Method of forming a tappet body in an internal combustion engine
    1.
    发明授权
    Method of forming a tappet body in an internal combustion engine 失效
    在内燃机中形成挺杆体的方法

    公开(公告)号:US5379626A

    公开(公告)日:1995-01-10

    申请号:US127807

    申请日:1993-09-28

    IPC分类号: B21J5/02 B21K1/20 F01L1/14

    摘要: To manufacture an Al alloy tappet in an internal combustion engine, an intermediate which has a circular upper wall and a cylindrical skirt is formed in the first forging step. In the second forging step, a recess is formed on the lower surface of the upper wall. Relatively large-sized metallic structure in the first forging step is finally collapsed, thereby increasing strength and rigidity of the upper wall around the recess.

    摘要翻译: 为了在内燃机中制造Al合金挺杆,在第一锻造步骤中形成具有圆形上壁和圆筒形裙部的中间体。 在第二锻造工序中,在上壁的下表面形成有凹部。 在第一锻造步骤中相对大的金属结构最终被折叠,从而增加了围绕凹槽的上壁的强度和刚性。