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    Method of manufacturing bits, bit components and other articles of manufacture
    3.
    发明授权
    Method of manufacturing bits, bit components and other articles of manufacture 失效
    制造钻头，钻头零件和其他制品的方法

    公开(公告)号：US06209420B1

    公开(公告)日：2001-04-03

    申请号：US09135522

    申请日：1998-08-17

    申请人： Trent N. Butcher ,  Sidney L. Findley ,  Redd H. Smith

    发明人： Trent N. Butcher ,  Sidney L. Findley ,  Redd H. Smith

    IPC分类号： B21K504

    CPC分类号： E21B10/55 ,  B22F3/1055 ,  B22F3/1275 ,  B22F3/26 ,  B22F7/06 ,  B22F2005/001 ,  B22F2998/00 ,  B22F2999/00 ,  B29C64/153 ,  B29C64/165 ,  B33Y10/00 ,  B33Y80/00 ,  E21B10/46 ,  E21B10/567 ,  G05B2219/49011 ,  Y02P10/295 ,  B22F7/062

    摘要： A method of fabricating rotary-type drill bits, drilling-related structures, and other articles of manufacture. The method includes fabricating a machinable matrix, machining the matrix, and dispersing a binder material throughout the matrix. The matrix of the rotary-type drill bit may be fabricated by layered-manufacturing techniques or by disposing a particulate or powdered material into a mold and binding the particles together with a resin or by sintering. The matrix may have the desired dimensions and features, the approximate dimensions and features, or lack desired dimensions or features of a drilling-related structure or other article of manufacture. The matrix is machined to correct any anisotropies or imperfections of the matrix, to refine features of the matrix, or to define the features in the matrix. The machined matrix may be infiltrated with a binder material to define a drill bit body.

    摘要翻译： 一种制造旋转式钻头，钻井相关结构和其它制品的方法。 该方法包括制造可机加工的基体，机加工基体，以及将粘合剂材料分散在整个基质中。 旋转型钻头的基体可以通过分层制造技术或通过将颗粒或粉末材料设置在模具中并将颗粒与树脂结合或通过烧结来制造。 基体可以具有期望的尺寸和特征，近似尺寸和特征，或者缺乏与钻孔相关的结构或其他制品的期望的尺寸或特征。 加工矩阵以校正矩阵的各向异性或不完美性，以改善矩阵的特征，或者定义矩阵中的特征。 加工的基质可以用粘合剂材料渗透以限定钻头体。

    Displacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits
    10.
    发明授权
    Displacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits 有权
    位移构件和中间结构，用于形成钻孔旋转钻头的钻头体的至少一部分

    公开(公告)号：US08272295B2

    公开(公告)日：2012-09-25

    申请号：US11635432

    申请日：2006-12-07

    申请人： Redd H. Smith ,  John H. Stevens

    发明人： Redd H. Smith ,  John H. Stevens

    IPC分类号： B21K5/04

    CPC分类号： E21B10/55 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2204/00 ,  E21B10/00 ,  C22C29/08

    摘要： Displacement members for use in forming a bit body of an earth-boring rotary drill bit include a body having an exterior surface, at least a portion of which is configured to define at least one surface of the bit body as the bit body is formed around the displacement member. In some embodiments, the body may be hollow and/or porous. Methods for forming earth-boring rotary drill bits include positioning such a displacement member in a mold and forming a bit body around the displacement member in the mold. Additional methods include pressing a plurality of particles to form a body, forming at least one recess in the body, positioning such a displacement member in the recess, and sintering the body to form a bit body.

    摘要翻译： 用于形成钻头旋转钻头的位体的位移构件包括具有外表面的主体，其至少一部分构造成在钻头体周围形成时限定钻头体的至少一个表面 位移构件。 在一些实施例中，主体可以是中空的和/或多孔的。 用于形成钻孔旋转钻头的方法包括将这种位移构件定位在模具中并且在模具中的位移构件周围形成钻头体。 附加方法包括按压多个颗粒以形成主体，在主体中形成至少一个凹部，将这种位移构件定位在凹部中，并且烧结体以形成钻头体。