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    • 1. 发明专利
    • Drilling tool
    • 钻孔工具
    • JP2014177810A
    • 2014-09-25
    • JP2013052244
    • 2013-03-14
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/18
    • E21B10/602E21B7/20E21B10/18E21B10/43E21B10/56E21B10/64
    • PROBLEM TO BE SOLVED: To allow fluid and drilling waste to be efficiently collected into a discharge ditch, a drilling work to be proceeded with high efficiency and stability, and an influence on a ground around a drilled hole to be restricted.SOLUTION: An inner bit 3 includes a supply hole opening to a tip of the inner bit 3 and discharge grooves 14 formed in an outer peripheral surface of the inner bit 3 and extending in the axial direction. The supply hole includes tip blow holes 15 opening to a front end face of the tip of the inner bit 3 and outer peripheral blow holes 16 opening to the outer peripheral surface of the tip of the inner bit 3. Outer peripheral grooves 19 communicating the outer peripheral blow holes 16 with the discharge grooves 14 are formed in the outer peripheral surface of the inner bit 3, and the outer peripheral grooves 19 are covered by ring bits from the outside in a radial direction and extend gradually toward a base end side in the axial direction while directed around the axis, from the outer peripheral blow holes 16 toward the discharge grooves 14.
    • 要解决的问题:为了使流体和钻井废物有效地收集在排水沟中,钻井工作将以高效率和稳定的方式进行,并且对钻孔周围的地面产生影响将受到限制。解决方案:内部 位3包括通向内钻头3的尖端的通孔和形成在内钻头3的外周表面中并在轴向方向上延伸的排放槽14。 供给孔包括通向内钻头3的前端的前端面的开口孔15和向内钻头3的前端的外周面开口的外周吹出孔16。 在内钻头3的外周面上形成具有排出槽14的周边吹孔16,外周槽19从外侧沿径向被环状钻头覆盖,并在 轴向,从外周吹出孔16向排出槽14排列。
    • 3. 发明专利
    • Drilling bit
    • 钻头
    • JP2012127062A
    • 2012-07-05
    • JP2010277293
    • 2010-12-13
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • OTA HIROSHIHISADA KIMIYA
    • E21B10/00
    • PROBLEM TO BE SOLVED: To provide a drilling bit capable of efficiently discharging cuttings around a central axis in the tip surface of a bit body so as to increase drilling speed.SOLUTION: A drilling bit 10 is provided with a cylindrical bit body 1 which is rotated around a central axis O, a plurality of drilling chips 3 protrusively formed on a tip surface 2 of the bit body 1 and a discharge groove 4 which is recessed from the tip surface 2 of the bit body 1 and which is formed so as to be extended in the radial direction. At least one portion of the discharge groove 4 is arranged in a rotational locus Caround the central axis O of an innermost peripheral chip 31A disposed closest to the central axis O of the bit body 1, among the drilling chips 3.
    • 要解决的问题:提供一种钻头,其能够有效地在钻头体的尖端表面中的中心轴周围排出切屑,以提高钻削速度。 解决方案:钻头10设置有围绕中心轴线O旋转的圆柱形钻头体1,突出地形成在钻头体1的尖端表面2上的多个钻削切屑3和排出槽4, 从钻头体1的尖端表面2凹陷并且形成为沿径向延伸。 排出槽4的至少一部分围绕最靠近钻头的中心轴线O设置的最内周边芯片31A的中心轴O的旋转轨迹C 1 主体1,钻井芯片3。版权所有(C)2012年,JPO&INPIT
    • 4. 发明专利
    • 掘削ビット
    • 钻头
    • JP2014196655A
    • 2014-10-16
    • JP2014021674
    • 2014-02-06
    • 三菱マテリアル株式会社Mitsubishi Materials Corp
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/36
    • E21B10/26E21B10/38E21B10/60
    • 【課題】掘削孔を形成するときに繰り粉排出性能の低下を招くことがないとともに、所定の深さまで掘削孔が形成された後は確実かつ効率的にビット本体を掘削孔から引き抜いて回収することが可能な掘削ビットを提供する。【解決手段】軸線O回りに回転させられるビット本体11の先端部に後端部よりも大径のリーミング部13が形成されていて、このリーミング部13の先端部に掘削チップ15が配設されており、リーミング部13の外周部には軸線O方向に延びる繰り粉溝17が形成されるとともに、リーミング部13の外周部から後端部にかけては繰り粉溝17に連通する連通溝18が形成されている。【選択図】図1
    • 要解决的问题:提供一种在钻孔时不会导致污泥排放性能劣化的钻头,并且可以在钻孔挖出之后从钻孔确定地有效地抽出并收集钻头主体 达到规定的深度。解决方案:在沿着轴线O旋转的钻头主体11的末端处形成有比直径后端大的扩孔部13,钻孔片15布置在扩孔部的顶端 如图13所示,在扩孔部13的外周形成有向轴线O方向延伸的污泥槽17,并且在污泥槽17的后端从扩孔的外周形成有连通槽18 第13部分
    • 5. 发明专利
    • Screw joint structure of excavation tool, and excavation tool
    • 挖掘工具的螺旋结构和挖掘工具
    • JP2014189991A
    • 2014-10-06
    • JP2013064851
    • 2013-03-26
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B17/042
    • PROBLEM TO BE SOLVED: To provide a screw joint structure of an excavation tool that enables an unskilled operator to easily recognize the use limit of a screw of the screw joint structure and securely prevents the tool from being broken, and the excavation tool using the same.SOLUTION: There is provided a screw joint structure 1 of an excavation tool that connects a drilling bit and a drilling rod, drilling bits 2, 3, or a drilling rod and a coupling to each other, and is constituted by threadably engaging a male screw 5 having a male screw part 6 formed thereon and a female screw 21 having a female screw part 2 formed thereon with each other. The female screw 21 has a peripheral wall part 23 having the female screw part 22 formed at an inner periphery, and the peripheral wall part 23 is provided with a first index part 31. The male screw 5 is provided with a second index part 32 arranged at a different peripheral position from the first index part 31 in a state in which the male screw 5 and female screw 21 engage each other, and when the male screw 5 and female screw 21 rotate relatively in a peripheral direction due to the abrasion of screws, the positions of the first index part 31 and second index part 32 along the peripheral direction overlap each other.
    • 要解决的问题:提供一种挖掘工具的螺纹接头结构,使得不熟练的操作者能够容易地识别螺纹接头结构的螺钉的使用极限,并可靠地防止工具破裂,并且使用其的挖掘工具 。解决方案:提供了一种挖掘工具的螺纹接头结构1,其将钻头和钻杆,钻头2,3或钻杆和联接件相互连接起来,并且由螺纹接合一个公头 具有形成在其上的外螺纹部分6的螺钉5和在其上形成有内螺纹部分2的内螺纹21。 内螺纹21具有在内周形成有内螺纹部22的周壁部23,周壁部23设置有第一折痕部31.外螺纹5设置有第二折索部32, 在外螺纹5和内螺纹21彼此接合的状态下,在与第一折痕部31不同的周边位置处,并且当外螺纹5和内螺纹21由于螺钉的磨损而在周向上相对旋转时 第一折射部31和第二折射部32沿着周向的位置重叠。
    • 6. 发明专利
    • Screw joint structure of excavation tool, and excavation tool
    • 挖掘工具的螺旋结构和挖掘工具
    • JP2014189990A
    • 2014-10-06
    • JP2013064801
    • 2013-03-26
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B17/042E21B10/36
    • PROBLEM TO BE SOLVED: To provide a screw joint structure of an excavation tool that enables an unskilled operator to easily recognize the use limit of a screw of the screw joint structure and securely prevents the tool from being broken, and the excavation tool using the same.SOLUTION: There is provided a screw joint structure 1 of an excavation tool that connects a drilling bit and a drilling rod, drilling bits, or the drilling rod and a coupling to each other, and is constituted by threadably engaging a male screw 5 having a male screw part 6 formed thereon and a female screw 21 having a female screw part 22 formed thereon with each other. The female screw 21 has a skirt part 23 having the female screw part 22 formed at an inner periphery, and the skirt part 23 has a detection hole 27 formed to be open at an outer periphery of the skirt part 23 and to extend toward the female screw part 22, a bottom surface 28 of the detection hole 27 being arranged in the proximity to the female screw part 22 without being open in the female screw 21.
    • 要解决的问题:提供一种挖掘工具的螺纹接头结构,使得不熟练的操作者能够容易地识别螺纹接头结构的螺钉的使用极限,并可靠地防止工具破裂,并且使用其的挖掘工具 。解决方案:提供了一种挖掘工具的螺纹接头结构1,该挖掘工具将钻头和钻杆,钻头或钻杆和联接件彼此连接起来,并且通过与具有 形成在其上的阳螺纹部6和形成有内螺纹部22的内螺纹21。 内螺纹21具有在内周形成有内螺纹部22的裙部23,裙部23具有形成为在裙部23的外周开口的检测孔27,朝向阴部 螺纹部分22,检测孔27的底表面28布置在阴螺纹部分22附近,而不在阴螺纹21中打开。
    • 7. 发明专利
    • 掘削ビット及びこれに用いられる掘削チップ
    • 钻孔钻头和钻孔提示
    • JP2014196615A
    • 2014-10-16
    • JP2013072675
    • 2013-03-29
    • 三菱マテリアル株式会社Mitsubishi Materials Corp
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/36
    • 【課題】掘削チップの突出量を大きく確保して再研磨の回数を増大させつつ、削孔中に掘削チップが折損等するような事態を防止でき、工具寿命を延長できること。【解決手段】ビット本体2の工具先端面5に複数の掘削チップ10が突設された掘削ビットであって、掘削チップ10は、ビット本体2に埋め込まれる柱状のチップ本体部11と、半球状をなすチップ刃部12と、チップ本体部11とチップ刃部12との連結部分に形成される稜線部13とを備え、チップ刃部12の外面には、稜線部13からチップ先端側へ向かうに従い漸次チップ径方向の内側へ向けて傾斜するテーパ状の傾斜面15と、傾斜面15のチップ先端側に配置され半球面状をなす刃先面14とが形成され、刃先面14の半径中心が稜線部13よりもチップ先端側に配置され、掘削チップ10の稜線部13と、ビット本体2の工具先端面5とのチップ中心軸C方向に沿う距離Lが、1.5mm以下である。【選択図】図4
    • 要解决的问题:通过确保钻头的大投影量,通过在钻孔期间防止钻头的破裂等情况,同时提高再抛光频率,延长刀具寿命。解决方案:在 钻头,多个钻头10突出在钻头体2的刀具端表面5上,并且钻头10包括嵌入钻头体2中的柱状末端主体部分11,形成半球形的尖端刀片12 并且形成在前端部11和前端部12之间的连接部分中的棱线部13以及尖端部12的外表面形成有锥形倾斜面15,其朝向尖端径向内侧逐渐倾斜 朝向棱线部13的前端侧的方向以及设置在倾斜面15的前端侧的边缘面14形成半球状,并且边缘面14的径向中心配置在前端侧mor e,并且在钻头1的棱线部13与钻头体2的刀具端面5之间的尖端中心轴C方向的距离L为1.5mm以下。
    • 8. 发明专利
    • Drill bit
    • 钻头
    • JP2014185478A
    • 2014-10-02
    • JP2013062065
    • 2013-03-25
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • NAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/56E21B10/52
    • PROBLEM TO BE SOLVED: To provide a long-lifetime drilling bit capable of suppressing abrasion of a drilling chip due to contacting with sediment accumulated, especially, on a hole bottom of a drilling hole without using a large-diameter drilling chip nor a drilling chip of harder material.SOLUTION: A drilling chip 4 is fitted in a fitting hole 1A formed in a tip part of a bit body 1 by inserting a rear end part of the drilling chip 4, a recessed groove 7 which is open at the tip part of the bit body 1 is formed in at least one of an outer peripheral surface of the rear end part of the drilling chip 4 and an inner peripheral surface of the fitting hole 1A, and a fluid supply hole 5 is formed in the bit body 1 and communicates with the recessed groove 7.
    • 要解决的问题:提供一种长寿命的钻头,其能够在不使用大直径钻屑或钻屑的情况下,特别是在钻孔的孔底部与积聚的沉积物接触而抑制钻屑的磨损 更硬的材料。解决方案:钻头芯片4通过插入钻屑4的后端部而嵌入形成在钻头体1的末端部分的装配孔1A中,凹槽7在尖端部分开口 钻头体1的后端部的外周面和嵌合孔1A的内周面中的至少一方形成在钻头体1内的流体供给孔5 并与凹槽7连通。
    • 9. 发明专利
    • 掘削ビット
    • 钻头
    • JP2014196616A
    • 2014-10-16
    • JP2013072676
    • 2013-03-29
    • 三菱マテリアル株式会社Mitsubishi Materials Corp
    • TANAKA KUNIHIKONAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/56
    • 【課題】ダイヤモンド層によって摩耗による寿命の延長を図るとともに、掘削チップによる破砕性を確保しつつ、特に母材が露出する掘削チップ後端部の折損を防ぐ。【解決手段】ビット本体1の先端部外周に外周側に向かうに従い後端側に向けて傾斜するゲージ面2が形成されるとともに、このゲージ面2よりも内周側のビット本体1先端面には先端側を向くフェイス面3が形成され、フェイス面3に植設される掘削チップ8のフェイス面3から突出する先端部には、先端側に向けて延びるチップ中心線Cに沿った断面において先端側に向かうに従い曲率半径が段階的に小さくなる凸曲線状をなす少なくとも2段の凸曲面部9A、9Bが形成され、少なくとも最先端の段の凸曲面部9Aの表面には、掘削チップ8の母材11よりも硬質なダイヤモンド層10が形成される。【選択図】図3
    • 要解决的问题:由于金刚石层的磨损而延长使用寿命,并且防止基材暴露的钻头末端的断裂,同时确保钻头的破碎性能。解决方案:测量表面2倾斜 在钻头体1的前端部外周形成有朝向外周侧的后端侧,并且在钻头体1的内周侧的前端面上形成有朝向前端侧的面面3 并且至少两级的凸曲面部9A,9B形成为沿着尖端中心线C的截面向顶端侧的曲率半径逐渐变小的凸曲面状, 尖端侧形成在从植入面表面3的钻头5的表面3突出的前端部,并且形成有比钻头8的基材11硬的金刚石层10 的凸曲线 d表面部分9A至少在前端上。
    • 10. 发明专利
    • Drill bit
    • 钻头
    • JP2014185477A
    • 2014-10-02
    • JP2013062064
    • 2013-03-25
    • Mitsubishi Materials Corp三菱マテリアル株式会社
    • TANAKA KUNIHIKONAKAMURA KAZUYOSHIOTA HIROSHI
    • E21B10/18
    • PROBLEM TO BE SOLVED: To provide a long-lifetime drilling bit capable of suppressing abrasion of a drilling chip due to contact with sediment accumulated, especially, on a hole bottom of a drilling hole without using a large-diameter drilling chip nor a drilling chip of harder material.SOLUTION: A drilling chip 4 is arranged in a projecting state at a tip part of a bit body 1, a through hole 4A is formed in the drilling chip 4 from the bit body 1 to be open at a tip part of the drilling chip 4, and a fluid supply hole 5 is formed in the bit body 1 and communicates with the through hole 4A of the drilling chip 4.
    • 要解决的问题:提供一种长寿命的钻头,其能够在不使用大直径钻屑或钻屑的情况下,特别是在钻孔的孔底部积聚的沉积物的接触而抑制钻屑的磨损 较硬的材料。解决方案:钻头芯片4在钻头体1的尖端处以突出状态布置,钻孔芯片4中的钻头体1形成有通孔4A,以在钻头体1的顶端部分开口 钻头芯片4和流体供给孔5形成在钻头体1中,并与钻屑4的通孔4A连通。