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    EARTH-BORING TOOLS AND COMPONENTS THEREOF AND METHODS OF ATTACHING COMPONENTS OF AN EARTH-BORING TOOL
    4.
    发明申请
    EARTH-BORING TOOLS AND COMPONENTS THEREOF AND METHODS OF ATTACHING COMPONENTS OF AN EARTH-BORING TOOL 审中-公开
    地球工具及其组件及连接地球工具组件的方法

    公开(公告)号：US20110079446A1

    公开(公告)日：2011-04-07

    申请号：US12896419

    申请日：2010-10-01

    申请人： James A. Oxford

    发明人： James A. Oxford

    IPC分类号： E21B10/36 ,  B23K20/12

    CPC分类号： B23K20/122 ,  B23K2101/20 ,  B23K2103/04 ,  B23K2103/16 ,  E21B10/42

    摘要： Methods for welding a fixed-cutter bit body to a shank of an earth-boring bit are disclosed. An interface may be formed between the fixed-cutter bit body and the shank, and the interface may be friction stir welded. In some embodiments, the fixed-cutter bit body and the shank may overlap proximate to an exterior surface of the earth-boring bit. Methods for welding at least two portions of a bit body of a roller cone bit are also disclosed. An interface may formed between the at least two portions of the bit body of the roller cone bit and the interface may be friction stir welded. Earth-boring rotary drill bits formed using such methods are also disclosed.

    摘要翻译： 公开了将固定刀头体焊接到钻头的柄的方法。 可以在固定切割钻头体和柄之间形成界面，并且界面可以是摩擦搅拌焊接的。 在一些实施例中，固定切割钻头体和柄可以在接近钻孔的外表面附近重叠。 还公开了用于焊接辊锥钻头的钻头体的至少两部分的方法。 可以在辊锥头的钻头体的至少两个部分之间形成界面，并且界面可以是摩擦搅拌焊接的。 还公开了使用这种方法形成的钻孔旋转钻头。

    METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS
    6.
    发明申请
    METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS 审中-公开
    形成地球旋转钻头的方法

    公开(公告)号：US20100276205A1

    公开(公告)日：2010-11-04

    申请号：US12831608

    申请日：2010-07-07

    申请人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    发明人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    IPC分类号： E21B10/14 ,  B22F7/04 ,  B22F1/00

    CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F7/08 ,  B22F2003/245 ,  B22F2005/001 ,  B22F2005/002 ,  B22F2998/10 ,  C22C29/08 ,  E21B10/62 ,  B22F3/1021 ,  B22F3/162

    摘要： Methods of forming earth-boring rotary drill bits include providing a bit body, providing a shank that is configured for attachment to a drill string, and attaching the shank to the bit body. Providing a bit body includes providing a green powder component having a first region having a first composition and a second region having a second, different composition, and at least partially sintering the green powder component. Other methods include providing a powder mixture, pressing the powder mixture to form a green component, and sintering the green component to a final density. A shank is provided that includes an aperture, and a feature is machined in a surface of the bit body. The aperture is aligned with the feature, and a retaining member is inserted through the aperture. An earth-boring bit includes a bit body comprising a particle-matrix composite material including a plurality of hard particles dispersed throughout a matrix material. A shank is attached to the bit body using a retaining member.

    摘要翻译： 形成钻孔旋转钻头的方法包括提供钻头体，提供构造成用于附接到钻柱的柄，以及将柄连接到钻头体上。 提供有点体包括提供具有第一组分的第一区域和具有第二不同组成的第二区域并且至少部分地烧结绿色粉末组分的绿色粉末组分。 其他方法包括提供粉末混合物，挤压粉末混合物以形成绿色组分，并将绿色组分烧结至最终密度。 提供了一种柄，其包括孔，并且特征被加工在钻头体的表面中。 孔与该特征对准，并且保持构件插入穿过该孔。 一种钻孔钻头包括一个包括一颗粒基复合材料的钻头体，该复合材料包括分散在基体材料中的多个硬颗粒。 使用保持构件将柄连接到钻头体上。

    Methods of forming earth-boring rotary drill bits
    7.
    发明授权
    Methods of forming earth-boring rotary drill bits 有权
    形成钻孔旋转钻头的方法

    公开(公告)号：US07802495B2

    公开(公告)日：2010-09-28

    申请号：US11271153

    申请日：2005-11-10

    申请人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    发明人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    IPC分类号： B21K5/04 ,  E21B10/54

    CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F7/08 ,  B22F2003/245 ,  B22F2005/001 ,  B22F2005/002 ,  B22F2998/10 ,  C22C29/08 ,  E21B10/62 ,  B22F3/1021 ,  B22F3/162

    摘要： Methods of forming earth-boring rotary drill bits include providing a bit body, providing a shank that is configured for attachment to a drill string, and attaching the shank to the bit body. Providing a bit body includes providing a green powder component having a first region having a first composition and a second region having a second, different composition, and at least partially sintering the green powder component. Other methods include providing a powder mixture, pressing the powder mixture to form a green component, and sintering the green component to a final density. A shank is provided that includes an aperture, and a feature is machined in a surface of the bit body. The aperture is aligned with the feature, and a retaining member is inserted through the aperture. An earth-boring bit includes a bit body comprising a particle-matrix composite material including a plurality of hard particles dispersed throughout a matrix material. A shank is attached to the bit body using a retaining member.

    摘要翻译： 形成钻孔旋转钻头的方法包括提供钻头体，提供构造成用于附接到钻柱的柄，以及将柄连接到钻头体上。 提供有点体包括提供具有第一组分的第一区域和具有第二不同组成的第二区域并且至少部分地烧结绿色粉末组分的绿色粉末组分。 其他方法包括提供粉末混合物，挤压粉末混合物以形成绿色组分，并将绿色组分烧结至最终密度。 提供了一种柄，其包括孔，并且特征被加工在钻头体的表面中。 孔与该特征对准，并且保持构件插入穿过该孔。 一种钻孔钻头包括一个包括一颗粒基复合材料的钻头体，该复合材料包括分散在基体材料中的多个硬颗粒。 使用保持构件将柄连接到钻头体上。