section in the preceding stage rotates the first planetary roller that rotates while pressingly contacting the outer circumference of the first sun roller provided on the input shaft and the inner circumference of the first inner roller fixed to the inner surface of the case. Of the first planetary roller supported by the first part of the first planetary pin, the rear stage speed reduction part has the same structure as the intermediate carrier of the first stage planetary roller speed reducer or the first stage planetary roller speed reducer. In the case of a multi-stage one that is connected to the first stage planetary roller reducer, the outer carrier of the second stage sun roller connected to the intermediate carrier of the final stage planetary roller reducer, and the case Inner circumference of the fixed second inner roller, A second planetary roller rotating while in pressure contact, in a multistage planetary roller reducer, which is constructed axially supported to the planetary pin supported in the flange portion of the output shaft,
The first inner roller of the deceleration portion of the preceding stage including the deceleration portion on the input shaft side is formed in an annular shape having a groove-shaped cross section, and a plurality of first inner rollers are arranged at equal pitches in the circumferential direction on the inner peripheral surface. Is pressed against the outer peripheral surface of the planetary roller, and the second inner roller in the final stage, that is, the output shaft side deceleration portion, is formed in an annular shape with a rectangular solid cross-section, and is arranged at equal intervals in the circumferential direction on the inner peripheral surface. It is pressed against the outer peripheries of three or more second planetary rollers that are installed, and the outer peripheries are floated with a gap from the inner surface of the case, and the side surfaces of the first inner roller and the second inner roller are simultaneously tightened in common. It is a means that is pressed by the means, is restrained from rotating together, and is arranged and held in parallel in the case.

【0010】[0010]

【作用】本発明の多段遊星ローラ減速機においては、前
段減速部の第一の内ローラを弾性に富む円環状ものと
し、最後段減速部の第二の内ローラをケース内側に外周
を浮かした矩形充実断面の円環状のものとして、それぞ
れ第一の遊星ローラ、第二の遊星ローラに圧接するよう
に、さらに第一の内ローラの側面と第二の内ローラの側
面を共通の締付手段で圧接し連れ回りを抑えたことによ
りトルクバランスのよい動力伝達と、多大の出力軸トル
クを得ることができる。また、第二の内ローラをケース
内側に外周を浮かせて配設することにより、第二の内ロ
ーラの内周面に同一円周上に3個以上等角配置された第
二の遊星ローラに圧接するとき、自動的に等しい圧接力
となるように芯合わせすることができる。また、全段が
遊星ローラを使用した減速機構にしたことにより加工精
度を高めることが可能で、回転変動や振動の少ない動力
伝達ができる。
In the multi-stage planetary roller speed reducer of the present invention, the first inner roller of the front speed reducer has an annular shape with high elasticity, and the second inner roller of the last speed reducer has its outer periphery floated inside the case. As a circular ring having a rectangular solid cross-section, the side surface of the first inner roller and the side surface of the second inner roller are commonly tightened so as to be in pressure contact with the first planetary roller and the second planetary roller, respectively. By press-contacting with and suppressing the accompanying rotation, power transmission with good torque balance and a large output shaft torque can be obtained. Further, by arranging the second inner roller so that the outer periphery is floated inside the case, it is possible to provide a second planetary roller equiangularly arranged on the inner circumference of the second inner roller. When press-contacting, the cores can be automatically aligned so that the same press-contacting force is obtained. Further, since the deceleration mechanism using the planetary rollers is used in all stages, it is possible to improve the processing accuracy, and it is possible to transmit power with less rotation fluctuation and vibration.

【0011】[0011]

【実施例】本発明の多段遊星ローラ減速機の実施例を図
面により説明する。図1は、本発明の一実施例としての
2段遊星ローラ減速機を示す図であって、1は電動モー
タ等の原動機、2は原動機1の回転軸30に連結され
た、第一の入力軸に設けられた太陽ローラ2、3はケー
ス12の内面に固着され、溝形断面形の円環状に形成さ
れ、回転軸心方向の押付力により、半径方向に変形する
ようにされた第一の内ローラ、4は第一の太陽ローラ2
の外周面と、第一の内ローラ3の内周面との間に形成さ
れる円環状の空間に等ピッチで配設され、外周面が第一
の太陽ローラの外周面と第一の内ローラ3の内周面とに
それぞれ圧接する第一の遊星ローラ、6は第一の遊星ロ
ーラ4の中心にあけられた貫通孔に設けられた軸受、7
は軸受6内に回動自在に挿通された遊星ピン、22は遊
星ピン7の一端がその周辺部を形成するフランジ部に固
着され、外周面がケース12の内周に装着されたローラ
ベアリング28に回動自在に支持され、中心部に設けら
れた突出部の先端が、出力軸25のキャリア25aの中
心にあけられた穴に装着されたローラベアリング41に
よって、回動自在に支持された中間キャリアである。第
一の太陽ローラ2、第一の内ローラ3、第一の遊星ロー
ラ4、軸受6、遊星ピン7、中間キャリア22によっ
て、前述した、従来例とほぼ同じ構成の第1段の遊星ロ
ーラ減速機構10が構成されている。また、22aは中
間キャリア22の中心部に突出して設けられた第1段の
遊星ローラ減速機構10の出力軸、換言すれば、第2段
の遊星ローラ減速機構20の入力軸、に設けられた第二
の太陽ローラ、23はその外周がケース12の内周と隙
間を持たせて配設され、その側面で固定されている、矩
形充実断面形の円環状の第二の内ローラで、前述の第一
内ローラ3とは、その断面にU字形溝が設けられていな
いことが構造上異っている。24は第二の太陽ローラ2
2aの外周と第二の内ローラ23の内周との間の円周上
に3個以上等角配設され、これらに圧接しながら回転す
る第二の遊星ローラである。同遊星ローラ24は、出力
軸25のフランジ部25aをキャリアとして円周方向等
間隔に3個以上固着された遊星ピン27に、軸受26を
介して軸支されている。また、出力軸25は、出力軸の
フランジ部25aの外周とケース12の内周との間に介
装されたローラベアリング28と、ケース12の先端の
軸受筺部に装着された、ローラベアリング29により回
転自由に支えられている。上記第二の太陽ローラ22
a、第二の内ローラ23と第二の遊星ローラ24とは、
互いに強く圧接するような寸法に仕上げてあり、これら
と軸受26、遊星ピン27及びキャリアとしての出力軸
25のフランジ部25aによって、第2段の遊星ローラ
減速機構20が構成されている。さらに第一の内ローラ
3、ローラベアリング28、間座42、第二の内ローラ
23、およびローラベアリング28は同時に共通の締付
手段としてのボルト14によって、ケース12と原動機
1のフランジ部1a締付けられ、内ローラ3は溝を狭め
られ内周半径が小さくなる方向に変形して第一の遊星ロ
ーラ4及び第一の太陽ローラ2との間に動力伝達に必要
な圧接力を生ずるとともに、第二の内ローラ23は側面
を押されて、第二の遊星ローラ24と連れ回りをしない
摩擦力が付与される。これらの第一および第二の内ロー
ラ3,23の側面に作用する締付け力の調整は、シム1
3の厚さを加減することによって行う。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-stage planetary roller speed reducer according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a two-stage planetary roller speed reducer as an embodiment of the present invention, in which 1 is a prime mover such as an electric motor and 2 is a first input connected to a rotary shaft 30 of the prime mover 1. The sun rollers 2 and 3 provided on the shaft are fixed to the inner surface of the case 12, are formed in an annular shape having a groove-shaped cross section, and are deformed in the radial direction by a pressing force in the direction of the rotation axis. Inner roller, 4 is the first sun roller 2
Are arranged at equal pitches in an annular space formed between the outer peripheral surface of the first inner roller 3 and the inner peripheral surface of the first inner roller 3. A first planetary roller, which comes into pressure contact with the inner peripheral surface of the roller 3, 6 is a bearing provided in a through hole formed in the center of the first planetary roller 4, 7
Is a planetary pin rotatably inserted in the bearing 6, and 22 is a roller bearing 28 in which one end of the planetary pin 7 is fixed to a flange portion forming a peripheral portion thereof and an outer peripheral surface thereof is attached to an inner periphery of the case 12. Is rotatably supported by a roller bearing 41 mounted in a hole formed in the center of the carrier 25a of the output shaft 25 so that the tip end of the protrusion provided in the center is rotatably supported by the intermediate portion. Be a carrier. The first sun roller 2, the first inner roller 3, the first planetary roller 4, the bearing 6, the planetary pin 7, and the intermediate carrier 22 reduce the speed of the first-stage planetary roller, which has substantially the same configuration as the conventional example described above. The mechanism 10 is configured. Further, 22a is provided on the output shaft of the first-stage planetary roller reduction mechanism 10 provided in a projecting manner at the center of the intermediate carrier 22, in other words, on the input shaft of the second-stage planetary roller reduction mechanism 20. The second sun roller 23 is an annular second inner roller having a rectangular solid cross section, the outer periphery of which is disposed with a gap from the inner periphery of the case 12 and is fixed on the side surface thereof. The first inner roller 3 is structurally different from the first inner roller 3 in that a U-shaped groove is not provided in its cross section. 24 is the second sun roller 2
This is a second planetary roller which is arranged equiangularly on the circumference between the outer circumference of 2a and the inner circumference of the second inner roller 23, and rotates while being pressed against these. The planetary roller 24 is rotatably supported by bearings 26 on three or more planetary pins 27 fixed at equal intervals in the circumferential direction with the flange portion 25a of the output shaft 25 as a carrier. The output shaft 25 includes a roller bearing 28 interposed between the outer circumference of the flange portion 25 a of the output shaft and the inner circumference of the case 12, and a roller bearing 29 mounted on the bearing housing portion at the tip of the case 12. It is rotatably supported by. The second sun roller 22
a, the second inner roller 23 and the second planetary roller 24 are
The dimensions of the bearings 26, the planet pins 27, and the flange portion 25a of the output shaft 25 serving as a carrier constitute the second stage planetary roller reduction mechanism 20. Further, the first inner roller 3, the roller bearing 28, the spacer 42, the second inner roller 23, and the roller bearing 28 are simultaneously tightened by the bolt 14 as a common tightening means to tighten the case 12 and the flange portion 1a of the prime mover 1. Then, the inner roller 3 is deformed in the direction in which the groove is narrowed and the inner circumferential radius becomes smaller, and a pressure contact force necessary for power transmission is generated between the first planetary roller 4 and the first sun roller 2, and The side surface of the second inner roller 23 is pushed, and a frictional force that does not rotate with the second planetary roller 24 is applied. Adjustment of the tightening force acting on the side surfaces of the first and second inner rollers 3, 23 is performed by the shim 1
This is done by adjusting the thickness of 3.

【0012】上記2段遊星ローラ減速機において、原動
機1の回転軸に連結された入力軸により第一の太陽ロー
ラ2が回転すると、第一の遊星ローラ4が第一の太陽ロ
ーラ2と第一の内ローラ3との間を自転しながら公転す
る。その結果、第一の遊星ローラ4の公転速度に減速さ
れた動力が中間キャリア22の中央部に設けた突出部、
即ち第1段の遊星ローラ減速機構10の出力軸、換言す
れば第2段の遊星ローラ減速機構20の入力軸、を介し
て第二の太陽ローラ22aに伝達される。
In the above two-stage planetary roller reducer, when the first sun roller 2 is rotated by the input shaft connected to the rotation shaft of the prime mover 1, the first planetary roller 4 and the first sun roller 2 are connected to each other. It revolves while rotating between itself and the inner roller 3. As a result, the power reduced to the revolution speed of the first planetary roller 4 causes the protrusion provided at the center of the intermediate carrier 22,
That is, it is transmitted to the second sun roller 22a via the output shaft of the first stage planetary roller reduction mechanism 10, in other words, the input shaft of the second stage planetary roller reduction mechanism 20.

【0013】同様に、第2段遊星ローラ減速機構20に
おいても、中間キャリア22の回転により第二の太陽ロ
ーラ22aが回転すると、第二の遊星ローラ24が第二
の太陽ローラ22aと第二の内ローラ23との間を自転
しながら公転し、出力軸25に設けられたフランジ25
aからは第二の遊星ローラ24の公転速度に減速された
動力が取り出されて出力軸25に伝達される。
Similarly, in the second stage planetary roller speed reduction mechanism 20, when the second sun roller 22a rotates due to the rotation of the intermediate carrier 22, the second planetary roller 24 causes the second sun roller 22a and the second sun roller 22a to rotate. The flange 25 provided on the output shaft 25 revolves while rotating between itself and the inner roller 23.
The power reduced to the revolution speed of the second planetary roller 24 is extracted from a and transmitted to the output shaft 25.

【0014】遊星ローラ減速機の減速比は、前述の
(1)式で説明したように、第1段の遊星ローラ減速機
構10および第2段の遊星ローラ減速機構20でそれぞ
れ、 減速比=太陽ローラの外径/(太陽ローラの外径+内ロ
ーラの内径) が得られ、2段の減速の場合は、大体1/10乃至1/
100の減速比が得られる。さらに、第2段の遊星ロー
ラ減速機構20において伝達されるトルクは、第1段の
遊星ローラ減速機構10において伝達されるトルクを減
速比の逆数倍した値となり、各ローラ間の転がり摩擦力
を大きくするために圧接力を大きくする必要がある。本
実施例のように、第二の内ローラ23を剛性の大きい矩
形充実断面の円環状の内ローラとし、組合わせのときに
第二の太陽ローラ22aと第二の遊星ローラ24を配置
した後、第二の内ローラ23を強く圧入し、各ローラ間
に大きな圧接力を加えて置けば、大トルクの伝達が可能
となる。また、第二の内ローラ23の外周とケース12
の内周とは隙間が設けてあり、第二の内ローラ23は半
径方向を拘束されず、上記のように各ローラを圧接した
とき自動的に芯合わせが可能である。
The speed reduction ratio of the planetary roller speed reducer is, as described in the equation (1), for the first stage planetary roller speed reduction mechanism 10 and the second stage planetary roller speed reduction mechanism 20, respectively. The outer diameter of the roller / (outer diameter of the sun roller + inner diameter of the inner roller) can be obtained.
A reduction ratio of 100 is obtained. Further, the torque transmitted in the second stage planetary roller reduction mechanism 20 becomes a value obtained by multiplying the torque transmitted in the first stage planetary roller reduction mechanism 10 by the reciprocal of the reduction ratio, and the rolling frictional force between the rollers. It is necessary to increase the pressure contact force in order to increase. After the second inner roller 23 is an annular inner roller having a rectangular cross section with high rigidity as in this embodiment, and the second sun roller 22a and the second planetary roller 24 are arranged at the time of combination. If the second inner roller 23 is strongly press-fitted and a large pressure contact force is applied between the rollers, a large torque can be transmitted. In addition, the outer circumference of the second inner roller 23 and the case 12
There is a gap from the inner circumference of the second inner roller 23, and the second inner roller 23 is not constrained in the radial direction, and when the rollers are pressed against each other as described above, they can be automatically aligned.

【0015】なお、上記実施例において説明した第1段
の遊星ローラ減速機構の出力軸に、さらに第一の太陽ロ
ーラ、第一の内ローラ、第一の遊星ローラ、軸受、遊星
ピンおよび中間キャリアからなる、上述した第1段の遊
星ローラ減速機構と同等の遊星ローラ減速機構を複数段
設けて、これを前段の減速となし、前段の減速部の最終
段の中間キャリアに設けた出力軸から第二の太陽ローラ
に動力を伝達し、第2段の遊星ローラ減速機構、即ち最
後段の減速部でさらに減速する3段以上の遊星ローラ減
速機にすることも、本発明の技術的範囲に含まれるもの
である。
The first sun roller, the first inner roller, the first planetary roller, the bearing, the planetary pin and the intermediate carrier are further provided on the output shaft of the first stage planetary roller reduction mechanism described in the above embodiment. A plurality of stages of planetary roller reduction gears equivalent to the above-described first stage planetary roller reduction gears are provided, and this is used as the preceding stage deceleration, and the output shaft provided in the intermediate carrier at the final stage of the preceding stage deceleration unit is used. It is also within the technical scope of the present invention to use a second stage planetary roller reduction mechanism that transmits power to the second sun roller, that is, a planetary roller reduction gear having three or more stages for further reducing the speed at the final stage reduction unit. It is included.

【0016】[0016]

【発明の効果】上述したように、本発明の多段遊星ロー
ラ減速機によれば、前段減速部の第一の内ローラを弾性
に富む円環状に形成し、最後段減速部の第二の内ローラ
の外周を、ケース内側に隙間を設けて設置した、矩形充
実断面の円環状のものとして、それぞれ第一および第二
の遊星ローラに圧接し、さらに第一の内ローラ側面と第
二の内ローラ側面を共通の締付手段で圧接して連れ回り
を抑えた。これにより、トルクバランスのよい動力伝達
と、大きな出力軸トルクを得ることができるとともに、
第二の内ローラをその内周に等ピッチに配置される第二
の遊星ローラに圧接するとき、自動的に等しい圧接力と
なるように芯合せが出来、製作がきわめて容易になる。
また、全段を遊星ローラを使用した減速機構にしたこと
により、加工精度を高めることが可能で、回転変動や振
動の少ない動力伝達が可能となる。
As described above, according to the multi-stage planetary roller speed reducer of the present invention, the first inner roller of the front speed reducer is formed in an annular shape having a high elasticity, and the second inner roller of the last speed reducer is used. The outer circumference of the roller is an annular shape with a rectangular solid cross section, which is installed inside the case with a gap, and is pressed against the first and second planetary rollers, respectively, and further, the first inner roller side surface and the second inner roller side. The side surfaces of the rollers are pressed against each other with a common tightening means to suppress the rotation. As a result, power transmission with good torque balance and large output shaft torque can be obtained, and
When the second inner roller is brought into pressure contact with the second planetary rollers arranged at equal pitches on the inner circumference of the second inner roller, centering can be automatically performed so as to have the same pressure contact force, and the production is extremely easy.
In addition, by using a speed reduction mechanism that uses planetary rollers in all stages, it is possible to increase processing accuracy, and it is possible to transmit power with less rotation fluctuation and vibration.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の多段遊星ローラ減速機の一実施例とし
ての、2段遊星ローラ減速機の側断面図。
FIG. 1 is a side sectional view of a two-stage planetary roller reducer as an example of a multi-stage planetary roller reducer of the present invention.

【図2】従来の遊星ローラを使用した2段減速機の側断
面図。
FIG. 2 is a side sectional view of a two-stage speed reducer using a conventional planetary roller.

【符号の説明】[Explanation of symbols]

1 原動機 1a 原動機のフランジ 2 第一の太陽ローラ 3 第一の内ローラ 4 第一の遊星ローラ 6,26 軸受 2,27 遊星ピン 10 第1段の遊星ローラ減速機構 12 ケース 13 シム 14 共通の締付手段としてのボルト 20 第2段の遊星ローラ減速機構 22 中間キャリア 22a 第二の太陽ローラ 23 第二の内ローラ 24 第二の遊星ローラ 25 出力軸 25a 出力軸のフランジ部 28,29,41 ローラベアリング 30 回転軸 42 間座 1 prime mover 1a prime mover flange 2 first sun roller 3 first inner roller 4 first planetary roller 6,26 bearing 2,27 planetary pin 10 first stage planetary roller reduction mechanism 12 case 13 shim 14 common tightening A bolt as an attaching means 20 Second stage planetary roller reduction mechanism 22 Intermediate carrier 22a Second sun roller 23 Second inner roller 24 Second planetary roller 25 Output shaft 25a Output shaft flange portion 28, 29, 41 roller Bearing 30 Rotating shaft 42 Spacer

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 入力軸及び出力軸、並びにこれらの間に
配設された中間キャリアをケース内に同軸線上に回転可
能に軸承し、前記入力軸に設けられた第一の太陽ローラ
の外周と前記ケース内に固定された第一の内ローラの内
周とで圧接され回転する第一の遊星ローラを、前記中間
キャリアのフランジ部に支持された第一の遊星ピンに軸
支し、前記中間キャリアに連結された第二の太陽ローラ
の外周と前記ケース内に固定された第二の内ローラの内
周とで圧接され回転する第二の遊星ローラを、前記出力
軸に設けたフランジ部に支持された第二の遊星ピンに軸
支してなる多段遊星ローラ減速機において、前記第1の
内ローラは溝形断面形を有する円環状に形成され、前記
第二の内ローラは矩形充実断面形を有する円環状に形成
され、内周面が周方向に等ピッチに配設された少くとも
3個の第二の遊星ローラと圧接され、外周面が前記ケー
スの内周面と間隙をおいて配設されるとともに、前記第
一の内ローラおよび第二の内ローラの側面が共通の締付
手段により押圧保持されて前記ケース内に並設されてい
ることを特徴とする多段遊星ローラ減速機。
1. An input shaft, an output shaft, and an intermediate carrier arranged between the input shaft and the output shaft, which are rotatably supported on a coaxial line in a case, and the outer periphery of a first sun roller provided on the input shaft. A first planetary roller, which is pressed against the inner circumference of a first inner roller fixed in the case and rotates, is axially supported by a first planetary pin supported by a flange portion of the intermediate carrier, A second planetary roller that is pressed and rotated by the outer circumference of the second sun roller connected to the carrier and the inner circumference of the second inner roller fixed in the case is attached to the flange portion provided on the output shaft. In a multi-stage planetary roller reducer axially supported by a supported second planet pin, the first inner roller is formed in an annular shape having a groove-shaped cross section, and the second inner roller is a rectangular solid cross section. It is formed in an annular shape with an inner peripheral surface Is in pressure contact with at least three second planetary rollers arranged at equal pitches, the outer peripheral surface is arranged with a gap from the inner peripheral surface of the case, and the first inner roller and A multi-stage planetary roller speed reducer, wherein the side surface of the second inner roller is pressed and held by a common tightening means and arranged in parallel in the case.
JP20324393A 1993-08-17 1993-08-17 Multi-step planetary roller reduction machine Withdrawn JPH0754946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20324393A JPH0754946A (en) 1993-08-17 1993-08-17 Multi-step planetary roller reduction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20324393A JPH0754946A (en) 1993-08-17 1993-08-17 Multi-step planetary roller reduction machine

Publications (1)

Publication Number Publication Date
JPH0754946A true JPH0754946A (en) 1995-02-28

Family

ID=16470809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20324393A Withdrawn JPH0754946A (en) 1993-08-17 1993-08-17 Multi-step planetary roller reduction machine

Country Status (1)

Country Link
JP (1) JPH0754946A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036954A2 (en) * 1999-03-16 2000-09-20 Sumitomo Heavy Industries, Ltd. Oscillating internally meshing planetary gear unit and planetary roller mechanism
JP2002064129A (en) * 2000-08-22 2002-02-28 Teijin Seiki Co Ltd Transfer device using traction driving reducer
WO2012014611A1 (en) 2010-07-26 2012-02-02 株式会社豊田中央研究所 Traction drive mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036954A2 (en) * 1999-03-16 2000-09-20 Sumitomo Heavy Industries, Ltd. Oscillating internally meshing planetary gear unit and planetary roller mechanism
EP1036954A3 (en) * 1999-03-16 2002-11-13 Sumitomo Heavy Industries, Ltd. Oscillating internally meshing planetary gear unit and planetary roller mechanism
JP2002064129A (en) * 2000-08-22 2002-02-28 Teijin Seiki Co Ltd Transfer device using traction driving reducer
JP4578649B2 (en) * 2000-08-22 2010-11-10 ナブテスコ株式会社 Conveying device using traction drive reducer
WO2012014611A1 (en) 2010-07-26 2012-02-02 株式会社豊田中央研究所 Traction drive mechanism
US8771126B2 (en) 2010-07-26 2014-07-08 Kabushiki Kaisha Toyota Chuo Kenkyusho Traction drive mechanism

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