JP2018034293A - Multi-shaft screw fastening device - Google Patents

Multi-shaft screw fastening device Download PDF

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JP2018034293A
JP2018034293A JP2016172304A JP2016172304A JP2018034293A JP 2018034293 A JP2018034293 A JP 2018034293A JP 2016172304 A JP2016172304 A JP 2016172304A JP 2016172304 A JP2016172304 A JP 2016172304A JP 2018034293 A JP2018034293 A JP 2018034293A
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plate
bit
chuck
screw tightening
fastening
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康治 背戸
Koji Sedo
康治 背戸
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Nitto Seiko Co Ltd
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Nitto Seiko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a multi-shaft screw fastening device of which the number of components is small of which a cost can be reduced.SOLUTION: A multi-shaft screw fastening device comprising: a first late 15 on which plural screw fastening tools 10 comprising a bit B, which is rotatable via a universal joint 5 connected to a motor M, are loaded, and can be freely elevated in a direction of approaching or being separated from a work-piece W; and a second plate 20 in which each bit B is inserted and which guides the bit. The fastening device is so configured as to lower the first plate 15 and the second plate 20 integrally to a prescribed height, and thereafter, to lower only the first plate 15 thereby screwing a fastening component S into the work-piece W. The second plate 20 comprises a rotary plate 21 which is rotatable around a pivot A parallel to an axis of the bit B, and a stationery plate 22 which rotatably supports the rotary plate 21. The stationery plate 22 comprises a driving source 26 which reciprocally revolve the rotary plate 21 by a preset angle. Consequently, since plural bits B are revolved by a prescribed angle altogether, a position of the bit B can be changed.SELECTED DRAWING: Figure 2

Description

本発明は、複数配置されたビットを所定角度旋回して所定のねじ締めポイントへねじを締結する多軸ねじ締め装置に関する。   The present invention relates to a multi-axis screw fastening device that turns a plurality of arranged bits by a predetermined angle to fasten a screw to a predetermined screw fastening point.

従来の多軸ねじ締め装置は、特許文献１および特許文献２に示すように、エア圧送などにより供給されるねじを一時的に吊り下げて保持するチャックおよび前記チャック内に挿通したビットを回転可能なねじ締めツールを備え、これらチャックおよびねじ締めツールを複数配置した昇降プレートを昇降自在に構成される。また、この従来の多軸ねじ締め装置は、ワークの上面へチャックおよびねじ締めツールを一体に下降させ、ワーク上面から少し隙間を空けた位置で前記チャックを停止させ、このチャックに対して前記ビットを相対移動するよう下降可能に構成される。これにより、回転下降するビットは、前記チャックに保持した前記ねじをチャック内から下方へ押し出してワークへ螺入することができる。よって、従来の多軸ねじ締め装置は、複数の締付けポイントを有するワークを短時間で締結できるという特徴がある。   As shown in Patent Documents 1 and 2, the conventional multi-axis screw tightening device can rotate a chuck that temporarily suspends and holds a screw supplied by air pressure feeding or the like and a bit inserted into the chuck. And an elevating plate on which a plurality of these chucks and screw tightening tools are arranged is configured to be movable up and down. Further, this conventional multi-axis screw tightening device lowers the chuck and the screw tightening tool integrally on the upper surface of the work, stops the chuck at a position having a slight gap from the upper surface of the work, and the bit with respect to the chuck. Are configured to be able to move downward relative to each other. Thus, the rotating and lowering bit can push the screw held by the chuck downward from the inside of the chuck and screw it into the workpiece. Therefore, the conventional multi-axis screw fastening device has a feature that a workpiece having a plurality of fastening points can be fastened in a short time.

一方、従来の多軸ねじ締め装置は、特許文献３に示すように、異なる締付けピッチに対応できるピッチ切替え手段を備えて成る。このピッチ切替え手段は、前記ねじ締めツールを回動可能なアームの一端に取り付けるとともに、前記アームの他端に作動シリンダを連結して成り、ピッチ切替えの必要なねじ締めツールの軸数に合わせて複数設置されている。これにより、従来の多軸ねじ締め装置は、ピッチ直径の異なる締付けポイントを有するワークのねじ締めに対応可能となり、ワークの機種切り替え時のねじ締めツールの位置変更などに掛かる段替え作業時間の短縮が可能になるという特徴がある。   On the other hand, as shown in Patent Document 3, the conventional multi-axis screw fastening device includes pitch switching means that can cope with different fastening pitches. This pitch switching means is formed by attaching the screw tightening tool to one end of a rotatable arm and connecting an operating cylinder to the other end of the arm, and according to the number of axes of the screw tightening tool requiring pitch switching. Several are installed. As a result, the conventional multi-axis screw tightening device can handle screw tightening of workpieces with tightening points with different pitch diameters, reducing the time required for changing the position of the screw tightening tool when changing the workpiece model. There is a feature that becomes possible.

実開昭62-092126号公報Japanese Utility Model Publication No. 62-092126 実開昭62-130832号公報Japanese Utility Model Publication No. 62-130832 特開2002-036043号公報Japanese Patent Laid-Open No. 2002-036043

しかしながら、従来の多軸ねじ締め装置は、前記ピッチ切替え手段をピッチ切替えが必要となるねじ締めツールの軸数に合わせて設置しなければならず、製作に掛かるコストが増大するという問題があった。   However, the conventional multi-axis screw tightening apparatus has to be installed in accordance with the number of axes of the screw tightening tool for which pitch switching is required, and there is a problem that the cost for manufacturing increases. .

本発明は、所定の回転数および締付けトルクを発揮するモータと、このモータに接続された自在継手を介して回転可能なビットとから成るねじ締めツールを複数備え、前記ねじ締めツールをそれぞれ載置しワークへ向かって接近あるいは離反する方向へ昇降自在な第１プレートと、前記ビットをそれぞれ挿通してガイドする第２プレートとを備え、前記第１プレートおよび前記第２プレートを所定の高さまで一体に下降し、その後第１プレートのみ下降させて締結部品をワークへ螺入する多軸ねじ締め装置において、前記第２プレートは、前記ビットの軸線と平行な旋回軸を中心にして回転自在な回転板と、この回転板を回転自在に支持する固定板とを備え、前記固定板は、前記回転板を予め設定した角度だけ往復旋回させる駆動源を備え、複数の前記ビットを一斉に所定角度旋回するように構成したことを特徴とする。なお、前記回転板は、前記締結部品を適宜供給可能な部品供給装置に接続可能なチャックを複数備え、前記チャックは、前記ビットを挿通自在にガイドするビット挿通路および前記締結部品を通過可能な締結部品導入路をそれぞれ交差するように形成したチャック本体と、このチャック本体の先端に揺動自在に取り付けられた一対の爪とを備え、前記爪は、常時は閉じた状態で前記締結部品を吊下保持するように構成される一方、前記ビットの下降により締結部品を介して開くように構成され、前記締結部品を通過可能かつ前記部品供給装置と前記チャックの締結部品導入路とを接続可能な受渡部材を備え、前記受渡部材は、旋回前には前記チャックにそれぞれ接するよう固定配置され、前記チャックの旋回中あるいは旋回完了時には前記チャックから切り離されるように構成することが好ましい。また、前記駆動源は、エアシリンダであり、往復移動可能な可動部を備え、前記可動部は、これに連結した係合部材を備え、前記係合部材は、回動自在なカムフォロアであることことが好ましい。   The present invention comprises a plurality of screw tightening tools comprising a motor that exhibits a predetermined rotational speed and a tightening torque, and a bit that is rotatable via a universal joint connected to the motor, and each of the screw tightening tools is placed thereon. A first plate that is movable up and down in a direction toward or away from the workpiece, and a second plate that guides each bit through the first plate, and the first plate and the second plate are integrated to a predetermined height. In the multi-axis screw fastening device in which only the first plate is lowered and then the fastening part is screwed into the workpiece, the second plate rotates freely about a turning axis parallel to the axis of the bit A fixed plate that rotatably supports the rotating plate, the fixed plate includes a drive source that reciprocally turns the rotating plate by a preset angle; Characterized by being configured to simultaneously predetermined angle turning the bit number. The rotating plate includes a plurality of chucks that can be connected to a component supply device that can appropriately supply the fastening parts, and the chucks can pass through the bit insertion passage that guides the bits through and the fastening parts. A chuck body formed so as to cross the fastening part introduction paths, and a pair of claws attached to the tip of the chuck body so as to be swingable. Constructed to be suspended and held, it is configured to open through a fastening part when the bit is lowered, and can pass through the fastening part and connect the part supply device and the fastening part introduction path of the chuck. The delivery member is fixedly disposed so as to be in contact with the chuck before turning. It is preferably configured to be disconnected from the click. The drive source is an air cylinder, and includes a movable part that can reciprocate. The movable part includes an engagement member coupled to the movable part, and the engagement member is a rotatable cam follower. It is preferable.

本発明の多軸ねじ締め装置は、複数のビットをガイドしている回転板を１つの駆動源によって所定角度旋回できるため、従来のようにビットの配置数に対応した数の駆動源を配置する必要が無い。よって、本発明の多軸ねじ締め装置は、従来に比べてビットの位置変更を行うための駆動源の配置数を削減できるので、コスト低減が可能になるという利点がある。   Since the multi-axis screw fastening device of the present invention can turn a rotating plate guiding a plurality of bits by a predetermined angle by one drive source, the number of drive sources corresponding to the number of bits arranged as in the prior art is arranged. There is no need. Therefore, the multi-axis screw tightening device of the present invention has an advantage that the number of drive sources for changing the position of the bit can be reduced as compared with the prior art, and the cost can be reduced.

また、本発明の多軸ねじ締め装置は、前記回転板に複数のチャックを取り付けているため、外部から供給される前記締結部品を一時的に保持することが可能となる。したがって、本発明の多軸ねじ締め装置は、ワークに仮止めされた複数のボルトを増し締め作業できるだけに留まらず、タッピンねじなどの締結部品を都度チャックに供給してワークへ螺入する供給締付けにも対応できるという利点もある。さらに、本発明の多軸ねじ締め装置は、所定角度旋回する前記チャックと同数の前記受渡部材を固定配置しており、チャックの旋回動作完了位置に配置していない。これにより、前記回転板および前記チャックが旋回しても前記受渡部材は旋回しないので、前記受渡部材が例えば樹脂製のホースであれば、前述の旋回によって引っ張られたりあるいは弛むことが起こり難い。よって、本発明の多軸ねじ締め装置は、前記チャックまでの受渡部材の形状変化が起こりにくいので、前記部品供給装置から供給される締結部品を受渡部材内で詰まらせるなどの問題が生じ難いという利点もある。   Moreover, since the multi-axis screw fastening apparatus of this invention has attached the some chuck | zipper to the said rotating plate, it becomes possible to hold | maintain the said fastening components supplied from the outside temporarily. Therefore, the multi-axis screw tightening device of the present invention is not limited to retightening a plurality of bolts temporarily fixed to the workpiece, and supply clamping that supplies a fastening component such as a tapping screw to the chuck each time and screws it into the workpiece. There is also an advantage that it can respond to Furthermore, in the multi-axis screw tightening device according to the present invention, the same number of the delivery members as the chucks that rotate by a predetermined angle are fixedly arranged, and are not arranged at the completion position of the chuck turning operation. Accordingly, even if the rotating plate and the chuck are swung, the delivery member does not turn. Therefore, if the delivery member is, for example, a resin hose, it is unlikely to be pulled or loosened by the turning. Therefore, in the multi-axis screw tightening device of the present invention, since the shape change of the delivery member up to the chuck hardly occurs, problems such as clogging of the fastening component supplied from the component supply device in the delivery member hardly occur. There are also advantages.

さらに、本発明の多軸ねじ締め装置は、前記駆動源をエアシリンダとし、さらにこのエアシリンダの可動部に回動自在なカムフォロアを備えた係合部材として成るため、角度制御を要する高価なＡＣサーボモータを用いた装置に比べて安価に構成できるという利点もある。   Furthermore, the multi-axis screw tightening device according to the present invention is an expensive AC that requires angle control because the drive source is an air cylinder and the movable member of the air cylinder is provided with a rotatable cam follower. There is also an advantage that it can be configured at a lower cost than a device using a servo motor.

本発明に係る多軸ねじ締め装置の概略図である。It is the schematic of the multi-axis screw fastening apparatus which concerns on this invention. 図１の要部を示す一部切欠き斜視図である。It is a partially cutaway perspective view which shows the principal part of FIG.

以下、本発明の一実施形態を示す多軸ねじ締め装置について、図１および図２に基づき説明する。本発明の多軸ねじ締め装置１は、モータＭの回転駆動に伴って一体に回転するビットＢを備えたねじ締めツール１０と、このねじ締めツール１０を複数搭載して前記ビットＢをワークＷに向かって接近あるいは離反する方向へ移動可能な昇降手段と、前記ワークＷへ螺入するねじＳを適宜供給可能なねじ供給装置Ｆとを備えて成る。   Hereinafter, a multi-axis screw fastening device showing an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The multi-axis screw tightening device 1 of the present invention includes a screw tightening tool 10 provided with a bit B that rotates integrally with the rotation of a motor M, and a plurality of the screw tightening tools 10 mounted thereon, and the bit B is attached to a workpiece W. Elevating means that can move toward or away from the workpiece W, and a screw supply device F that can appropriately supply a screw S to be screwed into the workpiece W.

前記ねじ締めツール１０は、所定の回転数およびトルクを発揮するモータＭと、このモータＭの出力軸に連結された自在継手５を介して回転するビットＢとを備えて成り、前記ビットＢは、ワークＷへ螺入するねじＳに嵌合可能な嵌合部を備えて成る。   The screw tightening tool 10 includes a motor M that exhibits a predetermined rotational speed and torque, and a bit B that rotates via a universal joint 5 that is connected to an output shaft of the motor M. And a fitting portion that can be fitted to a screw S to be screwed into the workpiece W.

また、前記多軸ねじ締め装置１は、前記ワークＷをクランプ可能な治具Ｇを固定したベース３と、このベース３に立設されたコラム４とを備えて成り、前記コラム４は、その延びる方向へ伸縮可能な昇降用エアシリンダ１６が配置されている。   The multi-axis screw fastening device 1 includes a base 3 to which a jig G capable of clamping the workpiece W is fixed, and a column 4 erected on the base 3. An elevating air cylinder 16 that can extend and contract in the extending direction is disposed.

前記昇降用エアシリンダ１６は、その先端に第１プレート１５を接続して成り、この第１プレート１５に前記モータＭが複数固定配置されている。よって、前記昇降用エアシリンダ１６が上述した昇降手段に相当する。   The ascending / descending air cylinder 16 is configured by connecting a first plate 15 to the tip thereof, and a plurality of the motors M are fixedly disposed on the first plate 15. Therefore, the lifting air cylinder 16 corresponds to the lifting means described above.

前記第１プレート１５は、前記昇降用エアシリンダ１６の伸縮動作に併せて前記ねじ締めツール１０を昇降自在に支持して成り、前記コラム４と平行に配置されたスライドシャフト６に挿通されて摺動自在に構成される。また、第１プレート１５は、前記スライドシャフト６と平行に配置されたねじ軸７を図１に示す上部ナット７ａにより抜け止めし吊下げて成り、この第１プレート１５の下方には、所定の距離を空けて配置された第２プレート２０が位置する。   The first plate 15 is configured to support the screw tightening tool 10 so as to move up and down in accordance with the expansion and contraction operation of the lifting and lowering air cylinder 16. It is configured to move freely. In addition, the first plate 15 is configured such that a screw shaft 7 arranged in parallel with the slide shaft 6 is suspended and suspended by an upper nut 7a shown in FIG. The 2nd plate 20 arrange | positioned at intervals is located.

前記第２プレート２０は、前記第１プレート１５と同様に前記スライドシャフト６および前記ねじ軸７が挿通されており、前記ねじ軸７に螺合した下部ナット７ｂによって常時は前記第１プレート１５と所定の距離を空けて位置するように構成される。また、前記第２プレート２０は、前記ねじ締めツール１０のビットＢをそれぞれ挿通する回転板２１と、この回転板２１を旋回軸Ａを中心に旋回自在に支持するとともに前記スライドシャフト６およびねじ軸７を挿通した固定板２２を備えて成る。   The second plate 20 is inserted with the slide shaft 6 and the screw shaft 7 in the same manner as the first plate 15, and is always connected to the first plate 15 by a lower nut 7 b screwed into the screw shaft 7. It is configured to be positioned at a predetermined distance. The second plate 20 has a rotating plate 21 through which the bit B of the screw tightening tool 10 is inserted, and supports the rotating plate 21 so that the rotating plate 21 can turn around a turning axis A, and the slide shaft 6 and the screw shaft. 7 is provided with a fixing plate 22 inserted therethrough.

前記回転板２１は、これに挿通したビットＢの数に併せて配置した複数の挿通穴を備えて成り、この挿通穴にはそれぞれ前記ビットＢを挿通しガイドするチャック３０を吊下して成る。また、この回転板２１の上面には、図２に示すようなストッパレバー２８が固定されており、このストッパレバー２８は、後記固定板２２側へ一部張り出すように配置されている。   The rotating plate 21 is provided with a plurality of insertion holes arranged in accordance with the number of bits B inserted therethrough, and chucks 30 for inserting and guiding the bits B are suspended in the insertion holes. . Further, a stopper lever 28 as shown in FIG. 2 is fixed on the upper surface of the rotating plate 21, and this stopper lever 28 is disposed so as to partially protrude toward the fixing plate 22 described later.

前記固定板２２は、図２に示すようにその上面に直動可能な駆動源の一例であるピッチ切替用エアシリンダ２６と、前記ストッパレバー２８に当接するストッパ２９ａ，２９ｂとを備えて成る。   As shown in FIG. 2, the fixed plate 22 includes a pitch switching air cylinder 26 which is an example of a drive source that can move directly on the upper surface thereof, and stoppers 29 a and 29 b that are in contact with the stopper lever 28.

前記ピッチ切替用エアシリンダ２６は、固定板２２の上面に沿って平行に摺動する可動部２６ａを備えて成る。この可動部２６ａには、その摺動方向に対して直交する方向に突出し前記回転板２１に係合する係合部材２７が固定されている。前記係合部材２７は、前記回転板２１を図２の矢印Ｃ方向へ旋回させるために配されており、前記ピッチ切替用エアシリンダ２６の作動により回転板２１を所定角度旋回可能にしている。また、係合部材２７は、前記回転板２１と当接する箇所をカムフォロアとしている。   The pitch switching air cylinder 26 includes a movable portion 26 a that slides in parallel along the upper surface of the fixed plate 22. An engaging member 27 that protrudes in a direction orthogonal to the sliding direction and engages with the rotating plate 21 is fixed to the movable portion 26a. The engaging member 27 is arranged to turn the rotating plate 21 in the direction of arrow C in FIG. 2, and the rotating plate 21 can be turned by a predetermined angle by the operation of the air cylinder 26 for pitch switching. Further, the engaging member 27 has a cam follower at a position where it comes into contact with the rotating plate 21.

前記ストッパ２９ａ，２９ｂは、前記回転板２１の旋回を所定の角度に規制するものであり、前記固定板２２の上面にそれぞれ固定されている。本実施形態において、ストッパ２９ａとストッパ２９ｂとは、回転板２１が９０度旋回できる間隔に配置されている。   The stoppers 29a and 29b restrict the turning of the rotary plate 21 to a predetermined angle, and are fixed to the upper surface of the fixed plate 22, respectively. In the present embodiment, the stopper 29a and the stopper 29b are arranged at an interval at which the rotating plate 21 can turn 90 degrees.

前記チャック３０は、前記挿通穴に挿通され回転板２１に固定されたガイド部材３３と、このガイド部材３３の先端に取り付けられたチャック本体３１と、チャック本体３１の先端に揺動自在に配され前記ねじＳを保持可能な一対の爪３２とから構成される。   The chuck 30 is inserted into the insertion hole and fixed to the rotating plate 21, a chuck main body 31 attached to the tip of the guide member 33, and a swingable arrangement at the tip of the chuck main body 31. It is comprised from a pair of nail | claw 32 which can hold | maintain the said screw S.

前記ガイド部材３３は、これに挿通した前記ビットＢを挿通可能に構成されており、ビットＢの回転の妨げとならないようなパイプ状の部材である。   The guide member 33 is configured to be able to insert the bit B inserted therethrough and is a pipe-shaped member that does not hinder the rotation of the bit B.

前記チャック本体３１は、前記ビットＢの嵌合部を常時は内包しているビット挿通路３１ｂと、このビット挿通路３１ｂに対して傾斜し前記ねじ供給機Ｆから供給されるねじＳを閉じた状態の前記爪３２へ受け渡す締結部品導入路３１ａとを備えて成る。また、前記ビット挿通路３１ｂが常時前記ガイド部材３３の穴に連通するよう前記ガイド部材３３に固定されている。   The chuck body 31 closed the bit insertion passage 31b that normally contains the fitting portion of the bit B and the screw S that is inclined with respect to the bit insertion passage 31b and supplied from the screw feeder F. And a fastening part introduction path 31a to be transferred to the claw 32 in the state. The bit insertion passage 31b is fixed to the guide member 33 so as to always communicate with the hole of the guide member 33.

前記爪３２は、その上部に前記ねじＳの頭部を通過可能な幅広溝と、この幅広溝から徐々に狭く形成された幅狭溝とを備え、前記チャック本体３１に先端に揺動自在に取り付けられている。この爪３２は、図示しないばねによって常時は互いに閉じる方向に付勢されて成り、前記ねじＳの頭部を前記幅広溝により内包し、頭部よりも小径のねじ部を前記幅狭溝にガイドされ一部下方から突出させて保持可能に構成されている。   The claw 32 is provided with a wide groove through which the head of the screw S can pass and a narrow groove formed gradually narrower from the wide groove, and can swing freely at the tip of the chuck body 31. It is attached. The claw 32 is normally urged in a closing direction by a spring (not shown). The head of the screw S is enclosed by the wide groove, and a screw portion having a smaller diameter than the head is guided by the narrow groove. It is configured to be able to hold a part protruding from below.

前記ねじ供給機Ｆは、これに接続されたホースＨを介してねじＳを前方へ供給可能に構成されており、ねじＳの先端を前方へ向けて１本づつエア圧送可能に構成されている。また、前記ホースＨは、パイプ状に形成された受渡部材４０に接続されている。   The screw feeder F is configured to be able to supply the screw S forward via a hose H connected thereto, and is configured to be capable of air pressure feeding one by one with the tip of the screw S directed forward. . The hose H is connected to a delivery member 40 formed in a pipe shape.

前記受渡部材４０は、前記ねじＳの頭部径より大きく前記締結部品導入路３１ａとほぼ同程度の内径を備えており、前記ベース３から立設した取付支柱４１に固定されている。また、受渡部材４０は、常時は前記締結部品導入路３１ａに連通するよう配置されており、上述した旋回自在なチャック３０に対して常時固定された状態となっている。   The delivery member 40 has an inner diameter that is larger than the head diameter of the screw S and substantially the same as that of the fastening part introduction path 31 a, and is fixed to a mounting column 41 that stands from the base 3. Moreover, the delivery member 40 is always arranged so as to communicate with the fastening part introduction path 31a, and is always fixed to the pivotable chuck 30 described above.

このように構成された多軸ねじ締め装置１の作用について以下に説明する。また、ここで説明する多軸ねじ締め装置１は、２つのねじ締めツール１０を搭載した構成であり、前記ワークＷは、４ポイントのねじ締め箇所を有するものとする。   The operation of the multi-axis screw fastening device 1 configured as described above will be described below. In addition, the multi-axis screw tightening device 1 described here has a configuration in which two screw tightening tools 10 are mounted, and the workpiece W has four points of screw tightening locations.

図１に示すように、それぞれのチャック３０に前記ねじＳを保持した状態となれば、図示しない制御装置の動作指令を受けて前記モータＭがそれぞれ回転するとともに前記昇降用エアシリンダ１６が作動する。   As shown in FIG. 1, when the screws S are held in the chucks 30, the motors M are rotated in response to an operation command from a control device (not shown) and the elevating air cylinder 16 is operated. .

これにより、前記第１プレート１５および第２プレート２０がともに下降し始め、前記第１プレート１５および前記チャック３０が図１の二点鎖線に示す位置まで下降する。これ以降も前記昇降用エアシリンダ１６は、前記第１プレート１５を下降させるため、二点鎖線の位置で停止しているチャック３０内のビットＢは、回転しながら前記爪３２の幅広溝へ侵入して前記ねじＳに嵌合する。   As a result, both the first plate 15 and the second plate 20 begin to descend, and the first plate 15 and the chuck 30 descend to the position indicated by the two-dot chain line in FIG. Thereafter, the lift air cylinder 16 lowers the first plate 15, so that the bit B in the chuck 30 stopped at the position of the two-dot chain line enters the wide groove of the claw 32 while rotating. Then, the screw S is fitted.

これにより、前記ねじＳは、前記ビットＢによって下方へ押され爪３２を押し広げてチャック３０から抜け出る。また、ねじＳは、この時、ビットＢに嵌合しているので、所定のトルクを発揮して回転し、前記ワークＷに設けられた４ポイント内の２ポイントのねじ締め箇所にそれぞれ螺入される。   As a result, the screw S is pushed downward by the bit B, spreads the claw 32 and comes out of the chuck 30. Further, since the screw S is engaged with the bit B at this time, the screw S rotates with a predetermined torque, and is screwed into two points of the four points provided on the workpiece W. Is done.

前記モータＭは、予め設定されたトルクに到達すれば、前記制御装置へトルクアップ信号を送り、１回目のねじ締め作業が完了する。この後、制御装置は、前記昇降用シリンダ１６を複動させる指令を送り、前記第１プレート１５を元の高さまで復帰させる。これにより、前記第２プレートおよび前記チャック３０もそれぞれ図１に示す元の状態となる。   When the motor M reaches a preset torque, the motor M sends a torque up signal to the control device, and the first screw tightening operation is completed. Thereafter, the control device sends a command to double-activate the elevating cylinder 16 to return the first plate 15 to the original height. Thereby, the second plate and the chuck 30 are also in the original state shown in FIG.

この後、制御装置は、前記ねじ供給機Ｆへねじ送り信号を送り、ねじＳをそれぞれのチャック３０へ供給する。   Thereafter, the control device sends a screw feed signal to the screw feeder F and supplies the screws S to the respective chucks 30.

次に、制御装置は、前記ピッチ切替用エアシリンダ２６を作動させるため、前記可動部２６ａおよび前記係合部材２７が図２に示す二点鎖線の位置までスライドする。   Next, in order to operate the pitch switching air cylinder 26, the control device slides the movable portion 26a and the engaging member 27 to the position of the two-dot chain line shown in FIG.

このスライドに伴い、前記係合部材２７に係合している回転板２１が矢印Ｃ方向へ旋回し始め、前記ストッパレバー２８が前記ストッパ２９ａから離れて前記ストッパ２９ｂに接触する。よって、回転板２１は、図２に示すように約９０度旋回するので、ビットＢも同様に９０度旋回する。これにより、ビットＢは、それぞれ前記ワークＷの残る２ポイントのねじ締め箇所の上空に位置する。   Along with this sliding, the rotating plate 21 engaged with the engaging member 27 starts to turn in the direction of arrow C, and the stopper lever 28 moves away from the stopper 29a and contacts the stopper 29b. Therefore, as shown in FIG. 2, the rotating plate 21 turns about 90 degrees, so the bit B also turns 90 degrees. As a result, the bits B are positioned above the remaining two points of the screw tightening portion of the workpiece W, respectively.

これにより、制御装置は、前記前記モータＭおよび昇降用エアシリンダ１６をそれぞれ作動させ、２回目のねじ締め作業を開始する。この２回目のねじ締め作業は、１回目と同様であるため、この説明は割愛する。   As a result, the control device operates the motor M and the lifting air cylinder 16, respectively, and starts a second screw tightening operation. Since this second screw tightening operation is the same as the first, this description is omitted.

２回目のねじ締め作業が完了した状態であると、ワークＷに締結されたねじＳにそれぞれビットＢが嵌合した状態である。このため、制御装置は、前記昇降用エアシリンダ１６を複動させる指令を送り、前記第１プレート１５を元の高さまで復帰させる。   When the second screw tightening operation is completed, the bits B are respectively fitted to the screws S fastened to the workpiece W. For this reason, the control device sends a command to double-activate the elevating air cylinder 16 to return the first plate 15 to its original height.

この時、前記回転板２１が９０度旋回した位置になっているので、前記チャック３０と前記受渡部材４０とが連通していない状態となっている。このため、制御装置は、前記ピッチ切替用エアシリンダ２６を複動させ、回転板２１を先ほどとは逆の−９０度旋回させる。これにより、チャック３０と受渡部材４０とがそれぞれ連通した状態となり、前記ねじ供給機Ｆから爪３２へそれぞれねじＳが供給される。   At this time, since the rotary plate 21 is in a position rotated 90 degrees, the chuck 30 and the delivery member 40 are not in communication with each other. For this reason, the control device double-acts the pitch switching air cylinder 26 and turns the rotating plate 21 by −90 degrees, which is the reverse of the previous one. Accordingly, the chuck 30 and the delivery member 40 are in communication with each other, and the screws S are supplied from the screw feeder F to the claws 32, respectively.

このように、本発明の多軸ねじ締め装置１は、複数のビットＢの位置を１つのピッチ切替用エアシリンダ２６によって切り替えることができるので、従来のようなビットＢの数に合わせた数の駆動源を配置する必要が無い。   As described above, the multi-axis screw tightening device 1 of the present invention can switch the positions of the plurality of bits B by one pitch switching air cylinder 26, so that the number of bits B matches the number of bits B as in the prior art. There is no need to arrange a drive source.

なお、本実施形態において、多軸ねじ締め装置１は、所謂２軸型として説明したが、これに限定されるものではなく、ワークＷのねじ締めポイント数等に合わせて軸数を増やしてもよいことはいうまでもない。また、前記回転板２１の旋回角度は、約９０度としているがこれに限定されるものではなく、例えば、前記ストッパ２９ａ，２９ｂの設置間隔を上述したように調整することで自由に旋回角度に設定できることはいうまでもない。さらに、前記ストッパ２９ｂを例えばシリンダなどにより可動可能に構成することで、２箇所のピッチ切替えから複数位置のピッチ切替え可能にしてもよい。   In the present embodiment, the multi-axis screw fastening device 1 has been described as a so-called biaxial type. However, the present invention is not limited to this, and the number of axes may be increased in accordance with the number of screw fastening points of the workpiece W. Needless to say, it is good. The turning angle of the rotating plate 21 is about 90 degrees, but is not limited to this. For example, the turning angle can be freely adjusted by adjusting the installation interval of the stoppers 29a and 29b as described above. Needless to say, it can be set. Further, the stopper 29b may be configured to be movable by, for example, a cylinder or the like, so that the pitch can be switched at a plurality of positions from two pitches.

１ 多軸ねじ締め装置
１０ ねじ締めツール
２０ 第２プレート
２１ 回転板
２６ ピッチ切替用エアシリンダ
２７ 係合部材
３０ チャック
３１ａ 締結部品導入路
４０ 受渡部材
Ｂ ビット
Ｓ ねじ DESCRIPTION OF SYMBOLS 1 Multi-axis screw fastening apparatus 10 Screw fastening tool 20 2nd plate 21 Rotating plate 26 Pitch switching air cylinder 27 Engagement member 30 Chuck 31a Fastening component introduction path 40 Delivery member B Bit S Screw

Claims (3)

所定の回転数および締付けトルクを発揮するモータと、このモータに接続された自在継手を介して回転可能なビットとから成るねじ締めツールを複数備え、前記ねじ締めツールをそれぞれ載置しワークへ向かって接近あるいは離反する方向へ昇降自在な第１プレートと、前記ビットをそれぞれ挿通してガイドする第２プレートとを備え、前記第１プレートおよび前記第２プレートを所定の高さまで一体に下降し、その後第１プレートのみ下降させて締結部品をワークへ螺入する多軸ねじ締め装置において、
前記第２プレートは、前記ビットの軸線と平行な旋回軸を中心にして回転自在な回転板と、この回転板を回転自在に支持する固定板とを備え、
前記固定板は、前記回転板を予め設定した角度だけ往復旋回させる駆動源を備え、
複数の前記ビットを一斉に所定角度旋回するように構成したことを特徴とする多軸ねじ締め装置。 A plurality of screw tightening tools each including a motor that exhibits a predetermined rotational speed and a tightening torque and a bit that can be rotated via a universal joint connected to the motor are provided. A first plate that can be moved up and down in a direction approaching or moving away from each other, and a second plate that guides each bit through the bit, and integrally lowers the first plate and the second plate to a predetermined height, In the multi-axis screw tightening device for lowering only the first plate and screwing the fastening part into the workpiece,
The second plate includes a rotating plate that is rotatable about a turning axis parallel to the axis of the bit, and a fixed plate that rotatably supports the rotating plate,
The fixed plate includes a drive source for reciprocatingly turning the rotary plate by a preset angle,
A multi-axis screw tightening device characterized in that a plurality of the bits are simultaneously turned at a predetermined angle. 前記回転板は、前記締結部品を適宜供給可能な部品供給装置に接続可能なチャックを複数備え、
前記チャックは、前記ビットを挿通自在にガイドするビット挿通路および前記締結部品を通過可能な締結部品導入路をそれぞれ交差するように形成したチャック本体と、このチャック本体の先端に揺動自在に取り付けられた一対の爪とを備え、
前記爪は、常時は閉じた状態で前記締結部品を吊下保持するように構成される一方、前記ビットの下降により締結部品を介して開くように構成され、
前記締結部品を通過可能かつ前記部品供給装置と前記チャックの締結部品導入路とを接続可能な受渡部材を備え、
前記受渡部材は、旋回前には前記チャックにそれぞれ接するよう固定配置され、前記チャックの旋回中あるいは旋回完了時には前記チャックから切り離されるように構成したことを特徴とする請求項１に記載の多軸ねじ締め装置。 The rotating plate includes a plurality of chucks that can be connected to a component supply device that can appropriately supply the fastening component,
The chuck is attached to a chuck body formed so as to intersect a bit insertion passage for guiding the bit so that the bit can be inserted, and a fastening part introduction path through which the fastening part can pass, and swingably attached to a tip of the chuck body. A pair of nails,
The claw is configured to suspend and hold the fastening part in a normally closed state, while being configured to open through the fastening part by lowering the bit,
A delivery member capable of passing through the fastening component and capable of connecting the component supply device and the fastening component introduction path of the chuck;
2. The multi-axis according to claim 1, wherein the delivery member is fixedly disposed so as to be in contact with the chuck before turning, and is separated from the chuck when the chuck is turning or when the turning is completed. Screw tightening device. 前記駆動源は、エアシリンダであり、往復移動可能な可動部を備え、
前記可動部は、これに連結した係合部材を備え、
前記係合部材は、回動自在なカムフォロアであることを特徴とする請求項１または請求項２に記載の多軸ねじ締め装置。 The drive source is an air cylinder and includes a movable part that can reciprocate;
The movable part includes an engaging member connected to the movable part,
The multi-axis screw tightening device according to claim 1 or 2, wherein the engaging member is a rotatable cam follower.
JP2016172304A 2016-09-02 2016-09-02 Multi-shaft screw fastening device Pending JP2018034293A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112496730A (en) * 2020-12-01 2021-03-16 钱水祥 Automatic assembling device for courtyard lamp shell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112496730A (en) * 2020-12-01 2021-03-16 钱水祥 Automatic assembling device for courtyard lamp shell
CN112496730B (en) * 2020-12-01 2021-10-26 钱水祥 Automatic assembling device for courtyard lamp shell

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