Hollow drilling tool
    4.
    发明授权
    Hollow drilling tool 失效
    中空钻具

    公开(公告)号:US4966502A

    公开(公告)日:1990-10-30

    申请号:US383367

    申请日:1989-07-20

    申请人: Eugen Magyari

    发明人: Eugen Magyari

    摘要: A hollow drilling tool includes a tubular support with cutting members inserted in axially extending recesses in its leading end. The cutting members alternately project radially outwardly from and radially inwardly from the outer and inner surfaces of the support. An effective removal of drilled materials is possible by partly annular gaps between the cutting members and the borehole surface and the surface of the drilled core.

    摘要翻译: 一种中空钻具包括一个管状支撑件,其中切割构件在其前端插入轴向延伸的凹槽中。 切割构件从支撑件的外表面和内表面向外径向向外径向向外突出。 可以通过切割构件与钻孔表面和钻芯的表面之间的部分环形间隙来有效地去除钻孔材料。

    Cutter elements for hollow drill bit
    6.
    发明授权
    Cutter elements for hollow drill bit 失效
    中空钻头切割元件

    公开(公告)号:US4915182A

    公开(公告)日:1990-04-10

    申请号:US374362

    申请日:1989-06-30

    IPC分类号: B28D1/04 E21B10/44 E21B10/48

    CPC分类号: B28D1/041 E21B10/44 E21B10/48

    摘要: A hollow drill bit is formed of an axially extending tubularly-shaped support member (1) with cutter elements (2) inserted into the leading end (1a) of the support member. Each cutter member (2) has a radially outer surface (2a) and a radially inner surface (2b) with channels (2c, 2d) in each surface inclined relative to the axis of the support member (1). The channels (2c,2d) carry a flowable cooling agent to the leading end of the drill bit, and remove drillings produced by the bit from the leading end.

    摘要翻译: 空心钻头由轴向延伸的管状形状的支撑构件(1)形成,其中切割器元件(2)插入到支撑构件的前端(1a)中。 每个切割器构件(2)具有径向外表面(2a)和径向内表面(2b),每个表面中的通道(2c,2d)相对于支撑构件(1)的轴线倾斜。 通道(2c,2d)将可流动的冷却剂携带到钻头的前端,并从前端移除由钻头产生的钻孔。