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公开(公告)号：US4741471A
公开(公告)日：1988-05-03
申请号：US40381
申请日：1987-04-20
申请人： Eric C. Sullivan
发明人： Eric C. Sullivan
CPC分类号： E21B10/20 , B23K31/10 , B23K33/004 , B23K2201/002
摘要： A method and device are shown for manufacturing rotary rock bits. The method eliminates repositioning errors in robotic welding operations by combining a cutting torch and a welding torch on a single, rotatable bracket whereby a bit can be welded at a single station without multiple rechuckings. The quality of the weld tie-in between any two intersecting seams (radial-radial or radial-axial) results where the groove for the latter seam in each pair is cut after the first seam in the pair has been welded.
摘要翻译： 示出了用于制造旋转岩石钻头的方法和装置。 该方法通过将割炬和焊炬组合在单个可旋转的支架上，从而消除了机器人焊接操作中的重新定位错误，从而可以在单个工位焊接钻头，而无需多次重新接头。 任何两个相交接缝（径向 - 径向或径向 - 轴向）之间的焊接质量的结果是，在对中的后一个接缝的槽被焊接在一对中的第一个接缝之后被切割。
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公开(公告)号：US4726432A
公开(公告)日：1988-02-23
申请号：US72315
申请日：1987-07-13
申请人： Danny E. Scott , Eric C. Sullivan
发明人： Danny E. Scott , Eric C. Sullivan
CPC分类号： E21B10/50 , B23K35/327 , C21D9/22 , Y10T29/49986
摘要： A method for manufacturing an earth boring drill bit and bit produced thereby are shown. The bit has rotatable cutters with a plurality of milled teeth, each of the teeth having opposing flanks. A first tube hardfacing is applied to a selected one of the opposing flanks, the hardfacing comprising a metallic binder with wear-resistant particles dispersed throughout the binder. The other of the opposing flanks has a second tube hardfacing applied thereto. The particle size of the wear-resistant particles differs between the first and second tube hardfacings so that the resulting difference in abrasion resistance of the tooth flanks produces a self-sharpening effect as the tooth wears.
摘要翻译： 示出了由此制造的钻孔钻头和钻头的制造方法。 该钻头具有多个铣削齿的可旋转刀具，每个齿具有相对的侧面。 将第一管表面硬化施加到所选择的相对侧面中的一个，所述表面硬化包含金属粘合剂，所述粘合剂具有分散在整个粘合剂中的耐磨颗粒。 另一个相对的侧面具有施加到其上的第二管表面硬化。 耐磨颗粒的粒径在第一和第二管硬化之间是不同的，从而当牙齿磨损时，齿面的耐磨性差异产生自磨损效果。
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3.发明授权
公开(公告)号：US4703814A
公开(公告)日：1987-11-03
申请号：US46204
申请日：1987-05-04
申请人： David M. Nguyen
发明人： David M. Nguyen
摘要： An improved earth boring bit of the type having diamond cutting elements and a fluid passageway to direct drilling fluid toward a borehole bottom during drilling, a metal nozzle with a cylindrical, threaded exterior and a noncircular throat having a minimum cross sectional dimension to receive a mating wrench and a length to resist damage from the torque required to make-up and break-out the nozzle for threads in the body of the bit.
摘要翻译： 一种改进的具有金刚石切割元件的钻孔钻头和用于在钻孔期间将钻井液引向钻孔底部的流体通道，具有圆柱形螺纹外部的金属喷嘴和具有最小横截面尺寸的非圆形喉部，以接收配合 扳手和长度，以抵抗构成和分解喷嘴在头体中的螺纹所需的扭矩的损伤。
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公开(公告)号：US4666001A
公开(公告)日：1987-05-19
申请号：US733435
申请日：1985-05-13
申请人： Bruce H. Burr
发明人： Bruce H. Burr
CPC分类号： E21B10/25 , F16J15/344
摘要： An earth boring bit having a cantilevered bearing shaft and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly, positioned between the cutter and bearing shaft of the bit, moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. The positioning of the seal groove and seal assembly in relation to the bearing surface is such that rigid face seal movement is decreased relative to axial cutter movement during drilling to enhance seal life. Preferably the ratio of rigid ring movement to axial cutter movement is substantially one half to one.
摘要翻译： 具有悬臂轴承轴和补偿器系统的地钻钻头，用于使润滑剂的压力与围绕钻头的钻井液的静水压力相等。 定位在钻头的切割器和轴承轴之间的刚性表面密封组件响应于邻近密封件的润滑剂的动态压力变化而轴向移动并且补偿邻近密封件的润滑剂中的动态压力变化。 密封槽和密封组件相对于支承表面的定位使得刚性面密封件相对于钻孔期间的轴向切割器运动而减小以增加密封寿命。 优选地，刚性环运动与轴向切割器运动的比率大致为一半到一。
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公开(公告)号：US4655851A
公开(公告)日：1987-04-07
申请号：US743449
申请日：1985-06-11
申请人： Peter J. Loos
发明人： Peter J. Loos
摘要： Disclosed herein are treatments for the manufacture of earth boring drill bits having abrasive wear resistant seal surfaces. The external surface of the bearing pin is surface treated, as by carburizing, in one region and simultaneously boronized over the remaining friction bearing region in a one step operation.
摘要翻译： 这里公开了用于制造具有磨料耐磨密封表面的钻孔钻头的处理。 轴承销的外表面通过渗碳在一个区域进行表面处理，并在一步操作中同时在剩余的摩擦支承区域上硼化。
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公开(公告)号：US4646858A
公开(公告)日：1987-03-03
申请号：US725051
申请日：1985-04-19
申请人： Robert M. Strickland
发明人： Robert M. Strickland
CPC分类号： E21B10/23 , E21B10/18 , E21B10/20 , E21B21/002
摘要： An earth boring bit of the "air cooled" type that includes an air passage access system, including a generally vertical passage with an opening on the exterior of the leg or in the shank cavity that forms part of the body of the bit. This vertical passage is accessible through the opening by removal of a core that expands or retracts by altering the pressure exerted against it by two plates and a threaded fastener.
摘要翻译： 包括空气通道进入系统的“空气冷却”型的地球钻头，其包括大致垂直的通道，其在腿的外部上具有开口，或者在形成钻头主体的一部分的柄腔中。 通过改变通过两个板和螺纹紧固件对其施加的压力来延伸或缩回的芯部，该垂直通道可通过开口接近。
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公开(公告)号：US4567343A
公开(公告)日：1986-01-28
申请号：US710000
申请日：1985-03-13
CPC分类号： B23K9/173
摘要： A welding torch is shown with a dual shield gas flow for preventing flux buildup on the weld area for welds in confined spaces. The torch has a wire conduit for receiving an advancing supply of welding wire. The wire conduit has a curved end portion for guiding the welding wire toward the weld area and has an opening through which the welding wire extends for welding. A primary gas conduit directs the flow of primary shield gas and has an open, gas dispensing end adjacent the wire conduit opening. A secondary shield gas source located rearward of the gas dispensing end directs the flow of secondary shield gas in the direction of the weld area. The secondary shield gas flow is arranged to surround the primary gas flow in the direction of the weld. The orientation of the primary gas exiting the primary gas conduit induces the flow of secondary gas to change direction to provide additional gas shielding for the weld area.
摘要翻译： 焊枪显示有双重屏蔽气流，用于防止在密封空间焊缝处焊接区域的焊剂积聚。 手电筒具有用于接收焊丝进给的电线的导线管。 导线管具有用于将焊丝引向焊接区域的弯曲端部，并且具有开口，焊丝通过该开口延伸用于焊接。 主气体导管引导主屏蔽气体的流动，并且在导线管开口附近具有开放的气体分配端。 位于气体分配端的后方的辅助屏蔽气体源引导辅助屏蔽气体在焊接区域的方向上的流动。 辅助屏蔽气体流被布置成围绕沿着焊接方向的主气流。 离开主要气体管道的主要气体的取向引起二次气体的流动改变方向，为焊接区域提供额外的气体屏蔽。
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公开(公告)号：US4559852A
公开(公告)日：1985-12-24
申请号：US625479
申请日：1984-06-28
申请人： Gerald O. Atkinson
发明人： Gerald O. Atkinson
CPC分类号： B23B23/04 , B23B31/16275 , Y10T279/26 , Y10T29/49899 , Y10T409/300112 , Y10T82/10
摘要： A method for shanking a rock bit utilizing a shank locator and a cone locator, each with tapered surfaces to engage respectively the tail stock of a lathe and the cones of a rock bit, to accurately align the body and the cones of the bit concentric with the design centerline of the bit. The lathe and cone locators each have interior conical surfaces to assure accurate, coaxial alignment of the shank end and the cone end of the bit. A compensating chuck is used to grip the cone end of the bit body and firmly hold the normally uneven surfaces while the threads are being machined.
摘要翻译： 一种用于利用柄定位器和锥定位器来摇动岩石钻头的方法，每个具有锥形表面以分别啮合车床的尾座和岩石钻头的锥体，以将钻头的主体和锥体精确对准， 设计中心线的位。 车床和锥形定位器都具有内部锥形表面，以确保刀柄端部和刀头锥端的精确，同轴对准。 使用补偿卡盘夹持钻头体的锥形端部，并且在加工螺纹时牢固地保持正常不平坦的表面。
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公开(公告)号：US4539018A
公开(公告)日：1985-09-03
申请号：US608047
申请日：1984-05-07
IPC分类号： B24D7/06 , B24D18/00 , E21B10/56 , E21B10/567 , B24B1/00
CPC分类号： E21B10/567 , B24D18/00 , B24D7/06
摘要： A method is shown for fabricating cutter elements for a drill bit, each of the cutter elements being mounted on the drill bit by a mounting stud. A plurality of composite compacts are provided, each of the compacts having an exposed abrasive diamond surface bonded to a carbide substrate portion. The exposed diamond surface is coated with a thin, metal layer, which is relatively easier to grind away in subsequent steps than the diamond surface itself. The coated surface of the compact is then ground to a depth slightly less than the depth of the diamond surface to thereby form a smoothly ground surface for the compact. The smoothly ground surface of the compact is then contacted with a heat sink while the composite compact is brazed to the mounting stud. Each mounting stud so prepared is then affixed to a suitable receiving area provided on the drill bit.
摘要翻译： 示出了用于制造用于钻头的切割器元件的方法，每个切割器元件通过安装螺柱安装在钻头上。 提供多个复合压块，每个压块具有结合到碳化物基板部分的暴露的磨料金刚石表面。 暴露的金刚石表面涂覆有薄的金属层，其在随后的步骤中比金刚石表面本身相对更容易研磨。 然后将压实体的涂覆表面研磨成略小于金刚石表面的深度的深度，从而形成用于压块的平滑的地面。 然后将压实体的平滑地面与散热器接触，同时将复合压块钎焊到安装螺柱上。 然后将如此制备的每个安装螺栓固定到设置在钻头上的合适的接收区域。
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公开(公告)号：US4753303A
公开(公告)日：1988-06-28
申请号：US23170
申请日：1987-03-09
申请人： Bruce H. Burr
发明人： Bruce H. Burr
CPC分类号： E21B10/25 , F16J15/344
摘要： An earth boring bit having a cantilevered bearing shaft and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly, positioned between the cutter and bearing shaft of the bit, moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. The positioning and sizing of resilient energizer rings in relationship to the geometries of the mating grooves between the cutter and shaft and the rigid sealing rings of the face seal assembly minimize axial seal movement relative to cutter and shaft during drilling to enhance seal life. A threaded bearing lug receives an internally threaded bearing sleeve. The journal bearing surface is approximately midway between the shaft seal groove, a portion of which is on its bearing sleeve and another portion on the cutter seal groove.
摘要翻译： 具有悬臂轴承轴和补偿器系统的地钻钻头，用于使润滑剂的压力与围绕钻头的钻井液的静水压力相等。 定位在钻头的切割器和轴承轴之间的刚性表面密封组件响应于邻近密封件的润滑剂的动态压力变化而轴向移动并且补偿邻近密封件的润滑剂中的动态压力变化。 弹性加力环的定位和尺寸与切割器和轴之间的配合槽的几何形状和面密封组件的刚性密封环的几何形状相关联，使得在钻孔期间相对于切割器和轴的轴向密封运动最小化以增强密封寿命。 带螺纹的轴承座接受内螺纹轴承套。 轴颈轴承表面大约位于轴密封槽之间的中间，轴密封槽的一部分位于其轴承套筒上，另一部分在刀具密封槽上。
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