PROBLEM TO BE SOLVED: To provide a laser welding method and a laser welder that enable water-tight welding of a workpiece with good working efficiency.SOLUTION: This laser welding method includes: an arrangement process of overlapping an end 16 of an outer plate 13 with a vehicle outer surface (main surface) 14a of a doorway frame (first workpiece) 12; and a welding process of forming a continuous laser welded portion W2 along an overlapped portion P between the vehicle outer surface 14a of the doorway frame 12 and an end surface 16a of the end 16 side of the outer plate 13 by using a hand torch type laser welder 1. In the welding process, a contact tip 7A that has a projecting portion 21 comprising a first surface 23 coming into contact with the vehicle outer surface 14a of the doorway frame 12 and a second surface 24 coming into contact with the end surface 16a of the outer plate 13 is applied to a torch portion 4 of the laser welder 1 to perform laser welding between the vehicle outer surface 14a and the end surface 16a.SELECTED DRAWING: Figure 5

    【課題】良好な作業性でワークを水密に溶接できるレーザ溶接方法及びレーザ溶接装置を提供する。【解決手段】このレーザ溶接方法は、出入口枠(第1のワーク)12の車両外側面(主面)14aに外板13の端部16を重ね合わせる配置工程と、ハンドトーチ型のレーザ溶接機1を用い、出入口枠12の車両外側面14aと外板13の端部16側の端面16aとに重ね合わせ部分Pに沿って連続的なレーザ溶接部W2を形成する溶接工程と、を備え、溶接工程において、出入口枠12の車両外側面14aに接する第1面23と、外板13の端面16aに接する第2面24とによって構成される凸状部21を有する第1のコンタクトチップ7Aをレーザ溶接機1のトーチ部4に適用して車両外側面14aと端面16aとのレーザ溶接を行う。【選択図】図5


    Access

    Download


    Export, share and cite



    Title :

    LASER WELDING METHOD AND LASER WELDER


    Additional title:

    レーザ溶接方法及びレーザ溶接機


    Contributors:

    Publication date :

    2017-01-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B23K Löten , SOLDERING OR UNSOLDERING / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



    Plastic welder

    Buckley, J. D. / Fox, R. L. / Swain, R. J. | NTRS | 1980


    Compact Pinch Welder

    Starck, Thomas F. / Brennan, Andrew D. | NTRS | 1990


    Tube-welder aids

    Weaver, J. F. | NTRS | 1980


    Giant-electrode welder

    Atkins, B. R. / Chihoski, R. A. / Yashiro, F. | NTRS | 1979


    Compact Pinch Welder

    Morgan, Gene E. / Thomas, Clark S. | NTRS | 1991