To provide a vehicle body frame for a motorcycle which includes a head pipe having good dimensional accuracy. A head pipe includes a left half which is obtained by die forming, a right half which is obtained by die forming, and beads with which the right half is integrated with the left half by laser welding. The head pipe is formed by joining the left half and the right half to each other with the first and second beads which are laser weld beads. Laser weld beads are significantly smaller in bead width than arc weld beads, and therefore their shrinkage after their solidification is significantly smaller. As a result, a head pipe having good dimensional accuracy is obtained.


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    Titel :

    Vehicle body frame for a saddle-ride vehicle, and motorcycle including same


    Beteiligte:
    MATSUO TOMOYA (Autor:in) / INOUE YUSUKE (Autor:in)

    Erscheinungsdatum :

    03.05.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B62K Fahrräder , CYCLES



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