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    Method of positioning bit sections for welding
    3.
    发明公开
    Method of positioning bit sections for welding 失效
    一种用于Zusammenschweissens的目的Gesteinmeissels的零件的定位方法。

    公开(公告)号：EP0080967A1

    公开(公告)日：1983-06-08

    申请号：EP82630105.3

    申请日：1982-11-05

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Atkinson, Gerald O.

    IPC: E21B10/20 ,  B23K37/04 ,  B23K15/00

    CPC classification number: B23K15/0013 ,  B23K37/0426 ,  B23K2201/002 ,  E21B10/20 ,  Y10T29/49895

    Abstract: A method of assembling sections of an earth boring bit for welding has features to assure precise bit geometry. The method includes a step of providing a hole (41) in each bit section at the centerline (35) of the 120 degree faces on the interiors of the sections. A triad (45) is constructed for use in assembly and consists of three pins (47) joined together on one end, each having an axis 120 degrees apart from the other axes of the pins. The triad (45) is positioned in the holes in the 120 degree faces when the three sections of the bit are brought together. The shank ends of the sections have holes (29) for receiving dowels located in the welding fixture. Once the sections are positioned and pinned against movement at the shank ends and at the triad, the sections are clamped, then welded.

    Fixture and method for shanking rock bits
    4.
    发明公开
    Fixture and method for shanking rock bits 失效
    安装和Gesteinsbohrkronen的刀柄方法。

    公开(公告)号：EP0167473A1

    公开(公告)日：1986-01-08

    申请号：EP85630100.7

    申请日：1985-06-27

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Atkinson, Gerald Oliver

    IPC: B23C3/00 ,  B21K5/02 ,  B23K31/00

    CPC classification number: B23B23/04 ,  B23B31/16275 ,  Y10T29/49899 ,  Y10T82/10 ,  Y10T279/26 ,  Y10T409/300112

    Abstract: A method for shanking a rock bit (15) utilizing a shank locator (21) and a cone locator (23), each with tapered surfaces to engage respectively the tail stock of a lathe and the cones (17) of a rock bit (15), to accurately align the body and the cones (17) of the bit (15) 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 (13) and the cone end of the bit (15). 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.

    Pre-set torque limiter sub
    5.
    发明公开
    Pre-set torque limiter sub 失效
    Einsatzstückmit vorher eingestellter Drehmomentbegrenzung。

    公开(公告)号：EP0151365A2

    公开(公告)日：1985-08-14

    申请号：EP84630221.4

    申请日：1984-12-31

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Farr, Albert Pike, Jr.

    IPC: E21B17/06 ,  E21B17/042 ,  F16L15/00

    CPC classification number: F16L15/003 ,  E21B17/04 ,  E21B17/042 ,  E21B17/06

    Abstract: A pre-set torque limiter sub having a pin member and a box member. The pin member is connected to a section of drill pipe and has a pin connection at one end. The box member is connected to a second section of drill pipe. The pin connection and box connection are connected together. Whenever the torque on the sub exceeds a selected amount, the pin member and the box member can rotate with respect to one another. However, whenever the torque on the sub is below the selected amount, the pin member and the box member are held rigidly together.

    Abstract translation: 具有销构件和箱构件的预设扭矩限制器。 销构件连接到钻杆的一部分并且在一端具有销连接。 箱构件连接到钻杆的第二部分。 引脚连接和箱体连接连接在一起。 只要子上的扭矩超过所选择的量，销构件和箱构件就可以相对于彼此旋转。 然而，只要sub上的转矩低于所选择的量，销构件和箱构件就会刚性地保持在一起。

    Spaced button thrust surface for earth boring bit
    6.
    发明公开
    Spaced button thrust surface for earth boring bit 失效
    Axiallagerflächemit abstehendenknopfförmigenEinsätzenfürErdbohrmeissel。

    公开(公告)号：EP0097604A2

    公开(公告)日：1984-01-04

    申请号：EP83630043.4

    申请日：1983-03-11

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Shepherd, William Leroy

    IPC: E21B10/22 ,  F16C33/26 ,  F16C17/04

    CPC classification number: F16C33/26 ,  E21B10/22 ,  F16C2352/00

    Abstract: An earth boring bit has thrust surfaces (43, 45) with enhanced cooling features. The bit has a body with three depending bearing pins (13). A cutter (37) having an axial cavity (39) is mounted on each bearing pin (15). The bearing pin (15) and the cavity (39) have one or more mating thrust surfaces (21, 23, 43, 45) that are perpendicular to the axis of the bearing pin (15). These thrust surfaces absorb outward forces that the cutter (39) imposes on the bearing pin (15). At least one of the thrust surfaces consists of a series of tungsten carbide buttons (25, 27) spaced in a circular array. These buttons have flat ends for engaging the opposite thrust surfaces (43, 45) The buttons protrude from the supporting metal, allowing cooling fluid to be circulated past to cool the thrust surfaces.

    Abstract translation: 地球钻头具有增强的冷却特征的推力表面。 该钻头有一个带有三个轴承销的主体。 具有轴向腔的切割器安装在每个轴承销上。 轴承销和空腔具有垂直于轴承销的轴线的一个或多个配合推力表面。 这些推力表面吸收切割器在轴承销上施加的向外的力。 至少一个推力表面由一系列以圆形阵列隔开的碳化钨钮组成。 这些按钮具有用于接合相对的推力表面的平坦端部。 按钮从支撑金属突出，允许冷却流体循环通过以冷却推力表面。

    Pre-set torque limiter sub
    7.
    发明公开
    Pre-set torque limiter sub 失效
    PRE-SET扭矩限制

    公开(公告)号：EP0151365A3

    公开(公告)日：1987-08-19

    申请号：EP84630221

    申请日：1984-12-31

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Farr, Albert Pike, Jr.

    IPC: E21B17/06 ,  E21B17/042 ,  F16L15/00

    CPC classification number: F16L15/003 ,  E21B17/04 ,  E21B17/042 ,  E21B17/06

    Abstract: A pre-set torque limiter sub having a pin member and a box member. The pin member is connected to a section of drill pipe and has a pin connection at one end. The box member is connected to a second section of drill pipe. The pin connection and box connection are connected together. Whenever the torque on the sub exceeds a selected amount, the pin member and the box member can rotate with respect to one another. However, whenever the torque on the sub is below the selected amount, the pin member and the box member are held rigidly together.

    Earth boring bit with pressure compensating metal face seal
    8.
    发明公开
    Earth boring bit with pressure compensating metal face seal 失效
    带压力补偿金属表面密封的接地钻头

    公开(公告)号：EP0138737A3

    公开(公告)日：1986-10-29

    申请号：EP84630156

    申请日：1984-10-12

    Applicant: HUGHES TOOL COMPANY-USA

    Inventor： Burr, Bruce Hawley

    IPC: E21B10/24 ,  F16J15/34

    CPC classification number: E21B10/25 ,  F16C21/00 ,  F16C33/72 ,  F16C2352/00 ,  F16J15/344

    Abstract: An earth boring bit (11) having a cantilevered bearing shaft (15) 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 (23), positioned between the cutter (17) and bearing shaft (15) of the bit (11), moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. This is accomplished by the positioning and sizing of resilient energizer rings in relationship to the geometries of the mating grooves between the cutter (17) and shaft (15) and the rigid sealing rings of the face seal assembly (23).

    Abstract translation: 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。 这是通过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定位和尺寸来实现的。

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