JP2015024418A5 - - Google Patents

Claims (4)

回転工具によって、一方の部材の端部と他方の部材の端部とを突き合わせ部を摩擦撹拌接合によって接合する摩擦撹拌接合用継手であって、
前記摩擦撹拌接合用継手は、
前記一方の部材の端部の両面に前記一方の部材の厚さ方向に厚みを増した凸部を備える前記一方の部材と、
前記他方の部材の端部の両面に前記他方の部材の厚さ方向に厚みを増した凸部を備えるとともに、前記他方の部材の端部の下面の前記凸部から前記一方の部材の前記凸部の下面に沿って延伸する延伸部を有する前記他方の部材と、
からなり、
前記一方の部材の前記端部を前記延伸部の上面に載置するとともに、前記回転工具の先端部を該延伸部の厚さの範囲内まで圧入して摩擦攪接合が行われるようにしたこと
を特徴とする摩擦撹拌接合用継手。 A friction stir welding joint that joins the end of one member and the end of the other member by a friction stir welding with a rotary tool,
The friction stir welding joint is
The one member provided with convex portions whose thickness is increased in the thickness direction of the one member on both surfaces of the end portion of the one member;
Protrusions whose thickness is increased in the thickness direction of the other member are provided on both surfaces of the end portion of the other member, and the protrusions of the one member from the protrusions on the lower surface of the end portion of the other member. The other member having an extending portion extending along the lower surface of the portion;
Consists of
The end portion of the one member is placed on the upper surface of the extending portion, and the tip portion of the rotary tool is press-fitted within the thickness range of the extending portion so that friction stir welding is performed. Friction stir welding joint characterized by 前記回転工具は、大径部と、該大径部の下面から下方に延び前記突き合わせ面に圧入される小径部とを有し、前記大径部の下面が、前記突き合わせ部の上端に達した状態で、前記小径部の先端面が前記延伸部の厚さの範囲内に収まるよう、前記小径部の高さと前記延伸部の厚さの関係が定められていることを特徴とする請求項１に記載の摩擦撹拌接合用継手。 The rotary tool has a large-diameter portion and a small-diameter portion that extends downward from the lower surface of the large-diameter portion and is press-fitted into the abutting surface, and the lower surface of the large-diameter portion reaches the upper end of the abutting portion . The relationship between the height of the small-diameter portion and the thickness of the extending portion is determined so that the tip surface of the small-diameter portion falls within the thickness range of the extending portion in a state. The joint for friction stir welding described in 1. 回転工具によって、一方の部材の端部と他方の部材の端部との突き合わせ面を摩擦撹拌接合によって接合する摩擦撹拌接合方法であって、
前記一方の部材の下面を、前記他方の部材の端部下方に形成した延伸部の上面に載置する第１の工程と、
前記一方の部材の端部と前記他方の部材の端部を突き合わせた状態で、前記延伸部の下面を定盤上に位置決め、固定する第２の工程と、
前記一方の部材の端部と前記他方の部材の端部の突き合わせ部の上端から、前記回転工具を圧入し、その先端が、前記突き合わせ面を貫通し、前記延伸部の厚さの範囲内となるように位置決めする第３の工程と、
圧入させた前記回転工具を、前記突き合わせ面に沿って移動させ、該突き合わせ面の周辺を塑性流動させて接合する第４の工程とからなる、
摩擦撹拌接合方法。 A friction stir welding method for joining the butted surfaces of the end of one member and the end of the other member by friction stir welding with a rotary tool,
A first step of placing the lower surface of the one member on the upper surface of an extending portion formed below the end of the other member;
A second step of positioning and fixing the lower surface of the extending portion on the surface plate in a state where the end portion of the one member and the end portion of the other member are abutted;
From the upper end of the butt portion of the end portion of the end portion and the other member of the one member, it is press-fitted the rotating tool, its tip, through said abutment surfaces, and the range of the thickness of the extending portion A third step of positioning so that
The press-fitted rotary tool is moved along the abutting surface, and consists of a fourth step in which the periphery of the abutting surface is plastically flowed and joined.
Friction stir welding method. 前記第４の工程の後に、前記延伸部と、前記突き合わせ面の下端の予肉部を平滑面に仕上げる第５の工程を備えたことを特徴とする請求項３に記載の摩擦撹拌接合方法。   4. The friction stir welding method according to claim 3, further comprising a fifth step of finishing the stretched portion and a pre-walled portion at a lower end of the butted surface into a smooth surface after the fourth step.