Spinning method and spinning apparatus

    公开(公告)号:US10239106B2

    公开(公告)日:2019-03-26

    申请号:US14781151

    申请日:2014-04-01

    IPC分类号: B21D22/14 B21D22/16 B21D22/18

    摘要: A spinning method includes supporting a supported portion of a cylindrical work by a work supporting portion; pressing a first roller of a spinning head against a processed portion of the work while revolving the first roller; and performing a forming process that points a tube axis of the processed portion of the work in a given direction by pressing the first roller and a second roller in which a plane of revolution thereof is provided in a different position, in a rotational axis direction of a spindle of the spinning head, than a plane of revolution of the first roller, while revolving the first roller and the second roller, and moving the work supporting portion relative to the spinning head or moving the spinning head relative to the work supporting portion, while the first roller and the second roller work in cooperation with each other to retain the work.