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    • 4. 发明申请
    • Method of Assembling a Drill Bit with a Jack Element
    • 用杰克元件组装钻头的方法
    • US20080099243A1
    • 2008-05-01
    • US11553651
    • 2006-10-27
    • David R. HallFrancis E. LeanyJoe FoxTyson J. Wilde
    • David R. HallFrancis E. LeanyJoe FoxTyson J. Wilde
    • E21B10/00
    • E21B10/54
    • A method of assembling a drill bit with a bit body intermediate a shank and a working face with a plurality of blades comprised of at least one cutting element. The working face also comprising a jack element disposed within a pocket that may be substantially coaxial with the axis of rotation of the drill bit. The jack element may comprise an abrasion resistant material comprised of a material selected from the following including natural diamond, polycrystalline diamond, boron nitride, tungsten carbide or combinations thereof The jack element may be press fit within a pocket that is brazed within a receptacle of the drill bit such that it is substantially centered coaxial to the rotation of the drill bit.
    • 一种组装钻头的方法,所述钻头具有在柄部和工作面之间的钻头体,所述钻头体具有由至少一个切割元件构成的多个叶片。 工作面还包括设置在凹槽内的千斤顶元件,其可以与钻头的旋转轴线基本上同轴。 千斤顶元件可以包括由以下材料组成的耐磨材料,包括天然金刚石,多晶金刚石,氮化硼,碳化钨或其组合。千斤顶元件可以压配合在一个凹槽中,钎焊在 钻头使得其基本上与钻头的旋转同心。