发明名称 扁平管製造方法
摘要 A method for manufacturing a flat pipe 1 with concave-convex shapes on inner and outer surfaces includes making incisions with an expanded shape of the flat pipe 1 in a metal thin plate 2 such that intermediate portions 4 (middle portions) in the expanded shape of the flat pipe 1 widthwise of the expanded shape are left uncut from the thin plate 2, machining the concave-convex shapes in a range of the expanded shape of the flat pipe 1 and raising the expanded shape of the flat pipe 1 from the thin plate 2 as cut-and-raised pieces 8 with the uncut intermediate portions 4 in between, closing tips of the cut-and-raised pieces 8 together to form an overall shape of the flat pipe 2, and separating the uncut intermediate portions 4 from the thin plate 2 to obtain the flat pipe 1.
申请公布号 JP6067327(B2) 申请公布日期 2017.01.25
申请号 JP20120237552 申请日期 2012.10.29
申请人 日野自動車株式会社 发明人 石森 崇;岡野 雅行
分类号 B21D53/06;B21D5/01;B21D51/16;F28F1/02;F28F1/42 主分类号 B21D53/06
代理机构 代理人
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