JP3978257B2 - Workpiece joining method by friction stir welding - Google Patents
Workpiece joining method by friction stir welding Download PDFInfo
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- JP3978257B2 JP3978257B2 JP18112097A JP18112097A JP3978257B2 JP 3978257 B2 JP3978257 B2 JP 3978257B2 JP 18112097 A JP18112097 A JP 18112097A JP 18112097 A JP18112097 A JP 18112097A JP 3978257 B2 JP3978257 B2 JP 3978257B2
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- friction stir
- stir welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
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Description
【０００１】
本発明は、摩擦撹拌接合によるアルミニウム等の金属製のワークの接合方法に関する。
【０００２】
【従来の技術】
アルミニウム等の金属製構造材の接合方法として、摩擦撹拌接合法と称される接合法がある。
【０００３】
この摩擦撹拌接合法は、構造材同士を固相接合させるもので、図３に示されるような回転子（１）をツールとして用いる。この回転子（１）は、円柱状回転子本体（２）の先端軸芯部に、この円柱状回転子本体（２）よりも径小なピン状の摩擦撹拌用プローブ（３）を同軸一体に突設させたもので、硬質で耐熱性に優れた、鋼などの材料にて製作されている。
【０００４】
接合は、図４に示されるように、この回転子（１）を自軸回りで回転させながら、そのプローブ（３）の先端を、ワーク（５１）（５２）の突き合わせ境界部（５３）に押付け状態に当接させ、その摩擦熱で当接部分を軟化可塑化させる。そして、回転子（１）を更にワーク（５１）（５２）に押し付けて、プローブ （３）をワーク（５１）（５２）の肉厚方向に挿入させていき、円柱状回転子本体（２）の先端のショルダー部（４）をワーク（５１）（５２）に押付け状態に当接させる。しかる後、その状態を維持しながら、回転子（１）をワーク（５１）（５２）の突き合わせ境界部（５３）に沿って移動させていく。回転子（１）の通過する突き合わせ境界部では、周辺の材料が、回転子（１）の回転による摩擦熱で軟化撹拌され、かつ、円柱状回転子本体（２）のショルダー（４）にて飛散を規制されながらプローブ（３）の通過溝を埋めるように塑性流動したのち、熱を急速に失って冷却固化される。こうして、突き合わせ部（５３）における材料の軟化、密着変形、撹拌、冷却固化が回転子（１）の移動に伴って順次繰り返されていき、突き合わせ部（５３）においてワーク（５１）（５２）同士が互いに一体化され、順次接合（５８）されていく。
【０００５】
この摩擦撹拌接合法は、材料を溶融させることなく軟化状態でワーク（５１）（５２）同士を直接接合させるものであり、溶接の場合のような熱影響等による品質面での問題が発生せず、高品質で強固な接合部（５８）を形成できる。
【０００６】
【発明が解決しようとする課題】
ところで、ワーク（５１）（５２）の縁部同士を単に突き合わせただけでは、それらの間に隙間を生じ、また、接合中に、ワーク（５１）（５２）の突き合わせ部に、回転子（１）による力学的作用や摩擦による熱の影響などにより、開きの挙動が起こり、これらが接合不良を生じさせる要因となることから、この隙間や開きをできるだけ小さいものにすべく、種々の拘束治具が考え出されている。
【０００７】
しかしながら、治具の使用は、ワークへの治具の取付け作業が必要となるのみならず、治具の管理、保管等を必要とし、接合作業を繁雑で厄介なものにする欠点がある。
【０００８】
本発明は、上記のような背景のなかで、ワークの突き合わせ部の不本意な隙間や開きを、治具を用いることなく確実に阻止でき、接合作業を容易で能率的に遂行していくことのできる摩擦撹拌接合によるワークの接合方法を提供することを課題とする。
【０００９】
【課題を解決するための手段】
上記課題は、第１ワークと第２ワークとを突き合わせ、該突き合わせ部において摩擦撹拌用プローブを両ワークの肉に及ぶように作用せしめ、両ワークを接合する摩擦撹拌接合によるワークの接合方法であって、両ワークに、それらの突き合わせ縁部において、互いに係合しあって両ワークの突き合わせ部の開きを阻止する、先端部が半円弧状の曲面に成形されているＬ字状のフック部が一体成形され、該フック部同士を係合させた状態で両ワークの上記接合を行うことを特徴とする摩擦撹拌接合によるワークの接合方法によって解決される。
【００１０】
即ち、両ワークの突き合わせ縁部に形成されたフック部同士を係合させた状態で摩擦撹拌接合を行うものであることにより、ワークの突き合わせ部の不本意な隙間や開きを防止できる。しかも、フック部はワークの突き合わせ縁部に一体成形されていることにより、ワーク同士を突き合わせていく際にフック部同士を係合させるだけでよく、拘束治具を別途用意してワークへの治具の取付け作業を行ったり、治具の管理、保管等を行う必要がなくなって、接合作業を容易にかつ能率良く遂行していくことができる。
【００１１】
上記方法では、両ワークの突き合わせ縁部が厚肉に形成され、前記各フック部がこの厚肉部の一方の面に溝を設けてＬ字状のフック部に形成されているのがよい。一方のワークの突き合わせ縁部を他方のワークの突き合わせ縁部に重ねるようにして、一方のワークのＬ字状フック部を他方のワークの溝に嵌め込んで容易に係合させていくことができ、両ワークの接合作業を容易に遂行していくことができる。しかも、突き合わせ縁部が厚肉に形成されていることにより、Ｌ字状フック部の形成が容易になるのみならず、摩擦撹拌接合に、厚肉部の肉が係合部内の隙間を埋め、接合部に肉厚不良を防いで、しっかりとした接合部が形成される。加えて、Ｌ字状フック部を溝内に嵌合して係合することであることにより、ワークの突き合わせ部の高さが不本意に高くなることもない。
【００１２】
【発明の実施の形態】
次に、本発明の実施形態を図面に基づいて説明する。
【００１３】
図１及び図２に示される第１実施形態は、摩擦撹拌接合により突き合わせ継手を形成する場合のものである。即ち、（６）は第１ワーク、（７）は第２ワークであり、両ワーク（６）（７）は、アルミニウム製押出形材からなるリブ付き床材によるものであり、その側縁部同士を突き合わせ、その突き合わせ部に摩擦撹拌接合用のツールである回転子（１）を作用せしめて両ワーク（６）（７）を接合する。
【００１４】
図１（イ）に示されるように、両ワーク（６）（７）の突き合わせ縁部（６ａ）（７ａ）は一方の面側に隆起してそれぞれ厚肉に形成されている。第１ワーク（６）の厚肉部（６ａ）の縁部上面には、縁方向に延びる溝（９）が形成されており、この溝（９）によって内向きＬ字状のフック部（１０）が形成されている。このＬ字状フック部（１０）のフック先端部は、溝（９）の下方の肉厚と同等程度、厚肉部（６ａ）の上面よりも低い位置となるように形成されている。また、溝（９）の底部とＬ字状フック部（１０）の先端部は、例えば曲率半径１ｍｍ程度の半円弧状の曲面に成形されている。これら溝（９）、Ｌ字状フック部（１０）は、第１ワーク（６）の押出加工の際に一体押出成形されて形成されたものである。押出によって形成することにより、これら溝（９）、Ｌ字状フック部（１０）をワーク（６）の全長にわたって容易に形成することができる。
【００１５】
また、第２ワーク（７）の厚肉部（７ａ）の縁部下面にも、同じく縁方向に延びる溝（９）が形成され、この溝（９）によって内向きＬ字状のフック部（１０）が形成されている。このＬ字状フック部（１０）のフック先端部も、溝（９）の下方の肉厚と同等程度、厚肉部（７ａ）の下面よりも高い位置となるように形成されている。また、同様に溝（９）の底部とＬ字状フック部（１０）の先端部は半円弧状の曲面に成形されている。これら溝（９）、Ｌ字状フック部（１０）も、同様にワーク（７）の押出加工の際に一体押出成形されて形成されたものである。
【００１６】
本実施形態は、同一構造のリブ付き床材を複数並列状態に配置して突き合わせ床を製作するものであり、図２に示されるように、各ワーク（６）（７）の左右の両側縁部に、上記のような溝（９）（９）、Ｌ字状フック部（１０）（１０）が上下逆向きの態様で形成されている。なお、両ワーク（６）（７）は、本体板部の肉厚が例えば２．３ｍｍ、厚肉部（６ａ）（７ａ）の厚さが４ｍｍに設計されている。
【００１７】
上記のようなワーク（６）（７）を用い、側縁部同士を突き合わせ状態にする。即ち、図１（イ）に示されるように、第１ワーク（６）の側縁部の上方に第２ワーク（７）の側縁部を位置させ、第２ワーク（７）の側縁部を第１ワーク（６）の側縁部に重ね合わせるように下降させていき、第２ワーク（７）のＬ字状フック部（１０）を第１ワーク（６）の溝（９）内に嵌合する。これにより、第１ワーク（６）のＬ字状フック部（１０）も第２ワーク（７）の溝（９）内に嵌合され、図１（ロ）に示されるように、両ワーク（６）（７）は、その全長にわたって、開きをしっかりと阻止された突き合わせ状態に組み合わされる。この嵌合において、溝（９）（９）の底部とＬ字状フック部（１０）（１０）の先端部は上記のように半円弧状の曲面に形成されていることにより、嵌合を容易にかつスムーズに行っていくことができる。また、この嵌合係合された状態において、両ワーク（６）（７）の厚肉部（６ａ）（７ａ）は、上記のような寸法関係により、表裏それぞれ面一に連続したものになり、両ワーク（６）（７）の突き合わせ部の高さが高くなってしまうのが防止される。
【００１８】
しかる後、図１（ハ）に示されるように、厚肉部（６ａ）（７ａ）の隆起する側の面から、両ワーク（６）（７）の突き合わせ部に対し、接合用の回転子（１）を作用せしめて、両ワーク（６）（７）を摩擦撹拌接合していく。接合は、表裏両面ともに行ってもよいし、いずれか一方の面側からのみ行ってもよい。両ワーク（６）（７）の突き合わせ部は、その全長にわたって係合して結合されており、そのため、両ワーク（６）（７）間にはその全長にわたって開きが存在せず、また、接合中に、回転子（１）による力学的作用や摩擦による熱の影響が及んでも、両ワーク（６）（７）の突き合わせ部が開いてしまうというようなこともなく、両ワーク（６）（７）は品質良くしっかりと接合される。また、Ｌ字状フック部（１０）（１０）と溝（９）（９）との間の隙間は、接合中に、厚肉部（６ａ）（７ａ）の肉によって埋められるので、その部分がワーク（６）（７）の本体部の肉厚より薄くなって接合部の強度が低下させてしまうということもない。
【００１９】
以上に、本発明の実施形態を示したが、本発明、その技術思想を逸脱しない範囲で各種の変更をなし得る。例えば、上記実施形態では、溝（９）とフック部 （１０）をワーク（６）（７）の押出成形の際に一体押出成形して形成しているが、溝（９）等は切削等により行ったものであってもよい。また、上記実施形態では、ワーク（６）（７）をアルミニウム製の押出材としているが、その他の金属であってもよく、また、圧延材などであってもよい。また、本発明方法は、板状材同士の接合の場合に限られるものではなく、各種の部材の接合に広く適用されてよい。また、ワークの突き合わせ縁部に一体に備えられるフック部は、上記のような特定形態のフック部（１０）に限られるものではなく、各種形態のフック部が採用されてよい。
【００２０】
【発明の効果】
上述の次第で、本発明の摩擦撹拌接合によるワークの接合方法は、両ワークの突き合わせ縁部に一体成形されたフック部同士を係合させた状態で摩擦撹拌接合を行うものであることにより、ワークの突き合わせ部の不本意な隙間や開きを防止でき、しかも、拘束治具が不要で、接合作業を容易にかつ能率良く遂行していくことができる。
【００２１】
また、両ワークの突き合わせ縁部が厚肉に形成され、前記各フック部がこの厚肉部の一方の面に溝を設けてＬ字状のフック部に形成されているものとすることにより、一方のワークの突き合わせ縁部を他方のワークの突き合わせ縁部に重ねるようにして、一方のワークのＬ字状フック部を他方のワークの溝に嵌め込んで容易に係合させていくことができる。しかも、突き合わせ縁部が厚肉に形成されていることで、Ｌ字状フック部の形成が容易になるのみならず、摩擦撹拌接合に、厚肉部の肉が係合部内の隙間を埋め、接合部に肉厚不良を防いで、しっかりとした接合部を形成することができる。加えて、Ｌ字状フック部を溝内に嵌合して係合することであることにより、ワークの突き合わせ部の高さを不本意に高くしてしまうということもない。
【図面の簡単な説明】
【図１】実施形態を示すもので、図（イ）はワークの係合前の状態を示す横断面図、図（ロ）は係合させた状態の横断面図、図（ハ）は摩擦撹拌接合の開始時期の横断面図である。
【図２】ワークの断面斜視図である。
【図３】摩擦撹拌接合に用いる回転子の一例を示すもので、図（イ）は側面図、図（ロ）は先端面図である。
【図４】従来の摩擦撹拌接合法を示すもので、図（イ）は接合中のワークの横断面図、図（ロ）は平面図である。
【符号の説明】
３…プローブ
６…第１ワーク
６ａ…厚肉部
７…第２ワーク
７ａ…厚肉部
９…溝
１０…フック部[0001]
The present invention relates to a method for joining workpieces made of metal such as aluminum by friction stir welding.
[0002]
[Prior art]
As a method for joining metal structural members such as aluminum, there is a joining method called a friction stir welding method.
[0003]
In this friction stir welding method, structural members are solid-phase bonded to each other, and a rotor (1) as shown in FIG. 3 is used as a tool. This rotor (1) is coaxially integrated with a pin-shaped friction stir probe (3) having a diameter smaller than that of the cylindrical rotor body (2) at the tip axial center portion of the cylindrical rotor body (2). It is made of steel and other materials that are hard and have excellent heat resistance.
[0004]
As shown in FIG. 4, the rotor (1) is rotated about its own axis, and the tip of the probe (3) is brought into contact with the butt boundary (53) of the workpieces (51) and (52) as shown in FIG. The contact portion is brought into contact with the pressed state, and the contact portion is softened and plasticized by the frictional heat. Then, the rotor (1) is further pressed against the workpieces (51) and (52), and the probe (3) is inserted in the thickness direction of the workpieces (51) and (52), so that the cylindrical rotor body (2) is inserted. The shoulder portion (4) at the tip of the blade is brought into contact with the workpieces (51) and (52) in a pressed state. Thereafter, the rotor (1) is moved along the abutting boundary (53) of the workpieces (51) (52) while maintaining the state. At the butt boundary where the rotor (1) passes, the surrounding materials are softened and agitated by frictional heat generated by the rotation of the rotor (1), and the shoulder (4) of the cylindrical rotor body (2) After the plastic flow so as to fill the passage groove of the probe (3) while the scattering is restricted, the heat is rapidly lost to solidify by cooling. In this way, the softening, adhesion deformation, stirring, and cooling and solidification of the material in the butting portion (53) are sequentially repeated as the rotor (1) moves, and the workpieces (51) and (52) in the butting portion (53) Are integrated with each other and sequentially joined (58).
[0005]
This friction stir welding method directly joins the workpieces (51) and (52) in a softened state without melting the material, and causes problems in terms of quality due to thermal effects and the like as in welding. Therefore, a high quality and strong joint (58) can be formed.
[0006]
[Problems to be solved by the invention]
By the way, when the edges of the workpieces (51) and (52) are merely abutted with each other, a gap is generated between them, and the rotor (1) is formed at the abutting portion of the workpieces (51) and (52) during joining. ) Due to the mechanical action caused by friction and the effect of heat due to friction, etc., and these may cause poor bonding. Therefore, various restraining jigs are used to make this gap and opening as small as possible. Has been conceived.
[0007]
However, the use of a jig not only requires the work of attaching the jig to the workpiece, but also requires the management and storage of the jig, which has the drawback of making the joining work complicated and troublesome.
[0008]
The present invention is capable of reliably preventing unintentional gaps and openings in the abutting part of the workpiece without using a jig in the background as described above, and performing the joining operation easily and efficiently. It is an object of the present invention to provide a method for joining workpieces by friction stir welding.
[0009]
[Means for Solving the Problems]
The above-described problem is a method of joining workpieces by friction stir welding in which the first workpiece and the second workpiece are abutted and the friction stir probe is caused to act on the meat of both workpieces at the abutting portion. Then, an L-shaped hook portion whose tip portion is formed into a semicircular arc-shaped curved surface that engages with each other at the abutting edge portion to prevent the opening of the abutting portion of both the workpieces is formed on both the workpieces. This is solved by a method of joining workpieces by friction stir welding, wherein the workpieces are joined together while being integrally formed and the hook portions are engaged with each other.
[0010]
That is, the friction stir welding is performed in a state where the hook portions formed at the butt edge portions of both workpieces are engaged with each other, thereby preventing an unintentional gap or opening of the butt portion of the workpiece. In addition, since the hook part is integrally formed with the butt edge of the workpiece, it is only necessary to engage the hook parts when the workpieces are abutted with each other. There is no need to perform fixture installation work, jig management and storage, and the joining work can be performed easily and efficiently.
[0011]
In the above method, it is preferable that the abutting edges of both workpieces are formed thick, and each of the hooks is formed as an L-shaped hook by providing a groove on one surface of the thick part. The butt edge of one workpiece can be overlapped with the butt edge of the other workpiece, and the L-shaped hook portion of one workpiece can be easily fitted into the groove of the other workpiece. It is possible to easily carry out the joining work of both the workpieces. Moreover, since the butt edge is formed thick, not only the formation of the L-shaped hook part is facilitated, but the thick part of the meat fills the gap in the engaging part in the friction stir welding, Thick joints are formed by preventing thickness defects at the joints. In addition, since the L-shaped hook portion is engaged and engaged in the groove, the height of the butt portion of the workpiece does not increase unintentionally.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0013]
The first embodiment shown in FIGS. 1 and 2 is a case where a butt joint is formed by friction stir welding. That is, (6) is the first workpiece, (7) is the second workpiece, and both workpieces (6) and (7) are made of ribbed flooring made of an aluminum extruded profile, and its side edges The two workpieces (6) and (7) are joined by causing the rotor (1), which is a tool for friction stir welding, to act on the butted portion.
[0014]
As shown in FIG. 1 (a), the butted edges (6a) and (7a) of the workpieces (6) and (7) are raised to one surface side and formed thick. A groove (9) extending in the edge direction is formed on the upper surface of the edge of the thick part (6a) of the first workpiece (6), and the inward L-shaped hook part (10) is formed by the groove (9). ) Is formed. The hook tip portion of the L-shaped hook portion (10) is formed to be at a position equivalent to the thickness below the groove (9) and lower than the upper surface of the thick portion (6a). Moreover, the bottom part of the groove | channel (9) and the front-end | tip part of an L-shaped hook part (10) are shape | molded by the semicircular arc-shaped curved surface with a curvature radius of about 1 mm, for example. The groove (9) and the L-shaped hook portion (10) are formed by being integrally extruded when the first workpiece (6) is extruded. By forming by extrusion, these grooves (9) and L-shaped hook portions (10) can be easily formed over the entire length of the workpiece (6).
[0015]
Also, a groove (9) extending in the edge direction is formed on the lower surface of the edge of the thick part (7a) of the second workpiece (7), and an inward L-shaped hook part (9) is formed by the groove (9). 10) is formed. The hook tip portion of the L-shaped hook portion (10) is also formed to be at a position equivalent to the thickness below the groove (9) and higher than the lower surface of the thick portion (7a). Similarly, the bottom of the groove (9) and the tip of the L-shaped hook (10) are formed into a semicircular curved surface. The groove (9) and the L-shaped hook portion (10) are also formed by being integrally extruded when the workpiece (7) is extruded.
[0016]
In this embodiment, a plurality of ribbed floors having the same structure are arranged in a parallel state to produce a butt floor, and as shown in FIG. 2, the left and right side edges of each workpiece (6) (7). The grooves (9) and (9) and the L-shaped hook portions (10) and (10) as described above are formed in the upside down direction. In addition, both the workpieces (6) and (7) are designed such that the thickness of the main body plate portion is 2.3 mm, for example, and the thickness of the thick portions (6a) and (7a) is 4 mm.
[0017]
Using the workpieces (6) and (7) as described above, the side edges are brought into contact with each other. That is, as shown in FIG. 1 (a), the side edge of the second workpiece (7) is positioned above the side edge of the first workpiece (6), and the side edge of the second workpiece (7). Is lowered so as to overlap the side edge of the first workpiece (6), and the L-shaped hook portion (10) of the second workpiece (7) is placed in the groove (9) of the first workpiece (6). Mating. As a result, the L-shaped hook portion (10) of the first workpiece (6) is also fitted into the groove (9) of the second workpiece (7), and as shown in FIG. 6) (7) is combined in a butted state that is firmly prevented from opening over its entire length. In this fitting, the bottoms of the grooves (9) and (9) and the tips of the L-shaped hooks (10) and (10) are formed into a semicircular curved surface as described above. You can go easily and smoothly. Further, in this engaged and engaged state, the thick portions (6a) and (7a) of both the workpieces (6) and (7) are continuous on the front and back surfaces due to the dimensional relationship as described above. It is prevented that the heights of the butted portions of both works (6) and (7) are increased.
[0018]
Thereafter, as shown in FIG. 1 (c), from the surface of the thick-walled portion (6a) (7a) on the protruding side to the butted portion of both workpieces (6) (7), the rotor for joining (1) is allowed to act, and both works (6) and (7) are friction stir welded. Bonding may be performed on both the front and back surfaces, or may be performed only from either one of the surfaces. The butted portions of both the workpieces (6) and (7) are engaged and coupled over the entire length thereof, and therefore there is no opening between the workpieces (6) and (7) over the entire length. Even if there is a mechanical action by the rotor (1) or the influence of heat due to friction, the butted parts of both the works (6) and (7) are not opened, and both works (6) (7) is firmly joined with good quality. Further, the gap between the L-shaped hook portions (10) and (10) and the grooves (9) and (9) is filled with the meat of the thick portions (6a) and (7a) during joining. However, the thickness of the main body portion of the workpieces (6) and (7) is not reduced and the strength of the joint portion is not reduced.
[0019]
Although the embodiment of the present invention has been described above, various modifications can be made without departing from the present invention and its technical idea. For example, in the above embodiment, the groove (9) and the hook portion (10) are formed by integral extrusion when the workpieces (6) and (7) are extruded. It may be performed by. Moreover, in the said embodiment, although the workpiece | work (6) (7) is made from the extrusion material made from aluminum, another metal may be sufficient and a rolling material etc. may be sufficient. Further, the method of the present invention is not limited to the case of joining plate-like materials, and may be widely applied to the joining of various members. Moreover, the hook part integrally provided in the butt | matching edge part of a workpiece | work is not restricted to the hook part (10) of the above specific forms, A hook part of various forms may be employ | adopted.
[0020]
【The invention's effect】
Depending on the above, the method of joining workpieces by friction stir welding according to the present invention is to perform friction stir welding in a state in which hook parts integrally formed at the butt edges of both workpieces are engaged with each other. It is possible to prevent unintentional gaps and openings in the workpiece abutting portion, and further, it is possible to perform the joining work easily and efficiently without the need for a restraining jig.
[0021]
Also, the butt edge of both workpieces is formed thick, and each hook part is formed in an L-shaped hook part by providing a groove on one surface of the thick part, The butt edge of one workpiece is overlapped with the butt edge of the other workpiece, and the L-shaped hook portion of one workpiece can be easily fitted into the groove of the other workpiece. . In addition, since the butt edge is formed thick, not only the formation of the L-shaped hook part is facilitated, but the thick part of the meat fills the gap in the engaging part in the friction stir welding, It is possible to prevent a thickness defect at the joint and form a firm joint. In addition, since the L-shaped hook portion is engaged and engaged with the groove, the height of the butted portion of the workpiece is not increased unintentionally.
[Brief description of the drawings]
1A and 1B show an embodiment, in which FIG. 1A is a cross-sectional view showing a state before engagement of a workpiece, FIG. 1B is a cross-sectional view in an engaged state, and FIG. It is a cross-sectional view of the start timing of the stir welding.
FIG. 2 is a cross-sectional perspective view of a workpiece.
FIG. 3 shows an example of a rotor used for friction stir welding, where FIG. (A) is a side view and FIG. (B) is a front end view.
4A and 4B show a conventional friction stir welding method, in which FIG. 1A is a cross-sectional view of workpieces being joined, and FIG. 4B is a plan view.
[Explanation of symbols]
3 ...
Claims (3)
両ワークに、それらの突き合わせ縁部において、互いに係合しあって両ワークの突き合わせ部の開きを阻止する、先端部が半円弧状の曲面に成形されているＬ字状のフック部が一体成形され、該フック部同士を係合させた状態で両ワークの上記接合を行うことを特徴とする摩擦撹拌接合によるワークの接合方法。The first workpiece and the second workpiece are abutted, the friction stir probe is allowed to act on the meat of both workpieces at the abutting portion, and the workpiece is joined by friction agitation welding to join both workpieces,
An L-shaped hook part, which is formed into a semicircular arc-shaped curved surface, engages with each other at the abutting edge to prevent the abutting part from opening. And joining the workpieces in a state where the hook portions are engaged with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18112097A JP3978257B2 (en) | 1997-07-07 | 1997-07-07 | Workpiece joining method by friction stir welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18112097A JP3978257B2 (en) | 1997-07-07 | 1997-07-07 | Workpiece joining method by friction stir welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1128583A JPH1128583A (en) | 1999-02-02 |
| JP3978257B2 true JP3978257B2 (en) | 2007-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18112097A Expired - Fee Related JP3978257B2 (en) | 1997-07-07 | 1997-07-07 | Workpiece joining method by friction stir welding |
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| JP (1) | JP3978257B2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3709552B2 (en) | 1999-09-03 | 2005-10-26 | 株式会社日立製作所 | Plasma processing apparatus and plasma processing method |
| JP3459210B2 (en) | 1999-11-24 | 2003-10-20 | 株式会社日立製作所 | Friction stir welding method |
| US6352193B1 (en) | 2000-08-01 | 2002-03-05 | General Electric Company | Apparatus for joining electrically conductive materials |
| JP2002086281A (en) | 2000-09-13 | 2002-03-26 | Hitachi Ltd | Friction stir welding method |
| JP3553012B2 (en) * | 2000-11-17 | 2004-08-11 | 株式会社日立製作所 | Friction stir welding method |
| JP4271953B2 (en) * | 2003-01-21 | 2009-06-03 | 昭和電工株式会社 | Manufacturing method of joint and friction stir welding apparatus |
| DE10303623B4 (en) * | 2003-01-30 | 2005-08-04 | Gkss-Forschungszentrum Geesthacht Gmbh | Method and device for connecting at least two adjoining workpieces by the method of friction stir welding |
| JP2009221543A (en) * | 2008-03-17 | 2009-10-01 | Hitachi Cable Ltd | Sputtering target material |
| JP5320439B2 (en) * | 2011-06-14 | 2013-10-23 | 株式会社日立製作所 | High corrosion resistance plant equipment |
| JP5492235B2 (en) * | 2011-06-21 | 2014-05-14 | 日本軽金属株式会社 | Double skin panel assembly and friction stir welding method for double skin panel |
| CN103949768B (en) * | 2014-05-05 | 2016-02-03 | 西北工业大学 | A kind of method eliminating friction stir spot welding Hook defect |
| CN109702404B (en) * | 2017-10-26 | 2021-06-18 | 晟通科技集团有限公司 | Aluminum template welding rib equipment |
| CN107876966B (en) * | 2017-12-19 | 2019-02-01 | 沈阳航空航天大学 | It is a kind of to reduce Friction Stir Welding to the welding method of lap joint defect |
| DE102018211574B4 (en) * | 2018-07-12 | 2022-06-30 | Thyssenkrupp Ag | workpiece group |
| CN110645036A (en) * | 2019-11-05 | 2020-01-03 | 河北充填采矿技术有限公司 | Hydraulic support |
| US11322037B2 (en) * | 2019-11-25 | 2022-05-03 | Illinois Tool Works Inc. | Weld training simulations using mobile devices, modular workpieces, and simulated welding equipment |
-
1997
- 1997-07-07 JP JP18112097A patent/JP3978257B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JPH1128583A (en) | 1999-02-02 |
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