发明名称 |
Manufacturing Method of Cylindrical Member and Manufacturing Method of Vibration Damping Rubber Bushing Having the Cylindrical Member |
摘要 |
A method of manufacturing a cylindrical member having anti-slip projections formed on axial end faces, the method comprising the steps of: employing a roller die, which is provided with a circumferential die groove of annular form extending through a medial section in a generatrix direction of a die face defined by an integral tapered outside peripheral face, and with a plurality of sloping die grooves extending in a tapered slope direction of the die face situated to both large-diameter and small-diameter sides of the circumferential die groove; providing plastic working to the axial end face with the small-diameter side of the roller die facing towards an inner peripheral side of the cylindrical member and with the large-diameter side facing towards an outer peripheral side, by pushing the die face against the axial end face while rotating circumferentially; and forming simultaneously an annular water barrier projection and the anti-slip projections.
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申请公布号 |
US2010327486(A1) |
申请公布日期 |
2010.12.30 |
申请号 |
US20100821429 |
申请日期 |
2010.06.23 |
申请人 |
TOKAI RUBBER INDUSTRIES, LTD.;SEKIDO KIKO MFG. CO., LTD. |
发明人 |
KUKI NORIMASA;AKIYAMA YOSHIKANE;HIKOSAKA MITIHARU;KATO KAZUHIKO;SEKIDO KAZUMASA;UEDA DAISUKE;NIWA HARUMI;ITAZU HIROSHI;MIZUNO YUJI |
分类号 |
B28B1/02 |
主分类号 |
B28B1/02 |
代理机构 |
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