发明名称 TOOTH PROFILE FORMING METHOD AND ITS DEVICE
摘要 PROBLEM TO BE SOLVED: To provide a tooth profile forming method and its device which can form a tooth profile on a hole part of a work by forging, and can improve the dimensional accuracy of the inner diameter of the hole part. SOLUTION: The hole part 51 of the work 16 is inserted to a punch 40 fixed to a body part 12. The work 16 is lightly pressed in a spline part 48 formed to the punch 40 under the pressing action of an upper die 72. A spline groove 84 is formed on the hole part 51 of the work 16. Also, after the spline groove 84 is formed on the work 16, the lower face on the inner peripheral side of the work 16 is held by a second lower die 54, and the upper face on the outer peripheral side of the work 16 is pressed by the upper die 72. Accordingly, the dimensional accuracy of the inner diameter of the hole part 51 of the work 16 can be secured. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2004344930(A) 申请公布日期 2004.12.09
申请号 JP20030144929 申请日期 2003.05.22
申请人 HONDA MOTOR CO LTD 发明人 KIHARA TAKASHI;UEHARA YOICHI
分类号 B21K1/30;B21J5/12;(IPC1-7):B21K1/30 主分类号 B21K1/30
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