JP4331036B2 - Friction stir welding equipment for hollow profile - Google Patents

Friction stir welding equipment for hollow profile Download PDF

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JP4331036B2
JP4331036B2 JP2004102402A JP2004102402A JP4331036B2 JP 4331036 B2 JP4331036 B2 JP 4331036B2 JP 2004102402 A JP2004102402 A JP 2004102402A JP 2004102402 A JP2004102402 A JP 2004102402A JP 4331036 B2 JP4331036 B2 JP 4331036B2
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rotating jig
friction stir
stir welding
backing member
rotating
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JP2005288444A (en
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正樹 熊谷
直 田中
啓一 木田
晃二 田中
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Sumitomo Light Metal Industries Ltd
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Description

本発明は、中空形材の摩擦撹拌接合装置に係り、特に、互いに対向して平行に位置する複数の面板が、相互の対向面間に延びる複数のリブにて一体的に連結されてなる構造の中空形材の複数を摩擦撹拌接合するに際して、それら複数の中空形材の各面板同士が互いに突き合されて形成される複数の突合せ部を同時に摩擦撹拌接合する摩擦撹拌接合操作に好適に使用される摩擦撹拌接合装置に関するものである。
The present invention relates to a friction stir contact GoSo location of the hollow shape member, in particular, a plurality of face plates lying parallel opposite one another, it is integrally connected by a plurality of ribs extending between mutually facing surfaces in a plurality of hollow shape members made structures FSW, friction stir welding operation you simultaneously FSW plurality of butted portions of each surface plate between the plurality of hollow shape members are formed by butted together The present invention relates to a friction stir welding apparatus that is preferably used for the above.

従来から、互いに対向して平行に位置する複数の面板が、相互の対向面間に延びる複数のリブにて一体的に連結されてなる構造の中空形材が、様々な用途に用いられている。例えば、そのような中空形材のうち、互いに対向して平行に位置する面板の二つが、それらの対向面間に延びる複数のリブにて一体的に連結されてなる、所謂ダブルスキン構造(二面構造)を有するアルミニウム合金製の中空形材が、車両や航空機等の側面構体や床構体、或いは建物の屋根構体等に利用されている。   Conventionally, a hollow member having a structure in which a plurality of face plates facing and parallel to each other are integrally connected by a plurality of ribs extending between the opposing faces has been used for various applications. . For example, in such a hollow profile, two so-called double skin structures in which two face plates positioned parallel to each other are integrally connected by a plurality of ribs extending between the facing surfaces. 2. Description of the Related Art A hollow shape member made of an aluminum alloy having a surface structure is used for a side structure, a floor structure, a roof structure of a building, or the like such as a vehicle or an aircraft.

ところで、このような中空形材は、多くの場合、押出成形によって成形されているところから、幅寸法が制限されてしまう。そのため、かかる中空形材は、一般に、複数のものが、対応する面板の端面同士において突き合わされ、かかる突合せ部が接合されて、広幅の接合体(パネル)とされた上で、上記の如き各種の構体として、使用されている。   By the way, in many cases, the width dimension of such a hollow shape member is limited since it is formed by extrusion molding. Therefore, in general, a plurality of such hollow shapes are abutted at end faces of corresponding face plates, and the abutting portions are joined to form a wide joined body (panel). It is used as a structure.

そして、近年では、そのような複数の中空形材の突合せ接合手法の一種として、アーク溶接等とは異なって、溶融溶接特有のブローホールや凝固割れ等の接合欠陥の発生が有利に回避され得る摩擦撹拌接合手法が、一部で適用されてきているのであるが、複数の中空形材の突合せ接合に際しては、面板の対向方向に形成された複数の突合せ部の全てを接合する必要があるところから、それら複数の突合せ部を一つずつ接合する従来の摩擦撹拌接合手法では、接合操作が煩雑となってしまうばかりでなく、対向方向に形成された複数の突合せ部を別々に摩擦撹拌接合すると、先に接合される突合せ部に形成される接合部が若干収縮して、面板に僅かな撓みが生じ、そによって、最終的に得られる接合体に歪みが発生するといった不具合があった。
And in recent years, as a kind of butt joint method of such a plurality of hollow shapes, unlike arc welding or the like, the occurrence of joint defects such as blow holes and solidification cracks peculiar to fusion welding can be advantageously avoided. The friction stir welding method has been applied in part, but when butt-joining multiple hollow profiles, it is necessary to join all of the multiple butt sections formed in the facing direction of the face plate Therefore, in the conventional friction stir welding method for joining the plurality of butted portions one by one, not only the joining operation becomes complicated, but also when the plurality of butted portions formed in the opposing direction are separately friction stir welded. , contracts junction formed butt portion joined to the previously slightly flex slightly to the faceplate occurs, the Re their, there is a problem such distortion occurs in the bonding member finally obtained .

かかる状況下、複数の中空形材を摩擦撹拌接合により突合せ接合するに際して、接合操作を簡略化し得る技術が、下記特許文献1において提案されている。即ち、そこでは、摩擦撹拌接合装置として、互いに所定の距離を隔てて、同軸的に配された複数の回転治具と、回転治具との同軸上において、回転治具と交互に位置するように、隣り合う回転治具の間に配された少なくとも一つの裏当て部材と、回転治具から裏当て部材側に向かって同軸的延びる複数のプローブとが、位置固定に設けられた摩擦撹拌接合装置が、用いられている。   Under such circumstances, a technique that can simplify the joining operation when butt-joining a plurality of hollow profiles by friction stir welding is proposed in Patent Document 1 below. That is, there, as a friction stir welding apparatus, a plurality of rotating jigs arranged coaxially at a predetermined distance from each other and coaxially arranged with the rotating jig so as to be positioned alternately with the rotating jig. Further, at least one backing member disposed between adjacent rotating jigs and a plurality of probes extending coaxially from the rotating jig toward the backing member side are friction stir welds provided in a fixed position. The device is used.

そして、例えば、二つの面板が上下方向に対向位置せしめられたダブルスキン構造の中空形材の二つを突合せ接合する際には、先ず、二つの中空形材が、各面板の端面同士において突き合わされて、上下方向に対向して位置する二つの突合せ部が形成せしめられる。その後、上下の面板の対向面間(上下の突合せ部の対向面間)に、隣り合う回転治具と裏当て部材とが位置せしめられて、各突合せ部の上面に、回転治具が接触せしめられる一方、少なくとも上側の突合せ部の下面に裏当て部材が接触せしめられると共に、それら回転治具と裏当て部材の間に位置するプローブが、各突合せ部を貫通するように配置された状態で、回転治具と裏当て部材とプローブとが一体回転せしめられ、そして、そのような一体回転下で、各突合せ部に対して相対移動せしめられる。これによって、二つの突合せ部が、同時に摩擦撹拌接合されるようになっているのである。   For example, when butt-joining two of the hollow skins having a double skin structure in which the two face plates are opposed to each other in the vertical direction, first, the two hollow shapes are pushed at the end surfaces of the face plates. Together, two butted portions positioned opposite to each other in the vertical direction are formed. After that, the adjacent rotating jig and backing member are positioned between the opposing surfaces of the upper and lower face plates (between the opposing surfaces of the upper and lower butting parts), and the rotating jig is brought into contact with the upper surface of each abutting part. On the other hand, the backing member is brought into contact with at least the lower surface of the upper abutting portion, and the probe positioned between the rotating jig and the backing member is disposed so as to penetrate each abutting portion, The rotating jig, the backing member, and the probe are integrally rotated, and are moved relative to each abutting portion under such integral rotation. As a result, the two butted portions are simultaneously friction stir welded.

このような摩擦撹拌接合技術によれば、複数の突合せ部が、一挙に接合され得るだけでなく、互いに対向するように形成された突合せ部を同時に摩擦撹拌接合することで、最終的に得られる接合体での歪みの発生が有利に解消乃至は抑制され得る。しかも、回転治具と共に、裏当て部材も、突合せ部と接した状態で、プローブと一体回転せしめられるため、回転治具と突合せ部の上面との間と、裏当て部材と突合せ部の下面との間の両方において生ずる摩擦熱により、突合せ部の全体が十分に可塑化されて、突合せ部全体のメタル同士が、より十分に撹拌され得る。従って、目的とする接合体が、歪みの少ない健全な構造と十分な接合強度とをもって、容易に且つ効率的に得られることとなるのである。   According to such a friction stir welding technique, a plurality of butt portions can be joined at a time, and finally obtained by friction stir welding of butt portions formed to face each other at the same time. Generation | occurrence | production of the distortion in a conjugate | zygote can be eliminated or suppressed advantageously. In addition to the rotating jig, the backing member is also rotated integrally with the probe in contact with the abutting portion, and therefore, between the rotating jig and the upper surface of the abutting portion, and between the backing member and the lower surface of the abutting portion, Due to the frictional heat generated both in between, the entire butt portion is sufficiently plasticized, and the metals in the entire butt portion can be more sufficiently agitated. Therefore, the intended joined body can be obtained easily and efficiently with a sound structure with little distortion and sufficient joining strength.

ところが、このような従来の中空形材の摩擦撹拌接合技術では、互いに軸方向に隣り合うように位置せしめられて、対向位置する突合せ部の下面と上面とに接触せしめられる回転治具と裏当て部材とが、摩擦撹拌接合装置に対して、予め定められた間隔をもって位置固定に設けられているため、例えば、接合に供される中空形材の面板間の距離(対向位置するように形成される突合せ部の距離)がそれぞれ異なる複数種類の接合体を得る際等に、隣り合う回転治具と裏当て部材との間の間隔が、接合に供される中空形材の面板間の距離に応じた寸法とされた専用の摩擦撹拌接合装置を、目的とする接合体の種類に応じた種類だけ準備しなけらればならず、それが、大きな経済負担となっていた。   However, in such a conventional friction stir welding technique for hollow profiles, a rotating jig and a backing that are positioned so as to be adjacent to each other in the axial direction and are brought into contact with the lower surface and the upper surface of the facing butting portions. Since the member is provided in a fixed position with a predetermined interval with respect to the friction stir welding apparatus, for example, the distance between the face plates of the hollow profile member used for joining (to be opposed to each other) is formed. The distance between adjacent rotating jigs and backing members is equal to the distance between the face plates of the hollow shape members used for joining, for example, when obtaining multiple types of joined bodies having different distances between the butting parts). It is necessary to prepare a dedicated friction stir welding apparatus having a size according to the type according to the type of the target joined body, which is a great economic burden.

また、それに加えて、回転治具から延び出すプローブも、回転治具に対して位置固定に設けられているところから、そのようなプローブの長さを変化させることが出来ず、それ故、例えば、接合に供される中空形材の面板の厚さがそれぞれ異なる複数種類の接合体を得る際等において、プローブの長さよりも、面板の厚さ、つまり突合せ部の厚さが大きい場合には、突合せ部全体の中で、プローブが貫通位置せしめられない部分でのメタルが十分に撹拌され得ず、そのために、接合が不十分となってしまい、その結果、接合体に対するプレス加工等の後加工時に、接合に亀裂等が生ずる、所謂キッシングボンド等の接合不良が生ずる恐れがあったのである。
In addition, since the probe extending from the rotating jig is also provided at a fixed position with respect to the rotating jig, the length of such a probe cannot be changed. When obtaining multiple types of joined bodies with different thickness of the face plate of the hollow shape material used for joining, etc., when the thickness of the face plate, that is, the thickness of the butt portion is larger than the length of the probe In the entire butt portion, the metal in the portion where the probe cannot be penetrated cannot be sufficiently agitated, so that the joining becomes insufficient, and as a result, after the press work on the joined body, etc. At the time of processing, there is a risk that a bonding failure such as a so-called kissing bond occurs in the bonded portion .

なお、回転治具に対して、プローブを、軸方向に相対移動と為した摩擦撹拌接合装置として、下記特許文献2に明らかにされた装置が、知られているが、かかる装置では、接合されるべき突合せ部が複数存在する中空形材の摩擦撹拌接合作業の簡略化が実現され得ないのである。   As a friction stir welding apparatus in which the probe is moved relative to the rotating jig in the axial direction, an apparatus disclosed in the following Patent Document 2 is known. The simplification of the friction stir welding operation of the hollow shape member having a plurality of butt portions to be achieved cannot be realized.

特開平11−347753JP-A-11-347753 米国特許第6199745号明細書US Pat. No. 6,1997,745

ここにおいて、本発明は、上述せる如き事情を背景にして為されたものであって、その解決課題とするところは、接合に供される中空形材の面板間の距離がそれぞれ異なる複数種類の接合体を、歪みの少ない健全な構造と十分な接合強度をもって、容易に且つ低コストに得ることが出来る中空形材の摩擦撹拌接合方法、接合に供される中空形材の面板の厚さがそれぞれ異なる複数種類の接合体を、キッシングボンド等の接合不良のない健全で且つ十分な強度を有する接合部をもって、安定的に得ることが出来る中空形材の摩擦撹拌接合方法において有利に使用され得る中空形材の摩擦撹拌接合装置を提供することを、その解決課題とするものである。
Here, the present invention has been made in the background as described above, and the problem to be solved is that there are a plurality of kinds of different distances between the face plates of the hollow shape member to be joined. the conjugate, with less healthy structure and sufficient bonding strength distortion, easily and FSW method of hollow profile that can be obtained at a low cost and, a surface thickness of plate of the hollow shape member subjected to the joining advantageously Oite but a different type of conjugate, respectively, with a joint having healthy and sufficient strength without bonding defects such as kissing bond, the FSW how the hollow profile that can be obtained stably providing a friction stir welding apparatus of the hollow profile that can be used, it is an solving problems of that.

そして、本発明にあっては、中空形材の摩擦撹拌接合装置に係る課題の解決のために、その第一の態様とするところは、互いに対向して平行に位置する上側及び下側の二つの面板が、それら対向面間に延びる複数のリブにて一体的に連結されてなる構造の中空形材の二つを、対応する面板の端面同士において突き合わせて、それら面板の対向方向において形成された上側及び下側二つの突合せ部を同時に摩擦撹拌接合するための装置であって、前記上側突合せ部における上側面板上面に接触せしめられるショルダ面を備えた円環板状のショルダ部が下端部に設けられた、軸方向に貫通する内孔を有し、軸回りに回転可能で且つ軸方向に移動可能とされた円筒形状の第一回転治具と、前記下側突合せ部における下側面板上面に接触せしめられるショルダ面を備えた円環板形状のショルダ部が下端部に設けられた、前記第一回転治具の内孔の下端開口部から下方に突出した状態で、該内孔内に同軸的に且つ軸方向に相対移動可能に挿入、配置されて、軸回りに回転可能で且つ軸方向に移動可能とされた第二回転治具と、該第二回転治具のショルダ部の中心部から同軸的に下方に突出するように設けられて、軸回りに回転可能で且つ軸方向に移動可能とされた突出部にて構成され、該突出部の軸回りの回転によって前記下側突合せ部の摩擦攪拌接合操作が実施される下側プローブと、前記上側突合せ部における上側面板下面に接触せしめられる裏当て面を上面とした円環板形状の当接部と、該当接部の裏当て面上に同軸的に一体形成された円筒状の挿入部とからなり、該挿入部が前記第一回転治具の内孔とそこに挿入される前記第二回転治具の挿入部位との間隙内に同軸的に且つ軸方向に相対移動可能に挿入、配置されて、軸回りに回転可能で且つ軸方向に移動可能とされた裏当て部材と、該裏当て部材における前記挿入部の前記当接部側となる基部側部位にて構成され、該裏当て部材の軸回りの回転に基づく該基部側部位の回転によって前記上側突合せ部の摩擦攪拌接合操作が実施される上側プローブとを、含んで構成されていることを特徴とする中空形材の摩擦撹拌接合装置にある。
In the present invention, in order to solve the problems related to the friction stir welding apparatus for hollow profiles, the first aspect is that the upper and lower two parts facing each other in parallel are arranged. Two face plates are integrally connected by a plurality of ribs extending between the facing surfaces, and two of the hollow shape members are abutted with each other at the end surfaces of the corresponding face plates, and formed in the facing direction of the face plates. An apparatus for simultaneously friction stir welding the upper and lower two butted portions, and an annular plate-shaped shoulder portion having a shoulder surface brought into contact with the upper surface of the upper side plate in the upper butted portion A cylindrical first rotating jig provided at the lower end portion and having an inner hole penetrating in the axial direction, rotatable about the axis and movable in the axial direction, and a lower portion in the lower butt portion The top of the side plate An annular plate-shaped shoulder portion provided with a shoulder surface is provided at the lower end portion, and protrudes downward from the lower end opening portion of the inner hole of the first rotating jig, and is coaxial with the inner hole and A second rotating jig that is inserted and arranged so as to be relatively movable in the axial direction, is rotatable about the axis and is movable in the axial direction, and is coaxial from the center of the shoulder portion of the second rotating jig. The lower abutting portion is agitated by rotation around the axis of the projecting portion. The projecting portion is provided so as to project downward, and is rotatable about the axis and movable in the axial direction. A lower probe on which the joining operation is performed, an annular plate-shaped abutting portion whose upper surface is a backing surface brought into contact with the lower surface of the upper side plate in the upper butt portion, and a coaxial on the backing surface of the corresponding contacting portion A cylindrical insertion portion integrally formed, and the insertion portion is the first insertion portion. Coaxially inserted in the gap between the inner hole of the rotating jig and the insertion site of the second rotating jig inserted therein and disposed so as to be relatively movable in the axial direction, and rotatable around the axis; A backing member that is movable in the axial direction, and a base portion that is based on a rotation around the axis of the backing member, which is configured by a base side portion that is the contact portion side of the insertion portion of the backing member A hollow stirrer friction stir welding apparatus comprising: an upper probe that performs a friction stir welding operation of the upper butt portion by rotation of a side portion .

また、このような本発明に従う中空形材の摩擦撹拌接合装置の第二の態様においては、前記下側プローブが、前記第二回転治具に対して一体的に設けられている。
Moreover, in the second aspect of the friction stir welding apparatus for hollow profiles according to the present invention, the lower probe is provided integrally with the second rotating jig.

さらに、本発明においては、中空形材の摩擦撹拌接合装置に係る課題の解決のために、その第三の態様とするところは、前記第二回転治具を軸方向に貫通するように、同軸的に回転可能で且つ軸方向に相対移動可能に回転ロッドが配設され、該回転ロッドの該第二回転治具における前記ショルダ部から下方に突出する部位にて、前記下側プローブが構成されている。
Furthermore, in the present invention, in order to solve the problem related to the friction stir welding apparatus for hollow profiles, the third aspect is that the second rotating jig is coaxially penetrated in the axial direction. A rotating rod is disposed so as to be rotatable relative to the axial direction, and the lower probe is formed at a portion of the rotating rod protruding downward from the shoulder portion of the second rotating jig. ing.

なお、このような本発明に従う中空形材の摩擦撹拌接合装置の有利に第四の態様では、前記下側突合せ部における下側面板下面に接触せしめられる裏当て面を上面とした円環板形状の先端裏当て部材が下端部に一体的に設けられた回転ロッドが、前記第二回転治具を軸方向に貫通するように、同軸的に回転可能で且つ軸方向に相対移動可能に配設され、該回転ロッドの前記先端裏当て部材側となる基部側部位にて、前記下側プローブが構成されている。
In the fourth aspect of the friction stir welding apparatus for hollow profile according to the present invention as described above, in the fourth aspect, an annular plate shape having an upper surface as a backing surface that is brought into contact with the lower surface of the lower surface plate in the lower butt portion. The rotating rod with the tip backing member integrally provided at the lower end portion is coaxially rotatable and relatively movable in the axial direction so as to penetrate the second rotating jig in the axial direction. The lower probe is configured at a base side portion of the rotating rod on the tip backing member side.

また、本発明に従う中空形材の摩擦撹拌接合装置の第の態様では、前記中空形材が、互いに対向した平行に位置する前記面板の二つが、それらの対向面間に延びる前記複数のリブにて一体的に連結されてなるダブルスキン構造のアルミニウム合金押出形材にて、構成される。
Moreover, in the fifth aspect of the friction stir welding apparatus for hollow profiles according to the present invention, the plurality of ribs in which the hollow profiles are parallel to each other and the two face plates positioned parallel to each other extend between the opposed surfaces. It is comprised by the aluminum alloy extrusion shape material of the double skin structure integrally connected by.

すなわち、このような本発明に従う中空形材の摩擦撹拌接合装置における第一の態様にあっては、二つの面板を有する中空形材が突き合わされることにより、それらの面板の対向方向において形成される二つの突合せ部を、同時に且つ十分に可塑化せしめて摩擦撹拌接合することが出来るため、目的とする接合体が、歪みの少ない健全な構造と、十分な接合強度とをもって、容易に且つ効率的に得られることとなる。
That is, in the first aspect of the friction stir welding apparatus for hollow profiles according to the present invention as described above, the hollow profiles having two face plates are brought into contact with each other to form in the opposing direction of the face plates. Since the two butted parts can be plasticized simultaneously and sufficiently by friction stir welding, the target joined body can be easily obtained with a sound structure with little distortion and sufficient joining strength. And it will be obtained efficiently.

そして、特に、かかる本発明装置は、面板の対向方向において隣り合って形成される突合せ部同士の間に位置せしめられる回転治具と裏当て部材との間隔が、接合に供される中空形材の面板間の距離、つまり、面板の対向方向に隣り合う突合せ部同士の間の距離に応じた寸法となるように、それら回転治具と裏当て部材とを接近/離隔移動せしめて、隣り合う突合せ部のそれぞれに接触させるようにしたものであるため、例えば、接合に供される中空形材の面板間の距離がそれぞれ異なる複数種類の接合体を得る際にあっても、一種類の装置を汎用的に使用することが出来、それによって、面板の対向方向において形成される突合せ部同士の間に位置せしめられる回転治具と裏当て部材の間隔が、接合に供される中空形材の面板間の距離に応じた寸法とされた専用の摩擦撹拌接合装置を、目的とする接合体の種類に応じた種類だけ準備する必要が、有利に解消され得る。
In particular, the device according to the present invention is a hollow shape member in which the interval between the rotating jig and the backing member, which are positioned adjacent to each other in the facing direction of the face plate, is used for joining. The rotating jig and the backing member are moved close to each other so as to have a size corresponding to the distance between the face plates, that is, the distance between the facing portions adjacent to each other in the facing direction of the face plates. Since each of the butted portions is brought into contact with each other, for example, even when obtaining a plurality of types of joined bodies having different distances between the face plates of the hollow shape materials to be joined, one type of apparatus is used. Can be used for general purposes, whereby the interval between the rotating jig and the backing member positioned between the butted portions formed in the facing direction of the face plate is the same as that of the hollow shape member to be joined. Depending on the distance between face plates And the friction stir welding apparatus of dedicated that is dimensioned, is necessary to prepare only the type corresponding to the type of the bonded body of interest, it can be advantageously solved.

従って、かくの如き本発明に従う中空形材の摩擦撹拌接合装置によれば、接合に供される中空形材の面板間の距離がそれぞれ異なる複数種類の接合体を、十分な接合強度をもって、容易に且つ低コストに得ることが出来るのである。
Therefore, according to the friction stir welding apparatus for hollow profiles according to the present invention as described above, a plurality of types of joined bodies having different distances between the face plates of the hollow profiles to be joined can be easily obtained with sufficient joining strength. In addition, it can be obtained at low cost.

また、本発明に従う中空形材の摩擦撹拌接合装置、特にその第三、第四の態様は、プローブ手段の各突合せ部への貫通部位の長さが、接合に供される中空形材の面板の厚さに応じた寸法となるように、プローブ手段を、裏当て部材と回転治具とに対して軸方向に相対移動せしめて、各突合せ部を貫通するように位置せしめるものであるため、例えば、接合に供される中空形材の面板の厚さがそれぞれ異なる複数種類の接合体を得る際にあっても、面板の厚さの変化に伴う突合せ部の厚さに応じて、プローブ手段の突合せ部への貫通部位の長さを適宜に変動させることが出来、それによって、プローブ手段を、各突合せ部の一方側の面から他方側の面に至るまで、各突合せ部を貫通するように、確実に位置させることが可能となる。そして、それによって、各突合せ部の全体のメタルが、プローブ手段にて十分に撹拌され得、以て、各突合せ部が、より十分に且つ確実に接合され得る。
Moreover, the friction stir welding apparatus for hollow profiles according to the present invention , particularly the third and fourth aspects thereof, is a hollow profile face plate to be used for joining in which the length of the penetrating portion to each butt portion of the probe means is Since the probe means is moved relative to the backing member and the rotating jig in the axial direction so as to have a dimension according to the thickness of the butt, it is positioned so as to penetrate each butted portion. For example, even when obtaining a plurality of types of joined bodies with different thicknesses of the face plate of the hollow shape material used for joining, the probe means according to the thickness of the butt portion accompanying the change in the thickness of the face plate The length of the penetrating part to the abutting portion can be appropriately changed, so that the probe means penetrates each abutting portion from the one side surface to the other side surface of each abutting portion. In addition, it is possible to position it reliably. Thereby, the entire metal of each butt portion can be sufficiently agitated by the probe means, so that each butt portion can be more sufficiently and reliably joined.

従って、このような本発明に従う中空形材の摩擦撹拌接合装置によれば、接合に供される中空形材の面板面板の厚さがそれぞれ異なる複数種類の接合体を、キッシングボンド等の接合不良のない健全で且つ十分な接合強度を有する接合部をもって、安定的に得ることが出来る。
Therefore, according to such a friction stir welding apparatus for hollow profiles according to the present invention, a plurality of types of joined bodies having different thicknesses of face plates of the hollow profiles to be joined to each other are poorly bonded such as kissing bonds. It is possible to stably obtain a bonded portion having no sound and sufficient bonding strength.

そして、本発明に従う中空形材の摩擦撹拌接合装置においては、接合に供される中空形材の面板間の距離がそれぞれ異なる複数種類の接合体を得る際に、極めて有利に使用され得るのであり、それによって、そのような目的とする複数種類の接合体を、歪みのない健全な構造と十分な接合強度をもって、容易に且つ低コストに製造することが可能となる。
Then, Oite friction stir welding equipment hollow shape member according to the present invention, when the distance between face plates of the hollow profile which is subjected to bonding to obtain a different type of conjugate, respectively, is very advantageously used As a result, it is possible to easily and inexpensively manufacture a plurality of types of bonded bodies having such a purpose with a sound structure without distortion and sufficient bonding strength.

また、本発明に従う中空形材の摩擦撹拌接合装置における第の態様によれば、ダブルスキン構造のアルミニウム合金押出形材の複数が、上述の如き数々の優れた特徴をもって、極めて有利に摩擦撹拌接合され得ることとなる。
In addition, according to the fifth aspect of the friction stir welding apparatus for hollow profiles according to the present invention, a plurality of aluminum alloy extruded profiles having a double skin structure have a number of excellent features as described above, and are extremely advantageous for friction stirring. It can be joined.

以下、本発明を更に具体的に明らかにするために、本発明に係る中空形材の摩擦撹拌接合装置の構成について、図面を参照しつつ、詳細に説明することとする。
Hereinafter, to clarify the present invention more specifically, the configuration of the friction stir welding apparatus of the air profile in Ru engages the present invention, with reference to the drawings, there will be described in detail.

先ず、図1には、本発明に従って、二つの中空形材を摩擦撹拌接合して、広幅パネルを得る一例が、概略的に示されている。かかる図1から明らかなように、ここでは、摩擦撹拌接合される二つの中空形材10a,10bのそれぞれが、互いに上下方向に対向して、平行に位置せしめられた、平板形態を呈する上面板12と下面板14とを有し、かかる上及び下面板10,12が、それらの対向面間に延びる複数のリブ16(ここでは、一つのみを示す)にて一体的に連結されてなる、ダブルスキン構造(二面構造)をもって、構成されている。また、それら各中空形材10は、何れも、アルミニウム合金製の押出形材からなっている。なお、この中空形材10を与える材質は、アルミニウム合金に何等限定されるものではなく、摩擦撹拌接合可能な金属材料であれば良く、また、その成形手法も、例示の押出手法に特に限定されるものではない。
First, in FIG. 1, the present onset Ming Therefore, the friction stir welding the two hollow profile, an example of obtaining a wide panel is shown schematically. As is apparent from FIG. 1, here, each of the two hollow members 10a and 10b to be friction stir welded is opposed to each other in the vertical direction and is positioned in parallel, and is a top plate having a flat plate shape. 12 and a lower surface plate 14, and the upper and lower surface plates 10 and 12 are integrally connected by a plurality of ribs 16 (only one is shown here) extending between the opposing surfaces. It has a double skin structure (two-sided structure). Each of these hollow shapes 10 is made of an extruded shape made of an aluminum alloy. The material that provides the hollow shape member 10 is not limited to an aluminum alloy, and any metal material that can be friction stir welded may be used. The forming method is also particularly limited to the illustrated extrusion method. It is not something.

そして、本実施形態においては、そのような二つの中空形材10a,10bに対する摩擦撹拌接合操作の実施に際して、先ず、それら二つの中空形材10a,10bが、幅方向(図1中、左右方向)に並べられて、それぞれの上面板12の幅方向の端面同士において突き合わされると共に、それぞれの下面板14の幅方向の端面同士において突き合わされる。これによって、かかる二つの中空形材10a,10bの間に、上面板12同士が突き合わされてなる上側突合せ部18と、下面板14同士が突き合わされてなる下側突合せ部20とが、上及び下面板12,14の対向方向たる上下方向に、上及び下面板12,14の対向面間の距離に応じた距離を隔てて、形成される。   In the present embodiment, when the friction stir welding operation is performed on the two hollow shape members 10a and 10b, first, the two hollow shape members 10a and 10b are arranged in the width direction (left and right direction in FIG. 1). ) And are abutted at the end surfaces in the width direction of the respective upper surface plates 12 and are also abutted at the end surfaces in the width direction of the respective lower surface plates 14. Thereby, between the two hollow shape members 10a and 10b, the upper butting portion 18 formed by abutting the upper surface plates 12 and the lower abutting portion 20 formed by abutting the lower surface plates 14 on each other, It is formed in the up-down direction, which is the opposing direction of the lower surface plates 12, 14, with a distance corresponding to the distance between the opposing surfaces of the upper and lower surface plates 12, 14.

次いで、それら二つの中空形材10a,10bが、所定の拘束治具(図示せず)にて拘束された後、二つの中空形材10a,10b間に形成された上側及び下側突合せ部18,20が摩擦撹拌接合されるのであるが、ここでは、この摩擦撹拌接合操作に用いられる摩擦撹拌接合装置22が、従来には見られない特別な構造を有しているのである。   Next, after the two hollow members 10a and 10b are restrained by a predetermined restraining jig (not shown), the upper and lower abutting portions 18 formed between the two hollow members 10a and 10b. , 20 are friction stir welded. Here, the friction stir welding apparatus 22 used for this friction stir welding operation has a special structure not seen in the prior art.

すなわち、摩擦撹拌接合装置22は、第一及び第二の二つの回転治具24,26を有している。それら二つの回転治具24,26のうち、第一回転治具24は、全体として、略円筒形状を有しており、その下端部の外周面に、径方向に所定寸法突出し、且つ周方向に連続して延びる外フランジ形態を呈する、円環板状のショルダ部28が、一体形成されている。このショルダ部28においては、その下端面が、水平方向に広がる平坦な円環面からなるショルダ面27とされている。   That is, the friction stir welding apparatus 22 has first and second two rotating jigs 24 and 26. Of these two rotating jigs 24 and 26, the first rotating jig 24 has a generally cylindrical shape as a whole, projects on the outer peripheral surface of the lower end thereof by a predetermined dimension in the radial direction, and is in the circumferential direction. An annular plate-shaped shoulder portion 28 having an outer flange shape extending continuously is integrally formed. In the shoulder portion 28, the lower end surface is a shoulder surface 27 formed of a flat annular surface extending in the horizontal direction.

また、第二回転治具26は、全体として、略円柱形状を有しており、その下端部には、下端面が水平方向に広がる円形の平坦面からなるショルダ面30とされた、円環板状のショルダ部32が、一体形成されている。更に、かかる第二回転治具26においては、そのようなショルダ部32の下端面の中心部に対して、下方に所定寸法突出する、高さの低い円柱状の突起からなる、プローブ手段としての下側プローブ34が、同軸上において、一体的に設けられている。   Further, the second rotating jig 26 has a substantially cylindrical shape as a whole, and a lower end portion of the second rotating jig 26 is an annular ring having a shoulder surface 30 formed of a circular flat surface extending in the horizontal direction. A plate-shaped shoulder portion 32 is integrally formed. Further, in the second rotating jig 26, as a probe means comprising a columnar protrusion having a low height protruding downward by a predetermined dimension with respect to the center portion of the lower end surface of the shoulder portion 32. The lower probe 34 is integrally provided on the same axis.

そして、このような第二回転治具26が、そのショルダ部32及び下側プローブ34の形成部位を含む下部側部分を、前記円筒状の第一回転治具24における内孔36の下端開口部から下方に突出させた状態で、かかる内孔36内に、同軸的に且つ軸方向(上下方向)に相対移動可能に挿入、配置されており、以て、第一及び第二回転治具24,26のそれぞれのショルダ部28,32におけるショルダ面27,30同士が、上下方向に所定距離を隔てて、対向して、平行に位置せしめられている。   Then, the second rotating jig 26 has a lower side portion including a portion where the shoulder portion 32 and the lower probe 34 are formed, and a lower end opening portion of the inner hole 36 in the cylindrical first rotating jig 24. The first and second rotary jigs 24 are inserted and arranged coaxially and axially (upward and downward) relative to each other in the inner hole 36 in a state of protruding downward from the inner hole 36. 26, the shoulder surfaces 27, 30 of the shoulder portions 28, 32 are opposed to each other at a predetermined distance in the vertical direction and are positioned in parallel.

また、図1には明示されてはいないものの、ここでは、第一及び第二回転治具24,26が、それぞれの上部側部位において、互いに同期せしめられた別個のモータ等に連結せしめられて、一体回転せしめられるようになっている。更に、それら各回転治具24,26の上側部位は、公知の油圧機構により突出/引込作動せしめられる別個の油圧シリンダにも、各々連結されて、それら各油圧シリンダの突出/引込作動に伴って、下方/上方に相対移動せしめられると共に、各油圧シリンダが、所定の作動位置で停止せしめられることにより、各回転治具24,26が、任意の移動位置にて、上下方向の相対移動が停止せしめられるようになっている。   Further, although not explicitly shown in FIG. 1, here, the first and second rotating jigs 24 and 26 are connected to separate motors or the like synchronized with each other at the respective upper side portions. , Can be rotated together. Furthermore, the upper part of each of the rotating jigs 24 and 26 is also connected to a separate hydraulic cylinder that is protruded / retracted by a known hydraulic mechanism, and is associated with the protrusion / retraction operation of each of the hydraulic cylinders. When the hydraulic cylinders are stopped at a predetermined operating position, the rotary jigs 24 and 26 are stopped from moving in the vertical direction at arbitrary movement positions. It is supposed to be squeezed.

これによって、第一の回転治具24のショルダ部28と第二の回転治具26のショルダ部32とが、一体回転可能で且つ上下方向に相対移動せしめられ得るようになっており、また、かかる第二の回転治具26のショルダ部32に一体形成された下側プローブ32も、第二の回転治具26のショルダ部32と共に、第一の回転治具24のショルダ部28に対して、一体回転可能で且つ上下方向に相対移動可能とされている。そして、それら各ショルダ部28,32と下側プローブ32の相対移動が、任意の移動位置で、停止せしめられて、維持されるように構成されている。   As a result, the shoulder portion 28 of the first rotating jig 24 and the shoulder portion 32 of the second rotating jig 26 can be integrally rotated and can be relatively moved in the vertical direction. The lower probe 32 formed integrally with the shoulder portion 32 of the second rotating jig 26 is also connected to the shoulder portion 28 of the first rotating jig 24 together with the shoulder portion 32 of the second rotating jig 26. , Can rotate integrally and can move relative to each other in the vertical direction. Then, the relative movement of each of the shoulder portions 28 and 32 and the lower probe 32 is configured to be stopped and maintained at an arbitrary movement position.

また、このような第二回転治具26の軸方向中間部には、当接部38と挿入部40とからなる裏当て部材42が、同軸的に且つ軸方向(上下方向)に移動可能に外挿されている。この裏当て部材42の当接部38は、その中心部に円形の貫通孔44が設けられていることによって、第一回転治具24の下端部に設けられたショルダ部28略同様な円環板形状とされており、また、その上端面が、かかるショルダ部28のショルダ面30と略同一の平坦な円環面形状を有する裏当て面46とされている。   In addition, a backing member 42 composed of the abutting portion 38 and the insertion portion 40 is coaxially movable in the axial direction (vertical direction) at the intermediate portion in the axial direction of the second rotating jig 26. Extrapolated. The contact portion 38 of the backing member 42 is provided with a circular through hole 44 at the center thereof, so that the shoulder portion 28 provided at the lower end portion of the first rotating jig 24 is substantially similar to the ring. It has a plate shape, and its upper end surface is a backing surface 46 having a flat annular surface shape substantially the same as the shoulder surface 30 of the shoulder portion 28.

一方、挿入部40は、第一回転治具24の内孔36の内径よりも僅かに小さな外径と、第二回転治具26の外径よりも僅かに大きな内径とを有する円筒形状を呈している。そして、当接部38の裏当て面42における貫通孔44の開口周縁部から、かかる貫通孔44を取り囲むような状態で、上方に向かって、一体的に延出せしめられている。即ち、ここでは、裏当て部材42が、上端面が裏当て面46とされた円環板状の当接部38と、かかる当接部38の裏当て面46上に、同軸的に一体形成された円筒状の挿入部40とからなる一体品にて、構成されているのである。   On the other hand, the insertion portion 40 has a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the inner hole 36 of the first rotating jig 24 and an inner diameter slightly larger than the outer diameter of the second rotating jig 26. ing. And it is made to extend integrally from the opening peripheral part of the through-hole 44 in the backing surface 42 of the contact part 38 in the state surrounding this through-hole 44 toward upper direction. That is, here, the backing member 42 is coaxially formed integrally on the annular plate-like contact portion 38 whose upper end surface is the backing surface 46 and the backing surface 46 of the contact portion 38. It is comprised by the integral goods which consist of the cylindrical insertion part 40 made.

そして、このような裏当て部材42が、第二回転治具26の軸方向中間部に、同軸的に且つ上下方向に相対移動可能に外挿された状態で、挿入部40において、第一回転治具24の内孔36内に、同軸的に且つ上下方向に相対移動可能に挿入位置せしめられている。そしてまた、そのような挿入状態下で、当接部38の直上に位置する挿入部40の基部側部位が、第一回転治具24から下方に所定長さだけ突出せしめられている。   Then, such a backing member 42 is inserted in the axial direction intermediate portion of the second rotating jig 26 so as to be coaxially and externally movable relative to the vertical direction. In the inner hole 36 of the jig 24, the insertion position is coaxially and relatively movable in the vertical direction. Further, under such an inserted state, the base portion side portion of the insertion portion 40 located immediately above the contact portion 38 is protruded downward from the first rotating jig 24 by a predetermined length.

これによって、ここでは、裏当て部材42の裏当て面46が、第一及び第二回転治具24,26の各ショルダ部28,32のショルダ面27,30に対して、上下方向に所定距離を隔てて、対向して、平行に位置せしめられており、また、第一回転治具24から下方に所定長さだけ突出せしめられた挿入部40の基部側部位が、プローブ手段としての上側プローブ48とされているのである。   Accordingly, here, the backing surface 46 of the backing member 42 is a predetermined distance in the vertical direction with respect to the shoulder surfaces 27 and 30 of the shoulder portions 28 and 32 of the first and second rotating jigs 24 and 26. The base side portion of the insertion portion 40 that is positioned opposite and parallel to each other and protruded downward from the first rotating jig 24 by a predetermined length is an upper probe as a probe means. 48.

なお、図1には明示されてはいないものの、このような裏当て部材42にあっても、第一及び第二回転治具24,26と同様に、挿入部40の上側部位において、第一及び第二回転治具24,26を回転駆動せしめるモータと同期せしめられたモータ等に連結されて、それら第一及び第二回転治具24,26と一体回転せしめられるようになっている。また、裏当て部材42の挿入部40の上側部位は、公知の油圧機構により突出/引込作動せしめられる油圧シリンダにも連結されて、かかる油圧シリンダの突出/引込作動に伴って、第一及び第二回転治具24,26に対して、下方/上方に相対移動せしめられると共に、この油圧シリンダが、所定の作動位置で停止せしめられることにより、裏当て部材42の第一及び第二回転治具24,26に対する上下方向の相対移動が、任意の移動位置にて、停止せしめられるようになっている。   Although not clearly shown in FIG. 1, even in such a backing member 42, the first portion and the second rotating jig 24, 26 have the first portion at the upper portion of the insertion portion 40. The second rotating jigs 24 and 26 are coupled to a motor or the like synchronized with a motor for driving the rotation of the second rotating jigs 24 and 26 so that the first and second rotating jigs 24 and 26 can be rotated together. Further, the upper portion of the insertion portion 40 of the backing member 42 is also connected to a hydraulic cylinder that is protruded / retracted by a known hydraulic mechanism, and the first and second operations are performed in accordance with the protrusion / retraction operation of the hydraulic cylinder. The first and second rotary jigs of the backing member 42 are moved relative to the two rotary jigs 24 and 26 and moved downward / upward, and the hydraulic cylinder is stopped at a predetermined operating position. The relative movement in the vertical direction with respect to 24 and 26 is stopped at an arbitrary movement position.

かくして、裏当て部材42の当接部38が、第一及び第二回転治具24のそれぞれのショルダ部28,32に対して、一体回転可能で且つ上下方向に相対移動せしめられると共に、かかる相対移動が、任意の移動位置で、停止せしめられて、維持されるように構成されている。換言すれば、裏当て部材42の当接部38が、第一及び第二回転治具24のそれぞれのショルダ部28,32と一体回転可能な状態で、それら各ショルダ部28,32に対して、接近/離隔移動可能とされ、また、それら相互の離間距離が、任意に調整し得るように構成されているのである。このことから明らかなように、本実施形態では、油圧機構と油圧シリンダとにて、相対回転阻止機構と接近阻止機構とが、構成されている。   Thus, the abutting portion 38 of the backing member 42 can rotate integrally with the shoulder portions 28 and 32 of the first and second rotating jigs 24 and can be moved relative to each other in the vertical direction. The movement is configured to be stopped and maintained at an arbitrary movement position. In other words, the abutting portion 38 of the backing member 42 is capable of rotating integrally with the shoulder portions 28 and 32 of the first and second rotating jigs 24, and with respect to each of the shoulder portions 28 and 32. It is possible to move close to and away from each other, and the distance between them can be arbitrarily adjusted. As is clear from this, in this embodiment, the relative rotation prevention mechanism and the approach prevention mechanism are configured by the hydraulic mechanism and the hydraulic cylinder.

而して、二つの中空形材10a,10b間に、上側及び下側突合せ部18,20が形成されるように、それら二つの中空形材10a,10を突き合わせて、拘束する、前述の如き操作に引き続いて、上記の如き構造の摩擦撹拌接合装置22を用いて、二つの中空形材10a,10b間に形成された上側及び下側突合せ部18,20を摩擦撹拌接合する際には、例えば、以下のようにして、その作業が進められることとなる。
And Thus, the two hollow shape members 10a, between 10b, such that the upper and lower abutting portions 18, 20 are formed, together can they butt the two hollow shape members 10a, 10, constrain, above Subsequently to the above operation, the friction stir welding apparatus 22 having the above-described structure is used to friction stir weld the upper and lower abutting portions 18 and 20 formed between the two hollow members 10a and 10b. For example, the operation is performed as follows.

すなわち、先ず、第一回転治具24が所定の位置にて移動不能とされた状態で、第二回転治具26が、第一回転治具24に対して接近/離隔移動(相対移動)せしめられて、第一回転治具24のショルダ面27と、第二回転治具26のショルダ面30との間の距離が、上面板12の上面と下面板14の上面との間の距離、つまり、上側突合せ部18の上面と下側突合せ部20の上面との間の距離と同一とされる。そして、その位置で、第二回転治具26が、移動不能とされる。   That is, first, in a state where the first rotating jig 24 is immovable at a predetermined position, the second rotating jig 26 moves toward / separates (relatively moves) from the first rotating jig 24. Thus, the distance between the shoulder surface 27 of the first rotating jig 24 and the shoulder surface 30 of the second rotating jig 26 is the distance between the upper surface of the upper surface plate 12 and the upper surface of the lower surface plate 14, that is, The distance between the upper surface of the upper butt portion 18 and the upper surface of the lower butt portion 20 is the same. And the 2nd rotation jig 26 is made immovable in the position.

その後、裏当て部材42が、第二回転治具26に対して、軸方向に相対移動せしめられることにより、裏当て部材42の当接部38と第二の回転治具のショルダ部32とが、相互に接近/離隔移動せしめられて、裏当て部材42の裏当て面46と第二回転治具26のショルダ面30との間の距離が、上面板12の下面と下面板14の上面との間の距離、つまり、上側突合せ部18の下面と下側突合せ部20の上面との間の距離と同一とされる。そして、その位置で、裏当て部材42が、移動不能とされる。このとき、第一回転治具24のショルダ面27と裏当て部材42の裏当て面46との間の距離が、自動的に、上側突合せ部18(上面板12)の厚さと同一とされる。   Thereafter, the backing member 42 is moved relative to the second rotating jig 26 in the axial direction, so that the contact portion 38 of the backing member 42 and the shoulder portion 32 of the second rotating jig are brought into contact with each other. The distance between the backing surface 46 of the backing member 42 and the shoulder surface 30 of the second rotating jig 26 is moved between the lower surface of the upper surface plate 12 and the upper surface of the lower surface plate 14. , I.e., the distance between the lower surface of the upper butting portion 18 and the upper surface of the lower butting portion 20. At that position, the backing member 42 is immovable. At this time, the distance between the shoulder surface 27 of the first rotating jig 24 and the backing surface 46 of the backing member 42 is automatically made equal to the thickness of the upper butt portion 18 (upper surface plate 12). .

なお、このような第一回転治具24の位置を基準とした第二回転治具26と裏当て部材42の第一回転治具24に対する位置合せ操作は、上記の順番とは逆に、ショルダ面27と裏当て面46との間の距離が上側突合せ部18の厚さと同一となるように、裏当て部材42の位置合せを行った後、裏当て面46とショルダ面30との間の距離が、上側突合せ部18の下面と下側突合せ部20の上面との間の距離と同一となるように、第二回転治具26の位置合せを行うようにしても、何等差し支えない。また、第一回転治具24の位置を基準とする代わりに、第二回転治具26の位置を基準として、第一回転治具24や裏当て部材42の位置合せを行ったり、或いは裏当て部材42の位置を基準として、第一及び第二回転治具24,26の位置合せを行うことも、勿論可能である。   The positioning operation of the second rotating jig 26 and the backing member 42 with respect to the first rotating jig 24 based on the position of the first rotating jig 24 is performed in the opposite manner to the above-described order. After aligning the backing member 42 so that the distance between the surface 27 and the backing surface 46 is the same as the thickness of the upper butt 18, the distance between the backing surface 46 and the shoulder surface 30 is set. There is no problem even if the second rotating jig 26 is aligned so that the distance is the same as the distance between the lower surface of the upper butting portion 18 and the upper surface of the lower butting portion 20. Further, instead of using the position of the first rotating jig 24 as a reference, the first rotating jig 24 and the backing member 42 are aligned or backed up using the position of the second rotating jig 26 as a reference. It is of course possible to align the first and second rotating jigs 24 and 26 with the position of the member 42 as a reference.

次いで、第一及び第二回転治具24,26と裏当て部材42とが一体回転せしめられ、そして、その後に、或いはその前に、裏当て部材42における挿入部40の基部側部位からなる上側プローブ48と、第二回転治具24のショルダ部32から下方に突出せしめられてなる下側プローブ34とが、上側突合せ部18と下側突合せ部20とに対して、それぞれ貫通するように位置せしめられるのであるが、これは、例えば、以下の如き二つの配置方法のうちの何れかによって、実施される。   Next, the first and second rotating jigs 24 and 26 and the backing member 42 are integrally rotated, and thereafter, or before, the upper side consisting of the base side portion of the insertion portion 40 in the backing member 42. The probe 48 and the lower probe 34 projected downward from the shoulder portion 32 of the second rotating jig 24 are positioned so as to penetrate the upper butting portion 18 and the lower butting portion 20, respectively. This can be done, for example, by one of the following two placement methods.

すなわち、それら二つの方法のうちの第一の配置方法を実施する場合にあっては、第一及び第二回転治具24,26と裏当て部材42とが一体回転せしめられた状態下で、上側プローブ48と下側プローブ34のそれぞれの側面が、上側突合せ部18と下側突合せ部20のそれぞれの接合開始側の端面に各々当接せしめられて、上側及び下側プローブ48,34が、上側及び下側突合せ部18,20に沿って、その接合終了側に向かって押圧される。これにより、上側プローブ48と下側プローブ34とが、上側突合せ部18と下側突合せ部20の各接合開始側端部にそれぞれ入り込まされて、それら上側及び下側突合せ部18,20内に、それらを貫通するように、それぞれ位置せしめられることとなる。   That is, when the first arrangement method of the two methods is performed, the first and second rotating jigs 24 and 26 and the backing member 42 are integrally rotated, The side surfaces of the upper probe 48 and the lower probe 34 are brought into contact with the end surfaces of the upper butting portion 18 and the lower butting portion 20 on the joining start side, respectively, and the upper and lower probes 48 and 34 are It is pressed along the upper and lower abutting portions 18 and 20 toward the joining end side. Thereby, the upper probe 48 and the lower probe 34 are respectively inserted into the respective joining start side end portions of the upper butting portion 18 and the lower butting portion 20, and in the upper and lower butting portions 18 and 20, Each of them will be positioned so as to penetrate them.

また、第二の配置方法を実施する際には、図2に示されるように、先ず、上側突合せ部18と下側突合せ部20のそれぞれの接合開始側の端部における上下方向の対応部位に、予め、上側プローブ48と下側プローブ34とが各々挿通可能な挿通孔50が、それぞれ穿設される(図2では、上側突合せ部18に穿設される挿通孔50のみを示す)。この上側突合せ部18に穿設される挿通孔50は、二つの中空形材10a,10bの各上面板12の突合せ状態を解消したときに、図2に二点鎖線で示されるように、それら各上面板12の幅方向端部に対して、半円状の切欠として、形成されるものであり、また、下側突合せ部20に穿設される挿通孔も、それと同様な形態とされるものである。   When performing the second arrangement method, as shown in FIG. 2, first, the upper and lower abutting portions 18 and the lower abutting portions 20 at the corresponding portions in the vertical direction at the end of the joining start side. The insertion holes 50 through which the upper probe 48 and the lower probe 34 can be inserted are respectively drilled in advance (only the insertion hole 50 drilled in the upper butt portion 18 is shown in FIG. 2). The insertion holes 50 formed in the upper abutting portion 18 are formed as shown by a two-dot chain line in FIG. 2 when the abutting state of the upper surface plates 12 of the two hollow shapes 10a and 10b is eliminated. It is formed as a semicircular notch with respect to the width direction end of each upper surface plate 12, and the insertion hole formed in the lower abutting portion 20 has the same form. Is.

そして、上側及び下側突合せ部18,20に挿通孔50がそれぞれ形成されたら、一旦、二つの中空形材10a,10bの突合せ状態が解消される(図2に二点鎖線で示される状態とされる)。その後、第一及び第二回転治具24,26と裏当て部材42との一体回転が停止せしめられた状態下で、対応する各面板12,14の端面同士の間に、上側プローブ48と下側プローブ34とがそれれ位置せしめられると共に、上面板12と下面板14との対向面間に、裏当て部材42の当接部38と第二回転治具26のショルダ部32が、それぞれ対向して位置せしめられた後、再び、二つ中空形材10a,10bが、上側及び下側突合せ部18,20が形成されるように、再び突き合わされる。これによって、上側プローブ48と下側プローブ34とが、上側突合せ部位18と下側突合せ部位20とにそれぞれ設けられた挿通孔50内に挿通された状態とされ、以て、それら上側プローブ48と下側プローブ34とが、上側及び下側突合せ部18,20内に、それらを貫通するように、それぞれ位置せしめられることとなる。なお、この場合には、例えば、二つの中空形材10a,10bの再度の突合せ操作の後、第一及び第二回転治具24,26と裏当て部材42とが一体回転せしめられるようになる。
Then, once the insertion holes 50 are formed in the upper and lower butting portions 18 and 20, the butted state of the two hollow shapes 10a and 10b is once canceled (the state shown by the two-dot chain line in FIG. 2). ) Thereafter, the upper probe 48 and the lower probe 48 are placed between the end faces of the corresponding face plates 12 and 14 under the state where the integral rotation of the first and second rotating jigs 24 and 26 and the backing member 42 is stopped. with a side probe 34 is brought into, respectively it position, between the facing surfaces of the upper plate 12 and lower plate 14, the shoulder portion 32 of the contact portion 38 of the backing member 42 and the second rotary jig 26, respectively After being positioned facing each other, the two hollow profiles 10a and 10b are again abutted so that the upper and lower abutting portions 18 and 20 are formed. As a result, the upper probe 48 and the lower probe 34 are inserted into the insertion holes 50 provided in the upper butting portion 18 and the lower butting portion 20, respectively. The lower probe 34 is positioned in the upper and lower abutting portions 18 and 20 so as to pass through them. In this case, for example, the first and second rotating jigs 24 and 26 and the backing member 42 are integrally rotated after the butting operation of the two hollow members 10a and 10b again. .

また、このとき、前述せる如く、裏当て部材42の裏当て面46と第二回転治具26ののショルダ面30との間の距離が、上面板12と下面板14との対向面間の距離、換言すれば、上側突合せ部18と下側突合せ部20との間の距離と同一とされると共に、第一回転治具24のショルダ面27と裏当て部材42の裏当て面46との間の距離が、上面板12の厚さと同一とされている。   At this time, as described above, the distance between the backing surface 46 of the backing member 42 and the shoulder surface 30 of the second rotating jig 26 is between the opposing surfaces of the upper surface plate 12 and the lower surface plate 14. The distance, in other words, the distance between the upper abutting portion 18 and the lower abutting portion 20 is the same as the distance between the shoulder surface 27 of the first rotating jig 24 and the backing surface 46 of the backing member 42. The distance between them is the same as the thickness of the upper surface plate 12.

従って、上述の如き第一及び第二の配置方法の何れか方法、或いはそれら以外の別の方法により、上側及び下側プローブ48,34が上側及び下側突合せ部18,20を貫通するように位置せしめられた状態下で、第一回転治具24と第二回転治具26と裏当て部材42とが一体回転せしめられることにより、第一回転治具24のショルダ面27と裏当て部材42の裏当て面46とが、一体回転せしめられつつ、上側突合せ部18の上面と下面とに接触せしめられる一方、第二回転治具26のショルダ面30が、第一回転治具24と裏当て部材42と共に一体回転せしめられつつ、下側突合せ部20の上面に接触せしめられるのである。なお、このとき、必要に応じて、各下面板14の下側突合せ部20形成部位の下面に対して、公知の裏当て部材が接触位置せしめられることとなる。   Therefore, the upper and lower probes 48 and 34 may pass through the upper and lower abutting portions 18 and 20 by any one of the first and second arrangement methods as described above, or other methods. Under the positioned state, the first rotating jig 24, the second rotating jig 26, and the backing member 42 are integrally rotated, whereby the shoulder surface 27 and the backing member 42 of the first rotating jig 24 are rotated. The back surface 46 of the second rotating jig 26 is brought into contact with the upper surface and the lower surface of the upper abutting portion 18 while being rotated integrally, while the shoulder surface 30 of the second rotating jig 26 is backed with the first rotating jig 24. It is brought into contact with the upper surface of the lower butt 20 while being rotated together with the member 42. At this time, a known backing member is brought into contact with the lower surface of the lower abutting portion 20 forming portion of each lower surface plate 14 as necessary.

そして、このような状態から、第一回転治具24と第二回転治具26と裏当て部材42とが、上側突合せ部18と下側突合せ部20に対して、それらに沿って相対的に一体移動させられることによって、上側突合せ部18と下側突合せ部20とが同時に摩擦撹拌接合され、以て、目的とする広幅パネルが製造されることとなるのである。   From such a state, the first rotating jig 24, the second rotating jig 26, and the backing member 42 are relatively moved along the upper butting section 18 and the lower butting section 20. By being moved integrally, the upper butt portion 18 and the lower butt portion 20 are simultaneously friction stir welded, so that the intended wide panel is manufactured.

このように、本実施形態では、上側突合せ部18と下側突合せ部20とが同時に且つ一挙に摩擦撹拌接合されるようになっているところから、二つの中空形材10a,10bの接合作業、つまり目的とする広幅パネルの製造作業の簡略化と作業時間の短縮化とが、有利に図られ得ると共に、接合後における中空形材10a,10bの各面板12,14の撓みの発生が効果的に回避され得て、二つの製造された広幅パネルにおける歪みの発生が有利に解消乃至は抑制され得ることとなる。   Thus, in this embodiment, since the upper abutting portion 18 and the lower abutting portion 20 are joined at the same time by friction stir welding, the joining operation of the two hollow members 10a and 10b, That is, simplification of the manufacturing operation of the intended wide panel and shortening of the working time can be advantageously achieved, and the occurrence of bending of the face plates 12 and 14 of the hollow shape members 10a and 10b after joining is effective. The occurrence of distortion in the two manufactured wide panels can be advantageously eliminated or suppressed.

また、このような本実施形態においては、第一回転治具24のショルダ面27と裏当て部材42の裏当て面46とが、回転状態下で、上側突合せ部18の上面と下面とにそれぞれ接触せしめられるようになっているところから、それらの接触面同士の間で生ずる摩擦熱により、上側突合せ部18全体が十分に可塑化されて、上側突合せ部18全体のメタルが、より十分に撹拌され得る。   Further, in this embodiment, the shoulder surface 27 of the first rotating jig 24 and the backing surface 46 of the backing member 42 are respectively on the upper surface and the lower surface of the upper butt portion 18 in a rotating state. Since the frictional heat generated between the contact surfaces is sufficiently plasticized, the entire upper butt portion 18 is sufficiently plasticized, and the metal of the entire upper butt portion 18 is more sufficiently stirred. Can be done.

従って、かかる本実施形態によれば、目的とする広幅パネルが、歪みの少ない健全な構造と十分な接合強度とをもって、容易に且つ効率的に得られることとなる。   Therefore, according to this embodiment, the intended wide panel can be obtained easily and efficiently with a sound structure with little distortion and sufficient bonding strength.

そして、特に、本実施形態手法においては、裏当て部材42の当接部38の裏当て面46と第二回転治具26のショルダ部32のショルダ面30との間の距離が、それらが接触せしめられる上側突合せ部18の下面と下側突合せ部20の上面との間の距離と同一となるように、裏当て部材42と第二回転治具26とが相互に接近若しくは離隔移動せしめられるようになっているため、例えば、二つの中空形材10a,10bを摩擦撹拌接合して、一種類の広幅パネルを形成した後、接合に供される中空形材10a,10bの上面板12と下面板14との間の距離が、かかる一種類の広幅パネルとは異なる別の種類の広幅パネルを得る際に、単に、裏当て部材42の当接部38と第二回転治具26のショルダ部32とを相互に接近若しくは離隔移動せしめて、裏当て面46とショルダ面30との間の距離を調節すれば、先の広幅パネルの製造に使用された摩擦撹拌接合装置22を流用することが出来る。   In particular, in the method of the present embodiment, the distance between the backing surface 46 of the abutting portion 38 of the backing member 42 and the shoulder surface 30 of the shoulder portion 32 of the second rotating jig 26 is such that they are in contact with each other. The backing member 42 and the second rotating jig 26 are moved toward or away from each other so that the distance between the lower surface of the upper butted portion 18 and the upper surface of the lower butting portion 20 is the same. Therefore, for example, after two hollow profiles 10a and 10b are friction stir welded to form one type of wide panel, the top plate 12 and the bottom plate 12 of the hollow profiles 10a and 10b to be joined are joined. When obtaining another type of wide panel different in distance from the face plate 14 from the one type of wide panel, the abutting portion 38 of the backing member 42 and the shoulder portion of the second rotating jig 26 are simply used. 32 and approach each other And it allowed dynamic, by adjusting the distance between the backing surface 46 and the shoulder surface 30 can be diverted friction stir welding apparatus 22 which is used in the production of the previous wide panel.

従って、このような本実施形態によれば、接合に供される中空形材10a,10bの上面板12と下面板14との間の距離がそれぞれ異なる複数種類の広幅パネルを得る際に、それぞれの種類の広幅パネル専用の摩擦撹拌接合装置を準備する必要が有利に解消され得、その結果として、かかる複数種類の広幅パネルの製造コストが、飛躍的に低減せしめられ得ることとなるのである。   Therefore, according to the present embodiment, when obtaining a plurality of types of wide panels having different distances between the upper surface plate 12 and the lower surface plate 14 of the hollow shape members 10a and 10b to be joined, respectively. The necessity of preparing a friction stir welding apparatus dedicated to the wide panel of this type can be advantageously eliminated, and as a result, the manufacturing cost of such multiple types of wide panels can be drastically reduced.

次に、図3及び図4には、図1に示された前記実施形態とは、裏当て部材の配設構造が異なる摩擦撹拌接合装置が示されている。なお、かかる図3及び図4に示された形態、及び後述する図5乃至図8に示された各形態に関しては、図1に示された実施形態と同様な構造とされた部材及び部位について、図3乃至図8中に、図1と同一の符号を付すことにより、その詳細な説明が省略されていることが、理解されるべきである。
Next, FIG. 3 and FIG. 4, the above embodiment shown in FIG. 1, arrangement structure of the backing member is shown different FSW equipment. Regarding such 3 and form state shown in FIG. 4, and later figures 5 to each form state shown in FIG. 8, are members, and a similar structure to the embodiment shown in FIG. 1 It should be understood that the detailed description of the portions is omitted by giving the same reference numerals as those in FIG. 1 in FIGS.

すなわち、図3から明らかなように、そこで用いられる摩擦撹拌装置52にあっては、裏当て部材54が、前記第一の実施形態における裏当て部材42から挿入部40が除去されてなる如き円環板状の全体形状を有している。そして、軸方向中間部位が上側プローブ55とされた第二回転治具26の該上側プローブ55の直下の部位に対して、裏当て部材54が、貫通孔44において、第二回転治具26のショルダ部32に対向する状態で、外挿配置されている。
That is, as is clear from FIG. 3, in the friction stir apparatus 52 used therein, such as backing member 54, the insertion portion 40 is removed from the backing member 42 in the first embodiment It has an overall shape of an annular plate. The backing member 54 is connected to the portion of the second rotating jig 26 in the through hole 44 with respect to the portion immediately below the upper probe 55 of the second rotating jig 26 whose axial intermediate portion is the upper probe 55. An extrapolated arrangement is provided in a state of facing the shoulder portion 32.

また、図4に示されるように、かかる裏当て部材54の貫通孔44の内周面には、断面V字状を呈する、溝部としてのV溝56の複数が、周方向に隣り合って全周に位置し、且つ軸方向に連続して延びるように、形成されている。一方、第二回転治具26の軸方向中間部の外周面には、裏当て部材54のV溝56に対応した断面V字形状を呈する、突部としての突条58の複数が、周方向に隣り合って全周に位置し、且つ第二回転治具26の軸方向に所定長さをもって、一体的に形成されている。そして、そのような複数の突条58が設けられた第二回転治具26の軸方向中間部に対して、裏当て部材54が、各V溝56内に、第二回転治具26の突条58をそれぞれ突入せしめた状態で、外挿されている。   In addition, as shown in FIG. 4, the inner peripheral surface of the through-hole 44 of the backing member 54 has a plurality of V grooves 56 that are V-shaped in cross section and are adjacent to each other in the circumferential direction. It is formed so as to be located in the periphery and continuously extend in the axial direction. On the other hand, on the outer peripheral surface of the axially intermediate portion of the second rotating jig 26, a plurality of protrusions 58 serving as protrusions having a V-shaped cross section corresponding to the V groove 56 of the backing member 54 are provided in the circumferential direction. Are integrally formed with a predetermined length in the axial direction of the second rotating jig 26. Then, the backing member 54 protrudes into the V-groove 56 with respect to the axially intermediate portion of the second rotating jig 26 provided with such a plurality of protrusions 58. It is extrapolated in a state in which each of the strips 58 is inserted.

かくして、ここでは、裏当て部材54の各V溝56と、それに突入せしめられる第二回転治具26の突条58とが、それぞれの側面同士において係合せしめられることにより、裏当て部材54の第二回転治具26に対する相対回転が阻止せしめられて、裏当て部材54が、第二回転治具26の回転と共に一体回転せしめられるようになっており、また、それら第二回転治具26と突条58とが、それぞれの側面同士において摺動せしめられることにより、裏当て部材54が、第二回転治具26に対して、軸方向に相対移動可能とされているのである。このことから明らかなように、ここでは、複数のV溝56と複数の突条58とにて、相対回転阻止機構が、構成されている。なお、この相対回転阻止機構を構成する溝部や突部の形状や配設数は、例示のものに、何等限定されるものではない。   Thus, here, the V-grooves 56 of the backing member 54 and the protrusions 58 of the second rotating jig 26 inserted into the V-grooves are engaged with each other on the respective side surfaces, so that the backing member 54 The relative rotation with respect to the second rotation jig 26 is prevented, and the backing member 54 is integrally rotated together with the rotation of the second rotation jig 26. When the protrusion 58 is slid between the side surfaces, the backing member 54 can be moved relative to the second rotating jig 26 in the axial direction. As is clear from this, here, a plurality of V grooves 56 and a plurality of protrusions 58 constitute a relative rotation blocking mechanism. In addition, the shape of the groove part and protrusion which comprise this relative rotation prevention mechanism, and the number of arrangement | positioning are not limited at all to an illustration.

また、本形態においては、特に、上述の如き裏当て部材54の第二回転治具26への外挿状態下で、裏当て部材54と、第二回転治具26の下端側部位に一体形成されたショルダ部32との間に、付勢手段としての圧縮コイルばね60が、予圧縮された状態で、介装されており、これによって、裏当て部材54が、圧縮コイルばね60の付勢力に基づいて、第二回転治具26のショルダ部32から離隔する方向に付勢せしめられている。なお、第二回転治具26のショルダ部32と裏当て部材54との間における圧縮コイルばね60の配設位置や配設個数は、例示のものに、何等限定されるものではなく、また、そのような圧縮コイルばね60に代えて、公知の付勢手段を用いても良い。
Further, in the present form state, in particular, under extrapolation state to the second rotary jig 26 in such backing member 54 described above, the backing member 54, integrally with the lower end portion of the second rotating jig 26 A compression coil spring 60 as an urging means is interposed between the formed shoulder portion 32 in a pre-compressed state, whereby the backing member 54 is attached to the compression coil spring 60. Based on the force, the second rotating jig 26 is biased in a direction away from the shoulder portion 32. In addition, the arrangement position and the number of arrangement of the compression coil springs 60 between the shoulder portion 32 and the backing member 54 of the second rotating jig 26 are not limited to the examples, and Instead of such a compression coil spring 60, a known urging means may be used.

而して、このような構造を有する摩擦撹拌接合装置52を用いて、互いに突き合わされた二つの中空形材10a,10bの上側及び下側突合せ部18,20を摩擦撹拌接合する際には、先ず、圧縮コイルばね60の付勢力に抗して、裏当て部材54が下方に押圧されることにより、裏当て部材54が第二回転治具26のショルダ部32に接近せしめられた状態で、前記第一の実施形態と同様な手法、好ましくは前記第二の配置方法により、第二回転治具26の上側プローブ55と下側プローブ34とが、上側突合せ部18と下側突合せ部20とに対して、それらを貫通するように位置せしめられる。また、このとき、第一回転治具24のショルダ面27と第二回転治具26のショルダ面30とが、上側突合せ部18の上面と下側突合せ部20の下面とに接触せしめられる。   Thus, when the friction stir welding apparatus 52 having such a structure is used to frictionally stir the upper and lower butted portions 18 and 20 of the two hollow shape members 10a and 10b butted against each other, First, the backing member 54 is pressed downward against the urging force of the compression coil spring 60, so that the backing member 54 is brought close to the shoulder portion 32 of the second rotating jig 26. The upper probe 55 and the lower probe 34 of the second rotating jig 26 are connected to the upper butting portion 18 and the lower butting portion 20 by the same method as in the first embodiment, preferably the second arrangement method. Are positioned so as to penetrate them. At this time, the shoulder surface 27 of the first rotating jig 24 and the shoulder surface 30 of the second rotating jig 26 are brought into contact with the upper surface of the upper butting portion 18 and the lower surface of the lower butting portion 20.

その後、図3に示されるように、裏当て部材54に対する下方への押圧力が解消されると、上側突合せ部18の下面と下側突合せ部20の上面との間の距離に拘わらず、裏当て部材54の裏当て面46が、上側突合せ部18の下面に対して、押圧状態で接触せしめられ、それによって、第二回転治具26のショルダ部32への裏当て部材54の接近移動が、圧縮コイルばね60の付勢力に基づいて、阻止される。このことから明らかなように、ここでは、圧縮コイルばね60によって、接近阻止機構が、構成されている。   Thereafter, as shown in FIG. 3, when the downward pressing force against the backing member 54 is eliminated, the back surface is not affected regardless of the distance between the lower surface of the upper butting portion 18 and the upper surface of the lower butting portion 20. The backing surface 46 of the abutting member 54 is brought into contact with the lower surface of the upper abutting portion 18 in a pressed state, whereby the approaching movement of the backing member 54 to the shoulder portion 32 of the second rotating jig 26 is performed. Based on the urging force of the compression coil spring 60, it is blocked. As is clear from this, an approach prevention mechanism is constituted by the compression coil spring 60 here.

そして、その後、第一回転治具24と第二回転治具26と裏当て部材54とが一体回転せしめられて、第一及び第二回転治具24,26の各ショルダ面27,30と裏当て部材54の裏当て面46とが、回転下で、上側及び下側突合せ部18,20に接触せしめられつつ、それら上側及び下側突合せ部18,20を貫通するように位置せしめられた第二回転治具26の上側及び下側プローブ34,55が、各突合せ部18,20に対して相対移動せしめられることにより、それら上側突合せ部18と下側突合せ部20とが同時に摩擦撹拌接合され、以て、目的とする広幅パネルが得られることとなる。   After that, the first rotating jig 24, the second rotating jig 26, and the backing member 54 are integrally rotated, and the shoulder surfaces 27, 30 and the back surfaces of the first and second rotating jigs 24, 26 are rotated. The back surface 46 of the abutting member 54 is positioned so as to pass through the upper and lower abutting portions 18 and 20 while being brought into contact with the upper and lower abutting portions 18 and 20 under rotation. The upper and lower probes 34 and 55 of the two-turn jig 26 are moved relative to the butting portions 18 and 20, so that the upper butting portion 18 and the lower butting portion 20 are simultaneously friction stir welded. Thus, the intended wide panel is obtained.

このように、本形態にあっても、上側突合せ部18と下側突合せ部20とが同時に摩擦撹拌接合されるようになっており、また、上側突合せ部18の下面と下側突合せ部20の上面との間の距離に応じて、裏当て部材54の裏当て面46と第二回転治具26のショルダ面30との間の距離が調節されるようになっているところから、前記実施形態において奏される作用・効果、即ち、接合に供される中空形材10a,10bの上面板12と下面板14との間の距離がそれぞれ異なる複数種類の広幅パネルを、十分な接合強度をもって、容易に且つ低コストに得ることが出来るのである。
Thus, even in the present form state, the upper butt portion 18 and the lower butt portion 20 are adapted to be friction stir welding at the same time, also, the lower surface and the lower abutment of the upper abutting portion 18 20 Since the distance between the backing surface 46 of the backing member 54 and the shoulder surface 30 of the second rotating jig 26 is adjusted in accordance with the distance between the upper surface and the upper surface, the above-described implementation is performed. A plurality of types of wide panels having different distances between the upper surface plate 12 and the lower surface plate 14 of the hollow shape members 10a and 10b provided for bonding, having sufficient bonding strength It can be obtained easily and at low cost.

そして、ここでは、特に、裏当て部材54の内周面に設けられた複数のV溝56と、第二回転治具26の外周面に設けられた複数の突条58との凹凸嵌合によって、裏当て部材54が、第二回転治具26と共に一体回転せしめられるようになっており、また、裏当て部材54の裏当て面46と第二回転治具26のショルダ面30の上側及び下側突合せ部18,20への接触状態下で、裏当て部材54が第二回転治具26に向かって接近移動せしめられることが、裏当て部材54と第二回転治具26との間に介在せしめられた圧縮コイルばね60の付勢力によって阻止されるようになっている。   And here, in particular, by the uneven fitting of the plurality of V grooves 56 provided on the inner peripheral surface of the backing member 54 and the plurality of protrusions 58 provided on the outer peripheral surface of the second rotating jig 26. The backing member 54 can be rotated together with the second rotating jig 26, and the upper and lower sides of the backing surface 46 of the backing member 54 and the shoulder surface 30 of the second rotating jig 26. It is interposed between the backing member 54 and the second rotating jig 26 that the backing member 54 is moved closer to the second rotating jig 26 under the contact state with the side abutting portions 18 and 20. It is prevented by the biasing force of the compressed compression spring 60.

これによって、本形態においては、裏当て部材54を、第一回転治具24や第二回転治具26と一体回転させるためのモータが省かれ得ると共に、摩擦撹拌接合操作の実施中における裏当て部材54の第二回転治具26への接近移動を阻止して、裏当て面46の上側突合せ部18に対する接触状態を維持させるための油圧シリンダや油圧機構等も省略され得、その結果として、摩擦撹拌接合装置52の設置費や摩擦撹拌接合操作における作業コストの低下が、有利に図られ得るのである。
Thus, in this form state, the backing member 54, together with the motor for rotating integrally with the first rotating jig 24 and the second rotary jig 26 may be omitted, back during the practice of the friction stir welding operation A hydraulic cylinder, a hydraulic mechanism, or the like for preventing the contact member 54 from moving closer to the second rotating jig 26 and maintaining the contact state of the backing surface 46 with respect to the upper abutting portion 18 can be omitted. Therefore, the installation cost of the friction stir welding apparatus 52 and the work cost in the friction stir welding operation can be advantageously reduced.

また、図5に示される摩擦撹拌接合装置62にあっては、第一回転治具24と同様な、全体として、略円筒形状を呈し、その下端部に外フランジ形態を呈する円環板状のショルダ部32を有する第二回転治具64が、裏当て部材42に対して、同軸的に且つ軸方向に相対移動可能に挿通配置されており、更に、この第二回転治具64に対して、プローブ手段としての円柱状の回転ロッド66が、同軸的に且つ軸方向に相対移動可能に挿通配置されている。そして、ここでは、回転ロッド66の下端部が、第二回転治具64のショルダ部32のショルダ面30から、所定長さだけ突出位置せしめられて、この回転ロッド66の下端部が、下側プローブ68とされている。   Further, in the friction stir welding apparatus 62 shown in FIG. 5, similar to the first rotating jig 24, as a whole, the friction stir welding apparatus 62 has a substantially cylindrical shape, and an annular plate shape having an outer flange shape at the lower end thereof. A second rotating jig 64 having a shoulder portion 32 is inserted and arranged coaxially with respect to the backing member 42 so as to be relatively movable in the axial direction. A cylindrical rotary rod 66 as a probe means is coaxially inserted and arranged so as to be relatively movable in the axial direction. Here, the lower end portion of the rotating rod 66 is positioned so as to protrude from the shoulder surface 30 of the shoulder portion 32 of the second rotating jig 64 by a predetermined length, and the lower end portion of the rotating rod 66 is the lower side. The probe 68 is used.

そして、図5には明示されてはいないものの、それら第二回転治具64と回転ロッド66とが、それぞれの上側部位において、第一回転治具24や裏当て部材42が連結されるものと同様な構造のモータと油圧機構により作動せしめられる油圧シリンダとに、それぞれ連結されており、以て、第一及び第二回転治具24,64と裏当て部材42と回転ロッド66とが、互いに一体回転可能で且つ相対移動可能とされ、更には任意の移動位置で、相対移動が停止、維持され得るようになっている。即ち、ここでは、油圧シリンダと油圧機構とにより、相対回転阻止機構と接近阻止機構、更には相対移動阻止機構とが、それぞれ構成されている。   And although not explicitly shown in FIG. 5, the second rotating jig 64 and the rotating rod 66 are connected to the first rotating jig 24 and the backing member 42 at their upper portions. The first and second rotating jigs 24 and 64, the backing member 42, and the rotating rod 66 are connected to each other by a motor having a similar structure and a hydraulic cylinder operated by a hydraulic mechanism. They can rotate together and can move relative to each other, and the relative movement can be stopped and maintained at an arbitrary moving position. That is, here, the hydraulic cylinder and the hydraulic mechanism constitute a relative rotation blocking mechanism, an approach blocking mechanism, and a relative movement blocking mechanism, respectively.

かくして、本実施形態においては、第一回転治具24と第二回転治具64と裏当て部材42とが、互いに独立して、軸方向に相対移動せしめられるように構成されており、それによって、裏当て部材42の裏当て面46と第二回転治具64のショルダ面30との間の距離が、任意に変化せしめられ得るようになっていると共に、第二回転治具64のショルダ面30からの回転ロッド66の突出長さ、つまり、下側プローブ68の長さが、自由に調節され得るようになっているのである。   Thus, in the present embodiment, the first rotating jig 24, the second rotating jig 64, and the backing member 42 are configured to be relatively moved in the axial direction independently of each other, thereby The distance between the backing surface 46 of the backing member 42 and the shoulder surface 30 of the second rotating jig 64 can be arbitrarily changed, and the shoulder surface of the second rotating jig 64 can be changed. The protruding length of the rotating rod 66 from 30, that is, the length of the lower probe 68 can be freely adjusted.

それ故、このような本実施形態においては、裏当て部材42と第二回転治具64との相対移動により、それらを相互に接近/離隔せしめることが出来、それによって、前記第一及び第二の実施形態と同様に、接合に供される中空形材10a,10bの上面板12と下面板14との間の距離がそれぞれ異なる複数種類の広幅パネルを、十分な接合強度をもって、容易に且つ低コストに得ることが出来るのである。   Therefore, in the present embodiment, the backing member 42 and the second rotating jig 64 can be moved toward and away from each other by the relative movement of the backing member 42 and the second rotating jig 64. As in the embodiment, a plurality of types of wide panels having different distances between the upper surface plate 12 and the lower surface plate 14 of the hollow shape members 10a and 10b to be joined can be easily and sufficiently bonded with sufficient strength. It can be obtained at low cost.

そして、特に、本実施形態にあっては、下側プローブ68の長さが自由に調節され得るようになっているところから、例えば、接合に供される中空形材10a,10bの上面板12と下面板14のうち、特に下面板14の厚さがそれぞれ異なる複数種類の広幅パネルを得る際にあっても、下面板14の厚さの変化に伴う下側突合せ部20の厚さに応じて、下側突合せ部20への下側プローブ68の貫通部位の長さを適切に変化させることが出来る。そして、それによって、下側突合せ部20全体のメタルを十分に撹拌せしめることが可能となって、かかる下側突合せ部20を、より確実に接合することが出来る。   In particular, in the present embodiment, since the length of the lower probe 68 can be freely adjusted, for example, the top plate 12 of the hollow members 10a and 10b used for joining. Even when a plurality of types of wide panels having different thicknesses of the lower surface plate 14 are obtained, depending on the thickness of the lower abutting portion 20 accompanying the change in the thickness of the lower surface plate 14. Thus, the length of the penetrating portion of the lower probe 68 to the lower butting portion 20 can be appropriately changed. And it becomes possible to fully stir the metal of the whole lower butt | matching part 20 by this, and this lower butt | matching part 20 can be joined more reliably.

また、上面板12の厚さ、つまり上側突合せ部18の厚さが変化せしめられる場合には、第一回転治具24のショルダ部28と裏当て部材42の当接部38とを接近若しくは離隔移動させることにより、上側プローブ48の長さを任意に且つ容易に変化させることが出来る。   Further, when the thickness of the upper surface plate 12, that is, the thickness of the upper abutting portion 18 is changed, the shoulder portion 28 of the first rotating jig 24 and the abutting portion 38 of the backing member 42 are approached or separated from each other. By moving it, the length of the upper probe 48 can be arbitrarily and easily changed.

従って、このような本実施形態によれば、接合に供される中空形材10a,10bの上面板12や下面板14の厚さがそれぞれ異なる複数種類の広幅パネルを、キッシングボンド等の接合不良のない健全で且つ十分な接合強度を有する接合部をもって、安定的に得ることが可能となるのである。   Therefore, according to the present embodiment, a plurality of types of wide panels having different thicknesses of the upper surface plate 12 and the lower surface plate 14 of the hollow shape members 10a and 10b to be bonded are bonded to each other, such as kissing bonds. Therefore, it is possible to stably obtain a bonded portion having no sound and sufficient bonding strength.

さらに、図6に示される摩擦撹拌接合装置70にあっては、裏当て部材72と第二回転治具74の両方が、図3及び図4に示される形態における裏当て部材54と同様な構造とされている。つまり、裏当て部材72と第二回転治具74は、何れも、円環板形状を有し、それぞれの中心部に設けられた貫通孔73,75の内周面に、軸方向に延びるV溝56が、複数設けられている。
Further, in the friction stir welding apparatus 70 shown in FIG. 6, similar to the backing member 72 both of the second rotating jig 74, the backing member 54 in the form state where Ru shown in FIGS. 3 and 4 It is a simple structure. That is, the backing member 72 and the second rotating jig 74 both have an annular plate shape, and extend in the axial direction on the inner peripheral surfaces of the through holes 73 and 75 provided in the center portions thereof. A plurality of grooves 56 are provided.

また、第一回転治具24の内孔36内には、プローブ手段としての回転ロッド71が、第一回転治具24に対して、一体回転可能に且つ軸方向に相対移動可能に、挿通配置されている。更に、この回転ロッド71にあっては、第一回転治具24の内孔36から下方に突出する部位の上側部分が、上側プローブ76とされる一方、その下端部が、下側プローブ77とされている。更にまた、かかる回転ロッド71における上側プローブ76と下側プローブ77との間の部位の外周面には、裏当て部材72と第二回転治具74の各貫通孔73,75の内周面に設けられたV溝56に対応した断面V字状の突条58の複数が、周方向に隣り合って、軸方向に延びるように、一体形成されている。   Further, a rotating rod 71 as a probe means is inserted into the inner hole 36 of the first rotating jig 24 so as to be able to rotate integrally with the first rotating jig 24 and to be relatively movable in the axial direction. Has been. Further, in this rotating rod 71, the upper portion of the portion protruding downward from the inner hole 36 of the first rotating jig 24 is the upper probe 76, while the lower end portion is the lower probe 77. Has been. Furthermore, on the outer peripheral surface of the portion of the rotating rod 71 between the upper probe 76 and the lower probe 77, on the inner peripheral surface of each of the through holes 73 and 75 of the backing member 72 and the second rotating jig 74. A plurality of protrusions 58 having a V-shaped cross section corresponding to the provided V groove 56 are integrally formed so as to be adjacent to each other in the circumferential direction and extend in the axial direction.

そして、このような回転ロッド71に対して、裏当て部材72と第二回転治具74とが、各V溝56内に、突条58をそれぞれ突入せしめた状態で、それぞれ外挿されており、これによって、各裏当て部材72,74が、回転ロッド71に対して、相対回転不能で且つ軸方向に相対移動可能とされている。   And the backing member 72 and the 2nd rotation jig 74 are each extrapolated with respect to such a rotation rod 71 in the state which protruded the protrusion 58 in each V groove 56, respectively. Thus, the backing members 72 and 74 are not rotatable relative to the rotating rod 71 and are relatively movable in the axial direction.

また、ここでは、そのような裏当て部材72と第二回転治具74の回転ロッド71への外挿状態下で、それら裏当て部材72と第二回転治具74との間に、圧縮コイルばね60が、予圧縮せしめられた状態で、介装されており、以て、裏当て部材72の裏当て面46と第二回転治具74のショルダ面30の上側及び下側突合せ部18,20への接触状態下で、裏当て部材72と第二回転治具74との接近移動が阻止されるようになっている。即ち、本形態では、複数のV溝56と複数の突条58とにて、相対回転阻止機構が構成されており、また、圧縮コイルばね60によって、接近阻止機構が構成されている。
Further, here, the compression coil is interposed between the backing member 72 and the second rotating jig 74 under the extrapolation state of the backing member 72 and the second rotating jig 74 to the rotating rod 71. The spring 60 is interposed in a pre-compressed state, and therefore the upper and lower abutting portions 18 of the backing surface 46 of the backing member 72 and the shoulder surface 30 of the second rotating jig 74, Under the state of contact with 20, the approaching movement between the backing member 72 and the second rotating jig 74 is prevented. That is, in this form state at a plurality of V grooves 56 and a plurality of projections 58. The relative rotation preventing mechanism is configured, also, by the compression coil spring 60, close preventing mechanism is constituted.

かくして、裏当て部材72と第二回転治具74の回転ロッド71への挿通状態下において、裏当て部材72と第二回転治具74とが相互に接近若しくは離隔移動可能とされていると共に、上側及び下側プローブ76,77の上側及び下側突合せ部18,20への貫通部位の長さが可変とされているのである。   Thus, while the backing member 72 and the second rotating jig 74 are inserted into the rotating rod 71, the backing member 72 and the second rotating jig 74 can be moved toward or away from each other. The lengths of the penetrating portions of the upper and lower probes 76 and 77 to the upper and lower butting portions 18 and 20 are variable.

従って、このような形態によれば、先の形態と同様な作用・効果が、極めて有効に享受され得るのであり、それに加えて、図5に示される実施形態と同様に、接合に供される中空形材10a,10bの上面板12と下面板14の厚さがそれぞれ異なる複数種類の広幅パネルを、キッシングボンド等の接合不良のない健全で且つ十分な接合強度を有する接合部をもって、安定的に得ることが可能となるといった優れた特徴も、有利に発揮され得ることとなるのである。
Therefore, according to this form state, similar actions and effects as in the previous forms are as it can be very effectively enjoyed, in addition, as with the implementation form that shown in FIG. 5, the joint A plurality of types of wide panels having different thicknesses of the upper surface plate 12 and the lower surface plate 14 of the hollow shape members 10a and 10b to be provided have a bonding portion having a sound and sufficient bonding strength without bonding defects such as kissing bonds. Also, the excellent feature that it can be stably obtained can be advantageously exhibited.

また、図7に示される摩擦撹拌接合装置78では、全体の構造が、図5に示される実施形態と同様とされているが、回転ロッド66の下端部に対して、図1に示された第一の実施形態における第二回転治具26と同様な構造を有する先端裏当て部材79が、一体形成されている。即ち、先端裏当て部材79は、全体として、円環板形状を有しており、回転ロッド66の下端部に対して、外フランジ形態をもって、一体的に設けられている。また、かかる先端裏当て部材79にあっては、その上面が、下側突合せ部20の下面に接触する裏当て面80とされている。
Further, the friction stir welding apparatus 78 shown in FIG. 7, the overall structure, has been the same as the implementation form that shown in FIG. 5, with respect to the lower end of the rotating rod 66, in FIG. 1 shows A tip backing member 79 having the same structure as the second rotating jig 26 in the first embodiment is integrally formed. That is, the tip backing member 79 has an annular plate shape as a whole, and is provided integrally with the lower end portion of the rotating rod 66 in the form of an outer flange. Further, in the tip backing member 79, the upper surface thereof is a backing surface 80 that contacts the lower surface of the lower butt portion 20.

従って、本実施形態においては、上側突合せ部18と下側突合せ部20とを同時に摩擦撹拌接合する際に、下側突合せ部20の下面に接触位置せしめられる裏当て治具を別の容易する必要がなく、かかる摩擦撹拌接合作業、ひいては目的とする広幅パネルの製造作業の簡略化が有利に図られ得る。   Therefore, in the present embodiment, when the upper butt portion 18 and the lower butt portion 20 are simultaneously friction stir welded, it is necessary to make another backing jig that is brought into contact with the lower surface of the lower butt portion 20 in another easy manner. Therefore, it is possible to advantageously simplify the friction stir welding operation and thus the intended wide panel manufacturing operation.

また、先端裏当て部材79が、第二回転治具26と共に一体回転せしめられるようになるため、下側突合せ部20の下面と先端裏当て部材79の裏当て面80との間に摩擦熱が発生せしめられ、それによって、下側突合せ部20の下面側部分が、より十分に可塑化され得て、下側突合せ部20全体のメタルが、より十分に撹拌され得る。そして、その結果として、下側突合せ部20において形成される接合部の接合強度が、より一層有利に高められ得ることとなるのである。   Further, since the tip backing member 79 can be rotated together with the second rotating jig 26, frictional heat is generated between the lower surface of the lower abutting portion 20 and the backing surface 80 of the tip backing member 79. The lower surface side portion of the lower butt portion 20 can be more sufficiently plasticized, and the entire metal of the lower butt portion 20 can be more sufficiently agitated. As a result, the joint strength of the joint formed at the lower butt 20 can be further advantageously increased.

さらに、図8に示される摩擦撹拌接合装置82においては、円環板状の裏当て部材84と第二回転治具86とが、それらの対向面における各貫通孔88,90の開口周縁部からそれぞれ一体的に延び出す円筒状の連結部92にて一体的連結されている。つまり、裏当て部材84と第二回転治具86とが、連結部92にて連結されてなる一体品として、構成されている。   Further, in the friction stir welding apparatus 82 shown in FIG. 8, the annular plate-like backing member 84 and the second rotating jig 86 are formed from the opening peripheral edge of each of the through holes 88 and 90 on their opposing surfaces. These are integrally connected by a cylindrical connecting portion 92 extending integrally. That is, the backing member 84 and the second rotating jig 86 are configured as an integrated product that is connected by the connecting portion 92.

また、このような一体品からなる裏当て部材84と第二回転治具86の各貫通孔88,90の内周面と連結部92の内孔の内周面には、図6に示される形態における上側及び下側裏当て部材72,74と同様に、V溝56が、複数設けられている。
Further, the inner peripheral surface of each of the through holes 88 and 90 of the backing member 84 and the second rotating jig 86 and the inner peripheral surface of the inner hole of the connecting portion 92 are shown in FIG. Like the upper and lower backing members 72, 74 in that form state, V groove 56 is provided with a plurality.

さらに、ここでは、第一回転治具24の内孔36内に、回転ロッド71が、図6に示される形態のそれと同様な構造を有して、第一回転治具24に対して、一体回転可能に且つ軸方向に相対移動可能に、挿通配置されている。また、この回転ロッド71における上側及び下側プローブ76,77の間の部位にも、V溝56に対応する断面V字状の突条58の複数が、一体形成されている。
Further, here, in the inner hole 36 of the first rotating jig 24, rotating rod 71, has a similar structure of that Ru forms state that shown in FIG. 6, with respect to the first rotating jig 24 These are arranged so as to be able to rotate integrally and relatively move in the axial direction. Also, a plurality of protrusions 58 having a V-shaped cross section corresponding to the V groove 56 are integrally formed at a portion between the upper and lower probes 76 and 77 in the rotating rod 71.

そして、このような回転ロッド71に対して、裏当て部材84と第二回転治具86とが、各V溝56内に、突条58を突入せしめた状態で、それぞれ外挿されており、これによって、裏当て部材84と第二回転治具86とが、回転ロッド71に対して、相対回転不能で且つ軸方向に相対移動可能とされており、以て、回転ロッド71の上側及び下側プローブ76,77の上側及び下側突合せ部18,20への貫通部位の長さが可変とされているのである。   Then, the backing member 84 and the second rotating jig 86 are extrapolated with respect to such a rotating rod 71 in a state in which the protrusion 58 is inserted into each V groove 56, respectively. As a result, the backing member 84 and the second rotating jig 86 are not rotatable relative to the rotating rod 71 and are relatively movable in the axial direction. The lengths of the penetrating portions to the upper and lower butting portions 18, 20 of the side probes 76, 77 are variable.

従って、本形態においても、接合に供される中空形材10a,10bの上面板12と下面板14の厚さがそれぞれ異なる複数種類の広幅パネルを、キッシングボンド等の接合不良のない健全で且つ十分な接合強度を有する接合部をもって、安定的に得ることが可能となるのである。
Thus, also in this form state, the hollow shape members 10a to be subjected to joining and 10b plurality of types of wide panels have different thicknesses, respectively of the upper plate 12 and lower plate 14 of sound without junctions defects such Kissing Bond In addition, it is possible to stably obtain a joint having a sufficient joint strength.

ところで、前記せる幾つかの形態では、互いに上下方向に対向して、平行に位置せしめられた二つの面板12,14が、複数のリブ16にて一体的連結されてなる中空形材10a,10bを摩擦撹拌接合する手法とそれに用いられる装置とに対して、本発明を適用したものの具体例が示されていたが、本発明は、その他、互いに対向して平行に位置する3枚以上の面板が、複数のリブにて一体的に連結されてなる中空形材の複数を摩擦撹拌接合する手法とそれに用いられる装置に対しても、有利に適用され得るものである。なお、その場合には、二つ以上の回転治具と二つ以上の裏当て部材とが、同軸上において、互いに交互に配置せしめられて、摩擦撹拌接合装置が構成され、そして、そのような装置が、摩擦撹拌接合操作に用いられることとなる。
However, in some form states the cause, to face each other in the vertical direction, the two face plates 12, 14 which is allowed positioned parallel, hollow shape member 10a made are integrally connected by a plurality of ribs 16, Although the specific example of what applied this invention was shown with respect to the method of friction stir welding of 10b, and the apparatus used for it, this invention is 3 or more sheets which are located in parallel and mutually opposed. The face plate can be advantageously applied also to a technique for friction stir welding of a plurality of hollow shape members integrally connected by a plurality of ribs and an apparatus used therefor. In that case, two or more rotating jigs and two or more backing members are arranged alternately on the same axis to constitute a friction stir welding apparatus, and The device will be used for friction stir welding operation.

その他、本発明は、各種の形態において実施され得るものであって、当業者の知識に基づいて採用される本発明についての種々なる変更、修正、改良に係る各種の実施の形態が、何れも、本発明の趣旨を逸脱しない限りにおいて、本発明の範疇に属するものであることが、理解されるべきである。   In addition, the present invention can be implemented in various forms, and any of various embodiments relating to various changes, modifications, and improvements of the present invention adopted based on the knowledge of those skilled in the art. It should be understood that the present invention belongs to the category of the present invention without departing from the spirit of the present invention.

以下に、本発明の幾つかの実施例を示し、本発明の特徴を更に明確にすることとするが、本発明が、そのような実施例の記載によって、何等の制約をも受けるものでないことは、言うまでもないところである。   In the following, some examples of the present invention will be shown and the characteristics of the present invention will be further clarified, but the present invention is not limited by the description of such examples. Needless to say.

先ず、接合されるべき中空形材として、面板の厚さが10mmで、全体の高さが250mm、面板の対向面間の距離が230mm、幅が250mm、長さが10mとされ、且つ6N01−T5の材質を有するアルミニウム合金からなるダブルスキン構造の押出形材を二つ準備した。また、摩擦撹拌接合装置として、図1に示される如き構造を有する第一及び第二回転治具と、裏当て部材と、第二回転治具及び裏当て部材に設けられた上側及び下側プローブとを備え、上側及び下側プローブのそれぞれの直径が10mmで、第一及び第二回転治具の各ショルダ面の直径が25mm、裏当て部材の裏当て面の直径が25mmとされた装置を準備した。   First, as a hollow shape material to be joined, the thickness of the face plate is 10 mm, the overall height is 250 mm, the distance between the opposing faces of the face plate is 230 mm, the width is 250 mm, the length is 10 m, and 6N01- Two extruded shapes having a double skin structure made of an aluminum alloy having a T5 material were prepared. Further, as the friction stir welding apparatus, first and second rotating jigs having a structure as shown in FIG. 1, a backing member, and upper and lower probes provided on the second rotating jig and the backing member. A device in which each of the upper and lower probes has a diameter of 10 mm, the diameter of each shoulder surface of the first and second rotating jigs is 25 mm, and the diameter of the backing surface of the backing member is 25 mm. Got ready.

そして、準備された二つの押出形材を幅方向において突き合わせて、各押出形材の二枚の面板の対向方向において対応する上側突合せ部と下側突合せ部とを、それぞれ形成せしめた状態で、二つの押出形材をテーブル上に固定した。   And in the state in which the prepared two extruded sections are butted in the width direction, and the corresponding upper butted section and lower butted section in the opposing direction of the two face plates of each extruded section are respectively formed. Two extruded profiles were fixed on the table.

引き続き、摩擦撹拌接合装置の第一回転治具を、軸方向への移動を不能とした状態で、それに対して、第二回転治具を相対移動させて、それらのショルダ面間の距離を、上側及び下側突合せ部のそれぞれの上面同士の間の距離と同じ240mmとなるように調節した後、裏当て部材を第二回転治具に対して相対移動させて、裏当て部材の裏当て面と第二回転治具のショルダ面との間の距離を、上側突合せ部の下面と下側突合せ部の上面との間の距離と同じ230mmとなるように調節した。また、それら第二回転治具と裏当て部材は、それぞれの位置を調節した後、軸方向への移動を不能とした。   Subsequently, in a state where the first rotating jig of the friction stir welding apparatus cannot be moved in the axial direction, the second rotating jig is moved relative to the first rotating jig, and the distance between the shoulder surfaces is determined. After adjusting the distance between the upper surfaces of the upper and lower abutting portions to be 240 mm, which is the same as the distance between the upper surfaces, the backing member is moved relative to the second rotating jig, and the backing surface of the backing member And the shoulder surface of the second rotating jig were adjusted to be 230 mm, which is the same as the distance between the lower surface of the upper butt portion and the upper surface of the lower butt portion. Further, the second rotating jig and the backing member were made impossible to move in the axial direction after adjusting their positions.

次いで、第一及び第二回転治具と裏当て部材とを1000rpmの回転速度で回転させつつ、上側プローブと下側プローブのそれぞれの側面を、上側及び下側突合せ部の接合開始側の端面に押し付けて、それら上側プローブと下側プローブとを、上側及び下側突合せ部にそれぞれ入り込ませた。このとき、裏当て部材の裏当て面が、上側突合せ部の下面に接触し、且つ第二回転治具のショルダ面が、下側突合せ部の上面に接触し、更に、第一回転治具のショルダ面が、上側突合せ部の上面に接触するようにした。   Next, while rotating the first and second rotating jigs and the backing member at a rotation speed of 1000 rpm, the respective side surfaces of the upper probe and the lower probe are turned to the end surfaces on the joining start side of the upper and lower abutting portions. The upper probe and the lower probe were inserted into the upper and lower abutting portions, respectively. At this time, the backing surface of the backing member is in contact with the lower surface of the upper butting portion, the shoulder surface of the second rotating jig is in contact with the upper surface of the lower butting portion, and further, The shoulder surface was in contact with the upper surface of the upper butt portion.

その後、第一及び第二回転治具と裏当て部材とを、回転速度:1000rpm、接合速度:500mm/分の条件で、水平に移動させて、上側及び下側突合せ部を同時に摩擦撹拌接合し、以て、目的とする広幅パネルを得た。   Thereafter, the first and second rotating jigs and the backing member are moved horizontally at a rotational speed of 1000 rpm and a joining speed of 500 mm / min, and the upper and lower butt portions are simultaneously friction stir welded. Thus, the intended wide panel was obtained.

そして、かくして得られた広幅パネルを接合方向に対して直角な方向で切断して、接合部の断面を視認により観察した。その結果、欠陥は、何等認められなかった。これは、本発明手法に従って製造された広幅パネルが、健全な接合部を有していることを、如実に示している。   And the wide panel obtained in this way was cut | disconnected in the direction orthogonal to a joining direction, and the cross section of the junction part was observed visually. As a result, no defects were recognized. This clearly shows that the wide panel manufactured according to the method of the present invention has a sound joint.

また、それとは別に、公知の手法により、広幅パネルの引張試験と静的4点曲げ試験とを行った結果、接合部から離れた面板部位で、破断した。これによって、本発明手法に従って製造された広幅パネルが十分に高い接合強度を有するものであることが、認識され得る。   In addition, as a result of conducting a tensile test and a static four-point bending test on a wide panel by a known method, the plate was broken at a face plate part away from the joint. Thereby, it can be recognized that the wide panel manufactured according to the method of the present invention has a sufficiently high bonding strength.

さらに、公知の手法により、広幅パネルの4点曲げ疲労試験を行った結果、接合部から離れた面板部位で破壊された。また、そのときの破壊荷重が、従来のMIG溶接手法にて、前記準備された二つの押出形材を突合せ接合して得られた広幅パネルの4点曲げ疲労試験による破壊荷重と比較して、高いことが、認められた。この結果からも、本発明手法に従って製造された広幅パネルが十分に高い接合強度を有するものであることが、明確に認識され得る。   Furthermore, as a result of performing a four-point bending fatigue test of the wide panel by a known method, the wide panel was broken at the face plate portion away from the joint. In addition, the breaking load at that time is compared with the breaking load by the four-point bending fatigue test of the wide panel obtained by butt-joining the two extruded profiles prepared by the conventional MIG welding technique. It was recognized that it was expensive. From this result, it can be clearly recognized that the wide panel manufactured according to the method of the present invention has a sufficiently high bonding strength.

本発明に従う構造を有する摩擦撹拌接合装置の一例を用いて、二つの中空形材を摩擦撹拌接合する際の一工程例を示す説明図である。It is explanatory drawing which shows one process example at the time of carrying out friction stir welding of two hollow shapes using an example of the friction stir welding apparatus which has a structure according to this invention. 図1に示された摩擦撹拌接合装置を用いて、二つの中空形材を摩擦撹拌接合する際の別の工程例を示す説明図である。It is explanatory drawing which shows another example of a process at the time of carrying out friction stir welding of two hollow shapes using the friction stir welding apparatus shown by FIG. 擦撹拌接合装置の別の例を用いて、二つの中空形材を摩擦撹拌接合している状態を示す図1に対応する図である。Using another example of the friction stir welding apparatus is a view corresponding to FIG. 1 showing a state of friction stir welding the two hollow profile. 図3のIV−IV断面における部分拡大説明図である。FIG. 4 is a partially enlarged explanatory view taken along the line IV-IV in FIG. 3. 本発明に従う構造を有する摩擦撹拌接合装置の別の例を用いて、二つの中空形材を摩擦撹拌接合している状態を示す図1に対応する図である。It is a figure corresponding to FIG. 1 which shows the state which is carrying out the friction stir welding of two hollow shapes using another example of the friction stir welding apparatus which has a structure according to this invention. 擦撹拌接合装置の他の例を用いて、二つの中空形材を摩擦撹拌接合している状態を示す図1に対応する図である。Using another example of friction stir welding apparatus is a view corresponding to FIG. 1 showing a state of friction stir welding the two hollow profile. 本発明に従う構造を有する摩擦撹拌接合装置の更に他の例を用いて、二つの中空形材を摩擦撹拌接合している状態を示す図1に対応する図である。It is a figure corresponding to FIG. 1 which shows the state which is carrying out the friction stir welding of two hollow shapes using the further another example of the friction stir welding apparatus which has a structure according to this invention. 擦撹拌接合装置の別の例を用いて、二つの中空形材を摩擦撹拌接合している状態を示す図1に対応する図である。Using another example of the friction stir welding apparatus is a view corresponding to FIG. 1 showing a state of friction stir welding the two hollow profile.

符号の説明Explanation of symbols

10 中空形材
12 上面板
14 下面板
16 リブ
18 上側突合せ部
20 下側突合せ部
22,52,62,70,78,82 摩擦撹拌接合装置
24 第一回転治具
26,64,74,86 第二回転治具
27,30 ショルダ面
34,68,77 下側プローブ
42,54,72,84 裏当て部材
46 裏当て面
48,55,76 上側プローブ
56 V溝
58 突条
60 圧縮コイルばね
66,71 回転ロッド

DESCRIPTION OF SYMBOLS 10 Hollow profile 12 Upper surface board 14 Lower surface board 16 Rib 18 Upper butt | matching part 20 Lower butt | matching part 22,52,62,70,78,82 Friction stir welding apparatus 24 1st rotary jig 26,64,74,86 1st Two-turn jig 27, 30 Shoulder surface 34, 68, 77 Lower probe 42, 54, 72, 84 Backing member 46 Backing surface 48, 55, 76 Upper probe 56 V groove 58 Projection 60 Compression coil spring 66, 71 Rotating rod

Claims (5)

互いに対向して平行に位置する上側及び下側の二つの面板が、それら対向面間に延びる複数のリブにて一体的に連結されてなる構造の中空形材の二つを、対応する面板の端面同士において突き合わせて、それら面板の対向方向において形成された上側及び下側二つの突合せ部を同時に摩擦撹拌接合するための装置であって、
前記上側突合せ部における上側面板上面に接触せしめられるショルダ面を備えた円環板状のショルダ部が下端部に設けられた、軸方向に貫通する内孔を有し、軸回りに回転可能で且つ軸方向に移動可能とされた円筒形状の第一回転治具と、
前記下側突合せ部における下側面板上面に接触せしめられるショルダ面を備えた円環板形状のショルダ部が下端部に設けられた、前記第一回転治具の内孔の下端開口部から下方に突出した状態で、該内孔内に同軸的に且つ軸方向に相対移動可能に挿入、配置されて、軸回りに回転可能で且つ軸方向に移動可能とされた第二回転治具と、
該第二回転治具のショルダ部の中心部から同軸的に下方に突出するように設けられて、軸回りに回転可能で且つ軸方向に移動可能とされた突出部にて構成され、該突出部の軸回りの回転によって前記下側突合せ部の摩擦攪拌接合操作が実施される下側プローブと、
前記上側突合せ部における上側面板下面に接触せしめられる裏当て面を上面とした円環板形状の当接部と、該当接部の裏当て面上に同軸的に一体形成された円筒状の挿入部とからなり、該挿入部が前記第一回転治具の内孔とそこに挿入される前記第二回転治具の挿入部位との間隙内に同軸的に且つ軸方向に相対移動可能に挿入、配置されて、軸回りに回転可能で且つ軸方向に移動可能とされた裏当て部材と、
該裏当て部材における前記挿入部の前記当接部側となる基部側部位にて構成され、該裏当て部材の軸回りの回転に基づく該基部側部位の回転によって前記上側突合せ部の摩擦攪拌接合操作が実施される上側プローブとを、
含んで構成されていることを特徴とする中空形材の摩擦撹拌接合装置。
Two hollow plates having a structure in which two upper and lower face plates facing and parallel to each other are integrally connected with each other by a plurality of ribs extending between the facing faces are used as corresponding face plates. The upper and lower two butted portions formed in the opposing direction of the face plates , and simultaneously friction stir welding,
An annular plate-shaped shoulder portion provided with a shoulder surface brought into contact with the upper surface of the upper side plate in the upper butt portion has an inner hole penetrating in the axial direction provided at the lower end portion, and is rotatable around the axis. A cylindrical first rotating jig that is movable in the axial direction;
An annular plate-shaped shoulder portion having a shoulder surface that is brought into contact with the upper surface of the lower side plate in the lower butting portion is provided at the lower end portion, and downward from the lower end opening portion of the inner hole of the first rotating jig. A second rotating jig that is inserted and arranged coaxially and axially movable in the inner hole in a protruding state, and is rotatable about the axis and movable in the axial direction;
The projecting portion is provided so as to project coaxially downward from the center portion of the shoulder portion of the second rotating jig, and is configured by a projecting portion that is rotatable about an axis and movable in the axial direction. A lower probe in which a friction stir welding operation of the lower butt portion is performed by rotation around the axis of the portion;
An annular plate-shaped abutting portion having a backing surface brought into contact with the lower surface of the upper side plate in the upper butt portion, and a cylindrical insertion portion coaxially and integrally formed on the backing surface of the corresponding portion The insertion portion is inserted coaxially and axially relative to the gap between the inner hole of the first rotating jig and the insertion portion of the second rotating jig inserted therein, A backing member disposed and rotatable about an axis and movable in the axial direction;
Friction stir welding of the upper butt portion is configured by rotation of the base side portion based on rotation around the axis of the backing member, which is configured at a base side portion which is the contact portion side of the insertion portion in the backing member An upper probe on which the operation is performed,
A friction stir welding apparatus for a hollow shape material, characterized in that it is configured to include.
前記下側プローブが、前記第二回転治具に対して一体的に設けられている請求項1に記載の中空形材の摩擦撹拌接合装置。The hollow stirrer friction stir welding apparatus according to claim 1, wherein the lower probe is provided integrally with the second rotating jig. 前記第二回転治具を軸方向に貫通するように、同軸的に回転可能で且つ軸方向に相対移動可能に回転ロッドが配設され、該回転ロッドの該第二回転治具における前記ショルダ部から下方に突出する部位にて、前記下側プローブが構成されている請求項1に記載の中空形材の摩擦撹拌接合装置。A rotating rod is disposed so as to be coaxially rotatable and relatively movable in the axial direction so as to penetrate the second rotating jig in the axial direction, and the shoulder portion of the rotating rod in the second rotating jig The friction stir welding apparatus for a hollow member according to claim 1, wherein the lower probe is configured at a portion protruding downward from the base. 前記下側突合せ部における下側面板下面に接触せしめられる裏当て面を上面とした円環板形状の先端裏当て部材が下端部に一体的に設けられた回転ロッドが、前記第二回転治具を軸方向に貫通するように、同軸的に回転可能で且つ軸方向に相対移動可能に配設され、該回転ロッドの前記先端裏当て部材側となる基部側部位にて、前記下側プローブを構成した請求項1に記載の中空形材の摩擦撹拌接合装置。A rotating rod having an annular plate-shaped tip backing member integrally formed at the lower end with a backing surface that is brought into contact with the lower surface of the lower side plate at the lower butt is provided at the lower end of the second rotating jig. The lower probe is disposed at a base side portion that is coaxially rotatable and relatively movable in the axial direction so as to penetrate the axial direction of the rotating rod, and is on the distal end backing member side of the rotating rod. The hollow stir friction stir welding apparatus according to claim 1, which is configured. 前記中空形材が、互いに対向して平行に位置する前記面板の二つが、それらの対向面間に延びる前記複数のリブにて一体的に連結されてなるダブルスキン構造のアルミニウム合金押出形材である請求項乃至請求項のうちの何れか1項に記載の中空形材の摩擦撹拌接合装置。 The hollow profile is an aluminum alloy extruded profile having a double skin structure in which two of the face plates positioned parallel to each other are integrally connected by the plurality of ribs extending between the facing surfaces. there friction stir welding apparatus of the hollow profile according to any one of claims 1 to claim 4.
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