FRICTION STIR WELDING DEVICE AND METHOD OF INSERTING WELD TOOL

• Main Authors: MIYABE SHOZO, SHINOHARA SHUN, ISHIGURO KOICHI, FUNAHARA KOHEI
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

To provide a highly reliable friction stir welding device capable of inserting a weld tool in an appropriate plumb downward direction (Z-axis downward direction) even when the surface of a member to be welded is not flat due to uneven plate thickness or waviness.SOLUTION: A friction stir welding device includes: a device body; a Z-axis vertical movement drive motor; a spindle; a weld head; a weld tool; and a spindle motor for rotating the weld tool at a predetermined rotating rate. The device body: sets a target load rate of the spindle motor and a target drive-in amount of the Z-axis vertical movement drive motor; drives the Z-axis vertical movement drive motor to move the spindle in the Z-axis downward direction; starts an insertion process to insert the weld tool into the member to be welded while rotating it at a predetermined rotating rate by the spindle motor; and terminates the insertion process when either a first insertion process termination condition, which is set based on the target load rate, or a second insertion process termination condition, which is set based on the target drive-in amount, is satisfied.SELECTED DRAWING: Figure 4 【課題】板厚の不均一やうねり等により被接合部材の表面が平坦でない場合であっても、接合ツールを適正な鉛直下方向（Ｚ軸下方向）の位置に挿入可能な信頼性の高い摩擦攪拌接合装置を提供する。【解決手段】装置本体と、Ｚ軸上下動駆動モータと、主軸と、接合ヘッドと、接合ツールと、記接合ツールを所定の回転数で回転させる主軸モータと、を備え、前記装置本体は、前記主軸モータの目標負荷率と前記Ｚ軸上下動駆動モータの目標追込み量とを設定し、前記Ｚ軸上下動駆動モータを駆動して前記主軸をＺ軸下方向に下降動作させ、前記主軸モータにより所定の回転数で回転させながら前記接合ツールを前記被接合部材に挿入する挿入処理を開始し、前記目標負荷率に基づいて設定する第一の挿入処理終了条件、または、前記目標追込み量に基づいて設定する第二の挿入処理終了条件、のいずれかが成立した場合、前記挿入処理を終了することを特徴とする。【選択図】図４