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公开(公告)号：US4172395A
公开(公告)日：1979-10-30
申请号：US931230
申请日：1978-08-07
申请人： Wilbur S. Keller
发明人： Wilbur S. Keller
CPC分类号： E21B10/22 , B22F7/06 , B23P15/28 , F16C33/64 , F16C2352/00 , Y10T29/49705 , Y10T29/49709
摘要： A rolling cone earth boring bit is produced having a bearing surface that has been infiltrated to a controlled depth. A groove is machined in one of the bearing members. The bearing member is placed in a die and an alloy powder material is pressed into the groove recess thereby producing a porous matrix for the bearing element. The bearing element is sintered to provide a porosity within the range of 10% to 20%. An anti-galling material is infiltrated into said porous matrix bearing element. The porous matrix bearing element is hardened resulting in a high-strength bearing that will provide performance with high loads at low RPM or high RPM.
摘要翻译： 制造了具有已经渗透到受控深度的支承表面的滚动钻孔钻头。 在其中一个轴承部件中加工有槽。 将轴承构件放置在模具中，并将合金粉末材料压入槽凹槽中，从而产生用于支承元件的多孔基体。 轴承元件被烧结以提供在10％至20％的范围内的孔隙率。 防磨损材料渗透到所述多孔基体承载元件中。 多孔基体轴承元件被硬化，产生高强度轴承，其将以低RPM或高RPM提供高负载的性能。
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公开(公告)号：US4058177A
公开(公告)日：1977-11-15
申请号：US775226
申请日：1977-03-07
摘要： An asymmetric gage row insert provides a larger amount of wall contacting surface thereby decreasing the wear on the gage insert and increasing the ability of the earth boring apparatus to maintain a full gage hole. The insert has a shape prior to assembly onto the earth boring apparatus that includes a base integrally joined to an asymmetric head. The base is mounted in a socket in the earth boring apparatus. The head projects from the earth boring apparatus and includes an extended gage cutting surface. The gage cutting surface is the largest plane surface on the head. The gage cutting surface contacts the wall of the hole with the majority of the length of its extended surface and with the same angle as the gage angle of the bit.
摘要翻译： 不对称量具行插件提供更大量的壁接触表面，从而减小计量插入件上的磨损，并增加镗孔设备保持完整的测量孔的能力。 插入件在组装到钻孔设备之前具有形状，其包括与非对称头部整体连接的基座。 基座安装在钻孔设备的插座中。 头部从钻孔设备突出，并包括扩展的切口表面。 量具切割表面是头部上最大的平面。 量规切割表面以其延伸表面的大部分长度与钻头的量具角度相同的角度接触孔的壁。
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公开(公告)号：US4086973A
公开(公告)日：1978-05-02
申请号：US747446
申请日：1976-12-03
摘要： An asymmetric insert has a formation contacting crest thereby decreasing the loading on the insert and increasing the lifetime of the cutter. The insert has a shape prior to assembly in the cutter that includes a base integrally joined to an asymmetric head. The base is mounted in a socket in the cutter body. The head projects from the surface of the cutter and includes a crest positioned to contact the formations with substantially its entire length.
摘要翻译： 非对称插入件具有形成接触的顶部，从而减小插入件上的负载并增加切割器的寿命。 插入件在组装在切割器中之前具有形状，其包括整体地连接到不对称头部的基部。 基座安装在刀体内的插座中。 头部从切割器的表面突出并且包括定位成基本上与其整体长度接触的顶部的顶部。
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公开(公告)号：US4040680A
公开(公告)日：1977-08-09
申请号：US720716
申请日：1976-09-07
申请人： Wilbur S. Keller
发明人： Wilbur S. Keller
CPC分类号： F16C33/6603 , E21B10/22 , F16C33/58 , F16C33/62 , F16C33/6696 , F16C2352/00
摘要： Galling in the ball bearing raceway of a rotary rock bit is reduced even when the thrust bearings of the rock bit have worn to the point that the ball bearings are loaded by out thrust. The radius of the ball bearing raceway in the bearing pin and/or the cutter includes an inlay of anti-galling material. The anti-galling material insures that any material worn from the raceway will not harm the other bearing elements.
摘要翻译： 即使当岩石钻头的推力轴承磨损到滚珠轴承通过推力加载的点时，旋转钻头的滚珠轴承滚道中的加工也减小。 轴承销和/或切割器中的滚珠轴承滚道的半径包括防磨损材料的嵌体。 防磨损材料确保从滚道磨损的任何材料不会损害其他轴承元件。
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公开(公告)号：US4181185A
公开(公告)日：1980-01-01
申请号：US939312
申请日：1978-09-05
CPC分类号： E21B10/246
摘要： Lubricant is circulated from a lubricant reservoir to the bearings of a rotary rock bit and back to the lubricant reservoir by a lubricant circulation system that is operated by rotation of the cone cutter upon the bearing pin of the bit. A seal is positioned between the rolling cone cutter and the arm of the bit to maintain lubricant in the bearing area and to prevent fluid in the borehole from entering the bearing area. A lubricant reservoir is located in the bit body. A first passage connects the lubricant reservoir with the bearing area to channel lubricant from the lubricant reservoir to the bearing area. A second passage extends from the bearing area to the lubricant reservoir to allow lubricant to be channeled back to the lubricant reservoir. A groove system in the thrust flange of the cone cutter operates as a viscous or ram pump when rotating against the thrust flange of the bearing pin thereby providing a pumping action to circulate lubricant from the lubricant reservoir through said first passage to the bearing area and from the bearing area through said second passage back to said lubricant reservoir.
摘要翻译： 润滑剂通过润滑剂循环系统从润滑剂储存器循环到旋转岩石钻头的轴承并返回到润滑剂储存器，润滑剂循环系统通过锥形切割器在钻头的轴承销上旋转来操作。 密封件位于滚动锥形切割器和钻头的臂之间，以将润滑剂保持在轴承区域中并且防止钻孔中的流体进入轴承区域。 润滑剂储存器位于钻头体内。 第一通道将润滑剂储存器连接到轴承区域，以将润滑剂从润滑剂储存器引导到轴承区域。 第二通道从轴承区域延伸到润滑剂储存器，以允许润滑剂被引导回到润滑剂储存器。 锥形切割器的推力凸缘中的凹槽系统在与轴承销的推力凸缘旋转时作为粘性或柱塞泵进行操作，从而提供泵送作用，以将润滑剂从润滑剂储存器通过所述第一通道循环到轴承区域 通过所述第二通道的轴承区域返回到所述润滑剂储存器。
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