Method of forming a tappet in an internal combustion engine
    1.
    发明公开
    Method of forming a tappet in an internal combustion engine 失效
    Herstellungsverfahren einesStösselseiner Brennkraftmaschine

    公开(公告)号:EP0775806A1

    公开(公告)日:1997-05-28

    申请号:EP95308380.5

    申请日:1995-11-22

    申请人: FUJI OOZX INC.

    IPC分类号: F01L1/14 B22F3/16

    摘要: To manufacture a tappet in an internal combustion engine, a tappet rough body which comprises a cylindrical portion (2) with an upper wall (1) and an annular side wall (6) is moulded by press processing of metal powder, such that the upper wall (1), the cylindrical portion (2) and the annular side wall (6) become larger than the tappet to be manufactured in the axial size. After sintering the tappet rough body, it is re-compressed to form the final tappet.

    摘要翻译: 为了在内燃机中制造挺杆,包括具有上壁(1)的圆筒部(2)和环形侧壁(6)的挺杆体,通过金属粉末的冲压加工成型,使得上部 壁(1),圆柱形部分(2)和环形侧壁(6)变得大于要以轴向尺寸制造的挺杆。 烧结挺杆身体后,将其重新压缩形成最后的挺杆。

    Method of manufacturing a tappet for an internal combustion engine
    3.
    发明公开
    Method of manufacturing a tappet for an internal combustion engine 失效
    HerstellungsverfahrenfüreinenStösseleiner Brennkraftmaschine

    公开(公告)号:EP0698727A1

    公开(公告)日:1996-02-28

    申请号:EP95810122.2

    申请日:1995-02-24

    申请人: FUJI OOZX INC.

    IPC分类号: F01L1/14 B22F3/03 B22F5/00

    摘要: In a method of manufacturing a tappet for an internal combustion engine, powdered metal "P" filled in a cavity 22 of a die 21 is compressed by lower and upper punches 23 and 25 to form a body and a top wall of the tappet, and is sintered. During compression molding, frictional resistance of powdered material increases density of the upper and lower ends of the tappet, thereby improving strength and wear resistance.

    摘要翻译: 在制造用于内燃机的挺杆的方法中,填充在模具21的空腔22中的粉末状金属“P”被下冲头和上冲头23和25压缩以形成挺杆的主体和顶壁,并且 烧结。 在压缩成型时,粉末材料的摩擦阻力增加挺杆的上端和下端的密度,从而提高强度和耐磨性。