Drill bit
    3.
    发明授权
    Drill bit 有权
    钻头

    公开(公告)号:US06959775B2

    公开(公告)日:2005-11-01

    申请号:US10221087

    申请日:2001-02-14

    摘要: A drill comprising a shank part (11), which is adapted to be received in a drill holder of a drilling machine, and an opposite cutting end part (13). An intermediate fluted part (12) is provided, which defines at least one helical flute or channel (16) having a bottom surface (19) and a pair of opposite side surfaces (20) defined by the ribs or lands (17). The shape of a cross-section of the at least one flute or channel, taken at right angles to the course of the flute or channel, is such that the distance from a reference plane (24) to the bottom surface or the flute is decreasing from a central part (22) of the bottom surface towards the adjacent side surface (20) of the flute. The reference plane is at right angles to a radial line (25) extending from the longitudinal axis of the drill and through the centre of the bottom surface width. A helically extending groove (21) is formed in the middle of the central part (22) of the bottom surface (19).

    摘要翻译: 一种钻头,其包括适于容纳在钻机的钻头保持器中的柄部分(11)和相对的切割端部(13)。 提供中间槽纹部分(12),其限定具有底表面(19)的至少一个螺旋槽或通道(16)和由肋或平台(17)限定的一对相对的侧表面(20)。 所述至少一个凹槽或通道的横截面的形状与所述凹槽或通道的过程成直角,使得从参考平面(24)到底表面或凹槽的距离正在减小 从凹槽的底表面的中心部分(22)到相邻的侧表面(20)。 参考平面与从钻头的纵向轴线延伸并穿过底部表面宽度的中心的径向线(25)成直角。 螺旋形延伸的槽(21)形成在底表面(19)的中心部分(22)的中间。

    DRILLING TOOL, IN PARTICULAR SPIRAL DRILL
    4.
    发明申请
    DRILLING TOOL, IN PARTICULAR SPIRAL DRILL 审中-公开
    钻具,特别是螺旋钻

    公开(公告)号:US20090277691A1

    公开(公告)日:2009-11-12

    申请号:US12257875

    申请日:2008-10-24

    IPC分类号: E21B10/44

    摘要: In a drilling tool, in particular a spiral drill, in particular for drilling rock, comprising a tool-side fastening end, a workpiece-side cutting end and an interposed cutting part comprising at least one main helical groove extending along the cutting part, which is defined by a substantially constant helix pitch, and at least one partially cylindrical and/or partially conical helix web outer face extending along the cutting part, defined by at least one main helical groove, it is provided that a plurality of groove sections are formed in the helix web outer face, which extend transversely to the direction of the pitch of the main helical groove.

    摘要翻译: 在钻井工具中,特别是螺旋钻,特别是用于钻岩的螺旋钻,包括工具侧紧固端,工件侧切割端和插入的切割部分,其包括沿着切割部分延伸的至少一个主螺旋槽, 由基本上恒定的螺旋节距和由至少一个主螺旋槽限定的沿着切割部分延伸的至少一个部分圆柱形和/或部分圆锥形的螺旋腹板外表面限定,其中形成有多个凹槽部分 在螺旋腹板外表面中,其横向于主螺旋槽的节距的方向延伸。