JP2860879B2 - Gun pressure drive - Google Patents
Gun pressure driveInfo
- Publication number
- JP2860879B2 JP2860879B2 JP6179583A JP17958394A JP2860879B2 JP 2860879 B2 JP2860879 B2 JP 2860879B2 JP 6179583 A JP6179583 A JP 6179583A JP 17958394 A JP17958394 A JP 17958394A JP 2860879 B2 JP2860879 B2 JP 2860879B2
- Authority
- JP
- Japan
- Prior art keywords
- gun
- electric motor
- speed reducer
- arm
- bracket
- 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
Links
- 239000003638 chemical reducing agent Substances 0.000 claims description 28
- 238000003466 welding Methods 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 5
- 206010028980 Neoplasm Diseases 0.000 claims description 3
- 201000011510 cancer Diseases 0.000 claims description 3
- 239000004519 grease Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Resistance Welding (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は，スポット溶接ガンに関
し，詳しくはガンアームの主軸部に減速機を組み込み，
この減速機を加圧アクチュエータにより回動して電極間
に溶接に必要な加圧力と電流を与えて被溶接物を圧接す
る回動ロボットガンの電極加圧駆動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot welding gun, and more particularly, to a reduction gear mounted on a main shaft of a gun arm.
The present invention relates to an electrode pressure driving device of a rotary robot gun which rotates this speed reducer by a pressure actuator to apply a pressing force and a current necessary for welding between electrodes to press a workpiece to be welded.
【０００２】[0002]
【従来の技術】従来，この種のＸ型のロボットガンの電
極加圧駆動方式には，たとえば特開平３−２０７５８０
号に開示された装置が提案されている。この装置は二つ
のガンアームがそれぞれの端部に加圧電極を有し，この
加圧電極を相互に動かす電動モータに接続され，この電
動モータによって前記加圧電極が被溶接物を加圧するこ
とを可能とし，その後，被溶接物を開放するための始動
を行うと，前記加圧電極を被溶接物から完全に離隔する
クラッチが前記モータの回転力の一部を使用して，双方
の方向に解放走行させるものである。2. Description of the Related Art Conventionally, an electrode press driving system of this type of X type robot gun is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-207580.
Has been proposed. In this device, two gun arms have a pressurized electrode at each end, and are connected to an electric motor that moves the pressurized electrode mutually, and the pressurized electrode presses the workpiece by the electric motor. After that, when starting to open the workpiece, the clutch that completely separates the pressure electrode from the workpiece is used in both directions by using a part of the torque of the motor. The vehicle is to be released.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら，叙述し
た溶接ガンは，次のような性能上の問題点があげられ
る。However, the welding gun described above has the following performance problems.
【０００４】電動モータの回転を一旦ボールネジで中
継して直線運動に直し，さらに回転運動に戻してガンア
ームに伝えているため，加圧駆動の効率が必ずしも理想
的とは言えない。[0004] Since the rotation of the electric motor is once relayed by a ball screw to convert it into a linear motion and then returned to the rotary motion and transmitted to the gun arm, the efficiency of the pressurizing drive is not always ideal.
【０００５】ボールネジのスパッタ避けカバーに完全
なものがなく，スパッタの侵入やグリスの漏洩対策が必
要となる。またボールネジ自体，高速回転するのでグリ
スが飛散してしまいその設計寿命をクリアすることが難
しい。[0005] There is no complete cover for avoiding spatter of the ball screw, and it is necessary to take measures against penetration of spatter and leakage of grease. In addition, since the ball screw itself rotates at high speed, grease is scattered and it is difficult to clear the design life.
【０００６】電動モータの本体が後方に飛び出すの
で，ロボット本体に干渉しないようにガンブラケットの
ロボット取付け面を後方に下げざるを得ず，その結果，
重心位置がロボット手首の回転中心から遠くなり，ロボ
ットの許容曲げトルク以下に納まらなくなる。Since the main body of the electric motor projects rearward, the robot mounting surface of the gun bracket must be lowered rearward so as not to interfere with the robot main body.
The position of the center of gravity is far from the center of rotation of the robot wrist, and will not fit within the allowable bending torque of the robot.
【０００７】[0007]
【課題を解決するための手段】本発明は，上記の問題を
解決するために次のような技術的手段を講じてある。The present invention employs the following technical means to solve the above problems.
【０００８】すなわち，先端に相対向する電極を有する
二つのガンアームにより前記電極間に溶接に必要な加圧
力を与える場合に，ガンアームを開閉する主軸部として
組み込まれた減速機をガンブラケットに支持し，前記減
速機を介して電動モータの前記加圧力のためのトルクを
電極間に伝達するようにしたガン加圧駆動装置におい
て，前記二つのガンアームのうち，一つは前記減速機の
出力軸側又は前記減速機の本体ケース側に，またもう一
つは前記減速機の本体ケース側又は前記減速機の出力軸
側若しくは前記ガンブラケット側に取りつけたことを特
徴とするガン加圧駆動装置を提供する。That is, when a pressing force necessary for welding is applied between two electrodes by two gun arms having opposing electrodes at the tips, a speed reducer incorporated as a main shaft for opening and closing the gun arm is mounted on the gun. Supported by a bracket,
In cancer pressure driving apparatus adapted to transmit the torque for the pressure force of the electric motor between the electrodes through the speed machine, out of the two gun arms, one output shaft side or the said reduction gear the body case side of the reduction gear, also other provides cancer pressure driving apparatus is characterized in that attached to the output shaft side or the gun bracket side of the main body case side or the reducer of the reducer.
【０００９】もう一つの特徴は前記電動モータはガンブ
ラケットまたはいずれか一方のガンアーム側に固定さ
れ，前記減速機の入力軸から前記電動モータのトルクが
減速機に伝達されるようにしたものである。Another feature is that the electric motor is fixed to a gun bracket or one of the gun arms, and the torque of the electric motor is transmitted from the input shaft of the speed reducer to the speed reducer. .
【００１０】さらにもう一つは前記減速機の本体はその
出力軸を含むアーム取付け軸と共にユニット構造として
ガンブラケットの主軸部位から取り出せるようにしたも
のである。The other is that the main body of the speed reducer can be taken out from the main shaft portion of the gun bracket as a unit structure together with an arm mounting shaft including its output shaft.
【００１１】また，ガンの重心位置が主軸部位にくるよ
うにスプリング・バランスウエイトで調整可能としたガ
ン全体の揺動機構を備えたものである。Further, the present invention is provided with a swing mechanism for the entire gun which can be adjusted by a spring balance weight so that the center of gravity of the gun is located at the main shaft portion.
【００１２】そしてまた，前記揺動機構は電極チップの
摩耗量分を含まない，ガン全体の許容揺動角度範囲をも
つものである。Further, the swing mechanism has an allowable swing angle range of the whole gun, which does not include a wear amount of the electrode tip.
【００１３】[0013]
【作用】そして，本発明の装置によると，回動型ロボッ
トガンの主軸部としての減速機とガンアームを取付ける
減速機の出力軸を加圧駆動ユニットとしてそのままガン
ブラケットの主軸部位から取り出すことができるから，
組立作業，保全作業の時間短縮が実現する。また，本発
明のロボット回動駆動機構が持っている耐久性，小型，
大開放ストロークが得られ，ガン全体の重心位置が主軸
部位にくるように設計しやすいので，加圧時，ワークを
変形させにくいなどのほか，電動モータの取付け位置が
ガンブラケットにこだわらず，ロボット本体後方に他の
６軸と同類として配置するか，主軸部の減速機の入力軸
に電動モータを直結し，コンパクトにすることもでき
る。また従来のガン加圧駆動機構に比べて，ボールネジ
へのスパッタ対策やグリス漏洩対策等が不要となる。ま
た本発明による減速機回転式ガンが従来一般のＣ型ガ
ン，Ｘ型ガンの両方の電動モータガンにとって変わるこ
とも可能になる。According to the device of the present invention, the output shaft of the speed reducer for mounting the gun arm and the speed reducer as the main shaft portion of the rotary robot gun can be taken out of the main shaft portion of the gun bracket as it is as the pressure drive unit. From
The time required for assembly work and maintenance work can be reduced. In addition, the durability, small size, and
A large open stroke can be obtained, and it is easy to design so that the center of gravity of the entire gun is located at the main shaft. This makes it difficult to deform the work when pressurized. It can be placed in the rear of the main unit in the same manner as the other six shafts, or can be made compact by directly connecting the electric motor to the input shaft of the speed reducer on the main shaft. Further, as compared with the conventional gun pressure driving mechanism, measures against spatter on the ball screw and measures against grease leakage are not required. In addition, the reduction gear rotary gun according to the present invention can be replaced with both conventional C-type and X-type electric motor guns.
【００１４】[0014]
【実施例】図１は，本発明装置の実施例を示す外観全体
の平面図である。図２はその外観全体の側面図である。
図３は図２のＡ−Ａの矢視図で，本発明装置の断面構造
例を示す。図４は本発明の他の構造例を示す断面図であ
る。FIG. 1 is a plan view of the entire appearance showing an embodiment of the apparatus of the present invention. FIG. 2 is a side view of the entire appearance.
FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 and shows an example of a cross-sectional structure of the device of the present invention. FIG. 4 is a sectional view showing another structural example of the present invention.
【００１５】図の１は回動型ロボットガンである。ロボ
ット側に取付けられるガンブラケット２に下アーム３
（固定側アーム）が絶縁された状態で固定されている。
また固定アームに対応する上アーム４（可動側アーム）
はガンブラケット２の主軸部５を中心に開閉動作するよ
うに取付けられている。なお，図３の実施例は片方の上
アームのみを主軸部を中心に回転させ，下アームは固定
した場合である。FIG. 1 shows a rotary robot gun. Lower arm 3 on gun bracket 2 attached to robot side
(Fixed side arm) is fixed in an insulated state.
Upper arm 4 corresponding to fixed arm (movable arm)
Is mounted so as to open and close about the main shaft portion 5 of the gun bracket 2. In the embodiment shown in FIG. 3, only one of the upper arms is rotated about the main shaft, and the lower arm is fixed.
【００１６】この場合，可動アーム４は減速機６の出力
軸７の外周に嵌入されボルトＢ1で両者が固着されてい
る。減速機６の出力軸７は，外側がカバー２６で覆われ
た本体ケース８の出力軸取付け面ａにボルトＢ2で取付
けられている。[0016] In this case, the movable arm 4 is both fixed by a bolt B 1 is fitted on the outer periphery of the output shaft 7 of the speed reducer 6. An output shaft 7 of the reduction gear 6 is attached to the output shaft mounting surface a of the main body case 8 outside is covered with a cover 26 with bolts B 2.
【００１７】減速機６の本体ケース８はガンブラケット
２に支持されており，減速機６の出力軸７に内設された
軸受け９に入力軸１０が挿入され，出力軸７を貫通した
入力軸の先端には歯車１１が取付けられていて，歯車側
の出力軸の外周はガンブラケット２に軸受け１２を介し
て回動可能に取付けられている。また，ここで使用され
る減速機のタイプの特徴として出力軸をガンブラケット
に取付け，本体ケースにガンアームを取付けることも容
易に可能である。A main body case 8 of the speed reducer 6 is supported by the gun bracket 2, and an input shaft 10 is inserted into a bearing 9 provided inside an output shaft 7 of the speed reducer 6, and the input shaft penetrates the output shaft 7. A gear 11 is attached to a tip of the gear, and an outer periphery of an output shaft on a gear side is rotatably attached to a gun bracket 2 via a bearing 12. Also, as a feature of the type of reduction gear used here, it is possible to easily attach the output shaft to the gun bracket and attach the gun arm to the main body case.
【００１８】一方，上アーム４を駆動する加圧アクチュ
エータとして，本発明では電動モータ１３が使用され
る。On the other hand, in the present invention, an electric motor 13 is used as a pressure actuator for driving the upper arm 4.
【００１９】図１〜図３の実施例では電動モータ１３は
ガンブラケット２に取付けられ，各ガンアームの先端に
取付けた電極１４，電極１５により挟持される被溶接物
Ｗに対し溶接に必要な加圧力を与えるものである。In the embodiment shown in FIGS. 1 to 3, the electric motor 13 is mounted on the gun bracket 2, and the welding object W held between the electrodes 14 and 15 mounted on the tip of each gun arm is required for welding. It gives pressure.
【００２０】電動モータ１３は，モータ出力軸に設けた
加圧駆動用歯車１６からのタイミングベルト１７が主軸
部の減速機の入力軸に設けた歯車１１に連結される。In the electric motor 13, a timing belt 17 from a pressure driving gear 16 provided on a motor output shaft is connected to a gear 11 provided on an input shaft of a speed reducer on a main shaft portion.
【００２１】各電極への通電用二次回路を構成するシャ
ント１８とシャント１９は図１及び図２に示すようにア
ームの運動方向に自由度をもって可動する可撓性のＵ字
形銅板から構成されたもので，ガンブラケット２に取付
けられた溶接トランス２０の二次端子２１及び二次端子
２２にそれぞれ取付けられた二次側ブスバー２３から各
ガンアーム側へそれぞれ接続されている。As shown in FIGS. 1 and 2, the shunts 18 and 19 constituting a secondary circuit for energizing each electrode are formed of a flexible U-shaped copper plate movable with a degree of freedom in the movement direction of the arm. The secondary busbars 23 respectively attached to the secondary terminals 21 and 22 of the welding transformer 20 attached to the gun bracket 2 are connected to the respective gun arms.
【００２２】次に図４は，他の実施例である。上記実施
例では片アームの回転駆動方式の一例を示したが，図４
の場合は下アーム３と上アーム４の，いわゆる両アーム
回転駆動方式の一例を示したものである。FIG. 4 shows another embodiment. In the above embodiment, an example of the one-arm rotary drive system is shown.
In the case of (1), an example of a so-called double-arm rotation drive system of the lower arm 3 and the upper arm 4 is shown.
【００２３】すなわち，減速機６とガンブラケット２と
の間に下アーム取付け軸２４を設け，ガンブラケット２
と減速機６及び下アーム取付け軸２４との間は各軸受け
１２，２７，２８を設けて上下アーム３，４が主軸部を
中心に回動するようにしたものである。That is, a lower arm mounting shaft 24 is provided between the speed reducer 6 and the gun bracket 2, and the gun bracket 2
The bearings 12, 27, 28 are provided between the motor and the speed reducer 6 and the lower arm mounting shaft 24 so that the upper and lower arms 3, 4 rotate about the main shaft.
【００２４】この場合，電動モータ１３は上アーム４
か，または下アーム取付け軸２４の延長部２５に取付け
られているが，ロボット本体を含むガンブラケット２側
に取りつけても良い。In this case, the electric motor 13 is
Alternatively, it is attached to the extension 25 of the lower arm attachment shaft 24, but may be attached to the gun bracket 2 side including the robot body.
【００２５】この場合，歯車１１を減速機６の入力軸１
０から外し上アーム４と下アーム３を置いて減速機６の
本体ケース側と入出力軸をユニットとして図の右方向に
取り出すことができる。In this case, the gear 11 is connected to the input shaft 1 of the speed reducer 6.
Then, the upper arm 4 and the lower arm 3 can be removed, and the main body case side of the speed reducer 6 and the input / output shaft can be taken out to the right in the drawing as a unit.
【００２６】次に，かかる構成による本発明装置の動作
を図３の構造例に基づいて説明すると，まず，本発明装
置のガンは溶接作業に必要な動作及び速度が予めロボッ
トにティーチングされ，そのティーチングされたプログ
ラムに従って再現操作されるものである。Next, the operation of the apparatus of the present invention having such a configuration will be described with reference to the structural example of FIG. 3. First, the operation and speed required for the welding operation of the gun of the apparatus of the present invention are previously taught to the robot, The reproduction operation is performed according to the taught program.
【００２７】イコライズの動作及びガン開放時とガン姿
勢変化時の動作タイミングも予めプログラムに記憶され
る。The equalizing operation and the operation timings when the gun is opened and when the gun posture is changed are stored in the program in advance.
【００２８】今，ガンが加圧駆動する場合は，ガン加圧
信号により電動モータ１３を作動すると，この電動モー
タからの回転力が加圧駆動用歯車１６からタイミングベ
ルト１７を介して主軸部に組み込まれた減速機６の入力
軸１０等を経て本体ケース８内の出力軸７を回転すると
同時に，その出力軸７に固定された上アーム４を回転す
る。When the gun is driven to be pressurized, when the electric motor 13 is operated by the gun pressurization signal, the rotational force from the electric motor is transmitted from the pressurizing drive gear 16 to the main shaft via the timing belt 17. The output shaft 7 in the main body case 8 is rotated via the input shaft 10 of the built-in speed reducer 6 and the like, and at the same time, the upper arm 4 fixed to the output shaft 7 is rotated.
【００２９】この場合，一般には上アーム４が主軸部を
中心に回転するが，被溶接物Ｗから加圧ストロークの短
い方の下アーム側の電極１４が先行してガン全体のイコ
ライズ量をロボット側のプログラム制御によって被溶接
物Ｗの下側を押し上げながら上から電極１５が同時加圧
する。すなわちこの時，下アーム３の電極１４をワーク
側Ｗに押上る方向にイコライズ力を附勢する。In this case, in general, the upper arm 4 rotates about the main shaft portion, but the electrode 14 on the lower arm side having the shorter pressurizing stroke from the workpiece W first moves the equalizing amount of the entire gun to the robot. The electrode 15 is simultaneously pressurized from above while pushing up the lower side of the workpiece W by the program control of the side. That is, at this time, an equalizing force is applied in a direction to push up the electrode 14 of the lower arm 3 to the work side W.
【００３０】この下アームをガンブラケット側に固定
し，上アームのみが回転するガンはガン姿勢に応じたガ
ン全体の重量のバランスを考える必要はない。The lower arm is fixed to the gun bracket side, and it is not necessary to consider the balance of the weight of the entire gun in accordance with the posture of the gun in which only the upper arm rotates.
【００３１】この回動型ロボットガンの利点として，主
軸部を中心に前後，上下の重量バランスを取りやすい，
つまりガン全体の重心位置を主軸センタ部に持ってくる
ことが容易であるのでＣ型ロボットガンのように可動部
の重量バランス装置の必要はあまりない。The advantage of this rotary type robot gun is that it is easy to balance the weight in the front, back, up and down around the main shaft,
That is, since it is easy to bring the position of the center of gravity of the entire gun to the center of the spindle, there is not much need for a weight balance device for the movable part unlike the C-type robot gun.
【００３２】ロボットがガンを移動する時，つまり電動
モータ１３を逆回転することにより，その動力を加圧駆
動用歯車１６及びタイミングベルト１７を経て入力軸１
０等を経て出力軸７に伝達し，上下二つのガンアーム３
及びガンアーム４を開いて電極１４及び電極１５を解放
する。When the robot moves the gun, that is, by rotating the electric motor 13 in the reverse direction, the power is transmitted to the input shaft 1 via the pressure driving gear 16 and the timing belt 17.
0, etc., to the output shaft 7 and the upper and lower two gun arms 3
Then, the gun arm 4 is opened to release the electrodes 14 and 15.
【００３３】もちろんこの時，上アーム４が主軸を中心
に開いたときガン全体が動かないようにガン全体揺動機
構をあらかじめスプリング力で押さえておくか，溶接加
圧動作に支障の出ない程度の許容揺動角度範囲をガン全
体に与えておく，この場合，電極チップの摩耗分はロボ
ット側の制御装置で補正することになる。Of course, at this time, the entire gun swing mechanism is previously held down by a spring force so that the entire gun does not move when the upper arm 4 is opened about the main shaft, or the welding pressurizing operation is not hindered. The allowable swing angle range is given to the entire gun. In this case, the wear amount of the electrode tip is corrected by the controller on the robot side.
【００３４】ガンが打点位置に送られると，ガン加圧指
令信号により電動モータ１３が作動すると同時に，電動
モータ１３の回転力はタイミングベルト１７を経て減速
機６に伝達され上アーム４を回転し，電極加圧動作を開
始する。もちろんこの時，ロボット本体側のイコライズ
の動作も行われ，上下アームが同時加圧される。When the gun is sent to the hitting position, the electric motor 13 is operated by the gun pressurizing command signal, and at the same time, the torque of the electric motor 13 is transmitted to the speed reducer 6 via the timing belt 17 to rotate the upper arm 4. Then, the electrode pressing operation is started. Of course, at this time, the equalizing operation on the robot body side is also performed, and the upper and lower arms are simultaneously pressed.
【００３５】[0035]
【発明の効果】以上で説明したように，本発明装置によ
れば，回動型ロボットガンの主軸部として減速機とアー
ム取付け軸を加圧駆動機構のユニットとしてそのままガ
ン支持ブラケットから取り出すことができるから，組立
作業，保全作業の時間短縮が実現する。As described above, according to the apparatus of the present invention, the reduction gear and the arm mounting shaft as the main shaft of the rotary robot gun can be taken out of the gun support bracket as a unit of the pressure drive mechanism. As a result, assembly and maintenance work can be shortened.
【００３６】また，本発明のロボット回動機構が持って
いる耐久性，小型，大開放ストローク等が得られるほ
か，電動モータの取付け位置がガンブラケットにこだわ
らず，ロボット本体後方に他の６軸と同類として配置す
るか，主軸部の減速機の入力軸に電動モータを直結する
こともできるので，従来のガン加圧駆動機構に比べて，
本発明による主軸回転式ガンが従来一般のＣ型ガン，Ｘ
型ガンの両方の電動モータガンにとって変わることも可
能になる。In addition to the durability, small size, large open stroke, and the like of the robot rotation mechanism of the present invention, the mounting position of the electric motor is not restricted to the gun bracket, and the other six axes are provided behind the robot body. Or an electric motor can be directly connected to the input shaft of the speed reducer on the main shaft.
The spindle rotating type gun according to the present invention is a conventional general C type gun, X
It can also be changed for both electric motor guns of the type gun.
【図１】本発明の装置をＸ型ロボット溶接ガンに応用し
た場合のガン全体の平面図である。FIG. 1 is a plan view of an entire gun when the apparatus of the present invention is applied to an X-type robot welding gun.
【図２】本発明装置の側面図である。FIG. 2 is a side view of the device of the present invention.
【図３】本発明装置の片アーム回動式の主軸部の実施例
を示す断面図である。FIG. 3 is a cross-sectional view showing an embodiment of a one-arm rotating type main shaft portion of the device of the present invention.
【図４】本発明装置の両アーム回動式の主軸部の実施例
を示す断面図である。FIG. 4 is a cross-sectional view showing an embodiment of a double-arm rotating type main shaft portion of the device of the present invention.
１ ロボットガン ２ ガンブラケット ３ 下アーム ４ 上アーム ５ 主軸部 ６ 減速機 ７ 出力軸 ８ 本体ケース ９ 軸受け １０ 入力軸 １１ 歯車 １２ 軸受け １３ 電動モータ １４ 電極 １５ 電極 １６ 加圧駆動用歯車 １７ タイミングベルト １８ シャント １９ シャント ２０ 溶接トランス ２１ 二次端子 ２２ 二次端子 ２３ 二次側ブスバー ２４ 下アーム取付け軸 ２５ 延長部 ２６ カバーDESCRIPTION OF SYMBOLS 1 Robot gun 2 Gun bracket 3 Lower arm 4 Upper arm 5 Main shaft part 6 Reduction gear 7 Output shaft 8 Body case 9 Bearing 10 Input shaft 11 Gear 12 Bearing 13 Electric motor 14 Electrode 15 Electrode 16 Pressure drive gear 17 Timing belt 18 Shi catcher cement 19 shunt 20 welding transformer 21 secondary terminal 22 the secondary terminal 23 the secondary side bus bar 24 the lower arm mounting shaft 25 extension 26 covers
Claims (5)
ンアームにより前記電極間に溶接に必要な加圧力を与え
る場合に，ガンアームを開閉する主軸部として組み込ま
れた減速機をガンブラケットに支持し，前記減速機を介
して電動モータの前記加圧力のためのトルクを電極間に
伝達するようにしたガン加圧駆動装置において，前記二
つのガンアームのうち，一つは前記減速機の出力軸側又
は前記減速機の本体ケース側に，またもう一つは前記減
速機の本体ケース側又は前記減速機の出力軸側若しくは
前記ガンブラケット側に取りつけたことを特徴とするガ
ン加圧駆動装置。When a pressing force required for welding is applied between two electrodes by two gun arms having electrodes facing each other at a tip thereof, a reducer incorporated as a main shaft for opening and closing the gun arm is supported by a gun bracket. , Through the reducer
And transmitting the torque for the pressurizing force of the electric motor between the electrodes, wherein one of the two gun arms has one of the output shaft side of the speed reducer or the speed reducer of the speed reducer. the body case side, the other is the output shaft side of the main body case side or the reducer of the reduced <br/> the speed or
Cancer pressure driving apparatus is characterized in that attached to the gun bracket side.
いずれか一方のガンアーム側に固定され，前記減速機の
入力軸から前記電動モータのトルクが減速機に伝達され
る請求項１のガン加圧駆動装置。2. The gun pressurizing drive according to claim 1, wherein said electric motor is fixed to a gun bracket side or one of said gun arms , and torque of said electric motor is transmitted to said reduction gear from an input shaft of said reduction gear. apparatus.
ーム取付け軸と共にユニット構造としてガンブラケット
の主軸部位から取り出せるようにした請求項１または２
のガン加圧駆動装置。3. The main body of the speed reducer together with an arm mounting shaft including an output shaft thereof can be taken out from a main shaft portion of the gun bracket as a unit structure.
Gun pressure drive.
スプリング・バランスウエイトで調整可能としたガン全
体の揺動機構を有する請求項１〜３のいずれかに記載の
ガン加圧駆動装置。4. A gun mechanism according to claim 1 , further comprising a swing mechanism for the entire gun which can be adjusted by a spring balance weight so that the center of gravity of the gun is located at the main shaft portion. Pressure drive.
含まない，ガン全体の許容揺動角度範囲をもつ請求項１
〜４のいずれかに記載のガン加圧駆動装置。5. The swing mechanism has an allowable swing angle range of the entire gun, which does not include the amount of wear of the electrode tip.
5. The gun pressure driving device according to any one of items 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6179583A JP2860879B2 (en) | 1994-07-07 | 1994-07-07 | Gun pressure drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6179583A JP2860879B2 (en) | 1994-07-07 | 1994-07-07 | Gun pressure drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0825057A JPH0825057A (en) | 1996-01-30 |
| JP2860879B2 true JP2860879B2 (en) | 1999-02-24 |
Family
ID=16068268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6179583A Expired - Lifetime JP2860879B2 (en) | 1994-07-07 | 1994-07-07 | Gun pressure drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2860879B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2860890B2 (en) * | 1995-08-25 | 1999-02-24 | 株式会社電元社製作所 | Pressurized drive for electric pressurized gun |
| DE69708805T2 (en) * | 1996-09-13 | 2002-04-11 | Dengensha Mfg. Co. Ltd., Kawasaki | Motorized resistance spot welding machine |
| JP5437841B2 (en) * | 2010-02-05 | 2014-03-12 | 本田技研工業株式会社 | Welding gun |
-
1994
- 1994-07-07 JP JP6179583A patent/JP2860879B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0825057A (en) | 1996-01-30 |
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