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    • 2. 发明公开
    • CUTTING APPARATUS
    • EP3392450A1
    • 2018-10-24
    • EP17166804.9
    • 2017-04-18
    • Sandvik Intellectual Property AB
    • GARCIA, LuisSTABER, Guenther
    • E21B10/12E21D9/10E21B10/16
    • E21D9/104E21D9/102
    • A cutting head (128) for cutting apparatus (100) suitable for creating tunnels or subterranean roadways and the like. The cutting head (128) having: a rotatable cutting head body (131); a plurality of cutting units (700A,700B) mounted on the cutting head body (131), said cutting units (700A,700B) including at least first and second different types of cutting units (700A,700B), the first type of cutting unit (700A) having a first rotatable cutter (127A) comprising a first disc body (711A) and a first arrangement of buttons (710A) for abrading rock, said first buttons (710A) are mounted in a radially peripheral portion (738) of the disc body and protrude outwardly therefrom, and the second type of cutting unit (700B) having a second rotatable cutter (127B) comprising a second disc body (711B) and a second arrangement of buttons (710B) for abrading rock, said second buttons (710B) are mounted in a radially peripheral portion (738B) of the disc body and protrude outwardly therefrom; wherein the different types of cutting units (700A,700B) are different from one another by at least the arrangements of their buttons (710A,710B).
    • 9. 发明公开
    • DRILL BIT
    • Bohrer的
    • EP1514657A4
    • 2007-11-14
    • EP02736015
    • 2002-06-06
    • MIYANAGA KK
    • MIYANAGA MASAAKI
    • B23B51/00B23B51/02B28D1/14E21B10/16
    • B23B51/02B23B2226/75B23B2251/14B23B2251/207B23B2251/287B23B2251/50
    • A drill bit which can stabilize the boring work of concrete, or the like, by relaxing abrupt variation of boring state and can prevent lowering of a boring efficiency even when large chips are generated. Cutting edge parts arranged substantially radially have at least two main cutting edge parts, and at least two subcutting edge parts interposed between the main cutting edge parts in the circumferential direction, wherein the main cutting edge part comprises a main cutting edge having inner end located in the center of rotation and outer end located at the outer edge of rotational path of the cutting edge part and the subcutting edge part comprises a subcutting edge having inner end located at a part spaced apart radially outward from the center of rotation and outer end located at a position spaced apart radially inward from the outer edge of rotational path of the cutting edge part.
    • 本发明提供一种钻头,其能够通过缓和钻孔状态的突然变化来稳定混凝土等的钻孔作业,并且即使在产生大的切屑时也能够防止钻孔效率的降低。 在大致呈放射状配置的切削刃部具有至少两个主切削刃部和沿圆周方向介于主切削刃部之间的至少两个副切削刃部,主切削刃部具有:主切削刃,其内端位于 旋转中心和位于切削刃部和副切削刃部的旋转路径的外缘的外端部包括副切削刃,该副切削刃的内端位于从旋转中心向径向外侧隔开的部分处,并且外端位于 从切削刃部的旋转路径的外缘径向向内间隔开的位置。
    • 10. 发明公开
    • Method of designing a roller cone bit
    • 设计牙轮钻头的方法
    • EP1500782A3
    • 2006-04-12
    • EP04025561.4
    • 1999-08-31
    • HALLIBURTON ENERGY SERVICES, INC.
    • Chen, Shilin
    • E21B10/16E21B10/08
    • E21B10/08E21B10/16
    • Disclosed herein is a method of designing a roller cone bit, comprising the steps of:

      a) adjusting the orientation of at least one row of teeth on a cone, in dependence on an expected trajectory of said tooth through formation material at the cutting face;
      b) calculating the width of uncut rings of formation material, in dependence on the orientation of said row of teeth, and adjusting the position of said row of teeth in dependence on said calculated width; and
      c) recalculating the rotational speed of said cone, if the position of said row is changed, and accordingly recalculating said trajectory of teeth in said row.
    • 本文公开了一种设计牙轮钻头的方法,包括以下步骤:a)根据切削面处的所述穿过形成材料的所述齿的预期轨迹调整牙轮上的至少一排牙齿的取向; b)根据所述排齿的取向计算未切割的地层材料的宽度,并根据所述计算的宽度调整所述排齿的位置; 以及c)如果所述排的位置改变,则重新计算所述锥体的旋转速度,并且因此重新计算所述排中的所述牙齿的轨迹。