Method for drilling hollow components
    21.
    发明授权
    Method for drilling hollow components 有权
    中空部件的钻孔方法

    公开(公告)号:US06362446B1

    公开(公告)日:2002-03-26

    申请号:US09366309

    申请日:1999-08-02

    IPC分类号: B23H100

    摘要: An apparatus for drilling cooling holes through a wall of a hollow component is disclosed. First, a laser drill is used for drilling at least one rough blind hole within a component wall, for example a turbine airfoil, so as to retain a residual bottom plate portion. Next, an electro discharge machine (EDM), for example a rotating EDM or plunge EDM, is used for finishing at least one rough blind hole so as to create at least one finished hole and breaking through the bottom plate portion.

    摘要翻译: 公开了一种用于通过中空部件的壁钻出冷却孔的装置。 首先,使用激光钻孔在组件壁(例如涡轮机翼型)内钻出至少一个粗糙盲孔,以便保持残留的底板部分。 接下来,使用放电机(EDM),例如旋转式EDM或者插入式EDM来完成至少一个粗盲孔,以便产生至少一个成品孔并穿过底板部分。