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    Method of and tool for thread mill drilling
    1.
    发明公开
    Method of and tool for thread mill drilling 失效
    Methode und Werkzeug zum Gewindeschneidbohren。

    公开(公告)号：EP0237035A2

    公开(公告)日：1987-09-16

    申请号：EP87103446.8

    申请日：1987-03-10

    申请人： Turchan, Manuel C.

    发明人： Palm, Edward B.

    IPC分类号： B23G5/20 ,  B23G1/32

    CPC分类号： B23Q1/5481 ,  B23G1/34 ,  B23G5/184 ,  B23G2200/143 ,  B23G2240/08 ,  B23G2240/12 ,  B23Q11/0042 ,  Y02P70/171 ,  Y10T408/9048 ,  Y10T409/300112 ,  Y10T409/30056

    摘要： A threaded hole (20) in a work piece (22) is formed by rapidly spinning an elongated tool (24) having a drill point (64) at one end, at least one longitudinally extending flute (80) having thread milling faces (84) for milling the thread to be formed, and wherein the tool (24) is first moved axially to carry the drill point (64) against and into the workpiece (22) to form a hole (66), then is displaced radially a distance equal to the thread depth to be formed, then is moved orbitally around the hole (66) to mill threads therein, then is displaced back to the center of the hole (20) and then is retracted from the hole (20). To form a helical thread in the hole (20), the tool (24) is shifted axially one thread pitch during the orbital movement. A thread milling drill head (26) is disclosed for chucking the tool (24) and shifting it through the aforesaid movements. Fluid flow may be induced into the hole (66a) to entrain the waste or fines and carry such out of the hole, and for this purpose a passageway (l00) connects to a source (lll) of fluid pressure with a turbine blade assembly (ll0) mounted on the tool 24(a).

    摘要翻译： 该方法用于在工件中形成螺纹孔（20），并且包括提供在一端具有钻孔面（64）的细长工具（24）和沿着侧面的螺纹铣削轮廓。 工具围绕纵向轴线旋转，同时轴向移动，将钻孔面靠在工件上并形成孔。 当工具旋转时，旋转轴线径向移位等于要形成的螺纹深度的距离。 当工具旋转时，其旋转轴线围绕孔轨道移动以在壁中铣削螺纹。 旋转轴线径向旋转回到孔的中心，然后工具从孔中缩回。