JPS62171565A - Turning device for industrial robot - Google Patents

Turning device for industrial robot

Info

Publication number
JPS62171565A
JPS62171565A JP1099286A JP1099286A JPS62171565A JP S62171565 A JPS62171565 A JP S62171565A JP 1099286 A JP1099286 A JP 1099286A JP 1099286 A JP1099286 A JP 1099286A JP S62171565 A JPS62171565 A JP S62171565A
Authority
JP
Japan
Prior art keywords
gear
swing
gears
fixed gear
power transmission
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.)
Granted
Application number
JP1099286A
Other languages
Japanese (ja)
Other versions
JPH0743028B2 (en
Inventor
Akira Uchida
内田 晃
Isao Tsuji
辻 功
Masayuki Oshiro
昌之 大城
Shigemi Igarashi
五十嵐 成己
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP61010992A priority Critical patent/JPH0743028B2/en
Publication of JPS62171565A publication Critical patent/JPS62171565A/en
Publication of JPH0743028B2 publication Critical patent/JPH0743028B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To simplify the maintenance of a motor, by transmitting a power of a turn driving motor provided on an outer wall of a turning frame by means of two power transmitting systems. CONSTITUTION:A turning device includes a fixed gear 20, two gears 21 and 22, a turn driving motor 23, two power transmitting systems 24 and 25, and a backlash removing mechanism 26. When the turn driving motor 23 is driven, the power is reduced by the two power transmitting systems having drive pulleys 31 and 32, wrapping connector members 35, driven pulleys 33 and 34 and intermediate gears 36, and is transmitted to the two gears 21 and 22 meshing with the fixed gear 20. As a result, the two gears 21 and 22 are rotated and revolved around the fixed gear 20, and a turning frame 21 is rotated relative to a base 11. As the motor 23 is provided on an outer wall of the turning frame 12, the motor 23 may be mounted and demounted, thus making the maintenance easy.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は産業用ロボットの旋回装置に係り、特に旋回装
置の構造の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a swing device for an industrial robot, and more particularly to an improvement in the structure of a swing device.

〔発明の背景〕[Background of the invention]

第7図は産業用ロボットの旋回装置の従来例を示してい
る。この旋回装置は、ベース1と、ベース1に軸受3,
4を介して回転自在に支持された旋回枠2と、旋回駆動
用モータ5と、そのモータ5の動力を減速しかつ旋回枠
2に伝達する減速機6とを備えて構成されている。
FIG. 7 shows a conventional example of a rotating device for an industrial robot. This rotating device includes a base 1, a bearing 3 on the base 1,
4, a swing drive motor 5, and a speed reducer 6 that reduces the power of the motor 5 and transmits it to the swing frame 2.

減速機6は、旋回駆動用モータ5の出力軸に装着された
楕円状の減速機回転体7と、その減速機回転体7の外周
に嵌着されたボールベアリング(図示せず)と、これの
外周に一端部が装着されかつ他端部が旋回枠2に設けら
れた入力軸1aと連結されたフレックススプライン8と
、これの外周に設けられた外歯と噛合する内歯を内周に
有し、かつベース1の内方に設けられた支持部1bに固
定されたサーキュラスプライン9とを備え、駆動モータ
5によって減速機回転体7が駆動されると、その動力が
ボールベアリング、フレックススプライン8の順に伝達
され、フレックススプライン8に伝達された動力が、ボ
ールベアリングとサーキュラスプライン9間で減速され
て、旋回枠2の入力軸1aに伝達されるようにしている
The reducer 6 includes an elliptical reducer rotating body 7 attached to the output shaft of the swing drive motor 5, a ball bearing (not shown) fitted to the outer periphery of the reducer rotating body 7, and a ball bearing (not shown) fitted to the outer periphery of the reducer rotating body 7. A flex spline 8 has one end attached to the outer periphery of the flex spline 8 and the other end connected to the input shaft 1a provided on the rotating frame 2, and internal teeth that mesh with the external teeth provided on the outer periphery of the flex spline 8 are attached to the inner periphery. and a circular spline 9 fixed to a support portion 1b provided inside the base 1. When the reducer rotor 7 is driven by the drive motor 5, the power is transferred to the ball bearing and the flex spline. 8, and the power transmitted to the flex spline 8 is decelerated between the ball bearing and the circular spline 9, and is transmitted to the input shaft 1a of the rotating frame 2.

旋回駆動用モータ5はベース1の内方位置に設置されて
いる。
The swing drive motor 5 is installed at an inner position of the base 1.

ところで、上記に示す従来の旋回装置は、減速機6の構
成部品及び旋回枠2の入力軸1aが同軸線上に配置され
ているので、小形化できる利点がある。
By the way, the conventional swing device shown above has the advantage that it can be made smaller because the components of the speed reducer 6 and the input shaft 1a of the swing frame 2 are arranged on the same axis.

しかし乍ら、このタイプの減速機6には動力伝達経路に
組立上、止むを得ないガタがあり、そのため、旋回装置
自体の精度に限界をきたし、ロボットをより高精度にし
難い問題がある。
However, this type of reducer 6 has an unavoidable play in the power transmission path during assembly, which limits the accuracy of the swing device itself, making it difficult to make the robot more accurate.

また、旋回駆動用モータ5がベース1内に設置されてい
るので、モータ5をメインテナンスする場合、ロボット
全体を倒してから取出さなければならず、そのため、元
々重量のあるロボットでは倒すのに手間がかかるばかり
でなく、ロボットを倒す際のスペースを考慮しなければ
ならず、しかもそれだけロスタイムが長くなる等の問題
がある。
In addition, since the swing drive motor 5 is installed inside the base 1, when maintaining the motor 5, it is necessary to take it out after knocking down the entire robot, which makes it difficult to take out the robot, which is originally heavy. Not only does it take a lot of time, but the space for defeating the robot must also be taken into consideration, and there are problems such as the loss time becomes longer.

なお、この種の旋回装置の公知技術としては、特開昭5
9−019695号公報に開示されたものがある。
Note that the known technology for this type of turning device is disclosed in Japanese Patent Application Laid-open No. 5
There is one disclosed in Publication No. 9-019695.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、前記従来技術の問題点を解消し、動力
伝達経路のガタをなくし、また旋回駆動用モータのメン
テナンスを簡単に行え、しかも剛性を高め得る産業用ロ
ボットの旋回#A置を提供することにある。
An object of the present invention is to solve the problems of the prior art described above, to eliminate backlash in the power transmission path, to easily maintain the swing drive motor, and to provide a swing #A position for an industrial robot that can increase rigidity. It is about providing.

〔発明の概要〕[Summary of the invention]

本発明は (i)  ベースに固定された固定歯車と。 The present invention (i) A fixed gear fixed to the base.

(ii)  該固定歯車の周りに互いに間隔をおいて配
置され、かつ固定歯車と噛合し、前記旋回枠に軸支され
た2個の歯車と、 (iii)  前記旋回枠の外壁に取付けられた旋回駆
動用モータと、 (iv)  該旋回駆動用モータの出力軸に取付けられ
た2個の主動側プーリと、前記各歯車の近傍に配置され
かつ前記旋回枠に軸支された2個の従動側プーリと、主
動側プーリ及び従動側ブーり間に掛け渡された巻掛伝動
部材と、各従動側プーリ及びこれと対応する前記各歯車
間に設けられた中間歯車とを有して構成され、かつ前記
旅回IW動用モータの動力を減速して前記固定歯車と噛
合する歯車に伝達する2系組の動力伝達系と、 (v) この2系統の動力伝達系の少なくとも1個所に
設けられたバックラッシュ除去手段と。
(ii) two gears disposed at intervals around the fixed gear, meshing with the fixed gear, and pivotally supported on the rotating frame; (iii) attached to an outer wall of the rotating frame; (iv) two main drive pulleys attached to the output shaft of the swing drive motor, and two driven pulleys disposed near each of the gears and pivotally supported on the swing frame; It is constituted by a side pulley, a wrapped transmission member stretched between a driving side pulley and a driven side boolean, and an intermediate gear provided between each driven side pulley and each gear corresponding to the driven side pulley. , and a two-system power transmission system that decelerates the power of the traveling IW motor and transmits it to a gear that meshes with the fixed gear, (v) provided at at least one location of the two power transmission systems. and backlash removal means.

を備えていることに特徴を有し、これによって前記の目
的を達成できたものである。
It is characterized in that it is equipped with the following, and thereby the above-mentioned object can be achieved.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施の一例を第1図乃至第6図について
説明する。第1図は本発明の第1の実施例を示す断面図
、第2図は2系統の動力伝達系を示す第1図のA−A線
に相当する矢視図、第3図は第2図のB−B線に相当す
る断面図、第4図は第2図のC−C線に相当する断面図
、第5図は第4図のD矢視に相当する平面図、第6図は
2系統の動力伝達系の歯車とベースの固定歯車とのバッ
クラッシュ除去状態を示す説明図である。
An example of the implementation of the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 is a cross-sectional view showing a first embodiment of the present invention, FIG. 2 is a view taken along the line A-A in FIG. 1 showing a two-system power transmission system, and FIG. 4 is a sectional view corresponding to line C-C in FIG. 2, FIG. 5 is a plan view corresponding to arrow D in FIG. 4, and FIG. FIG. 2 is an explanatory diagram showing a state in which backlash is removed between the gears of two power transmission systems and the fixed gear of the base.

第1図に示される産業用ロボットの旋回装置は。The turning device of the industrial robot shown in FIG.

ベース11に旋回枠12が回転自在に支持されて構成さ
れている。
A rotating frame 12 is rotatably supported on a base 11.

前記ベース11には軸受13の内輪と嵌合する周壁14
が形成され、その周壁14がわに支持軸15が同軸上に
固定され、一方旋回枠12の上下位置には軸受13及び
16の外輪と嵌合する周壁17.18が形成され。
The base 11 has a peripheral wall 14 that fits into the inner ring of the bearing 13.
A supporting shaft 15 is coaxially fixed to the circumferential wall 14, and circumferential walls 17 and 18 are formed at the upper and lower positions of the rotating frame 12 to fit with the outer rings of the bearings 13 and 16.

その周壁17が軸受13を介してベース11の嵌合壁1
4に支持され、かつ周壁18が軸受16を介してベース
11の支持軸】5に支持されている。
The peripheral wall 17 is connected to the fitting wall 1 of the base 11 via the bearing 13.
4, and the peripheral wall 18 is supported by the support shaft 5 of the base 11 via a bearing 16.

そして、前記旋回装置は、固定歯車20と、2個の歯車
21.22と、旋回駆動用モータ23と、2系統の動力
伝達系24.25と、バックラッシュ除去機構26とを
備えている。
The swing device includes a fixed gear 20, two gears 21, 22, a swing drive motor 23, two power transmission systems 24, 25, and a backlash removal mechanism 26.

前記固定歯車20は第1図、第2図に明示されるように
、ベース11の支持軸15に同軸上に固定されていて、
外周に外歯が形成されている。
As clearly shown in FIGS. 1 and 2, the fixed gear 20 is coaxially fixed to the support shaft 15 of the base 11,
External teeth are formed on the outer periphery.

前記2個の歯車21.22は、第1図乃至第4図に示さ
れるように、各々が保持具27に軸受28.29を介し
て取付けられた第1シヤフト30に軸支されている。保
持具27は旅回枠12の内部位置に設けられている。
As shown in FIGS. 1 to 4, the two gears 21 and 22 are each pivotally supported by a first shaft 30 that is attached to the holder 27 via bearings 28 and 29. The holder 27 is provided inside the travel frame 12.

そして、歯車21.22の外周にはベース11の固定歯
車20と噛合する外歯が設けられている。
External teeth that mesh with the fixed gear 20 of the base 11 are provided on the outer periphery of the gears 21 and 22.

さらに、前記2個の歯車21.22は、固定歯車20の
周りに互いに間隔をおいて配置され、例えば第2図に示
されるように互いに略対向する位置に配置されている。
Further, the two gears 21, 22 are arranged around the stationary gear 20 at a distance from each other, and are arranged substantially opposite each other, as shown in FIG. 2, for example.

前記旋回駆動用モータ23は、その出力軸を旅回枠11
の内方に向けて、旅回枠■1の外壁に設置されている。
The rotation drive motor 23 has its output shaft connected to the travel frame 11.
It is installed on the outer wall of travel frame ■1, facing inward.

前記2系統の動力伝達系24.25は、主動側プーリ3
1,32と、従動側プーリ33.34と、巻掛伝動部材
35.35と、中間歯車36.36とを有して構成され
ている。
The two power transmission systems 24 and 25 are connected to the main drive pulley 3.
1, 32, a driven pulley 33.34, a winding transmission member 35.35, and an intermediate gear 36.36.

即ち、主動側プーリ3+、 32は施回駆勅用モータ2
3の出力軸に取付けられている。
That is, the main drive side pulleys 3+ and 32 are the rotation drive motor 2.
It is attached to the output shaft of 3.

一方の従動側プーリ33は、第3図に示されるように、
旅回枠12の保持具27に軸受37.38を介して取付
けられた第2シヤフト39にキー止め等によって軸支さ
れ、他方の従動側プーリ34は、第4図に示されるよう
に、一方の従動側プーリ33がわと同様にして取付けら
れた第2シヤフト39に後述するバックラッシュ除去機
構26を介して軸支され、かつ夫々は各歯車21.22
の近傍位置に配置されている。
As shown in FIG. 3, one of the driven pulleys 33 is
The second shaft 39 is attached to the holder 27 of the travel frame 12 via bearings 37 and 38, and is supported by a key or the like, and the other driven pulley 34 is attached to one side as shown in FIG. The driven pulley 33 is pivotally supported via a backlash removal mechanism 26, which will be described later, on a second shaft 39 attached in the same manner as the driven pulley 33 of the
It is located near the .

巻掛伝動部材35.35は夫々が主動側プーリ31゜3
2及び従動側プーリ33.34間に掛け渡されており、
旋回駆動用モータ23の駆動時、主動側プーリ31゜3
2の動力を従動側プーリ33.34に伝達するようにベ
ルトで構成されているに の巻掛伝動部材35にはその巻掛伝動部材のテンション
を調節する調節機構42が設けられている。
The winding transmission members 35 and 35 each have a main drive side pulley 31°3.
2 and the driven pulley 33, 34,
When driving the swing drive motor 23, the main drive side pulley 31°3
The winding transmission member 35, which is constructed of a belt, is provided with an adjustment mechanism 42 for adjusting the tension of the winding transmission member 35, which transmits the power of the belt to the driven pulleys 33, 34.

調節機構42.42は夫々が軸受からなるテンション部
材43と、このテンション部材を搭載しかつ旅回枠12
内において巻掛伝動部材35と交差方向に移動可能に取
付けられた搭載台44とを備え、搭載台44の位置決め
によって夫々のテンション部材43が巻掛伝動部材35
の各々に同程度のテンションを与えて、巻掛伝動部材3
5.35の双方が同位相で動力伝動するようにしている
The adjustment mechanism 42 , 42 includes a tension member 43 each made of a bearing, and a tension member 43 mounted on the tension member and mounted on the travel frame 12 .
The tension member 43 is provided with a winding transmission member 35 and a mounting base 44 mounted so as to be movable in the transverse direction.
Applying the same tension to each of the wrapped transmission members 3
5.35 so that power is transmitted in the same phase.

中間歯車36.36は夫々が保持具27内において第2
シヤフト39に軸支された第1ギヤ40と、その第1ギ
ヤ40と噛合しかつ第1シヤフト30に軸支された第2
ギヤ41とを有して構成されている。
The intermediate gears 36, 36 each have a second position within the retainer 27.
A first gear 40 is pivotally supported by the shaft 39, and a second gear 40 is meshed with the first gear 40 and is pivotally supported by the first shaft 30.
It is configured to have a gear 41.

前記2系統の動力伝達系24.25は、旋回駆動用モー
タ2によって主動側プーリ31.32が、駆動されると
、巻掛伝動部材35を介して従動側プーリ33゜34が
夫々回転し、その回転により中間歯車36の第1ギヤ4
0.第2ギヤ41を介して各歯車21.22が回転する
ことにより、旋回駆動用モータ23の動力を減速して各
歯車21.22に伝達するようにしている。
In the two power transmission systems 24 and 25, when the driving pulleys 31 and 32 are driven by the swing drive motor 2, the driven pulleys 33 and 34 are rotated via the winding transmission member 35, respectively. The rotation causes the first gear 4 of the intermediate gear 36 to
0. By rotating each gear 21.22 via the second gear 41, the power of the swing drive motor 23 is decelerated and transmitted to each gear 21.22.

前記バックラッシュ除去機構26は、第4図、第5図に
示されるように、一方の動力伝達系25の第2シヤフト
39に軸支されかつ軸線を中心とする周りに設けられた
複数の長孔45を有するフランジ46と、そのフランジ
46に長孔45より従動側プーリ34を締結するボルト
47とを有している。このバンクラッシュ除去機構26
は、旋回装置の組付けの際、予めボルト47を緩めてお
き、固定歯車20の歯面に対し歯車21の歯面において
回転方向の前部を突き当てたとき、歯車22の歯面にお
いて回転方向の後部をこれと対応する固定歯車20の歯
面に突き当てた状態にし、ボルト47でフランジ46と
従動側プーリ34とを位置決め固定することにより、各
歯車21゜22及び固定歯車20間のバックラッシュを
取り除くようにしている。
As shown in FIGS. 4 and 5, the backlash removal mechanism 26 includes a plurality of lengths that are pivotally supported by the second shaft 39 of one of the power transmission systems 25 and provided around the axis. It has a flange 46 having a hole 45 and a bolt 47 for fastening the driven pulley 34 to the flange 46 through the elongated hole 45. This bank crash removal mechanism 26
When assembling the turning device, when the bolt 47 is loosened in advance and the front part of the tooth surface of the gear 21 in the rotational direction butts against the tooth surface of the fixed gear 20, the rotation occurs on the tooth surface of the gear 22. By placing the rear part of the direction in contact with the tooth surface of the corresponding fixed gear 20, and positioning and fixing the flange 46 and the driven pulley 34 with the bolts 47, the distance between each gear 21, 22 and the fixed gear 20 is I try to eliminate backlash.

次に、バックラッシュ除去の具体例を述べる。Next, a specific example of backlash removal will be described.

まず、2系統の動力伝達系24.25の各巻掛伝動部材
35.35に調節機構42.42によって適度なテンシ
ョンを与えた後、旋回駆動用モータ23の出力軸紮第2
図に示す矢印り方向に手動で回転して、第6図に示すよ
うに一方の動力伝達系24の歯車21の歯面をベース1
1の固定歯車20の歯面に突き当てさせ、この状態で旋
回駆動用モータ23の出力軸をロックする。
First, after applying appropriate tension to each wrapped transmission member 35.35 of the two power transmission systems 24.25 by the adjustment mechanism 42.42, the output shaft of the swing drive motor 23 is adjusted to the second position.
Rotate manually in the direction of the arrow shown in the figure to align the tooth surface of the gear 21 of one power transmission system 24 with the base 1
1 and the output shaft of the swing drive motor 23 is locked in this state.

これにより、一方の動力伝達系24の第1ギヤ40及び
第2ギヤ41間のバックラッシュが取り除かれると共に
、歯車21及び固定歯車20間のバックラッシュが取り
除かれる。
This eliminates backlash between the first gear 40 and second gear 41 of one power transmission system 24, and also eliminates backlash between gear 21 and fixed gear 20.

次いで、他方の動力伝達系25に設けられたバックラッ
シュ除去機構26のボルト47を緩めておき。
Next, the bolt 47 of the backlash removal mechanism 26 provided in the other power transmission system 25 is loosened.

そのフランジ46を第2図に示す矢印H方向に手動で回
転すると、フランジ46を軸支している第2シヤフ1〜
39と歯車40.41と歯車21とが一体的に回ること
により、その歯車21の歯面を第6図に示すようにベー
ス11の固定歯車20の歯面に対し反対側の位置で突き
当てさせ、この突き当てた状態でポル1−47を締付け
てフランジ46と従動側プーリ34を固定する。
When the flange 46 is manually rotated in the direction of the arrow H shown in FIG.
39, gear 40, 41, and gear 21 rotate together, so that the tooth surface of gear 21 abuts against the tooth surface of fixed gear 20 of base 11 at the opposite position, as shown in FIG. Then, in this abutted state, the pole 1-47 is tightened to fix the flange 46 and the driven pulley 34.

これにより、バンクラッシュ除去機構26の調節によっ
て歯車22を固定歯車20に対し一方の動力伝達系24
の歯車21と反対側で突き当たるので、双方の動力伝達
系24.25の第1ギヤ40及び第2ギヤ41間のバッ
クラッシュと共に、歯車21.22及び固定歯車20間
のバックラッシュを取り除くことができる。
As a result, by adjusting the bank lash removal mechanism 26, the gear 22 can be moved from one power transmission system 24 to the fixed gear 20.
Since the gears 21 and 21 collide on the opposite side, it is possible to eliminate the backlash between the first gear 40 and the second gear 41 of both power transmission systems 24 and 25 as well as the backlash between the gears 21 and 22 and the fixed gear 20. can.

その結果、双方の動力伝達系24.25のガタがなく、
かつ動力伝達系24.25及び固定歯車20間のガタも
なくなるので、旅回装置自体の精度をいっそう高めるこ
とができ、それだけ産業用ロボットの高精度化を達成し
得る。
As a result, there is no play in both power transmission systems 24 and 25,
Furthermore, since play between the power transmission system 24, 25 and the fixed gear 20 is eliminated, the precision of the traveling device itself can be further improved, and the precision of the industrial robot can be improved accordingly.

この旅回装置は、旋回駆動用モータ23が駆動されると
、その動力が主動側プーリ31.32、巻掛伝動部材3
5.従動側プーリ33.34.中間歯車36を有する2
系統の動力伝達系により減速されて固定歯車20と噛合
する2個の歯車21.22に伝達され、2個の歯車21
.22が自転し乍ら固定歯車20の周りを相対的に公転
することにより、旅回枠12がベース11に対し回転す
る。
In this traveling device, when the swing drive motor 23 is driven, the power is transferred to the main drive side pulley 31, 32 and the winding transmission member 3.
5. Driven pulley 33.34. 2 with intermediate gear 36
The speed is reduced by the power transmission system of the system and transmitted to two gears 21 and 22 that mesh with the fixed gear 20.
.. 22 rotates on its axis and revolves around the fixed gear 20 relatively, so that the travel frame 12 rotates with respect to the base 11.

上記旅回装置において、動力伝達系24.25の中で、
主動側プーリ31.32及び従動側プーリ33.34間
に巻掛伝動部材35を巻き掛けて、動力入力がわが高速
・低トルクの伝達内容となっているが、従動側プーリ3
3.34と歯車21.22間に歯車35を設けて動力出
力がわが低速・高トルクの伝達内容となっているので、
全体として高い剛性を得ることができる。しかも2系統
の動力伝達系24.25が互いに同一部品で構成してい
るので、部品の製作及び組付けを簡素化でき、それだけ
コストの低減が可能になる。
In the above traveling device, in the power transmission system 24.25,
A winding transmission member 35 is wound between the driving pulley 31, 32 and the driven pulley 33, 34, and the power input is our high speed/low torque transmission content, but the driven pulley 3
Since gear 35 is installed between 3.34 and gear 21 and 22, the power output is our low speed/high torque transmission content,
High rigidity can be obtained as a whole. Furthermore, since the two power transmission systems 24 and 25 are constructed from the same parts, the manufacturing and assembly of parts can be simplified, and costs can be reduced accordingly.

さらに、旅回1東動用モータ23をメインテナンスする
際、旋回駆動用モータ23を旅回枠12の外壁に1投置
しているから、そのままの状態で旋回駆動用モータ23
の取付け・取外しを行え、従来のようにベース1の内部
にモータ6を設置したものと比較すると、ロボット全体
を倒すことや、それに要する時間及びスペースの配慮等
が不要になり、メインテナンスを極めて容易に行い得る
Furthermore, when maintaining the motor 23 for the travel gear 1, since the swing drive motor 23 is placed on the outer wall of the travel frame 12, the swing drive motor 23 can be operated as it is.
Compared to conventional models in which the motor 6 is installed inside the base 1, there is no need to tilt the entire robot or consider the time and space required to do so, making maintenance extremely easy. can be done.

なお2図示実施例ではバックラッシュ除去機構26を一
方の動力伝達系25の従動側プーリ34に設けた例を示
したが、本発明においては必ずしもそれに限定されるも
のではなく、要は2系統の動力伝達系24.25のうち
、主動側プーリと従動側プーリと歯車との何れか一個所
に設ければ所期の機能を有することができる。
Although the two illustrated embodiments show an example in which the backlash removal mechanism 26 is provided on the driven pulley 34 of one of the power transmission systems 25, the present invention is not necessarily limited to this, and in short, the backlash removal mechanism 26 is provided in the driven pulley 34 of one of the power transmission systems 25. In the power transmission system 24, 25, if it is provided at any one of the driving pulley, the driven pulley, and the gear, the desired function can be achieved.

〔発明の効果〕〔Effect of the invention〕

以上述べたように、本発明は、2系統の動力伝達系によ
り旅回枠の外壁に設置された旋回駆動用モータの動力を
減速して、ベースの固定歯車と噛合する歯車に伝達させ
、2系統の動力伝達系の少なくとも一個所にバックラッ
シュ除去手段を設けて構成したので、動力伝達経路のガ
タを確実に取り除くことができ、また旋回駆動用モータ
のメインテナンスを簡単に行え、しかも剛性を高め得る
利点がある。
As described above, the present invention reduces the power of the swing drive motor installed on the outer wall of the travel frame using two power transmission systems, and transmits the power to the gear meshing with the fixed gear of the base. Since a backlash removal means is provided in at least one part of the power transmission system of the system, it is possible to reliably remove looseness in the power transmission path, and the maintenance of the swing drive motor can be easily performed, and the rigidity has been increased. There are benefits to be gained.

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

第1図は本発明の第1の実施例を示す断面図、第2図は
2系統の動力伝達系を示す第1図のA−A線に相当する
矢視図、第3図は第2図のB−B線に相当する断面図、
第4図は第2図のC−C線に相当する断面図、第5図は
第4図のD矢視に相当する平面図、第6図は2系統の動
力伝達系の歯車とベースの固定歯車とのバックラッシュ
除去状態を示す説明図、第7図は従来の産業用ロボッ1
−の旋回装置を示す断面図である。 11・・ベース、 12・・・旅回枠、20・・・固定
歯車、21゜22・・・歯車、23・・・旋回駆動用モ
ータ、 24.25・・・2系統の動力伝達機構、26
・・・バックラッシュ除去機構。 31、32・・・主動側プーリ、 33.34・・・従
動側プーリ。 35・・巻掛伝動部材、36・・・中間歯車。
FIG. 1 is a cross-sectional view showing a first embodiment of the present invention, FIG. 2 is a view taken along the line A-A in FIG. 1 showing a two-system power transmission system, and FIG. A sectional view corresponding to line B-B in the figure,
Figure 4 is a sectional view corresponding to line C-C in Figure 2, Figure 5 is a plan view corresponding to arrow D in Figure 4, and Figure 6 shows the gears and base of the two power transmission systems. An explanatory diagram showing the backlash removal state with the fixed gear, Fig. 7 is a conventional industrial robot 1.
- is a sectional view showing a turning device. 11...Base, 12...Traveling frame, 20...Fixed gear, 21°22...Gear, 23...Swivel drive motor, 24.25...Two-system power transmission mechanism, 26
...Backlash removal mechanism. 31, 32...Driver side pulley, 33.34...Driver side pulley. 35... Wrap transmission member, 36... Intermediate gear.

Claims (1)

【特許請求の範囲】 ベースに回転自在に旋回枠を支持する産業用ロボットの
旋回装置において、 (i)前記ベースに固定された固定歯車と、(ii)該
固定歯車の周りに互いに間隔をおいて配置され、かつ固
定歯車と噛合し、前記旋回枠に軸支された2個の歯車と
、 (iii)前記旋回枠の外壁に取付けられた旋回駆動用
モータと、 (iv)該旋回駆動用モータの出力軸に取付けられた2
個の主動側プーリと、前記各歯車の近傍に配置されかつ
前記旋回枠に軸支された2個の従動側プーリと、主動側
プーリ及び従動側プーリ間に掛け渡された巻掛伝動部材
と、各従動側プーリ及びこれと対応する前記各歯車間に
設けられた中間歯車とを有して構成され、かつ前記旋回
駆動用モータの動力を減速して前記固定歯車と噛合する
歯車に伝達する2系統の動力伝達系と、 (v)この2系統の動力伝達系の少なくとも1個所に設
けられたバックラッシュ除去手段と、を備えていること
を特徴とする産業用ロボットの旋回装置。
[Scope of Claims] A swing device for an industrial robot that rotatably supports a swing frame on a base, comprising: (i) a fixed gear fixed to the base; and (ii) spaced apart from each other around the fixed gear. (iii) a swing drive motor attached to an outer wall of the swing frame; (iv) a swing drive motor mounted on an outer wall of the swing frame; 2 attached to the output shaft of the motor
a driving pulley, two driven pulleys disposed near each of the gears and pivotally supported by the rotating frame, and a wrapped transmission member stretched between the driving pulley and the driven pulley. , comprising each driven pulley and a corresponding intermediate gear provided between the respective gears, and decelerates the power of the rotation drive motor and transmits it to the gear meshing with the fixed gear. A turning device for an industrial robot, comprising: two power transmission systems; and (v) backlash removal means provided at at least one location of the two power transmission systems.
JP61010992A 1986-01-23 1986-01-23 Industrial robot swivel Expired - Lifetime JPH0743028B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61010992A JPH0743028B2 (en) 1986-01-23 1986-01-23 Industrial robot swivel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61010992A JPH0743028B2 (en) 1986-01-23 1986-01-23 Industrial robot swivel

Publications (2)

Publication Number Publication Date
JPS62171565A true JPS62171565A (en) 1987-07-28
JPH0743028B2 JPH0743028B2 (en) 1995-05-15

Family

ID=11765642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61010992A Expired - Lifetime JPH0743028B2 (en) 1986-01-23 1986-01-23 Industrial robot swivel

Country Status (1)

Country Link
JP (1) JPH0743028B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323064A (en) * 1986-07-15 1988-01-30 Fanuc Ltd Backlash removing device for speed reduction drive mechanism
JP2018051755A (en) * 2016-09-06 2018-04-05 デッケル マホ プフロンテン ゲーエムベーハーDECKEL MAHO Pfronten GmbH Machine tool for machining workpiece and spindle carrier assembly for use on such a machine tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049790A (en) * 1983-08-31 1985-03-19 Shimadzu Corp Device for chemical emission spectrochemical analysis

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049790A (en) * 1983-08-31 1985-03-19 Shimadzu Corp Device for chemical emission spectrochemical analysis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323064A (en) * 1986-07-15 1988-01-30 Fanuc Ltd Backlash removing device for speed reduction drive mechanism
JPH0416664B2 (en) * 1986-07-15 1992-03-24 Fanuc Ltd
JP2018051755A (en) * 2016-09-06 2018-04-05 デッケル マホ プフロンテン ゲーエムベーハーDECKEL MAHO Pfronten GmbH Machine tool for machining workpiece and spindle carrier assembly for use on such a machine tool
US10518337B2 (en) 2016-09-06 2019-12-31 Deckel Maho Pfronten Gmbh Machine tool for machining a workpiece and spindle carrier assembly for use on such a machine tool

Also Published As

Publication number Publication date
JPH0743028B2 (en) 1995-05-15

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