JP4414035B2 - Friction stir welding method - Google Patents
Friction stir welding method Download PDFInfo
- Publication number
- JP4414035B2 JP4414035B2 JP34890199A JP34890199A JP4414035B2 JP 4414035 B2 JP4414035 B2 JP 4414035B2 JP 34890199 A JP34890199 A JP 34890199A JP 34890199 A JP34890199 A JP 34890199A JP 4414035 B2 JP4414035 B2 JP 4414035B2
- Authority
- JP
- Japan
- Prior art keywords
- joining
- joining member
- receiving
- abutting
- receiving jig
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- B23K20/126—Workpiece support, i.e. backing or clamping
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/045—Hollow panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、突合せ状に配置した2個の接合部材の突合せ部を接合する際に用いられる摩擦撹拌接合法に関する。
【0002】
【従来の技術】
2個の接合部材を接合一体化する摩擦撹拌接合は、固相接合の一種であるため、熱歪みによる変形や割れを生じ難いという利点を有し、近年、溶接やロウ付けに代わる新しい接合手段として用いられてきている。
【0003】
図11は、突合せ状に配置した2個の板状の接合部材(100A)(100B)の突合せ部(T')を摩擦撹拌接合により接合する場合を示している。同図に示した各接合部材(100A)(100B)は、長さ方向に延びているものであって、同図において右側の接合部材(100A)の幅方向の端部と左側の接合部材(100B)の幅方向の端部とが突き合わされて配置されている。
【0004】
同図において、(170)は摩擦撹拌接合用の接合工具である。この接合工具(170)は、径大の円柱状回転子(171)と、該回転子(171)の端面(171a)軸線上に一体に突設された径小のピン状プローブ(172)とからなる接合ヘッド(D')を備えたものであって、両接合部材(100A)(100B)の表面側に配置されている。この接合工具(170)を用いて突合せ部(T')を接合する場合には、接合工具(170)のプローブ(172)を回転させながら突合せ部(T')に挿入する。そして、プローブ(172)を挿入状態で突合せ部(T')に沿って接合部材に対して相対的に移動させる。
【0005】
プローブ(172)の回転により発生する摩擦熱により、プローブ(172)との接触部及びその近傍において両接合部材(100A)(100B)は軟化し、且つ該軟化部がプローブ(172)の回転力を受けて撹拌されるとともに、該軟化撹拌部がプローブ(172)の進行圧を受けてプローブの通過溝を埋めるように塑性流動したのち、摩擦熱を急速に失って冷却固化される。この現象がプローブ(172)の移動に伴って順次繰り返されていき、最終的に突合せ部(T')が接合されて両接合部材(100A)(100B)が一体化される。
【0006】
この摩擦撹拌接合の際、摩擦熱により軟化した軟化部がプローブ(172)の挿入圧及び進行圧を受けて突合せ部(T')の裏面側に膨出してしまう不具合を防止するために、突合せ部(T')の裏面には、同図に示すように、帯板状の受け治具(130)が該突合せ部(T')を跨ぐ態様にして突合せ部(T')に沿って装着されている。この受け治具(130)は、平坦面からなる受け部(131)を備えている。そして、この受け治具(130)が突合せ部(T')の裏面に装着された状態において、受け部(131)が接合工具(170)のプローブ(172)に対向する態様にして突合せ部(T')の裏面に略面接触状態に当接されている。
【0007】
さらに、接合工具(170)のプローブ(172)の挿入圧及び進行圧を受けて突合せ部(T')が開いてしまう不具合を防止するために、両接合部材(100A)(100B)には、該両接合部材を突合せ状態に保持するための保持治具(150)が装着されている。この保持治具(150)は、左右一対の係止片(151)(151)と、両係止片(151)(151)を連結するとともに両端部に雄ネジ(152a)が形成された連結杆(152)と、各係止片(151)の位置を固定する一対の止めナット(153)(153)とを備えている。そして、この保持治具(150)は、突合せ状に配置した2個の接合部材(100A)(100B)を係止片(151)(151)にて左右から挟み付け、これにより両接合部材(100A)(100B)を突合せ状態に保持している。
【0008】
【発明が解決しようとする課題】
而して、上記の保持治具(150)を用いて両接合部材(100A)(100B)を突合せ状態に保持するためには、保持治具(150)として、左右の係止片(151)(151)間の寸法が各接合部材(100A)(100B)の幅寸法(H1')(H2')同士を足した長さのものを用いなければならない。このため、各接合部材(100A)(100B)の幅寸法(H1')(H2')が大寸である場合、例えば各接合部材(100A)(100B)の幅寸法(H1')(H2')がともに400mmである場合には、保持治具(150)として、左右の係止片(151)(151)間の寸法が少なくとも800mmのものを用いなければならない。
【0009】
このように従来法では、幅広の接合部材(100A)(100B)を突合せ状態に保持する場合には、大型の保持治具(151)を用いる必要があり、このため保持治具(151)の組立作業や装着作業が面倒であり、接合作業能率が悪かった。
【0010】
さらに、図12(a)及び(b)に示すように、3個以上の接合部材(100A)(100B)(100C)を接合一体化して最終的に幅広の突合せ接合品を製造しようとする場合には、保持治具(150)として、左右の係止片(151)(151)間の寸法が製造段階の途中で得られる各突合せ接合品の幅寸法に対応する長さを有するものを用いなければならないので、様々なサイズの保持治具(150)(150')…を準備しておかなければならず、この結果、突合せ接合品の製造コストがアップするし、保持治具(150)の組立作業や装着作業が煩雑になるという難点もあった。
【0011】
この発明は、上記のような技術背景に鑑みてなされたもので、その目的は、突合せ状に配置した2個の接合部材を突合せ状態に作業性良く保持することができて、これにより接合作業能率を向上させうる摩擦撹拌接合法を提供することにある。
【0012】
【課題を解決するための手段】
上記目的を達成するため、この発明は、第1接合部材の幅方向の端部と第2接合部材の幅方向の端部とを突き合わせてなる突合せ部を、両接合部材の表面側に配置した接合工具の接合ヘッドにより接合する摩擦撹拌接合法であって、裏面の幅方向の一部に、凸部又は凹部からなる被係合部が長さ方向に沿って形成された第1接合部材及び第2接合部材を準備するとともに、各接合部材の前記凸部が嵌合される凹部又は各接合部材の前記凹部内に嵌合される凸部からなる係合部を備えるとともに、突合せ部の裏面を受ける受け治具を用い、第1接合部材の幅方向の端部と第2接合部材の幅方向の端部とを突き合わせてなる突合せ部の裏面を、前記受け治具で受けるとともに、各接合部材の被係合部と受け治具の係合部とを嵌合係合させることにより、両接合部材を突合せ状態に保持し、この状態で、突合せ部を接合することを特徴としている。
【0013】
この摩擦撹拌接合法では、突合せ状に配置した第1接合部材と第2接合部材とは、摩擦撹拌接合の際に、突合せ部の裏面が受け治具で受けられ、これにより軟化部の突合せ部裏面側への膨出が防止される。さらに、両接合部材は、摩擦撹拌接合の際に、各接合部材の裏面に形成された被係合部と受け治具の係合部とが嵌合係合され、これにより各接合部材の突合せ方向の反対方向への移動が規制されて両接合部材が突合せ状態に保持され、もって突合せ部の開きが防止される。而して、各接合部材において、受け治具の係合部に嵌合される被係合部は、接合部材の裏面の一部に形成されているので、例えば被係合部を接合部材の裏面の幅方向の中間部に形成することにより、受け治具として、一対の係合部間の寸法が従来の保持治具よりも狭いものを用いることができるようになって、受け治具の小型化が図られる。この結果、受け治具を作業能率良く装着することができるようになり、もって接合作業能率が向上する。
【0014】
また、この発明において、各接合部材の前記凸部における突合せ方向反対側の側面部と、受け治具の前記凹部における接合部材の突合せ方向反対側の側面部とのうち少なくとも一方は、凸部と凹部との嵌合状態のもとで、突合せ部の裏面が受け治具と密接する方向に押圧力が作用したときに、両接合部材に突合せ方向の力が作用するように形成された案内面を有していることが望ましい。
【0015】
これによれば、例えば、突合せ部の表面が、接合ヘッドの一部(プローブ)の突合せ部への挿入時の押付け圧を受けることにより、あるいは更に接合ヘッドの他の一部(回転子の端面)の押付け圧を受けることにより、両接合部材が突合せ方向の力を受けて突合せ方向に移動しようとする結果、各接合部材の突き合わされた端部同士が強く密着するようになる。したがって、もし仮に、各接合部材の突き合わされる端部が長さ方向に湾曲している等して、端部同士を突き合わせると該突合せ部に隙間が形成されてしまう場合であっても、これによれば、突合せ部の隙間を消滅させ得て、この状態で突合せ部を接合することができるようになる。この結果、突合せ部の隙間内の空気が接合時に巻き込まれて接合部にボイド等の接合欠陥が発生するといった不具合が防止され、もって高品質の突合せ接合品が得られるようになる。
【0016】
また、この発明において、各接合部材の前記凹部における突合せ方向側の側面部と、受け治具の前記凸部における接合部材の突合せ方向側の側面部とのうち少なくとも一方が、凹部と凸部との嵌合状態のもとで、突合せ部の裏面が受け治具と密接する方向に押圧力が作用したときに、両接合部材に突合せ方向の力が作用するように形成された案内面を有している場合でも、上記と同様の作用を奏し得る。
【0017】
また、この発明において、前記受け治具は、所定長さを有し且つ表面に前記係合部が長さ方向に沿って形成されるとともに、該係合部が被係合部に沿って嵌合される帯板状のものである場合には、この受け治具を突合せ部の裏面に装着することにより、係合部が被係合部に該被係合部に沿って嵌合係合される。この結果、接合操作を連続して行うことができるようになり、もって接合作業能率が向上する。
【0018】
また、この発明において、前記受け治具は、周面に前記係合部が全周に亘って形成された回転可能なローラからなる場合には、次のような作用を奏する。つまり、このローラが回転自在なものである場合には、両接合部材が接合工具の接合ヘッドに対して相対的に移動するのに伴って、このローラが、その周面を突合せ部の裏面に当接させた状態で、且つその係合部を被係合部に嵌合させた状態で、回転される。一方、このローラが回転駆動するものである場合には、このローラが、その周面を突合せ部の裏面に当接させた状態で、且つその係合部を被係合部に嵌合させた状態で回転駆動し、これにより両接合部材が移動される。いずれの場合にも、接合操作を連続して行うことができるようになり、もって接合作業能率が向上する。
【0019】
【発明の実施の形態】
次に、この発明の実施形態を図面に基づいて説明する。図1〜図6は、この発明の第1実施形態、図7はこの発明の第2実施形態、図8及び図9はこの発明の第3実施形態を示している。
【0020】
図1に示すように、この発明の第1実施形態においては、2個の接合部材(10A)(10B)は、ともに一定幅を有する長尺な板状のアルミニウム又はその合金材からなるものであり、互いに同形・同寸に形成されている。そして、同図において右側の接合部材(第1接合部材、10A)の幅方向の端部(11)と左側の接合部材(第2接合部材、10B)の幅方向の端部(11)とが突き合わされて配置されている。同図において、(T)は、右側の接合部材(10A)の幅方向の端部(11)と左側の接合部材(10B)の幅方向の端部(11)とを突き合わせてなる突合せ部である。また、(H1)は第1接合部材(10A)の幅寸法、(H2)は第2接合部材(10B)の幅寸法である。この第1実施形態では、第1接合部材(10A)の幅寸法(H1)と第2接合部材(10B)の幅寸法(H2)は、ともに例えば400mm、あるいはこれ以上になっている。
【0021】
突合せ部(T)の裏面には、該両接合部材(10A)(10B)の突合せ部(T)における長さ寸法と略同じ長さ寸法を有する帯板状の金属製受け治具(30)が、突合せ部(T)を跨ぐ態様にして該突合せ部(T)に沿って装着されている。この受け治具(30)は、突合せ部(T)の裏面を受けるためのものである。
【0022】
図6(a)に示すように、この受け治具(30)の表面の幅方向(同図において左右方向)の中間部には、後記する接合工具(57)のプローブ(59)に対向する態様にして突合せ部(T)の裏面に略面接触状態に当接される受け部(31)が長さ方向に沿って形成されている。この受け部(31)は平坦面からなる。
【0023】
さらに、この受け治具(30)の表面における前記受け部(31)の左右両側には、係合部(Y)としての左右一対の凹部(32)(32)が長さ方向に沿って形成されている。各凹部(32)の二つの側面部のうち接合部材の突合せ方向(ハ)の反対側の側面部(32a)は、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向(ニ)に対して、受け部(31)側(即ち、接合部材の突合せ方向側)に傾斜した傾斜面からなり、この側面部(32a)の全体が、案内面(S)として機能している。
【0024】
一方、同図に示すように、各接合部材(10A)(10B)の裏面の幅方向の中間部における突き合わされる端部(11)の近傍には、それぞれ被係合部(X)としての凸部(12)が長さ方向に沿って一体形成されている。各凸部(12)の二つの側面部のうち接合部材の突合せ方向(ハ)の反対側の側面部(12a)は、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向(ニ)に対して、突き合わされる端部(11)側に傾斜した傾斜面からなり、この側面部(12a)の全体が、案内面(S)として機能している。この側面部(12a)の傾斜角は、前記受け治具(30)の凹部(32)の側面部(32a)の傾斜角と略等しくなるように設定されている。
【0025】
次に、受け治具(30)を突合せ部(T)の裏面に装着する手順を説明する。
【0026】
ます、図6(a)に示すように、一方の接合部材(10A)の幅方向の端部(11)と他方の接合部材(10B)の幅方向の端部(11)とを突き合わせる。この実施形態では、両接合部材(10A)(10B)を突き合わせた状態において、同図に示すように、突合せ部(T)には小さな隙間が形成されている。この隙間は、各接合部材(10A)(10B)の突き合わされる端部(11)が長さ方向に湾曲しているため、あるいは突き合わされる端部(11)に加工痕からなる凹凸が形成されていること等が原因で発生したものである。
【0027】
次いで、受け治具(30)を移動させて該受け治具(30)を突合せ部(T)の裏面に装着する。あるいは、両接合部材(10A)(10B)を移動させて突合せ部(T)の裏面に受け治具(30)を装着する。ここでは説明の便宜上、受け治具(30)を移動させて該受け治具(30)を突合せ部(T)の裏面に装着することにする。
【0028】
この受け治具(30)の装着操作の途中で、該受け治具(30)の各凹部(32)(32)内に各接合部材(10A)(10B)の凸部(12)が嵌合されるとともに、各凸部(12)の側面部(12a)に各凹部(32)の側面部(32a)が略面接触状態で当接する。
【0029】
受け治具(30)を更に移動させることにより、各凹部(32)の側面部(32a)が凸部(12)の側面部(12a)を滑りながら該凹部(32)が接合部材(10A)(10B)の裏面に向かって移動する。この移動に伴い、各凹部(32)の側面部(32a)が凸部(12)を接合部材(10A)(10B)の突合せ方向(ハ)(ハ)に押圧し、つまり各接合部材(10A)(10B)に突合せ方向(ハ)(ハ)の力が作用する。この突合せ方向(ハ)(ハ)の力を受けて各接合部材(10A)(10B)がそれぞれ突合せ方向(ハ)(ハ)に移動する。この移動動作により、接合部材(10A)(10B)の突き合わされた端部(11)(11)同士が密着し、もって突合せ部(T)に形成された隙間が消滅する。受け治具(30)を更に移動させ、図6(b)に示すように受け部(31)が突合せ部(T)の裏面に当接したとき、該受け治具(30)の突合せ部(T)裏面への装着操作及び凹部(32)の凸部(12)への嵌合操作が完了する。
【0030】
この受け治具(30)の装着状態において、突合せ部(T)の裏面には受け治具(30)の受け部(31)が突合せ部(T)に沿って略面接触状態で当接している。各接合部材(10A)(10B)の突き合わされた端部(11)(11)同士は、相互圧接状態になっている。更に、各凸部(12)と凹部(32)とは、凹部(32)内に凸部(12)がきつく嵌合されて両者が係合されることによりこの嵌合状態が解除されないよう保持されている。つまり、各凸部(12)の側面部(12a)と凹部(32)の側面部(32a)とが圧接してこれに伴う摩擦力によって嵌合状態が解除されないよう保持されている。この結果、各接合部材(10A)(10B)の突合せ方向(ハ)の反対方向への移動が規制され、もって両接合部材(10A)(10B)は突合せ状態に保持される。
【0031】
次いで、両接合部材(10A)(10B)を突合せ状態に保持したままで受け治具(30)と一緒に、図1〜図5に示した摩擦撹拌接合装置(50)にセットする。
【0032】
ここで、この摩擦撹拌接合装置(50)の構成を説明する。
【0033】
図1において、(57)は摩擦撹拌接合用の接合工具である。この接合工具(27)は、径大の円柱状回転子(58)と、該回転子(58)の端面(58a)軸線上に突設された径小のピン状プローブ(59)とからなる接合ヘッド(D)を備えている。前記回転子(58)及びプローブ(59)は、接合部材(10A)(10B)よりも硬質で且つ接合時に発生する摩擦熱に耐えうる耐熱材料から形成されている。また、プローブ(59)の周面には、軟化部撹拌用の凸部(図示せず)が形成されている。そして、この接合工具(57)は、突合せ状に配置した両接合部材(10A)(10B)の表面側にそのプローブ(59)を下方に向ける態様にして配置されている。
【0034】
(55)は受けローラである。この受けローラ(55)は、図2に示すように、前記接合工具(57)のプローブ(59)と所定隙間をおいて両接合部材(10A)(10B)の裏面側に、その周面がプローブ(59)に対向する態様にして配置されている。この受けローラ(55)は、回転駆動可能なものであって、図示しない駆動装置を備えており、両接合部材(10A)(10B)をその長さ方向の一方側(矢印ロの方向側)に移動させる駆動ローラとしても機能するようになっている。なお、この実施形態において、受けローラ(55)は、回転自在なものであっても良い。
【0035】
(51)は、両接合部材(10A)(10B)を所定方向(ロ)に移動させる第1駆動ローラである。この第1駆動ローラ(51)は、接合部材(10A)(10B)の移動方向(ロ)における受けローラ(55)の後方で両接合部材(10A)(10B)の裏面側に配置されている。(53)は、同じく両接合部材(10A)(10B)を所定方向(ロ)に移動させる第2駆動ローラである。この第2駆動ローラ(53)は、接合部材(10A)(10B)の移動方向(ロ)における受けローラ(55)の前方で両接合部材(10A)(10B)の裏面側に配置されている。
【0036】
(52)(54)は、左右一対の回転自在な押さえローラである。これら押さえローラ(52)(54)は、両接合部材(10A)(10B)の表面側における各駆動ローラ(51)(53)の上方に所定間隔をおいて配置されている。各押さえローラ(52)(54)は、両接合部材(10A)(10B)又は両接合部材(10A)(10B)を突合せ状態に保持している受け治具(30)を駆動ローラ(51)(53)の周面に押し付けることにより、両接合部材(10A)(10B)に移動方向(ロ)の駆動力を付与するためのものである。
【0037】
而して、前記受け治具(30)により突合せ状態に保持された両接合部材(10A)(10B)の突合せ部(T)は、上記摩擦撹拌接合装置(50)により、次のようにして接合される。
【0038】
まず、接合工具(57)のプローブ(59)を上方離間位置に待機させた状態で、両接合部材(10A)(10B)の長さ方向の一端部を受け治具(30)と一緒に、回転駆動している第1駆動ローラ(51)と押さえローラ(52)との間に通す。
【0039】
これにより、両接合部材(10A)(10B)が押さえローラ(52)の押付け圧を受けるから、該両接合部材(10A)(10B)を突合せ状態に保持している受け治具(30)が第1駆動ローラ(51)の周面に押し付けられ、両接合部材(10A)(10B)に該第1駆動ローラ(51)から移動方向(ロ)の駆動力が付与される。この駆動力を受けて両接合部材(10A)(10B)が突合せ状態のままで受け治具(30)と一緒に、受けローラ(55)とプローブ(59)との間に向かって移動する。また、図3(b)に示すように、この押さえローラ(52)の押付け圧を両接合部材(10A)(10B)が受けることにより、両接合部材(10A)(10B)が、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向に移動しようとし、この移動動作により、各接合部材(10A)(10B)の凸部(12)が受け治具(30)の凹部(32)の側面部(32a)を滑り、これにより各接合部材(10A)(10B)に突合せ方向(ハ)(ハ)の力が作用するから、この突合せ方向(ハ)(ハ)の力を受けて該各接合部材(10A)(10B)が突合せ方向(ハ)(ハ)に移動しようとする結果、突き合わされた端部(11)(11)同士が強く密着する。
【0040】
両接合部材(10A)(10B)の突合せ部(T)の接合開始予定位置が受けローラ(55)の上方に到達したとき、両接合部材(10A)(10B)の移動を一旦停止する。そして、プローブ(59)を回転させながら下降させる。プローブ(59)の先端が突合せ部(T)の表面に接触すると、該接触部は摩擦熱によって軟化するため、さらにプローブ(59)を下降させて該プローブ(59)を突合せ部(T)の表面に押し付けて、該プローブ(59)を突合せ部(T)に受け治具(30)の受け部(31)に対向させる態様にして挿入するとともに、回転子(58)の端面(58a)を突合せ部(T)の表面に押し付ける。この状態で回転子(58)及びプローブ(59)の位置を固定する。回転子(58)の端面(58a)を突合せ部(T)の表面に押し付けることにより、摩擦熱により軟化した軟化部の飛散を防止し得て接合強度の高い接合部(W)を形成することができるようになるし、表面が平坦な接合部(W)を形成することができるようになる。
【0041】
また、図4(b)に示すように、突合せ部(T)の表面が、接合工具(57)のプローブ(59)の突合せ部(T)への挿入時の押付け圧を受けることにより、あるいは更に接合工具(57)の回転子(58)の端面(58a)の押付け圧(ホ)を受けることにより、両接合部材(10A)(10B)が、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向に移動しようとし、この移動動作により、各接合部材(10A)(10B)の凸部(12)が受け治具(30)の凹部(32)の側面部(32a)を滑り、これにより各接合部材(10A)(10B)に突合せ方向(ハ)(ハ)の力が作用するから、この突合せ方向(ハ)(ハ)の力を受けて該各両接合部材(10A)(10B)が突合せ方向(ハ)(ハ)に移動しようとする結果、突き合わされた端部(11)(11)同士が強く密着する。
【0042】
また、接合工具(57)は、図2に示すように、両接合部材(10A)(10B)の移動方向(ロ)側に僅かに傾斜して配置されており、このため、プローブ(59)を突合せ部(T)に挿入した状態において、回転子(58)の端面(58a)における両接合部材(10A)(10B)の移動方向(ロ)側の部分が、突合せ部(T)の表面に圧接するとともに、回転子(58)の端面(58a)における両接合部材(10A)(10B)の移動方向反対側の部分が、突合せ部(T)の表面から僅かに浮き上がった状態となる。なお、プローブ(59)を予め下降させておき、該プローブ(59)と受けローラ(55)との間に両接合部材(10A)(10B)を強制的に通すことにより、プローブ(59)を両接合部材(10A)(10B)の移動方向前端部から突合せ部(T)にもぐり込ませてプローブ(59)を突合せ部(T)に挿入しても良い。
【0043】
次に受けローラ(55)及び第1駆動ローラ(51)を再駆動させる。突合せ部(T)にプローブ(59)が挿入された両接合部材(10A)(10B)は、受けローラ(55)から付与された駆動力と第1駆動ローラ(51)から付与された駆動力とによって、突合せ部(T)が順次プローブ(59)を通過するように移動しながら、突合せ状態のままで受け治具(30)と一緒に、回転駆動している第2駆動ローラ(53)と押さえローラ(54)との間に通されていく。
【0044】
このように、突合せ部(T)が順次プローブ(59)を通過するように両接合部材(10A)(10B)が移動されることにより、両接合部材(10A)(10B)はプローブ(59)の通過部分において即ち突合せ部(T)の全域に亘って接合されて一体化される。すなわち、プローブ(59)の回転により発生する摩擦熱、あるいは更に回転子(58)の端面(58a)と突合せ部(T)の表面との摺動に伴い発生する摩擦熱により、プローブ(59)との接触部及びその近傍において両接合部材(10A)(10B)は軟化し、且つ該軟化部がプローブ(59)の回転力を受けて撹拌されるとともに、該軟化撹拌部がプローブ(59)の進行圧を受けてプローブ(59)の通過溝を埋めるように塑性流動したのち、摩擦熱を急速に失って冷却固化される。この現象が両接合部材(10A)(10B)の移動に伴って順次繰り返されていき、最終的に突合せ部(T)がその全域に亘って接合されて両接合部材(10A)(10B)が一体化される。
【0045】
而して、一般に、プローブ(59)を突合せ部(T)に挿入すると、突合せ部(T)はプローブ(59)の挿入圧を受けて左右方向に開こうとし、またプローブ(59)を突合せ部(T)に挿入した状態で両接合部材(10A)(10B)を移動させると、突合せ部(T)はプローブ(59)を通過する際に左右方向に開こうとする。しかしながら、この摩擦撹拌接合法によれば、各接合部材(10A)(10B)の凸部(12)と受け治具(30)の凹部(32)とが嵌合係合されて各接合部材(10A)(10B)の突合せ方向の反対方向への移動が規制されているから、突合せ部(T)は開かず、突合せ部(T)に隙間が発生しない。したがって、この摩擦撹拌接合法によれば、突合せ部(T)に隙間が発生していない状態で、換言すれば、突き合わされた端部(11)(11)同士が密着した状態で、突合せ部(T)が接合されることになり、このため、突合せ部(T)の隙間内の空気が接合時に巻き込まれて接合部(W)にボイド等の接合欠陥が発生する不具合が防止される。
【0046】
さらに、突合せ部(T)の裏面が受け治具(30)の受け部(31)で受けられているので、摩擦熱により軟化した軟化部が突合せ部(T)の裏面側に膨出する不具合が発生しない。したがって、接合部(W)の裏面が平坦状に形成される。
【0047】
以上のように、この摩擦撹拌接合法によれば、接合部(W)にボイドが発生しておらず、且つ接合部(W)の裏面が平坦状に形成されているといった高品質の幅広の突合せ接合品が得られる。
【0048】
さらに、この摩擦撹拌接合法によれば、両接合部材(10A)(10B)を突合せ状態に保持するために、受け治具(30)として、一対の凹部(32)(32)間の寸法が、突合せ状に配置した接合部材(10A)(10B)の凸部(12)(12)間の距離に対応するように設定されているものを用いれば良いので、受け治具(30)の小型化を図ることができる。このため、受け治具(30)を作業能率良く装着することができるようになり、もって接合作業能率が向上する。さらに、上述したように、受け治具(30)の突合せ部(T)裏面への装着操作を行うことにより、凹部(32)と凸部(12)とが嵌合係合して両接合部材(10A)(10B)が突合せ状態に保持されるから、受け治具(30)の突合せ部(T)裏面への装着操作と、凹部(32)と凸部(12)との嵌合操作とを別々に行う必要がなく、二つの操作を同時に行うことができるという利点がある。
【0049】
なお、この摩擦撹拌接合法において、必ずしも受け治具(30)を突合せ部(T)の裏面に装着した後で両接合部材(10A)(10B)を上記摩擦撹拌接合装置(50)にセットする必要はなく、突合せ状態に配置した両接合部材(10A)(10B)を第1駆動ローラ(51)と押さえローラ(52)との間に通しながら、受け治具(30)を突合せ部(T)の裏面に装着しても良い。
【0050】
また、この摩擦撹拌接合法において、必ずしも両方の接合部材(10A)(10B)の凸部(12)(12)の側面部(12a)(12a)がともに案内面(S)を有する必要はなく、いずれか一方の接合部材の凸部の側面部のみが案内面を有するものであっても良い。また、必ずしも受け治具(30)の左右一対の凹部(32)(32)の側面部(32a)(32a)がともに案内面(S)を有している必要はなく、いずれか一方の凹部の側面部のみが案内面を有するものであっても良い。
【0051】
また、各接合部材(10A)(10B)の突き合わされる端部(11)の裏面に、凸部(12)が長さ方向に沿って形成されていても良い。
【0052】
図7に示す第2実施形態の摩擦撹拌接合法では、各接合部材(10A)(10B)の裏面の幅方向中間部における突き合わされる端部(11)の近傍には、それぞれ被係合部(X)としての凹部(14)が長さ方向に沿って形成されている。各凹部(14)の二つの側面部のうち接合部材の突合せ方向(ハ)側の側面部(14a)は、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向に対して、突き合わされる端部(11)側に傾斜した傾斜面からなり、この側面部(14a)の全体が、案内面(S)として機能している。
【0053】
一方、受け治具(30)の表面における受け部(31)の左右両側には、係合部(Y)としての左右一対の凸部(34)が長さ方向に沿って一体形成されている。各凸部(34)の二つの側面部のうち接合部材の突合せ方向側の側面部(34a)は、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向に対して、受け部(31)側に傾斜した傾斜面からなり、この側面部(34a)の全体が、案内面(S)として機能している。
【0054】
この受け治具(30)が両接合部材(10A)(10B)の裏面に装着された状態において、接合部材(10A)(10B)の突き合わされた端部(11)(11)同士は、上記第1実施形態のときと同様に、相互圧接状態になっている。更に、各凹部(14)と凸部(34)とは、凹部(14)内に凸部(34)がきつく嵌合されて両者が係合されることによりこの嵌合状態が解除されないよう保持されており、つまり各凹部(14)の側面部(14a)と凸部(34)の側面部(34a)とが圧接してこれに伴う摩擦力によって嵌合状態が解除されないよう保持されている。したがって、各接合部材(10A)(10B)の突合せ方向の反対方向への移動が規制され、もって両接合部材(10A)(10B)は突合せ状態に保持されている。
【0055】
この第2実施形態の撹拌接合接合法は、上記第1実施形態と同じ手順で遂行され、上記第1実施形態と同じ利点を有している。
【0056】
図8及び図9に示す第3実施形態の摩擦撹拌接合法おいては、2個の接合部材(10A)(10B)は、上記第1実施形態のものと同一構成になっている。
【0057】
一方、この第3実施形態の摩擦撹拌接合法では、図9に示すように、摩擦撹拌接合装置(50)の受けローラ(55)が、受け治具(30)として用いられている。つまり、この受けローラ(55)の周面には、受け部(31)と、該受け部(31)の左右両側に係合部(Y)としての左右一対の凹部(32)(32)とが全周に亘って形成されている。各凹部(32)の二つの側面部のうち接合部材の突合せ方向の反対側の側面部(32a)は、突合せ部(T)の裏面が受け治具(30)の受け部(31)と密接する方向に対して、受け部(31)側に傾いたテーパ面からなる。この側面部(32a)の全体が、案内面(S)として機能している。
【0058】
さらに、この摩擦撹拌接合装置(50)においては、図8に示すように、第1駆動ローラ(51)の周面には、補助受け部(35)と、該補助受け部(35)の左右両側に係合部(Y)としての左右一対の凹部(32)(32)とが全周に亘って形成されている。また、図示していないが、第2駆動ローラ(53)は、この第1駆動ローラ(51)と同一構成になっている。各駆動ローラ(51)(53)の補助受け部(35)及び凹部(32)は、上記受けローラ(55)と同一構成である。
【0059】
この摩擦撹拌接合法においては、突合せ状に配置した2個の接合部材(10A)(10A)を、第1駆動ローラ(51)と押さえローラ(52)との間に通すことにより(図8参照)、両接合部材(10A)(10B)が押さえローラ(52)の押圧力を受けるから、該両接合部材(10A)(10B)が第1駆動ローラ(51)の周面に押し付けられて、第1駆動ローラ(51)から移動方向の駆動力が付与される。同時に、押さえローラ(52)の押付け圧を両接合部材(10A)(10B)が受けることにより、両接合部材(10A)(10B)が、突合せ部(T)の裏面が第1駆動ローラ(51)の補助受け部(35)と密接する方向に移動する。この移動動作により、突合せ部(T)の裏面と第1駆動ローラ(51)の補助受け部(35)とが当接するとともに、各接合部材(10A)(10B)の凸部(12)と第1駆動ローラ(51)の凹部(32)とが嵌合係合する。この結果、両接合部材(10A)(10B)が突合せ状態に保持される。
【0060】
この第1駆動ローラ(51)により突合せ状態に保持された両接合部材(10A)(10B)は、受けローラ(55)とプローブ(59)との間を通過する際にも(図9参照)、突合せ状態に保持される。すなわち、突合せ部(T)の表面が、接合工具(57)のプローブ(59)の突合せ部(T)への挿入時の押付け圧を受けることにより、あるいは更に接合工具(57)の回転子(58)の端面(58a)の押付け圧を受けることにより、両接合部材(10A)(10B)が、突合せ部(T)の裏面が受けローラ(55)の受け部(31)と密接する方向に移動する。この移動動作により、突合せ部(T)の裏面と受け部(31)とが当接して該突合せ部(T)の裏面が受け部(31)で受けられるとともに、各接合部材(10A)(10B)の凸部(12)と受けローラ(55)の凹部(32)とが嵌合係合する。この結果、両接合部材(10A)(10B)は突合せ状態に保持される。加えて、この移動動作により、各接合部材(10A)(10B)の凸部(12)が受けローラ(30)の凹部(32)の側面部(32a)を滑り、これにより各接合部材(10A)(10B)に突合せ方向の力が作用するから、この突合せ方向の力を受けて該各接合部材(10A)(10B)が突合せ方向に移動しようとする結果、突き合わされた端部同士が強く密着する。
【0061】
さらに、両接合部材(10A)(10B)は、第2駆動ローラと押さえローラとの間を通過する際にも、図示していないが、突合せ部(T)の裏面と第2駆動ローラの補助受け部とが当接して突合せ部(T)の裏面が補助受け部で受けられるとともに、各接合部材(10A)(10B)の凸部(12a)と凹部(32)とが嵌合することにより、突合せ状態に保持される。
【0062】
この状態で、受けローラ(55)及び各駆動ローラ(51)(53)が、その受け部(31)及び補助受け部(35)を突合せ部(T)の裏面に当接させた状態で且つその凹部(32)を各接合部材(10A)(10B)の凸部(12)に嵌合させた状態で定位置で回転駆動する。これにより、突合せ部(T)が順次プローブ(59)を通過するように両接合部材(10A)(10B)が所定方向に移動され、もって突合せ部(T)が接合されて両接合部材(10A)(10B)が一体化される。
【0063】
なお、この第3実施形態において、図示していないが、各接合部材(10A)(10B)の裏面の一部に、凹部を形成する一方、受けローラ(55)及び各駆動ローラ(51)(53)の周面に、凸部を形成しても良い。
【0064】
また、この第3実施形態において、受けローラ(55)は、回転自在なものであっても良い。
【0065】
さらに、この発明に係る摩擦撹拌接合法は、次のような利点がある。
【0066】
図10に示すように、例えば上記第1実施形態で用いられた接合部材(10A)(10B)(10C)を3個用いて、あるいはこれ以上個数の接合部材を用いて、これらを接合一体化して最終的に幅広の突合せ接合品を製造しようとする場合には、突合せ部(T)の接合終了後に受け治具(30)を取り外し、これを次に接合しようとする突合せ部(T)の裏面に装着する。このようにして突合せ部(T)を次々に接合していくことにより、幅広の突合せ接合品を製造することができる。つまり、この発明に係る摩擦撹拌接合法によれば、複数箇所の突合せ部(T)…を接合するための受け治具(30)として、少なくとも一種類のサイズの受け治具を準備しておけば良いから、様々なサイズの受け治具を準備する必要がなくなり、この結果、突合せ接合品の製造コストを引き下げることができるようになる。
【0067】
以上、この発明の実施形態を説明したが、この発明は、これら実施形態に限定されるものではなく、様々に変更可能である。
【0068】
例えば、被係合部(X)としての凸部(12)の側面部(12a)又は凹部(14)の側面部(14a)と、係合部(Y)としての凹部(32)の側面部(32a)又は凸部(34)の側面部(34a)とのうちいずれか一方だけが、案内面(S)を有するものであっても良い。
【0069】
さらに、この発明は、接合工具(57)のプローブ(59)を突合せ部(T)に挿入した状態でプローブ()59を突合せ部(T)に沿って移動させることにより、突合せ部(T)を接合する摩擦撹拌接合に対しても適用可能である。
【0070】
【発明の効果】
上述の次第で、この発明によれば、各接合部材の裏面の幅方向の一部に、被係合部が形成されているので、受け治具として、一対の係合部間の寸法が従来の保持治具よりも狭いものを用いることができるようになり、受け治具の小型化を図ることができるから、受け治具を作業能率良く装着することができ、接合作業能率が向上するという効果を奏する。
【0071】
また、各接合部材の凸部における突合せ方向反対側の側面部と、受け治具の各凹部における接合部材の突合せ方向反対側の側面部とのうち少なくとも一方が、嵌合状態のもとで、突合せ部の裏面が受け治具と密接する方向に押圧力が作用したときに、両接合部材に突合せ方向の力が作用するように形成された案内面を有している場合には、例えば、突合せ部の表面が、接合ヘッドの一部(プローブ)の突合せ部への挿入時の押付け圧を受けることにより、あるいは更に接合ヘッドの他の一部(回転子の端面)の押付け圧を受けることにより、両接合部材が突合せ方向の力を受けて突合せ方向に移動しようとする結果、各接合部材の突き合わされた端部同士が強く密着するようになるから、もし仮に、各接合部材の突き合わされる端部が長さ方向に湾曲する等して、端部同士を突き合わせると該突合せ部に隙間が形成されてしまう場合であっても、突合せ部の隙間を消滅させ得て、この状態で突合せ部を接合することができるようになり、もって高品質の突合せ接合品を得ることができるという効果を奏する。
【0072】
また、各接合部材の凹部における突合せ方向側の側面部と、受け治具の各凸部における接合部材の突合せ方向側の側面部とのうち少なくとも一方が、嵌合状態のもとで、突合せ部の裏面が受け治具と密接する方向に押圧力が作用したときに、両接合部材に突合せ方向の力が作用するように形成された案内面を有している場合にも、上記と同様の効果を奏する。
【0073】
さらに、受け治具は、所定長さを有し且つ表面に係合部が長さ方向に沿って形成されるとともに、該係合部が被係合部に沿って嵌合される帯板状のものである場合には、接合操作を連続して行うことができるようになるから、接合作業能率を向上させることができる。
【0074】
これと同様に、受け治具は、周面に係合部が全周に亘って形成された回転可能なローラからなる場合には、接合操作を連続して行うことができるようになるから、接合作業能率を向上させることができる。
【図面の簡単な説明】
【図1】この発明の第1実施形態の摩擦撹拌接合法を示す斜視図である。
【図2】図1中のII−II線断面図である。
【図3】(a)は図1中のIII−III線断面図、(b)はその要部拡大図である。
【図4】(a)は図1中のIV−IV線断面図、(b)はその要部拡大図である。
【図5】図1中のV−V線断面図である。
【図6】(a)は両接合部材をその裏面に受け治具を装着する途中の状態で示す断面図、(b)は両接合部材をその裏面に受け治具を装着した後の状態で示す断面図である。
【図7】この発明の第2実施形態の摩擦撹拌接合法を示す図で、(a)は図4(a)に対応する図、(b)は図4(b)に対応する図である。
【図8】この発明の第3実施形態の摩擦撹拌接合法を示す、図3(a)に対応する図である。
【図9】同第3実施形態の摩擦撹拌接合法を示す、図4(a)に対応する図である。
【図10】上記第1実施形態の摩擦撹拌接合法により、3個の接合部材を突合せ接合して幅広の突合せ接合品を製造する場合において、(a)は突合せ部を接合する時の断面図、(b)は別の突合せ部を接合する時の断面図である。
【図11】従来の摩擦撹拌接合法を示す断面図である。
【図12】従来の摩擦撹拌接合法により、3個の接合部材を突合せ接合して幅広の突合せ接合品を製造する場合において、(a)は突合せ部を接合する時の断面図、(b)は別の突合せ部を接合する時の断面図である。
【符号の説明】
10A、10B…接合部材
12…凸部(被係合部X)
12a…側面部(案内面S)
14…凹部(被係合部X)
14b…側面部(案内面S)
30…受け治具
31…受け部
32…凹部(係合部Y)
32a…側面部(案内面S)
34…凸部(係合部Y)
34a…側面部(案内面S)
50…摩擦撹拌接合装置
55…受けローラ
57…接合工具
58…回転子
59…プローブ
D…接合ヘッド
T…突合せ部
W…接合部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a friction stir welding method used when joining butt portions of two joining members arranged in a butt shape.
[0002]
[Prior art]
Friction stir welding, which joins two joining members together, is a kind of solid-phase joining, and therefore has the advantage of being less prone to deformation and cracking due to thermal strain. In recent years, a new joining means that replaces welding and brazing. Has been used.
[0003]
FIG. 11 shows a case where the butted portions (T ′) of two plate-like joining members (100A) and (100B) arranged in a butting manner are joined by friction stir welding. Each joining member (100A) (100B) shown in the figure extends in the length direction, and in the same figure, the right joining member (100A) in the width direction end and the left joining member ( 100B) and the end in the width direction are arranged to face each other.
[0004]
In the figure, (170) is a welding tool for friction stir welding. This joining tool (170) includes a large-diameter columnar rotor (171), and a small-diameter pin-shaped probe (172) integrally projecting on the end surface (171a) axis of the rotor (171). The joining head (D ′) is composed of the two joining members (100A) (100B). When joining the butt portion (T ′) using the joining tool (170), the probe (172) of the joining tool (170) is inserted into the butt portion (T ′) while rotating. Then, the probe (172) is moved relative to the joining member along the butted portion (T ′) in the inserted state.
[0005]
The frictional heat generated by the rotation of the probe (172) softens the joint members (100A) (100B) at the contact portion with the probe (172) and in the vicinity thereof, and the softened portion is the rotational force of the probe (172). Then, the softening stirrer undergoes plastic flow so as to fill the passage groove of the probe under the pressure of the probe (172), and then rapidly loses frictional heat and solidifies by cooling. This phenomenon is sequentially repeated with the movement of the probe (172), and finally the abutting portion (T ′) is joined, so that both joining members (100A) (100B) are integrated.
[0006]
In this friction stir welding, in order to prevent a problem that the softened part softened by the frictional heat receives the insertion pressure and the advance pressure of the probe (172) and bulges to the back side of the butt part (T '). As shown in the figure, a strip-shaped receiving jig (130) is mounted along the abutting part (T ') in such a manner as to straddle the abutting part (T'). Has been. The receiving jig (130) includes a receiving portion (131) having a flat surface. Then, in a state where the receiving jig (130) is mounted on the back surface of the butting portion (T ′), the receiving portion (131) faces the probe (172) of the welding tool (170) so that the butting portion ( T ′) is in contact with the back surface in a substantially surface contact state.
[0007]
Furthermore, in order to prevent the trouble that the butting portion (T ′) opens due to the insertion pressure and the progressive pressure of the probe (172) of the joining tool (170), both joining members (100A) (100B) A holding jig (150) for holding both the joining members in a butted state is mounted. This holding jig (150) connects a pair of left and right locking pieces (151) and (151) and both locking pieces (151) and (151) and has male screws (152a) formed at both ends. A hook (152) and a pair of locking nuts (153) (153) for fixing the position of each locking piece (151) are provided. And this holding jig (150) sandwiches two joining members (100A) (100B) arranged in a butted manner from the left and right with the locking pieces (151) (151), whereby both joining members ( 100A) and (100B) are held in butt condition.
[0008]
[Problems to be solved by the invention]
Thus, in order to hold both the joining members (100A) and (100B) in the butted state using the holding jig (150), the left and right locking pieces (151) are used as the holding jig (150). The dimension between (151) must be the length of each joining member (100A) (100B) plus the width dimension (H1 ′) (H2 ′). Therefore, when the width dimension (H1 ′) (H2 ′) of each joining member (100A) (100B) is large, for example, the width dimension (H1 ′) (H2 ′) of each joining member (100A) (100B) ) Is 400 mm, the holding jig (150) must have a dimension between the left and right locking pieces (151) (151) of at least 800 mm.
[0009]
Thus, in the conventional method, when holding the wide joining members (100A) and (100B) in the butted state, it is necessary to use the large holding jig (151). For this reason, the holding jig (151) Assembly work and mounting work were troublesome, and joining work efficiency was poor.
[0010]
Further, as shown in FIGS. 12A and 12B, when three or more joining members (100A), (100B), and (100C) are joined and integrated to finally produce a wide butt joint product. Use a holding jig (150) whose length between the left and right locking pieces (151) (151) has a length corresponding to the width of each butt-joint product obtained during the manufacturing stage. As a result, it is necessary to prepare holding jigs (150) (150 ') ... of various sizes. As a result, the manufacturing cost of the butt-joint product increases, and the holding jig (150) There is also a problem that the assembly work and the mounting work are complicated.
[0011]
The present invention has been made in view of the technical background as described above, and the object thereof is to hold two joining members arranged in a butt shape in a butt state with good workability, and thereby a joining work. An object of the present invention is to provide a friction stir welding method capable of improving the efficiency.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a butting portion formed by butting the end portion in the width direction of the first joining member and the end portion in the width direction of the second joining member is disposed on the surface side of both joining members. A friction stir welding method for joining by a joining head of a joining tool, wherein a first joining member in which an engaged portion made of a convex portion or a concave portion is formed along a length direction on a part of the width direction of the back surface; While preparing the 2nd joining member, it is provided with the engaging part which consists of the recessed part by which the said convex part of each joining member is fitted, or the convex part fitted in the said recessed part of each joining member, and the back surface of a butt | matching part The receiving jig is used to receive the back surface of the abutting portion formed by abutting the end portion in the width direction of the first joining member and the end portion in the width direction of the second joining member. To engage and engage the engaged part of the member and the engaging part of the receiving jig Ri, holding the joining members to butt state, in this state, is characterized by joining the butt portion.
[0013]
In this friction stir welding method, the first joining member and the second joining member arranged in a butt shape receive the back surface of the butt portion with a receiving jig at the time of the friction stir welding, whereby the butt portion of the softened portion Swelling to the back side is prevented. Furthermore, in the friction stir welding, both of the joining members are engaged and engaged with the engaged portion formed on the back surface of each joining member and the engaging portion of the receiving jig. The movement in the opposite direction of the direction is restricted, and both the joining members are held in the butted state, thereby preventing the butted portion from being opened. Thus, in each joining member, the engaged portion fitted to the engaging portion of the receiving jig is formed on a part of the back surface of the joining member. By forming it in the middle part in the width direction of the back surface, it is possible to use a receiving jig whose dimension between the pair of engaging parts is narrower than that of the conventional holding jig. Miniaturization is achieved. As a result, it becomes possible to mount the receiving jig with high work efficiency, so that the joining work efficiency is improved.
[0014]
Further, in this invention, at least one of the side surface portion on the opposite side of the butting direction in the convex portion of each joining member and the side surface portion on the opposite side of the mating member in the butting direction of the receiving jig is a convex portion. Guide surface formed so that a force in the butt direction acts on both joining members when a pressing force is applied in a direction in which the back surface of the butt portion is in close contact with the receiving jig in a fitted state with the recess. It is desirable to have
[0015]
According to this, for example, the surface of the abutting portion receives a pressing pressure when a part of the joining head (probe) is inserted into the abutting portion, or another part of the joining head (end surface of the rotor). ), The joining members receive a force in the butting direction and attempt to move in the butting direction. As a result, the butted ends of the joining members come into close contact with each other. Therefore, if the end portions of each joining member that are abutted are curved in the length direction, and a gap is formed in the abutting portion when the end portions are abutted, According to this, the gap of the butt portion can be eliminated, and the butt portion can be joined in this state. As a result, it is possible to prevent a problem that air in the gap of the butt portion is entrained at the time of bonding and a bonding defect such as a void is generated in the bonded portion, so that a high quality butt bonded product can be obtained.
[0016]
Further, in this invention, at least one of the side surface portion on the abutting direction side in the concave portion of each joining member and the side surface portion on the abutting direction side of the joining member in the convex portion of the receiving jig is a concave portion and a convex portion. When the pressing force is applied in the direction in which the back surface of the abutting portion is in close contact with the receiving jig under the fitted state, the guide surface is formed so that a force in the abutting direction acts on both the joining members. Even in this case, the same effect as described above can be obtained.
[0017]
In the present invention, the receiving jig has a predetermined length, and the engaging portion is formed on the surface along the length direction, and the engaging portion is fitted along the engaged portion. In the case of a strip-shaped member to be joined, the engaging part is fitted and engaged with the engaged part along the engaged part by attaching the receiving jig to the back surface of the abutting part. Is done. As a result, the joining operation can be performed continuously, thereby improving the joining work efficiency.
[0018]
Further, in the present invention, when the receiving jig is composed of a rotatable roller having the engaging portion formed on the entire circumference thereof, the following effects are exhibited. In other words, when this roller is rotatable, as the both joining members move relative to the joining head of the joining tool, this roller moves its circumferential surface to the back surface of the butting portion. It rotates in the state which contact | abutted and the engagement part was fitted to the to-be-engaged part. On the other hand, when this roller is rotationally driven, the roller is in a state where its peripheral surface is in contact with the back surface of the abutting portion, and the engaging portion is fitted to the engaged portion. In this state, it is rotationally driven, whereby both joining members are moved. In either case, the joining operation can be performed continuously, thereby improving the joining work efficiency.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment of the invention, FIG. 7 shows a second embodiment of the invention, and FIGS. 8 and 9 show a third embodiment of the invention.
[0020]
As shown in FIG. 1, in the first embodiment of the present invention, the two joining members (10A) and (10B) are made of long plate-like aluminum having a constant width or an alloy material thereof. Yes, they are the same shape and size. In the same figure, the widthwise end portion (11) of the right joining member (first joining member, 10A) and the widthwise end portion (11) of the left joining member (second joining member, 10B) are shown. It is arranged to face each other. In the drawing, (T) is a butt portion formed by abutting the end portion (11) in the width direction of the right joining member (10A) and the end portion (11) in the width direction of the left joining member (10B). is there. Further, (H1) is the width dimension of the first joining member (10A), and (H2) is the width dimension of the second joining member (10B). In the first embodiment, the width dimension (H1) of the first joining member (10A) and the width dimension (H2) of the second joining member (10B) are both 400 mm or more, for example.
[0021]
On the back surface of the butt portion (T), a strip-shaped metal receiving jig (30) having the same length as the length of the butt portion (T) of the joint members (10A) (10B). However, it is mounted along the butt portion (T) in such a manner as to straddle the butt portion (T). The receiving jig (30) is for receiving the back surface of the butt portion (T).
[0022]
As shown in FIG. 6 (a), the intermediate portion of the surface of the receiving jig (30) in the width direction (left-right direction in the figure) faces a probe (59) of a joining tool (57) described later. The receiving part (31) contact | abutted on the back surface of the butt | matching part (T) in a substantially surface contact state is formed in the aspect along the length direction. This receiving part (31) consists of a flat surface.
[0023]
Further, a pair of left and right recesses (32) and (32) as the engaging portions (Y) are formed along the length direction on both the left and right sides of the receiving portion (31) on the surface of the receiving jig (30). Has been. Of the two side surfaces of each recess (32), the side surface (32a) opposite to the butting direction (c) of the joining member is such that the back surface of the butting portion (T) is the receiving portion (31) of the receiving jig (30). ) And the direction (d) in close contact with the receiving portion (31) side (that is, the butting direction side of the joining member). The entire side surface portion (32a) is a guide surface (S). ).
[0024]
On the other hand, as shown in the figure, in the vicinity of the end (11) to be abutted at the intermediate portion in the width direction of the back surface of each joining member (10A) (10B) The convex part (12) is integrally formed along the length direction. Of the two side surface portions of each convex portion (12), the side surface portion (12a) opposite to the butting direction (c) of the joining member is such that the back surface of the butting portion (T) is the receiving portion of the receiving jig (30) ( 31) It is composed of an inclined surface inclined toward the end (11) to be abutted with respect to the direction (d) in close contact with the surface, and the entire side surface (12a) functions as a guide surface (S). . The inclination angle of the side surface portion (12a) is set to be substantially equal to the inclination angle of the side surface portion (32a) of the recess (32) of the receiving jig (30).
[0025]
Next, a procedure for mounting the receiving jig (30) on the back surface of the butt portion (T) will be described.
[0026]
First, as shown in FIG. 6A, the end portion (11) in the width direction of one joining member (10A) and the end portion (11) in the width direction of the other joining member (10B) are brought into contact with each other. In this embodiment, in a state where both the joining members (10A) and (10B) are abutted, a small gap is formed in the abutting portion (T) as shown in FIG. This gap is due to the end (11) of the joining members (10A) and (10B) being curved in the length direction, or unevenness consisting of processing marks is formed on the end (11) to be abutted. It is caused by what is being done.
[0027]
Next, the receiving jig (30) is moved, and the receiving jig (30) is mounted on the back surface of the butt portion (T). Alternatively, both the joining members (10A) and (10B) are moved, and the receiving jig (30) is mounted on the back surface of the butt portion (T). Here, for convenience of explanation, the receiving jig (30) is moved and the receiving jig (30) is mounted on the back surface of the abutting portion (T).
[0028]
During the mounting operation of the receiving jig (30), the convex part (12) of each joining member (10A) (10B) is fitted in the concave part (32) (32) of the receiving jig (30). At the same time, the side surface portion (32a) of each concave portion (32) comes into contact with the side surface portion (12a) of each convex portion (12) in a substantially surface contact state.
[0029]
By further moving the receiving jig (30), the side surface portion (32a) of each concave portion (32) slides on the side surface portion (12a) of the convex portion (12) so that the concave portion (32) is joined to the joining member (10A). Move towards the back of (10B). Along with this movement, the side surface part (32a) of each concave part (32) presses the convex part (12) in the butting direction (c) (c) of the joining member (10A) (10B), that is, each joining member (10A ) (10B) is applied with force in the butt direction (c) (c). Each joining member (10A) (10B) receives the force in the abutting direction (c) (c) and moves in the abutting direction (c) (c). By this moving operation, the abutted ends (11) and (11) of the joining members (10A) and (10B) are brought into close contact with each other, and the gap formed in the abutting portion (T) disappears. When the receiving jig (30) is further moved and the receiving part (31) comes into contact with the back surface of the abutting part (T) as shown in FIG. 6 (b), the abutting part ( T) The mounting operation on the back surface and the fitting operation of the concave portion (32) to the convex portion (12) are completed.
[0030]
In the mounted state of the receiving jig (30), the receiving part (31) of the receiving jig (30) contacts the back surface of the abutting part (T) in a substantially surface contact state along the abutting part (T). Yes. The abutted ends (11) and (11) of each joining member (10A) (10B) are in a mutual pressure contact state. Furthermore, each convex part (12) and the concave part (32) are held so that the convex part (12) is tightly fitted in the concave part (32) and is engaged with each other so that the fitting state is not released. Has been. That is, the side surface portion (12a) of each convex portion (12) and the side surface portion (32a) of the concave portion (32) are held in pressure contact with each other so that the fitted state is not released by the frictional force associated therewith. As a result, the movement of each joining member (10A) (10B) in the direction opposite to the butting direction (c) is restricted, so that both joining members (10A) (10B) are held in the butting state.
[0031]
Next, both the joining members (10A) and (10B) are set in the friction stir welding apparatus (50) shown in FIGS. 1 to 5 together with the receiving jig (30) while being held in the butted state.
[0032]
Here, the configuration of the friction stir welding apparatus (50) will be described.
[0033]
In FIG. 1, (57) is a welding tool for friction stir welding. The joining tool (27) includes a large-diameter columnar rotor (58) and a small-diameter pin probe (59) projecting on the end surface (58a) axis of the rotor (58). A joining head (D) is provided. The rotor (58) and the probe (59) are made of a heat-resistant material that is harder than the joining members (10A) and (10B) and can withstand frictional heat generated during joining. Further, a convex portion (not shown) for stirring the softened portion is formed on the peripheral surface of the probe (59). And this joining tool (57) is arrange | positioned in the aspect which orient | assigned the probe (59) below to the surface side of both joining members (10A) (10B) arrange | positioned in butt | matching form.
[0034]
(55) is a receiving roller. As shown in FIG. 2, the receiving roller (55) has a circumferential surface on the back side of both the joining members (10A) and (10B) with a predetermined gap from the probe (59) of the joining tool (57). It arrange | positions in the aspect which opposes a probe (59). This receiving roller (55) can be driven to rotate, and is provided with a driving device (not shown). Both joining members (10A) and (10B) are arranged on one side in the length direction (the direction indicated by arrow B). It also functions as a drive roller that is moved. In this embodiment, the receiving roller (55) may be rotatable.
[0035]
(51) is a first drive roller that moves both joining members (10A) and (10B) in a predetermined direction (b). The first drive roller (51) is disposed on the back side of the joining members (10A) (10B) behind the receiving roller (55) in the moving direction (b) of the joining members (10A) (10B). . (53) is a second drive roller that similarly moves both joining members (10A) (10B) in a predetermined direction (b). The second drive roller (53) is disposed on the back side of the joining members (10A) (10B) in front of the receiving roller (55) in the moving direction (b) of the joining members (10A) (10B). .
[0036]
(52) and (54) are a pair of left and right rotatable pressing rollers. These pressing rollers (52) and (54) are arranged above the respective drive rollers (51) and (53) on the surface side of both the joining members (10A) and (10B) at a predetermined interval. Each presser roller (52) (54) is a drive roller (51) that has a receiving jig (30) that holds both joining members (10A) (10B) or both joining members (10A) (10B) in abutting state. By pressing against the peripheral surface of (53), a driving force in the moving direction (b) is applied to both joint members (10A) and (10B).
[0037]
Thus, the abutting portion (T) of both the joining members (10A) and (10B) held in the abutting state by the receiving jig (30) is obtained by the friction stir welding apparatus (50) as follows. Be joined.
[0038]
First, in a state where the probe (59) of the welding tool (57) is kept in the upwardly separated position, both end members in the length direction of both the joining members (10A) and (10B) are received together with the jig (30). It passes between the first driving roller (51) and the pressing roller (52) that are rotationally driven.
[0039]
Thereby, since both joining members (10A) and (10B) receive the pressing pressure of the pressing roller (52), the receiving jig (30) holding the both joining members (10A) and (10B) in a butted state is provided. Pressed against the circumferential surface of the first drive roller (51), the driving force in the moving direction (b) is applied to the joint members (10A) and (10B) from the first drive roller (51). In response to this driving force, both joining members (10A) and (10B) move between the receiving roller (55) and the probe (59) together with the receiving jig (30) in the butted state. Further, as shown in FIG. 3 (b), when both of the joining members (10A) and (10B) receive the pressing pressure of the pressing roller (52), the both joining members (10A) and (10B) are brought into contact with each other at the butt portion ( T) tries to move in the direction in which the back surface of the receiving jig (30) is in close contact with the receiving part (31) of the receiving jig (30), and this moving operation causes the convex part (12) of each joining member (10A) (10B) to move. The side part (32a) of the concave part (32) of (30) slides, and this causes a force in the abutting direction (c) (c) to act on each joining member (10A) (10B). As a result of receiving the force of (c), each joining member (10A) (10B) tries to move in the abutting direction (c) (c), so that the abutted ends (11) (11) are in close contact with each other. .
[0040]
When the joining start scheduled position of the butting portion (T) of both joining members (10A) and (10B) reaches above the receiving roller (55), the movement of both joining members (10A) and (10B) is temporarily stopped. Then, the probe (59) is lowered while rotating. When the tip of the probe (59) comes into contact with the surface of the butting portion (T), the contact portion is softened by frictional heat, so the probe (59) is further lowered to bring the probe (59) into the butting portion (T). The probe (59) is pressed against the surface and inserted into the abutting portion (T) in a manner facing the receiving portion (31) of the receiving jig (30), and the end surface (58a) of the rotor (58) is inserted. Press against the surface of the butt (T). In this state, the positions of the rotor (58) and the probe (59) are fixed. By pressing the end face (58a) of the rotor (58) against the surface of the butting part (T), scattering of the softened part softened by frictional heat can be prevented, and a joined part (W) having high joining strength can be formed. It becomes possible to form a joint (W) having a flat surface.
[0041]
Further, as shown in FIG. 4B, the surface of the abutting portion (T) is subjected to a pressing pressure when the joining tool (57) is inserted into the abutting portion (T) of the probe (59), or Further, by receiving the pressing pressure (e) of the end face (58a) of the rotor (58) of the joining tool (57), both joining members (10A) (10B) are received by the back face of the butting portion (T). The projection (12) of each joint member (10A) (10B) is caused to move in the direction in close contact with the receiving part (31) of (30), and the concave part (32) of the receiving jig (30) The side part (32a) of this part is slid, and this causes a force in the butt direction (c) (c) to act on each joint member (10A) (10B). As a result of the both joining members (10A) and (10B) trying to move in the butting direction (c) and (c), the butted ends (11) and (11) are in close contact with each other. The
[0042]
Further, as shown in FIG. 2, the joining tool (57) is disposed slightly inclined toward the moving direction (b) side of both joining members (10A) and (10B). For this reason, the probe (59) Is inserted into the butting part (T), the portion of the end face (58a) of the rotor (58) on the moving direction (b) side of both joint members (10A) and (10B) is the surface of the butting part (T). As a result, the portion of the end face (58a) of the rotor (58) opposite to the moving direction of the joint members (10A) (10B) is slightly lifted from the surface of the butted portion (T). The probe (59) is lowered in advance, and both the joining members (10A) (10B) are forcibly passed between the probe (59) and the receiving roller (55). The probe (59) may be inserted into the abutting portion (T) by being inserted into the abutting portion (T) from the front end portion in the moving direction of both joining members (10A) (10B).
[0043]
Next, the receiving roller (55) and the first driving roller (51) are driven again. Both joint members (10A) and (10B) having the probe (59) inserted into the abutting portion (T) have a driving force applied from the receiving roller (55) and a driving force applied from the first driving roller (51). The second drive roller (53) that is rotationally driven together with the receiving jig (30) in the butted state while the butted portion (T) sequentially moves so as to pass through the probe (59). And the press roller (54).
[0044]
In this way, both joint members (10A) and (10B) are moved so that the butting portion (T) sequentially passes through the probe (59), so that both joint members (10A) and (10B) are probe (59). In the passing portion, that is, the entire butted portion (T) is joined and integrated. That is, the probe (59) is caused by frictional heat generated by the rotation of the probe (59) or by frictional heat generated by sliding between the end surface (58a) of the rotor (58) and the surface of the butting portion (T). The joint members (10A) and (10B) are softened in the contact portion and the vicinity thereof, and the softened portion is stirred by receiving the rotational force of the probe (59), and the softened stirring portion is used as the probe (59). After the plastic fluid flows so as to fill the passage groove of the probe (59) in response to the traveling pressure, the frictional heat is rapidly lost to solidify by cooling. This phenomenon is sequentially repeated with the movement of both the joining members (10A) and (10B). Finally, the butt portion (T) is joined over the entire region, and both joining members (10A) and (10B) are joined. Integrated.
[0045]
Thus, in general, when the probe (59) is inserted into the abutting portion (T), the abutting portion (T) receives the insertion pressure of the probe (59) and tries to open in the left-right direction. When both joining members (10A) (10B) are moved in the state of being inserted into the part (T), the butted part (T) tends to open in the left-right direction when passing through the probe (59). However, according to this friction stir welding method, the convex portions (12) of the respective joining members (10A) (10B) and the concave portions (32) of the receiving jig (30) are engaged and engaged with each other. Since the movement in the direction opposite to the abutting direction of 10A) and (10B) is restricted, the abutting portion (T) does not open and no gap is generated in the abutting portion (T). Therefore, according to this friction stir welding method, in the state where no gap is generated in the butt portion (T), in other words, in the state where the butt ends (11) and (11) are in close contact with each other, (T) will be joined. For this reason, the air in the clearance of the butt | matching part (T) is caught at the time of joining, and the malfunction which joining defects, such as a void, generate | occur | produces in a joining part (W), is prevented.
[0046]
Furthermore, since the back surface of the butt portion (T) is received by the receiving portion (31) of the receiving jig (30), the softened portion softened by frictional heat bulges to the back surface side of the butt portion (T). Does not occur. Therefore, the back surface of the junction (W) is formed flat.
[0047]
As described above, according to this friction stir welding method, there is no void at the joint (W), and a wide surface of high quality such that the back surface of the joint (W) is formed flat. A butt joint product is obtained.
[0048]
Furthermore, according to this friction stir welding method, in order to hold both the joining members (10A) and (10B) in a butted state, the dimension between the pair of recesses (32) and (32) is reduced as a receiving jig (30). Since it is only necessary to use one that is set so as to correspond to the distance between the convex portions (12) and (12) of the joining members (10A) and (10B) arranged in a butt shape, the receiving jig (30) is small. Can be achieved. For this reason, it becomes possible to mount the receiving jig (30) with high work efficiency, thereby improving the joint work efficiency. Further, as described above, by performing the mounting operation on the back surface of the abutting portion (T) of the receiving jig (30), the concave portion (32) and the convex portion (12) are engaged and engaged with each other. Since (10A) and (10B) are held in the butted state, the mounting operation of the receiving jig (30) on the back surface of the butting portion (T) and the fitting operation of the concave portion (32) and the convex portion (12) There is an advantage that two operations can be performed at the same time.
[0049]
In this friction stir welding method, both the joining members (10A) and (10B) are necessarily set in the friction stir welding apparatus (50) after the receiving jig (30) is mounted on the back surface of the butt portion (T). It is not necessary, and the receiving jig (30) is moved to the butting portion (T) while the two joining members (10A) and (10B) arranged in the butting state are passed between the first driving roller (51) and the pressing roller (52). ) May be attached to the back side.
[0050]
Further, in this friction stir welding method, the side surfaces (12a) and (12a) of the convex portions (12) and (12) of both the joining members (10A) and (10B) do not necessarily have the guide surfaces (S). Only the side surface portion of the convex portion of any one of the joining members may have a guide surface. Further, the side surfaces (32a) and (32a) of the pair of left and right recesses (32) and (32) of the receiving jig (30) are not necessarily required to have the guide surface (S). Only the side surface portion may have a guide surface.
[0051]
Moreover, the convex part (12) may be formed along the length direction on the back surface of the end part (11) with which each joining member (10A) (10B) is abutted.
[0052]
In the friction stir welding method according to the second embodiment shown in FIG. 7, each engaged member (10 </ b> A) (10 </ b> B) has an engaged portion in the vicinity of the end (11) to be abutted at the intermediate portion in the width direction on the back surface. A recess (14) as (X) is formed along the length direction. Of the two side surfaces of each recess (14), the side surface (14a) on the abutting direction (c) side of the joining member is such that the back surface of the butting portion (T) is connected to the receiving portion (31) of the receiving jig (30). It consists of an inclined surface inclined toward the end portion (11) to be abutted against the close direction, and the entire side surface portion (14a) functions as a guide surface (S).
[0053]
On the other hand, on the left and right sides of the receiving portion (31) on the surface of the receiving jig (30), a pair of left and right convex portions (34) as an engaging portion (Y) are integrally formed along the length direction. . Of the two side surface portions of each convex portion (34), the side surface portion (34a) of the joining member in the butting direction is in close contact with the receiving portion (31) of the receiving jig (30) at the back surface of the butting portion (T). It consists of an inclined surface inclined toward the receiving portion (31) with respect to the direction, and the entire side surface portion (34a) functions as a guide surface (S).
[0054]
In a state where the receiving jig (30) is mounted on the back surfaces of both the joining members (10A) and (10B), the abutted ends (11) and (11) of the joining members (10A) and (10B) are As in the case of the first embodiment, a mutual pressure contact state is established. Furthermore, each recessed part (14) and convex part (34) hold | maintain so that this fitting state may not be cancelled | released when a convex part (34) fits tightly in a recessed part (14) and both are engaged. That is, the side surface portion (14a) of each concave portion (14) and the side surface portion (34a) of the convex portion (34) are pressed against each other and are held so that the fitted state is not released by the frictional force associated therewith. . Accordingly, the movement of each joining member (10A) (10B) in the direction opposite to the butting direction is restricted, and thus both joining members (10A) (10B) are held in the butting state.
[0055]
The stir welding method of the second embodiment is performed in the same procedure as the first embodiment, and has the same advantages as the first embodiment.
[0056]
In the friction stir welding method of the third embodiment shown in FIGS. 8 and 9, the two joining members (10A) and (10B) have the same configuration as that of the first embodiment.
[0057]
On the other hand, in the friction stir welding method of the third embodiment, as shown in FIG. 9, the receiving roller (55) of the friction stir welding apparatus (50) is used as the receiving jig (30). That is, on the peripheral surface of the receiving roller (55), there are a receiving portion (31) and a pair of left and right concave portions (32) (32) as engaging portions (Y) on the left and right sides of the receiving portion (31). Is formed over the entire circumference. Of the two side surfaces of each recess (32), the side surface (32a) opposite to the joining direction of the joining member is in close contact with the receiving portion (31) of the receiving jig (30). It consists of a taper surface inclined toward the receiving part (31) side with respect to the direction to be. The entire side surface portion (32a) functions as a guide surface (S).
[0058]
Further, in this friction stir welding apparatus (50), as shown in FIG. 8, the peripheral surface of the first drive roller (51) has an auxiliary receiving portion (35) and left and right sides of the auxiliary receiving portion (35). A pair of left and right recesses (32) and (32) as engaging portions (Y) are formed on both sides over the entire circumference. Although not shown, the second drive roller (53) has the same configuration as the first drive roller (51). The auxiliary receiving portion (35) and the recessed portion (32) of each drive roller (51) (53) have the same configuration as the receiving roller (55).
[0059]
In this friction stir welding method, two joining members (10A) (10A) arranged in a butt shape are passed between the first drive roller (51) and the pressing roller (52) (see FIG. 8). ) Since both the joining members (10A) and (10B) receive the pressing force of the pressing roller (52), the both joining members (10A) and (10B) are pressed against the peripheral surface of the first drive roller (51), A driving force in the moving direction is applied from the first driving roller (51). At the same time, when both the joining members (10A) and (10B) receive the pressing pressure of the pressing roller (52), both the joining members (10A) and (10B) have the first drive roller (51) ) Move in the direction of close contact with the auxiliary receiving part (35). By this moving operation, the back surface of the butting portion (T) and the auxiliary receiving portion (35) of the first drive roller (51) come into contact with each other, and the convex portions (12) of the joining members (10A) (10B) One drive roller (51) is engaged with the recess (32). As a result, both the joining members (10A) and (10B) are held in the butted state.
[0060]
Both joining members (10A) (10B) held in abutting state by the first drive roller (51) also pass between the receiving roller (55) and the probe (59) (see FIG. 9). The butt state is maintained. That is, the surface of the abutting portion (T) receives a pressing pressure when the probe (59) of the joining tool (57) is inserted into the abutting portion (T), or further, the rotor of the joining tool (57) ( 58), by receiving the pressing pressure on the end face (58a), the joining members (10A) and (10B) are brought into close contact with the receiving part (31) of the receiving roller (55). Moving. By this moving operation, the back surface of the butting portion (T) and the receiving portion (31) come into contact with each other, and the back surface of the butting portion (T) is received by the receiving portion (31), and each joining member (10A) (10B ) And the recess (32) of the receiving roller (55) are engaged with each other. As a result, both the joining members (10A) and (10B) are held in the butted state. In addition, by this moving operation, the convex portion (12) of each joining member (10A) (10B) slides on the side surface portion (32a) of the concave portion (32) of the receiving roller (30), thereby each joining member (10A ) Because the force in the butt direction acts on (10B), the joint members (10A) and (10B) try to move in the butt direction as a result of receiving the force in the butt direction. In close contact.
[0061]
Further, the two joining members (10A) and (10B) are not shown when passing between the second driving roller and the pressing roller, but the back surface of the butting portion (T) and the second driving roller assist. When the receiving part abuts and the back surface of the butting part (T) is received by the auxiliary receiving part, the convex part (12a) and the concave part (32) of each joining member (10A) (10B) are fitted The butt state is maintained.
[0062]
In this state, the receiving roller (55) and the driving rollers (51) (53) are in a state where the receiving portion (31) and the auxiliary receiving portion (35) are in contact with the back surface of the butting portion (T) and The concave portion (32) is rotationally driven at a fixed position in a state where the concave portion (32) is fitted to the convex portion (12) of each joining member (10A) (10B). Thereby, both joining members (10A) and (10B) are moved in a predetermined direction so that the abutting portion (T) sequentially passes through the probe (59), so that the abutting portion (T) is joined and both joining members (10A ) (10B) is integrated.
[0063]
In the third embodiment, although not shown, a recess is formed in a part of the back surface of each joining member (10A) (10B), while the receiving roller (55) and each driving roller (51) ( A convex portion may be formed on the peripheral surface of 53).
[0064]
In the third embodiment, the receiving roller (55) may be rotatable.
[0065]
Furthermore, the friction stir welding method according to the present invention has the following advantages.
[0066]
As shown in FIG. 10, for example, three joining members (10A), (10B), and (10C) used in the first embodiment are joined or joined together by using more joining members. Finally, when it is intended to manufacture a wide butt-joint product, the receiving jig (30) is removed after the joining of the butt portion (T), and this is connected to the butt portion (T) to be joined next. Install on the back. By joining the butt portions (T) one after another in this way, a wide butt-joined product can be manufactured. That is, according to the friction stir welding method according to the present invention, a receiving jig of at least one kind of size should be prepared as a receiving jig (30) for joining a plurality of butted portions (T). Therefore, it is not necessary to prepare receiving jigs of various sizes, and as a result, the manufacturing cost of the butt-joined product can be reduced.
[0067]
As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment, A various change is possible.
[0068]
For example, the side part (12a) of the convex part (12) as the engaged part (X) or the side part (14a) of the concave part (14) and the side part of the concave part (32) as the engaging part (Y) Only one of (32a) and the side surface portion (34a) of the convex portion (34) may have the guide surface (S).
[0069]
Further, according to the present invention, the butt portion (T) is moved by moving the probe () 59 along the butt portion (T) in a state where the probe (59) of the joining tool (57) is inserted into the butt portion (T). The present invention can also be applied to friction stir welding that joins.
[0070]
【The invention's effect】
As described above, according to the present invention, since the engaged portion is formed in a part of the back surface of each joining member in the width direction, the dimension between the pair of engaging portions is conventionally used as a receiving jig. Narrower than the holding jig can be used, and the receiving jig can be miniaturized, so that the receiving jig can be mounted with good work efficiency and the joining work efficiency is improved. There is an effect.
[0071]
Further, at least one of the side surface portion on the opposite side of the butting direction in the convex portion of each joining member and the side surface portion on the opposite side of the butting direction of the joining member in each concave portion of the receiving jig is in a fitted state, When the back surface of the butting portion has a guide surface formed so that a force in the butting direction acts on both joining members when a pressing force is applied in a direction in close contact with the receiving jig, for example, The surface of the abutting part receives a pressing pressure when a part of the joining head (probe) is inserted into the abutting part, or further receives a pressing pressure of the other part of the joining head (end face of the rotor). As a result of both joining members receiving a force in the abutting direction and trying to move in the abutting direction, the abutted ends of each joining member come into close contact with each other. The end is longer Even if a gap is formed in the abutting portion when the end portions are abutted with each other, for example, the gap of the abutting portion can be eliminated, and the abutting portion can be joined in this state. As a result, it is possible to obtain a high-quality butt-joint product.
[0072]
Further, at least one of the side surface portion on the abutting direction side in the concave portion of each joining member and the side surface portion on the abutting direction side of the joining member in each convex portion of the receiving jig is in a mated state. When a pressing force is applied in the direction in which the back surface of the metal plate is in close contact with the receiving jig, both of the joining members have guide surfaces formed so that a force in the butt direction acts. There is an effect.
[0073]
Further, the receiving jig has a predetermined length, and a band plate shape in which the engaging portion is formed on the surface along the length direction, and the engaging portion is fitted along the engaged portion. In the case of the above, since the joining operation can be performed continuously, the joining work efficiency can be improved.
[0074]
Similarly to this, when the receiving jig is composed of a rotatable roller having an engaging portion formed on the entire circumference, the joining operation can be continuously performed. The joining work efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a friction stir welding method according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
3A is a cross-sectional view taken along line III-III in FIG. 1, and FIG. 3B is an enlarged view of a main part thereof.
4A is a cross-sectional view taken along line IV-IV in FIG. 1, and FIG. 4B is an enlarged view of a main part thereof.
FIG. 5 is a cross-sectional view taken along line VV in FIG.
FIG. 6A is a cross-sectional view showing a state in which both receiving members are attached to the back surface of the receiving member, and FIG. 6B is a state after both receiving members are attached to the back surface of the receiving jig. It is sectional drawing shown.
7A and 7B are diagrams illustrating a friction stir welding method according to a second embodiment of the present invention, in which FIG. 7A corresponds to FIG. 4A, and FIG. 7B corresponds to FIG. .
FIG. 8 is a view corresponding to FIG. 3A, showing a friction stir welding method according to a third embodiment of the present invention.
FIG. 9 is a view corresponding to FIG. 4A, showing the friction stir welding method of the third embodiment.
10A is a cross-sectional view when joining a butt portion in the case of manufacturing a wide butt joint product by butt-joining three joining members by the friction stir welding method of the first embodiment. FIG. (B) is sectional drawing when joining another butt | matching part.
FIG. 11 is a cross-sectional view showing a conventional friction stir welding method.
12A is a cross-sectional view when joining a butt portion in the case of manufacturing a wide butt joint product by butt-joining three joining members by a conventional friction stir welding method; FIG. FIG. 6 is a cross-sectional view when another butt portion is joined.
[Explanation of symbols]
10A, 10B ... Joining member
12 ... Convex part (engaged part X)
12a ... Side surface (guide surface S)
14: Recess (engaged part X)
14b ... Side surface (guide surface S)
30 ... Receiving jig
31 ... Receiver
32 ... Recess (engagement part Y)
32a ... Side surface (guide surface S)
34 ... convex part (engagement part Y)
34a ... Side surface (guide surface S)
50… Friction stir welding equipment
55 ... Receiving roller
57 ... Joining tool
58 ... Rotor
59… Probe
D ... Joining head
T ... Butting part
W ... Junction
Claims (3)
裏面の幅方向の一部に、凸部(12)又は凹部(14)からなる被係合部(X)が長さ方向に沿って形成された板状の第1接合部材(10A)及び第2接合部材(10B)を準備するとともに、
各接合部材の前記凸部(12)が嵌合される凹部(32)又は各接合部材の前記凹部(14)内に嵌合される凸部(34)からなる係合部(Y)を備えるとともに、突合せ部の裏面を受ける受け治具(30)を用い、
第1接合部材(10A)の幅方向の端部(11)と第2接合部材(10B)の幅方向の端部(11)とを、突合せ部(T)の裏面が平坦面になるように互いに両接合部材の幅方向に突き合わせてなる突合せ部(T)の裏面を、前記受け治具(30)で受けるとともに、各接合部材の被係合部(X)と受け治具の係合部(Y)とを嵌合係合させることにより、両接合部材を突合せ状態に保持し、
この状態で、突合せ部(T)を接合する摩擦撹拌接合法であり、
各接合部材の前記凸部(12)における突合せ方向反対側の側面部(12a)と、受け治具の前記凹部(32)における接合部材の突合せ方向反対側の側面部(32a)とのうち少なくとも一方は、あるいは各接合部材の前記凹部(14)における突合せ方向側の側面部(14a)と、受け治具の前記凸部(34)における接合部材の突合せ方向側の側面部(34a)とのうち少なくとも一方は、嵌合状態のもとで、突合せ部(T)の裏面が受け治具(30)と密接する方向に突合せ部(T)の表面に押圧力が作用したときに、両接合部材(10A)(10B)に突合せ方向(ハ)の力が作用するように形成された案内面(S)を有していることを特徴とする摩擦撹拌接合法。A butting portion (T) formed by abutting the end portion (11) in the width direction of the first joining member (10A) and the end portion (11) in the width direction of the second joining member (10B) is the surface of both joining members. A friction stir welding method for joining by a joining head (D) of a joining tool arranged on the side,
A plate-like first joining member (10A) in which a portion to be engaged (X) including a convex portion (12) or a concave portion (14) is formed along the length direction in a part of the width direction of the back surface and the first While preparing 2 joining members (10B),
An engagement portion (Y) comprising a recess (32) in which the projection (12) of each joining member is fitted or a projection (34) fitted in the recess (14) of each joining member is provided. Along with the receiving jig (30) that receives the back of the butt,
The end portion (11) in the width direction of the first joining member (10A) and the end portion (11) in the width direction of the second joining member (10B) are arranged so that the back surface of the butted portion (T) is a flat surface. The receiving jig (30) receives the back surface of the abutting portion (T) that abuts each other in the width direction of both joining members, and the engaged portion (X) of each joining member and the engaging portion of the receiving jig By fitting and engaging (Y), both the joining members are held in the butted state,
In this state, a friction stir welding method for joining the butt portion (T) ,
At least one of the side surface portion (12a) on the opposite side in the abutting direction of the convex portion (12) of each joining member and the side surface portion (32a) on the opposite side of the abutting direction of the joining member in the concave portion (32) of the receiving jig. One or the side surface portion (14a) on the abutting direction side of the concave portion (14) of each joining member and the side surface portion (34a) on the abutting direction side of the joining member on the convex portion (34) of the receiving jig. At least one of them is joined when a pressing force is applied to the surface of the abutting portion (T) in a direction in which the back surface of the abutting portion (T) is in close contact with the receiving jig (30) in a fitted state. A friction stir welding method comprising a guide surface (S) formed so that a force in a butting direction (c) acts on the members (10A) and (10B) .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34890199A JP4414035B2 (en) | 1999-12-08 | 1999-12-08 | Friction stir welding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34890199A JP4414035B2 (en) | 1999-12-08 | 1999-12-08 | Friction stir welding method |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001162383A JP2001162383A (en) | 2001-06-19 |
JP4414035B2 true JP4414035B2 (en) | 2010-02-10 |
Family
ID=18400158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34890199A Expired - Fee Related JP4414035B2 (en) | 1999-12-08 | 1999-12-08 | Friction stir welding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4414035B2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4628774B2 (en) * | 2004-03-31 | 2011-02-09 | 川崎重工業株式会社 | Friction stir welding equipment |
DE102005048001B4 (en) * | 2005-10-06 | 2007-06-14 | Euro-Composites S.A., Zone Industrielle | connecting element |
DE102007010262A1 (en) * | 2007-03-02 | 2008-09-04 | Siemens Ag | Lightweight structures, for use in e.g. vehicle bodywork, comprise sandwich panel with heat-sensitive core between two outer sheets, connectors at either end of the panel being welded to it using friction stir welding |
JP5308041B2 (en) * | 2008-03-04 | 2013-10-09 | 日軽金アクト株式会社 | Friction stir welding equipment |
JP2008279509A (en) * | 2008-07-14 | 2008-11-20 | Showa Denko Kk | Method for manufacturing bonded joint |
JP5234777B2 (en) * | 2008-12-15 | 2013-07-10 | カルソニックカンセイ株式会社 | Friction stir welding method |
CN102120287B (en) * | 2010-12-16 | 2013-07-10 | 西安交通大学 | Embedded stirring and rubbing slit welding method |
FR2995237B1 (en) | 2012-09-07 | 2015-05-01 | Airbus Operations Sas | IMPROVED FRICTION MIXING WELDING SYSTEM COMPRISING MOBILE BACK SUPPORT. |
KR102554292B1 (en) * | 2021-07-20 | 2023-07-12 | 주식회사 동희산업 | Friction stir welding apparatus |
-
1999
- 1999-12-08 JP JP34890199A patent/JP4414035B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2001162383A (en) | 2001-06-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3897391B2 (en) | Friction stir welding method for metal joining members | |
EP1688206B1 (en) | Friction stir welding method with prior welding of a buildup bead by using a buildup member | |
JP4414035B2 (en) | Friction stir welding method | |
EP1149656B1 (en) | Method and apparatus for joining | |
JPH1110366A (en) | Method and device of friction stirring joining | |
JP2001321965A (en) | Corner joining method by friction stir welding | |
KR101881679B1 (en) | Method for manufacturing heat transfer plate | |
JP2002011583A (en) | Method of friction stir welding | |
US6557746B2 (en) | Friction stir bonding method | |
JP2000246465A (en) | Tool for friction agitation joining | |
JP3861719B2 (en) | Friction stir welding method | |
JP2003001440A (en) | Membrane for corner friction stir welding member welding method for the same | |
JP2001129673A (en) | Method of joining by friction stir welding | |
JP3935234B2 (en) | Manufacturing method of butt joint | |
JPH1110368A (en) | Friction stirring joining method | |
JP2002035964A (en) | Friction stir welding method and tool for lap joint | |
JP4008593B2 (en) | Friction stir welding method and friction stir welding apparatus | |
JP3974708B2 (en) | Butt joint structure | |
JPH11104860A (en) | Method for friction stirring joining and device therefor | |
JP4033522B2 (en) | Friction stir welding apparatus and friction stir welding method | |
JP4668437B2 (en) | Friction stir welding method and friction stir welding apparatus | |
JP4551527B2 (en) | Method for joining metal parts | |
JP4597402B2 (en) | Friction stir welding method | |
JP2018118286A (en) | Friction stir welding method | |
JP2001205458A (en) | Coupling structure of friction stir joining hollow material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061106 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20081225 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090113 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090212 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20091027 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091119 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121127 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D02 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121127 Year of fee payment: 3 |
|
LAPS | Cancellation because of no payment of annual fees |