JP2007038770A - Component positioning method and device - Google Patents

Component positioning method and device Download PDF

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JP2007038770A
JP2007038770A JP2005223612A JP2005223612A JP2007038770A JP 2007038770 A JP2007038770 A JP 2007038770A JP 2005223612 A JP2005223612 A JP 2005223612A JP 2005223612 A JP2005223612 A JP 2005223612A JP 2007038770 A JP2007038770 A JP 2007038770A
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component
self
propelled machine
target
positioning
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JP4601511B2 (en
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Takeshi Katamine
剛 片峰
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a component positioning method with excellent workability easily and surely positioning a component supported by a self-propelling machine to a component assembling target such as an automotive body. <P>SOLUTION: In the component positioning method, when positioning the component P supported by the self-propelling machine 1 to the automotive body W, a target marker 6 is attached to the tip of a wire 2b capable of being freely pulled out of and wound around the self-propelling machine 1, and by detecting the extracted length and existing position of the wire 2b when the target marker 6 is installed on a lower surface of the automotive body W, the component is controlled and assembled by a control means 5 so that an error between a reference extracted length and a reference position becomes zero. When the assembly is completed, the target marker 6 is automatically removed from the automotive body W by a removal and recovery mechanism. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば自動車ボディなどの部品組付け対象物に対して自走機により支持された部品を位置決めする部品位置決め技術に関する。   The present invention relates to a part positioning technique for positioning a part supported by a self-propelled machine with respect to a part assembly target such as an automobile body.

従来、部品組付け対象物に対して部品を位置決めする部品位置決め装置としては、部品組付け対象物(ワーク)の下面に組み付けられる部品を保持する可動テーブルと、ワークに対する可動テーブルの相対位置を検知する相対位置検知手段と、相対位置検知手段からの信号に基づき、可動テーブルを同一平面内で移動させて、その可動テーブルをワークの下面の所定位置に対して所定の相対位置に位置決めするテーブル位置決め手段と、可動テーブルをワークの下方にて昇降させるテーブル昇降手段と、可動テーブルに取り付けられて、その可動テーブルの上昇および位置決め状態下で、その可動テーブルが保持する部品をワークの下面に組付ける部品組付け手段とを備えたものが知られている。(例えば、特許文献1参照。)
特開昭63−93530号公報
Conventionally, as a part positioning device for positioning a part with respect to a part assembly target, a movable table for holding a part to be assembled on the lower surface of the part assembly target (workpiece) and a relative position of the movable table with respect to the workpiece are detected. Relative position detection means and a table positioning for moving the movable table in the same plane based on a signal from the relative position detection means and positioning the movable table at a predetermined relative position with respect to a predetermined position on the lower surface of the workpiece. Means, a table elevating means for elevating the movable table below the work, and a component attached to the movable table so that the parts held by the movable table are assembled to the lower surface of the work when the movable table is raised and positioned. A device having a component assembling means is known. (For example, refer to Patent Document 1.)
JP-A-63-93530

しかし、特許文献1に開示された部品組付け装置では、ワークに対する可動テーブルの相対位置を検知する相対位置検知手段としてテレビカメラを使用するため、作業現場の明るさや外乱光の存在など作業環境によってはテレビカメラが正常に機能しない場合があるという問題があった。   However, in the component assembling apparatus disclosed in Patent Document 1, a television camera is used as a relative position detection unit that detects the relative position of the movable table with respect to the workpiece. Therefore, depending on the work environment such as the brightness of the work site and the presence of disturbance light. Had the problem that the TV camera might not function properly.

本発明は、従来の技術が有するこのような問題点に鑑みてなされたものであり、その目的とするところは、自動車ボディなどの部品組付け対象物に対して、自走機により支持された部品を容易・確実に位置決めすることができるようにするとともに、可能な限り人的作業をなくし、作業性のよい部品位置決め方法及びその装置を提供しようとするものである。   The present invention has been made in view of such problems of the prior art, and the object of the present invention is to be supported by a self-propelled machine with respect to an object to be assembled such as an automobile body. An object of the present invention is to provide a component positioning method and apparatus with good workability so that components can be easily and reliably positioned and human work is eliminated as much as possible.

上記課題を解決するため本発明は、部品組付け対象物に対して自走機に支持された部品を位置決めする部品位置決め方法において、前記部品組付け対象物に、自走機から引き出し・巻き取り自在な線状部材の先端の係合部材を装着し、前記線状部材の長さ及び存在位置を検出して前記部品組付け対象物と部品との相対位置ずれを無くすように前記自走機を移動させるとともに、前記位置ずれが無くなった状態で前記部品を前記部品組付け対象物に組付けるようにし、組付け後、前記自走機を移動させて前記係合部材を部品組付け対象物から自動的に取り外して受取り回収するようにした。   In order to solve the above-described problems, the present invention provides a component positioning method for positioning a component supported by a self-propelled machine with respect to a component assembly target, wherein the component assembly target is pulled out and wound from the self-propelled device. The self-propelled machine is equipped with an engaging member at the tip of a free linear member, detects the length and position of the linear member, and eliminates the relative positional deviation between the component assembly object and the component. And moving the self-propelled machine after the assembly so that the engaging member is moved to the component assembly target object. It was automatically removed from and received and collected.

このように、自走機から引き出し・巻き取り自在な線状部材の先端の係合部材を部品組付け対象物に装着し、線状部材の長さ及び存在位置を検出して部品組付け対象物と部品との相対位置ずれを無くすようにすれば、作業環境に左右されずに部品の位置決めが可能となり、また、部品を組付けた後、自走機を移動させて前記係合部材を部品組付け対象物から自動的に取り外すようにすれば、自動化が図られて人的作業の省力化が図れる。
ここで、本明細書でいう部品組付け対象物と部品との相対位置ずれを無くすための自走機の移動とは、自走機の平面的な走行のみならず、部品を支持する治具の昇降も含むものとする。
In this way, the engagement member at the tip of the linear member that can be pulled out and wound up from the self-propelled machine is mounted on the component assembly target, and the length and location of the linear member are detected to detect the component assembly target. If the relative displacement between the object and the part is eliminated, the part can be positioned without being influenced by the work environment.After the part is assembled, the self-propelled machine is moved to move the engaging member. If it is automatically removed from the part assembly target, automation can be achieved and labor saving of human work can be achieved.
Here, the movement of the self-propelled aircraft for eliminating the relative positional deviation between the component assembly target object and the components referred to in this specification is not only a planar traveling of the self-propelled aircraft, but also a jig that supports the components. This includes lifting and lowering.

また、本発明の部品組付け装置においては、自走機から引き出し・巻き取り自在な線状部材を自走機に設け、この線状部材の先端に、前記部品組付け対象物に着脱自在な係合部材を設け、前記線状部材の長さ及び存在位置を確認して自走機の移動量を制御する制御手段を設けるとともに、前記部品組付け対象物に装着される係合部材を自動的に取り外して回収する取外し・回収機構を自走機に設けた。
そして、このような装置において、前述の方法により部品位置決め等を行う。
Further, in the component assembling apparatus of the present invention, a linear member that can be pulled out and wound up from the self-propelled machine is provided in the self-propelled aircraft, and the tip of the linear member is detachable from the component assembling object. An engaging member is provided, and a control means for controlling the amount of movement of the self-propelled machine by checking the length and position of the linear member is provided, and the engaging member to be mounted on the component assembly target is automatically set. A self-propelled machine was installed on the self-propelled aircraft for removal and collection.
And in such an apparatus, component positioning etc. are performed by the above-mentioned method.

係合部材を部品組付け対象物に装着するだけで、部品を部品組付け対象物の所定の位置に位置決めすることができ、この際、作業環境に左右されず、自動的に位置決めが可能である。また、取外し・回収機構により係合部材を部品取付け対象物から自動的に取り外すことにより、人的労力の削減が図れる。   By simply mounting the engaging member on the part assembly target object, the part can be positioned at a predetermined position on the part assembly target object. At this time, positioning is possible automatically regardless of the work environment. is there. Further, the labor can be reduced by automatically removing the engaging member from the component attachment target by the detaching / collecting mechanism.

本発明の実施の形態について添付した図面に基づき説明する。
ここで、図1は本発明に係る部品位置決め装置の概要図、図2はセンサと制御動作の説明図、図3は制御系のブロック構成図、図4、図5はターゲットマーカの説明図、図6、図7はターゲットマーカの取外し・回収機構の作用を説明する説明図、図8は部品位置決め方法の作業手順のフローチャート図、図9は部品位置決め装置の動作説明図である。
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a schematic diagram of a component positioning device according to the present invention, FIG. 2 is an explanatory diagram of sensors and control operations, FIG. 3 is a block diagram of a control system, FIGS. 4 and 5 are explanatory diagrams of target markers, FIGS. 6 and 7 are explanatory diagrams for explaining the operation of the target marker removal / recovery mechanism, FIG. 8 is a flowchart of the work procedure of the component positioning method, and FIG. 9 is an operation explanatory diagram of the component positioning device.

本発明に係る部品位置決め装置は、部品組付け対象物に対して、自走機により支持された部品を容易・確実に位置決めできるようにされ、可能な限り人的作業をなくして、作業性のよい部品位置決め技術を提供できるようにされるとともに、本実施例では、部品組付け対象物である自動車ボディWの下面にオイルタンク等の部品Pを組付ける技術に適用されている。   The component positioning device according to the present invention can easily and reliably position a component supported by a self-propelled machine with respect to a component assembly target, and eliminates human work as much as possible. In addition to being able to provide a good component positioning technique, the present embodiment is applied to a technique for assembling a component P such as an oil tank on the lower surface of the automobile body W that is a component assembly target.

すなわち、図1に示すように、本発明に係る部品位置決め装置は、オーバーヘッドコンベア10で搬送されてくる部品組付け対象物である自動車ボディWと同期しながら移動可能で且つ部品Pを支持する自走機1と、自動車ボディWに装着可能な係合部材としてのターゲットマーカ6と、このターゲットマーカ6に接続される被センシング部材2と、この被センシング部材2の長さや位置を検知する第1センサ3、及び第2センサ4と、自走機1の移動や部品Pの位置等を制御する制御手段5と、自動車ボディWに装着されるターゲットマーカ6を取り外すための押圧部材7などを備えており、これらターゲットマーカ6や、被センシング部材2や、第1センサ3や、第2センサ4や、制御手段5や、押圧部材7は自走機1の昇降台8に設置されるとともに、前記ターゲットマーカ6には、前記押圧部材7の働きによって自動車ボディWから自動的に切離されて離脱することのできる機構が組み込まれており、このターゲットマーカ6に組み込まれる切離し機構と押圧部材7によって取外し・回収機構が構成されている。   That is, as shown in FIG. 1, the component positioning device according to the present invention is capable of moving in synchronization with the automobile body W that is a component assembly object conveyed by the overhead conveyor 10 and that supports the component P. A traveling machine 1, a target marker 6 as an engaging member that can be attached to the automobile body W, a sensing member 2 connected to the target marker 6, and a first and the first sensing the length and position of the sensing member 2. A sensor 3 and a second sensor 4, a control means 5 for controlling the movement of the self-propelled machine 1, the position of the part P, and the like, a pressing member 7 for removing the target marker 6 attached to the automobile body W, and the like are provided. The target marker 6, the sensed member 2, the first sensor 3, the second sensor 4, the control means 5, and the pressing member 7 are installed on the lifting platform 8 of the self-propelled aircraft 1. In addition, the target marker 6 incorporates a mechanism that can be automatically separated from the automobile body W by the action of the pressing member 7 and can be detached from the target marker 6. A detaching / collecting mechanism is constituted by the pressing member 7.

そして、本発明の実施の形態では、ターゲットマーカ6と被センシング部材2と第1センサ3と第2センサ4を一セットとするものを自走機1の昇降台8の前後に配置しており、自動車ボディWに対し、部品Pを二次元(平面)で位置決めすることができるようにされている。
このため、部品Pが自動車ボディWに対して捩れた状態で位置決めされることがなく、精度良く部品Pを自動車ボディWに組付けることができる。
And in embodiment of this invention, what makes the target marker 6, the to-be-sensed member 2, the 1st sensor 3, and the 2nd sensor 4 one set is arrange | positioned before and behind the raising / lowering stand 8 of the self-propelled aircraft 1. The part P can be positioned in two dimensions (plane) with respect to the automobile body W.
For this reason, the component P is not positioned in a state of being twisted with respect to the vehicle body W, and the component P can be assembled to the vehicle body W with high accuracy.

前記自走機1の昇降台8には、部品Pを支持するための治具11が設けられており、また、自走機1には、昇降台8を昇降させるための昇降機12や、走行を駆動する駆動部13や、締付け機(不図示)などが設けられており、前述のように、基本的に自走機1は、自動車ボディWと同期して走行するようにされている。   The elevator 11 of the self-propelled machine 1 is provided with a jig 11 for supporting the component P, and the self-propelled machine 1 includes an elevator 12 for raising and lowering the elevator 8 and traveling. And a tightening machine (not shown) are provided. As described above, the self-propelled machine 1 basically runs in synchronization with the automobile body W.

前記被センシング部材2は、ターゲットマーカ6に接続される線状部材としてのワイヤ2bと、ワイヤ2bを引き出し・巻き取り自在に収納するワイヤ巻き取り機2cを備えている。   The sensed member 2 includes a wire 2b as a linear member connected to the target marker 6, and a wire winder 2c for retracting and retracting the wire 2b.

前記第1センサ3は、図2に示すように、ターゲットマーカ6が自動車ボディW下面の所定部位に装着されているときのワイヤ2bの引き出し長さLを検出するロータリエンコーダであり、被センシング部材2のワイヤ巻き取り機2cの回転軸に取り付けられるとともに、ワイヤ2bが引き出され又は巻き取られることによる回転数(回転角度)からワイヤ2bの引き出し長さLを算出するようにされている。   As shown in FIG. 2, the first sensor 3 is a rotary encoder that detects a pull-out length L of the wire 2b when the target marker 6 is attached to a predetermined portion on the lower surface of the automobile body W. 2 is attached to the rotating shaft of the wire winding machine 2c, and the drawing length L of the wire 2b is calculated from the number of rotations (rotation angle) when the wire 2b is drawn or wound.

ワイヤ2bの引き出し長さの基準長さL0は、部品Pが自動車ボディW下面の所定位置に位置決めされた時のワイヤ2bの引き出し長さとしている。   The reference length L0 of the drawing length of the wire 2b is the drawing length of the wire 2b when the component P is positioned at a predetermined position on the lower surface of the automobile body W.

前記第2センサ4は、図2に示すように、ターゲットマーカ6が自動車ボディW下面の所定部位に装着されているときにワイヤ2bの存在位置(X1、Y1)を平面(二次元)で検出する変位センサである。   As shown in FIG. 2, the second sensor 4 detects the position (X1, Y1) of the wire 2b in a plane (two-dimensional) when the target marker 6 is attached to a predetermined part on the lower surface of the automobile body W. Displacement sensor.

第2センサ4は、一組の投光器4aと受光器4b、及びもう一組の投光器4cと受光器4dからなり、一方の投光器4aから放射される帯状のレーザ光Laと他方の投光器4cから放射される帯状のレーザ光Laを直角に交差させ、交差するレーザ光Laの領域にX・Y平面の検出領域Dを形成するようにしている。   The second sensor 4 includes a pair of projectors 4a and light receivers 4b, and another set of projectors 4c and light receivers 4d, and radiates from the band-shaped laser light La emitted from one projector 4a and the other projector 4c. The belt-shaped laser beams La are crossed at right angles to form a detection region D on the X / Y plane in the region of the intersecting laser beams La.

そして、ワイヤ2bが検出領域Dを貫通すると、ワイヤ2bがレーザ光Laを遮るので、その貫通位置(X1、Y1)が受光器4b、4dによって検出される。ワイヤ2bの基準位置(X0、Y0)は、検出領域Dの中心位置としている。基準位置(X0、Y0)は、部品Pが自動車ボディW下面の所定位置に位置決めされたときに、ワイヤ2bが検出領域Dを貫通するする位置(ワイヤ2bがX・Y平面の検出領域Dに対して垂直になる位置)である。   When the wire 2b penetrates the detection region D, the wire 2b blocks the laser light La, and the penetration position (X1, Y1) is detected by the light receivers 4b, 4d. The reference position (X0, Y0) of the wire 2b is the center position of the detection region D. The reference position (X0, Y0) is a position where the wire 2b penetrates the detection area D when the part P is positioned at a predetermined position on the lower surface of the automobile body W (the wire 2b is in the detection area D on the XY plane). (A position perpendicular to the above).

前記制御手段5は、図3に示すように、基準値L0、(X0、Y0)を設定する基準値設定部5aと、基準値L0、(X0、Y0)と現在値L、(X1、Y1)の偏差量(ずれ量)に相当する操作量を昇降機12と駆動部13に供給する操作部5bなどを備えている。   As shown in FIG. 3, the control means 5 includes a reference value setting unit 5a for setting reference values L0, (X0, Y0), a reference value L0, (X0, Y0), a current value L, (X1, Y1). ) And an operation unit 5b for supplying an operation amount corresponding to the deviation amount (deviation amount) to the elevator 12 and the drive unit 13.

そして、制御手段5は、第1センサ3の検出値(現在値)L、及び第2センサ4の検出値(現在値)(X1、Y1)が基準値L0、(X0、Y0)と一致するように自走機1の昇降機12と駆動部13を制御する。すなわち、図2に示すように、自走機1の駆動部13は、ワイヤ2bの引き出し長さのずれ量ΔL(=L−L0)、及びワイヤ2bの存在位置のずれ量ΔX(=X0−X1)、ΔY(=Y0−Y1)がゼロになるようにフィードバック制御される。   Then, the control means 5 matches the detection value (current value) L of the first sensor 3 and the detection value (current value) (X1, Y1) of the second sensor 4 with the reference values L0, (X0, Y0). Thus, the elevator 12 and the drive unit 13 of the self-propelled aircraft 1 are controlled. That is, as shown in FIG. 2, the driving unit 13 of the self-propelled aircraft 1 is configured such that the deviation amount ΔL (= L−L0) of the pull-out length of the wire 2b and the deviation amount ΔX (= X0−) of the existing position of the wire 2b. X1) and ΔY (= Y0−Y1) are feedback controlled so as to be zero.

前記ターゲットマーカ6は、図4、図5に示すように、下方の小径部から上方の大径部に向けてテーパ状に広がるテーパ部15tを有する本体15と、この本体15の上面から上方に突設され且つ上端部に大径頭部15gtを有する三本のガイドバー15gに対して上下動自在に係合するフック保持部材16を備えており、このフック保持部材16は、前記ガイドバー15gに戻しスプリング17を介して摺動自在に嵌合する三ヶ所の筒部16hと、中心に貫通孔を有する円板部16eと、この円板部16eの下面から下方に張り出す円周等間隔の三ヶ所の張出部16yを備えている。そして、前記筒部16hには、大径頭部15gtがスライド自在に嵌合する大径嵌合孔Hと、ガイドバー15gがスライド自在に嵌合する小径嵌合孔hが設けられ、また、前記張出部16yには、枢支ピン18によって三個のフック部材20がそれぞれ揺動自在に枢着されている。   As shown in FIGS. 4 and 5, the target marker 6 includes a main body 15 having a taper portion 15 t extending in a taper shape from a lower small diameter portion toward an upper large diameter portion, and upward from the upper surface of the main body 15. A hook holding member 16 is provided, which protrudes and engages with three guide bars 15g having a large-diameter head portion 15gt at the upper end so as to be movable up and down. The hook holding member 16 is provided with the guide bar 15g. The three cylindrical portions 16h that are slidably fitted via the return spring 17, the disc portion 16e having a through hole in the center, and the circumferential equal intervals projecting downward from the lower surface of the disc portion 16e The three overhang portions 16y are provided. The cylindrical portion 16h is provided with a large-diameter fitting hole H in which the large-diameter head portion 15gt is slidably fitted, and a small-diameter fitting hole h in which the guide bar 15g is slidably fitted. Three hook members 20 are pivotally attached to the overhanging portion 16y by pivot pins 18 so as to be swingable.

前記フック部材20は、上端側に、前記円板部16eの貫通孔を貫通して上方に延出し且つ外側に向けて張り出すフック爪部20aを有するとともに、下端側に、スプリング結合部20bを備えており、このスプリング結合部20bの両端部には、それぞれ隣接するフック部材20のスプリング結合部20b同士を引張り方向に付勢する引張りスプリング21が連結されている。
そして、隣接するスプリング結合部20同士を引張り方向に付勢することで、上端側のフック爪部20aが常時半径方向の外側に張り出すようにしている。
また、フック爪部20aの頂面fは、半径方向の外側に向けて下方に傾斜する傾斜面とされており、この頂面fは、自動車ボディW下面の装着孔q(図4)にフック爪部20aを挿入してセットする際、最初に頂面fが当該装着孔の周縁下面に当接し、更にターゲットマーカ6を上方に押し込むことによってフック爪部20aが縮径して装着孔q内に入り込み、入り込んだ後は、引張りスプリング21の作用によって径が広がり、フック爪部20aが装着孔qの周縁上部に引っ掛かるようにされている。
The hook member 20 has a hook claw portion 20a that extends upward through the through hole of the disk portion 16e on the upper end side and projects outward, and a spring coupling portion 20b on the lower end side. A tension spring 21 for urging the spring coupling portions 20b of the adjacent hook members 20 in the tension direction is connected to both ends of the spring coupling portion 20b.
And the adjacent spring coupling | bond part 20 is urged | biased in the pulling direction, and the hook nail | claw part 20a of the upper end side is always protruding outside in a radial direction.
Further, the top surface f of the hook claw portion 20a is an inclined surface that is inclined downward toward the outer side in the radial direction, and this top surface f is hooked into the mounting hole q (FIG. 4) on the lower surface of the automobile body W. When the claw portion 20a is inserted and set, the top surface f first comes into contact with the lower surface of the peripheral edge of the mounting hole, and further the target marker 6 is pushed upward to reduce the diameter of the hook claw portion 20a. After entering, the diameter is expanded by the action of the tension spring 21, and the hook claw portion 20a is hooked on the upper peripheral edge of the mounting hole q.

また、フック部材20の下端側寄りの中間部には、図7に示すようなカムローラ23が設けられ、以下に述べるカム部材22と係合自在にされている。   Further, a cam roller 23 as shown in FIG. 7 is provided at an intermediate portion near the lower end side of the hook member 20 so as to be freely engageable with a cam member 22 described below.

前記本体15の上面中央部には、図6、図7にも示すように、上端が円錐形に尖ったカム部材22が設けられており、本体15がフック保持部材16に対して近接方向に移動すると、前記カム部材22がカムローラ23に係合してフック部材20を枢支ピン18周りに揺動させ、それまで半径方向の外側に張り出していたフック爪部20aを半径方向の内側に後退させるようにしている。
この際、カム部材22の円錐形部の付根部分には、段差dを設けており(図7)、この段差dによって、カム部材22とカムローラ23を係合させた際、フック部材20の位置が一時的にロックされるようにしている。
As shown in FIGS. 6 and 7, a cam member 22 whose upper end is pointed in a conical shape is provided at the center of the upper surface of the main body 15, and the main body 15 is in the proximity of the hook holding member 16. When it moves, the cam member 22 engages with the cam roller 23 to swing the hook member 20 around the pivot pin 18, and the hook claw 20 a that has been protruding outward in the radial direction is retracted inward in the radial direction. I try to let them.
At this time, a step d is provided at the base portion of the conical portion of the cam member 22 (FIG. 7), and when the cam member 22 and the cam roller 23 are engaged by the step d, the position of the hook member 20 is determined. Is temporarily locked.

前記押圧部材7は、図4及び図6に示すように、中央部に嵌合孔7hを備えており、この嵌合孔7hは、ターゲットマーカ6の本体15のテーパ部15tに嵌合し得るようなテーパ状の孔とするとともに、ターゲットマーカ6を自動車ボディWに装着する前の状態では、ターゲットマーカ6の本体15のテーパ部15tが嵌合孔7hに嵌合して保持されるようにしている。
そして、ターゲットマーカ6が自動車ボディWに装着された状態で部品Pの組付けが完了し、ターゲットマーカ6を自動車ボディWから離脱させるときは、昇降台8を上昇させて押圧部材7によりターゲットマーカ6の本体15を上方に移動させることにより、図6(b)、図7(b)に示すように、カム部材22をカムローラ23に当接させてフック部材20を揺動させ、それまで外側に開いていたフック爪部20aの上端を内側に後退させる。
As shown in FIGS. 4 and 6, the pressing member 7 includes a fitting hole 7 h at the center, and the fitting hole 7 h can be fitted into the tapered portion 15 t of the main body 15 of the target marker 6. In the state before the target marker 6 is mounted on the automobile body W, the tapered portion 15t of the main body 15 of the target marker 6 is fitted and held in the fitting hole 7h. ing.
When the assembly of the parts P is completed with the target marker 6 mounted on the vehicle body W and the target marker 6 is to be detached from the vehicle body W, the lift 8 is raised and the target marker is moved by the pressing member 7. 6 (b) and FIG. 7 (b), the cam member 22 is brought into contact with the cam roller 23 and the hook member 20 is swung, as shown in FIGS. 6 (b) and 7 (b). The upper end of the hook claw portion 20a that has been opened is retracted inward.

次に、本発明に係る部品位置決め方法及びその装置の動作を、図8の作業手順を示すフローチャート、及び図9の装置の動作説明図に基づき説明する。
まず、ステップSP1において、原位置にある自走機1の昇降機12を下降させた状態で、部品Pを治具11にセットする。
Next, the operation of the component positioning method and apparatus according to the present invention will be described based on the flowchart showing the work procedure of FIG. 8 and the operation explanatory diagram of the apparatus of FIG.
First, in step SP1, the component P is set on the jig 11 with the elevator 12 of the self-propelled machine 1 in the original position lowered.

次いで、ステップSP2において、図9(a)に示すように、部品Pを治具11に支持させた状態で、自走機1をオーバーヘッドコンベア10で搬送されてくる自動車ボディWとほぼ同じ速度で走行するよう駆動し、自動車ボディWに同期追従させる。   Next, in step SP2, as shown in FIG. 9A, the self-propelled machine 1 is supported at the same speed as the automobile body W conveyed by the overhead conveyor 10 with the component P supported by the jig 11. The vehicle is driven to run, and is synchronized with the vehicle body W.

ステップSP3において、図9(b)に示すように、作業者がターゲットマーカ6を把持してワイヤ巻き取り部2cからワイヤ2bを引き出し、2つのターゲットマーカ6をそれぞれ自動車ボディW下面の所定の装着孔qに押し込んで装着する。すなわち、前述のように、フック部材20のフック爪部20aが装着孔qに入り込んで装着孔qの周縁上部に係合する。   In step SP3, as shown in FIG. 9B, the operator grasps the target marker 6 and pulls out the wire 2b from the wire take-up portion 2c, and attaches the two target markers 6 to the predetermined lower surface of the automobile body W, respectively. Install by pushing into the hole q. That is, as described above, the hook claw portion 20a of the hook member 20 enters the mounting hole q and engages with the upper peripheral edge of the mounting hole q.

すると、ステップSP4において、自走機1の昇降機12と駆動部13が、ワイヤ2bの引き出し長さのずれ量ΔL(=L−L0)と、存在位置のずれ量ΔX=(X0−X1)、ΔY(Y0−Y1)をゼロにするようフィードバック制御される。   Then, in step SP4, the elevator 12 and the drive unit 13 of the self-propelled aircraft 1 cause the wire 2b drawing length deviation amount ΔL (= L−L0) and the existing position deviation amount ΔX = (X0−X1), Feedback control is performed so that ΔY (Y0−Y1) becomes zero.

次いで、ステップSP5において、図9(c)に示すように、部品Pが自走機1の昇降機12と駆動部13によって、自動車ボディW下面の所定位置に位置決めされ、部品Pは締付け機により自動車ボディWに組み付けられる。
なお、この組付け時には、押圧部材7の嵌合孔7hがターゲットマーカ6の本体15に対して、概ね嵌合状態になるが、本体15に対して上方への押圧力が加わらないようにしている。
Next, in step SP5, as shown in FIG. 9C, the part P is positioned at a predetermined position on the lower surface of the automobile body W by the elevator 12 and the drive unit 13 of the self-propelled aircraft 1, and the part P is It is assembled to the body W.
At the time of this assembly, the fitting hole 7h of the pressing member 7 is generally fitted to the main body 15 of the target marker 6. However, an upward pressing force is not applied to the main body 15. Yes.

組付が完了すると、ステップSP6において、昇降機12により昇降台8が所定ストローク上方に持ち上げられる。すると、図6(b)、図7(b)に示すように、フック保持部材16の円板部16eは自動車ボディW下面に当接して移動することができない反面、本体15が持ち上げられるため、戻しスプリング17が縮まってカム部材22がカムローラ23に当接するようになり、フック爪部20aと装着孔qの係合が外れ、フック部材20は、カム部材22の段差dによってその姿勢が一時的にロックされる。そして、昇降機12により昇降台8を下降させると、フック爪部20aは装着孔qから離れて下降する。すなわち、フック部材20が自動的に取り外される。そして、最終的にステップSP7において、図9(c)に示すように、自走機1は元の状態に復帰する。   When the assembly is completed, the elevator platform 8 is lifted upward by a predetermined stroke by the elevator 12 in step SP6. Then, as shown in FIGS. 6 (b) and 7 (b), the disc portion 16e of the hook holding member 16 cannot move in contact with the lower surface of the automobile body W, but the main body 15 is lifted. The return spring 17 contracts so that the cam member 22 comes into contact with the cam roller 23, the hook claw portion 20 a is disengaged from the mounting hole q, and the hook member 20 is temporarily brought into a posture by the step d of the cam member 22. Locked to. When the elevator 8 is lowered by the elevator 12, the hook claw portion 20a is moved away from the mounting hole q. That is, the hook member 20 is automatically removed. And finally in step SP7, as shown in FIG.9 (c), the self-propelled aircraft 1 returns to the original state.

以上のような要領により、部品対象物を正確且つ確実に位置決めできるとともに、効率的に作業することができ、しかも人的作業の削減を図ることが可能となる。   According to the above procedure, it is possible to accurately and surely position the component object, to work efficiently, and to reduce human work.

本発明によれば、係合部材を部品組付け対象物にセットするだけで、作業環境に左右されずに部品を正確且つ確実に部品組付け対象物の所定位置に位置決めすることができ、しかも人的労力の削減が図れるため、自動車生産工場の組立てライン等の簡易自動化に寄与する。   According to the present invention, it is possible to accurately and reliably position a part at a predetermined position of a part assembly target without being influenced by the work environment by simply setting the engaging member on the part assembly target. Since it can reduce human labor, it contributes to simplified automation of assembly lines at automobile production plants.

本発明に係る部品位置決め装置の概要図Schematic diagram of a component positioning device according to the present invention センサと制御動作の説明図Illustration of sensor and control operation 制御系のブロック構成図Block diagram of control system ターゲットマーカの斜視図Perspective view of target marker (a)はターゲットマーカの平面図、(b)は同正面図(A) is a plan view of the target marker, and (b) is a front view thereof. ターゲットマーカの取外し・回収機構の作用を説明する説明図Explanatory drawing explaining the action of the target marker removal / recovery mechanism ターゲットマーカのカム部材とカムフロアの係合状態の説明図Explanatory drawing of engagement state of cam member and cam floor of target marker 部品位置決め方法の作業手順のフローチャート図Flowchart diagram of work procedure of component positioning method 部品位置決め装置の動作説明図Operation explanatory diagram of component positioning device

符号の説明Explanation of symbols

1…自走機、2…被センシング部材、2b…ワイヤ(線状部材)、3…第1センサ、4…第2センサ、5…制御手段、6…ターゲットマーカ(係合部材)、P…部品、W…自動車ボディ(部品組付け対象物)。 DESCRIPTION OF SYMBOLS 1 ... Self-propelled machine, 2 ... Sensing member, 2b ... Wire (linear member), 3 ... 1st sensor, 4 ... 2nd sensor, 5 ... Control means, 6 ... Target marker (engaging member), P ... Parts, W ... Auto body (parts to be assembled).

Claims (2)

部品組付け対象物に対して自走機に支持された部品を位置決めする部品位置決め方法であって、前記部品組付け対象物に、自走機から引き出し・巻き取り自在な線状部材の先端の係合部材を装着する工程と、前記線状部材の長さ及び存在位置を検出して前記部品組付け対象物と部品との相対位置ずれを無くすように前記自走機を移動させる工程と、前記位置ずれが無くなった状態で前記部品を前記部品組付け対象物に組付ける工程と、組付け後、前記自走機を移動させて前記係合部材を部品組付け対象物から自動的に取り外して受取り回収する工程と、からなることを特徴とする部品位置決め方法。 A part positioning method for positioning a part supported by a self-propelled machine with respect to a part assembly target, wherein the tip of a linear member that can be pulled out and wound up from the self-propelled machine is attached to the part assembly target. A step of mounting an engaging member, a step of moving the self-propelled machine so as to eliminate the relative positional deviation between the component assembly target and the component by detecting the length and the existing position of the linear member, A step of assembling the component to the component assembly object in a state where the positional deviation is eliminated, and after assembly, the self-propelled machine is moved to automatically remove the engagement member from the component assembly object. And a step of receiving and collecting the component. 部品組付け対象物に対して自走機に支持された部品を位置決めする部品位置決め装置であって、自走機に設けられ且つ該自走機から引き出し・巻き取り自在な線状部材と、この線状部材の先端に設けられ且つ前記部品組付け対象物に着脱自在な係合部材と、前記線状部材の長さ及び存在位置を確認して前記自走機の移動量を制御する制御手段と、前記自走機に設けられ且つ部品組付け対象物に装着される係合部材を自動的に取り外して回収する取外し・回収機構と、を備えたことを特徴とする部品位置決め装置。 A component positioning device for positioning a component supported by a self-propelled machine with respect to a component assembly target, the linear member provided in the self-propelled machine and freely drawable / retractable from the self-propelled machine, An engagement member provided at the tip of a linear member and detachable from the component assembly target, and a control means for controlling the amount of movement of the self-propelled aircraft by confirming the length and position of the linear member And a removal / recovery mechanism that automatically removes and collects an engagement member that is provided on the self-propelled machine and is mounted on the component assembly target.
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US20100164250A1 (en) * 2007-04-03 2010-07-01 Renault S.A.S. Method for mounting a transverse understructure member and a technical front panel
US8312630B2 (en) * 2006-04-06 2012-11-20 Renault S.A.S. Method for mounting underbody elements on a motor vehicle

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US20100164250A1 (en) * 2007-04-03 2010-07-01 Renault S.A.S. Method for mounting a transverse understructure member and a technical front panel
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