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    • 9. 发明公开
    • Method of producing vibration-isolating bushing
    • Verfahren zur Herstellung einerschwingungsdämpfendenBuchse
    • EP1219853A2
    • 2002-07-03
    • EP01125543.7
    • 2001-10-25
    • TOYO TIRE & RUBBER CO., LTD .
    • Kawada, MichihiroTakahashi, HiroakiTadano, Hideo
    • F16F1/38
    • B21K21/12B21J9/025F16F1/3842F16F2226/04Y10T29/49668
    • A method of producing a vibration-isolating bushing with which it is possible to secure a larger area of the edge surface of an inner cylinder than in the prior art method. In upsetting one extremity (18a) of the inner cylinder (12) by cold plastic working, after a rubber elastomer (16) is secured to the outer circumference of the inner cylinder by vulcanization molding, as a jig for pressing onto the edge surface of the inner cylinder, an upsetting jig (30) whose top surface (32) is flat is used and the top surface (32) of the jig (30) is pressed onto the edge surface (20a) of the inner cylinder (12) while causing the jig to gyrate on a conical orbit centering the axis (x0) of the inner cylinder (12), whereby the outside diameter only of the extremity (18a) is enlarged while suppressing the enlarging of the inside diameter.
    • 一种制造隔振衬套的方法,通过该方法可以确保内筒的边缘表面的大面积比现有技术的方法更大。 在通过冷塑性加工使内筒(12)的一个末端(18a)镦粗时,在通过硫化成型将橡胶弹性体(16)固定到内筒的外周之后,作为用于压在内筒 使用内筒,其顶面(32)平坦的镦锻夹具(30),夹具(30)的顶面(32)被压到内筒(12)的边缘面(20a)上,同时 使得夹具在以内筒(12)的轴线(x0)为中心的圆锥轨道上旋转,由此只有末端(18a)的外径才能扩大,同时抑制内径的扩大。