ZA935007B - Cutting bit and cutting insert - Google Patents

Cutting bit and cutting insert

Info

Publication number
ZA935007B
ZA935007B ZA935007A ZA935007A ZA935007B ZA 935007 B ZA935007 B ZA 935007B ZA 935007 A ZA935007 A ZA 935007A ZA 935007 A ZA935007 A ZA 935007A ZA 935007 B ZA935007 B ZA 935007B
Authority
ZA
South Africa
Prior art keywords
cutting
bit
insert
cutting insert
cutting bit
Prior art date
Application number
ZA935007A
Other languages
English (en)
Inventor
Daniel C Sheirer
Wayne H Beach
Don C Rowlett
Original Assignee
Kennametal Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kennametal Inc filed Critical Kennametal Inc
Publication of ZA935007B publication Critical patent/ZA935007B/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Earth Drilling (AREA)
ZA935007A 1992-08-26 1993-07-12 Cutting bit and cutting insert ZA935007B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/935,956 US5429199A (en) 1992-08-26 1992-08-26 Cutting bit and cutting insert

Publications (1)

Publication Number Publication Date
ZA935007B true ZA935007B (en) 1994-03-08

Family

ID=25467967

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA935007A ZA935007B (en) 1992-08-26 1993-07-12 Cutting bit and cutting insert

Country Status (4)

Country Link
US (1) US5429199A (pl)
AU (1) AU648953B2 (pl)
PL (1) PL171784B1 (pl)
ZA (1) ZA935007B (pl)

Families Citing this family (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207646B1 (en) * 1994-07-15 2001-03-27 University Of Iowa Research Foundation Immunostimulatory nucleic acid molecules
US5697308A (en) * 1995-12-20 1997-12-16 Kennametal Inc. Seed boot having a wear resistant insert
DE19652208A1 (de) * 1995-12-20 1997-06-26 Amic Ind Ltd Bohrer
KR100329309B1 (ko) 1996-03-15 2002-08-24 생-고뱅 어브레이시브즈, 인코포레이티드 연마절삭공구및연마절삭방법
US5868125A (en) * 1996-11-21 1999-02-09 Norton Company Crenelated abrasive tool
US5975811A (en) * 1997-07-31 1999-11-02 Briese Industrial Technologies, Inc. Cutting insert cartridge arrangement
US6044919A (en) * 1997-07-31 2000-04-04 Briese Industrial Technologies, Inc. Rotary spade drill arrangement
US6026916A (en) * 1997-08-01 2000-02-22 Briese Industrial Technologies, Inc. Rotary drill arrangement
USD430578S (en) * 1998-10-08 2000-09-05 Brady William J Rotary mining bit
US6176332B1 (en) 1998-12-31 2001-01-23 Kennametal Inc. Rotatable cutting bit assembly with cutting inserts
USD424579S (en) * 1999-05-10 2000-05-09 Brady William J Rotary mining bit
US6595305B1 (en) 2000-02-15 2003-07-22 Kennametal Inc. Drill bit, hard member, and bit body
US6318279B1 (en) 2001-02-08 2001-11-20 Kennametal Inc. Seed boot attachment and wear resistant inset therefor
WO2002079415A2 (en) * 2001-03-30 2002-10-10 Lexigen Pharmaceuticals Corp. Reducing the immunogenicity of fusion proteins
US6860344B2 (en) 2001-06-25 2005-03-01 Kennametal Inc. Monolithic roof cutting bit insert
US6684968B2 (en) * 2001-06-25 2004-02-03 Kennametal Inc. Roof bit body and insert assembly
US6886645B2 (en) 2001-09-17 2005-05-03 Kennametal Inc. Liquid seal for wet roof bit
AU783965B2 (en) * 2001-12-05 2006-01-05 Sandvik Intellectual Property Ab A plate drill bit with laid back wings
USD487753S1 (en) 2002-06-03 2004-03-23 The William J. Brady Loving Trust Over-reamer drill tool for pilot bit
KR101021461B1 (ko) * 2002-07-26 2011-03-16 미쓰비시 마테리알 가부시키가이샤 초경합금제 부재와 다이아몬드제 부재의 접합 구조 및접합 방법, 굴삭 공구의 절단편, 절단 부재, 및 굴삭 공구
USD510586S1 (en) 2002-10-03 2005-10-11 Sollami Jimmie L Drill bit blade
US6817429B2 (en) 2002-10-03 2004-11-16 Jimmie Sollami Roof bit carbide blade
US6929079B2 (en) * 2003-02-21 2005-08-16 Smith International, Inc. Drill bit cutter element having multiple cusps
US6883624B2 (en) * 2003-01-31 2005-04-26 Smith International, Inc. Multi-lobed cutter element for drill bit
US20060011388A1 (en) * 2003-01-31 2006-01-19 Mohammed Boudrare Drill bit and cutter element having multiple extensions
US6915867B2 (en) * 2003-06-30 2005-07-12 Kennametal Inc. Earth penetrating rotary drill bit with helical ports
US7461709B2 (en) * 2003-08-21 2008-12-09 Smith International, Inc. Multiple diameter cutting elements and bits incorporating the same
USD524333S1 (en) 2004-04-27 2006-07-04 Brady William J Heavy duty hard rock drill tool
USD516104S1 (en) 2004-04-27 2006-02-28 The William J. Brady Loving Trust Hard rock drill tool
EP2135568B1 (en) * 2004-06-21 2011-12-07 Straumann Holding AG Method for manufacturing disposable rotary cutting tools and disposable rotary tool for dental or medical applications
USD514131S1 (en) 2004-07-08 2006-01-31 The William J. Brady Loving Trust Rock drilling tool with ovate cutters
US7168511B2 (en) 2004-09-24 2007-01-30 Kennametal Inc. Rotary drill bit having cutting insert with a notch
GB2436025B (en) * 2005-05-17 2008-02-20 Smith International Rolling cone drill bit
US7757789B2 (en) * 2005-06-21 2010-07-20 Smith International, Inc. Drill bit and insert having bladed interface between substrate and coating
US7757793B2 (en) * 2005-11-01 2010-07-20 Smith International, Inc. Thermally stable polycrystalline ultra-hard constructions
US20070119624A1 (en) * 2005-11-29 2007-05-31 Brady William J Roof drilling improvements
DE102006000081A1 (de) * 2006-02-20 2007-08-23 Hilti Ag Gesteinsbohrkopf
US7743855B2 (en) * 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
US7631709B2 (en) 2007-01-03 2009-12-15 Smith International, Inc. Drill bit and cutter element having chisel crest with protruding pilot portion
US7686106B2 (en) * 2007-01-03 2010-03-30 Smith International, Inc. Rock bit and inserts with wear relief grooves
US7798258B2 (en) * 2007-01-03 2010-09-21 Smith International, Inc. Drill bit with cutter element having crossing chisel crests
US8205692B2 (en) * 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US8821603B2 (en) * 2007-03-08 2014-09-02 Kennametal Inc. Hard compact and method for making the same
US20090035083A1 (en) * 2007-08-03 2009-02-05 Hunter David T Double tipped diamond drill bit
US9217296B2 (en) 2008-01-09 2015-12-22 Smith International, Inc. Polycrystalline ultra-hard constructions with multiple support members
US7909121B2 (en) * 2008-01-09 2011-03-22 Smith International, Inc. Polycrystalline ultra-hard compact constructions
US7959234B2 (en) 2008-03-15 2011-06-14 Kennametal Inc. Rotatable cutting tool with superhard cutting member
US7841427B2 (en) * 2008-07-18 2010-11-30 Omni Ip Ltd. Optimized central PDC cutter and method
WO2010088504A1 (en) * 2009-01-29 2010-08-05 Smith International, Inc. Brazing methods for pdc cutters
US9771760B2 (en) 2009-03-09 2017-09-26 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US8079786B2 (en) * 2009-04-22 2011-12-20 Corbin Manufacturing, Inc. Tool insert blanks and method of manufacture
US8701799B2 (en) * 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US20110068616A1 (en) 2009-09-21 2011-03-24 Kennametal Inc. Rotatable cutting tool with hard cutting member
US8881847B2 (en) 2010-01-29 2014-11-11 Kennametal Inc. Dust collecting device for a roof tool
US8584777B2 (en) 2010-06-04 2013-11-19 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US9109412B2 (en) 2010-06-04 2015-08-18 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US8567533B2 (en) * 2010-08-17 2013-10-29 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US9080400B1 (en) 2010-11-24 2015-07-14 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US8899356B2 (en) 2010-12-28 2014-12-02 Dover Bmcs Acquisition Corporation Drill bits, cutting elements for drill bits, and drilling apparatuses including the same
US8607899B2 (en) 2011-02-18 2013-12-17 National Oilwell Varco, L.P. Rock bit and cutter teeth geometries
US9010464B2 (en) * 2011-05-04 2015-04-21 Dover BMCS Acquistion Corporation Drill bits and drilling apparatuses including the same
CN102220844A (zh) * 2011-06-24 2011-10-19 中煤科工集团西安研究院 插接式金刚石复合片锚杆钻头及其连接套
US9194189B2 (en) 2011-09-19 2015-11-24 Baker Hughes Incorporated Methods of forming a cutting element for an earth-boring tool, a related cutting element, and an earth-boring tool including such a cutting element
CN104066920A (zh) * 2012-01-30 2014-09-24 山特维克知识产权股份有限公司 钻头
USD682325S1 (en) 2012-01-30 2013-05-14 Sandvik Intellectual Property Ab Drill bit
AU2013257466B2 (en) * 2012-11-15 2018-02-15 U.S. Synthetic Corporation Rotational drill bits and drilling apparatuses including the same
US20140182947A1 (en) 2012-12-28 2014-07-03 Smith International, Inc. Cutting insert for percussion drill bit
US9194187B2 (en) 2013-03-15 2015-11-24 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
DE102013205889B3 (de) 2013-04-03 2014-05-28 Kennametal Inc. Kupplungsteil, insbesondere Schneidkopf für ein Rotationswerkzeug sowie ein derartiges Rotationswerkzeug
DE102013220884B4 (de) 2013-10-15 2022-02-17 Kennametal Inc. Modulares Trägerwerkzeug sowie Werkzeugkopf
DE102014206796B4 (de) 2014-04-08 2020-10-15 Kennametal Inc. Rotationswerkzeug, insbesondere Bohrer sowie Schneidkopf für ein solches Rotationswerkzeug
DE102015211744B4 (de) 2015-06-24 2023-07-20 Kennametal Inc. Rotationswerkzeug, insbesondere Bohrer, und Schneidkopf für ein solches Rotationswerkzeug
US9937567B2 (en) 2015-10-07 2018-04-10 Kennametal Inc. Modular drill
USD798922S1 (en) * 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for rotary drill
US10071430B2 (en) 2015-10-07 2018-09-11 Kennametal Inc. Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head
USD798921S1 (en) * 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for modular drill
CA3011347A1 (en) 2016-01-13 2017-07-20 Schlumberger Canada Limited Angled chisel insert
DE102017205166B4 (de) 2017-03-27 2021-12-09 Kennametal Inc. Modulares Rotationswerkzeug und modulares Werkzeugsystem
DE102017212054B4 (de) 2017-07-13 2019-02-21 Kennametal Inc. Verfahren zur Herstellung eines Schneidkopfes sowie Schneidkopf
US10799958B2 (en) 2017-08-21 2020-10-13 Kennametal Inc. Modular rotary cutting tool
KR102869347B1 (ko) * 2018-08-02 2025-10-14 유에스 신써틱 코포레이션 Pcd 인서트를 갖는 커팅 툴, 이를 포함하는 시스템 및 관련된 방법
CN112077370B (zh) 2019-06-13 2024-10-01 肯纳金属印度有限公司 可转位钻头刀片
CN110610043B (zh) * 2019-09-10 2022-11-11 辽宁工程技术大学 一种对倾斜煤层采空区底板的破坏深度的计算方法
CN113579477B (zh) * 2021-06-27 2025-06-10 江苏华昌工具制造有限公司 一种合金碎粒烧结体的激光焊接方法
CN115703157A (zh) 2021-08-17 2023-02-17 肯纳金属印度有限公司 具有冷却剂系统的可转位钻头组件
USD1012131S1 (en) 2022-03-03 2024-01-23 Kennametal Inc. Roof bit
US12457912B2 (en) 2022-12-12 2025-11-04 Nicholas Arthur Latham Mechanical soil conditioner system

Family Cites Families (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735656A (en) * 1956-02-21 Rock drilling bit
US979319A (en) * 1909-01-15 1910-12-20 George G Mayer Mining starter-bit.
US984323A (en) * 1910-06-13 1911-02-14 Andrew C Vauclain Drilling-tool.
US2578593A (en) * 1946-10-29 1951-12-11 Phipps Orville Auger-type drill bit
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
US2650071A (en) * 1950-03-10 1953-08-25 Central Mine Equipment Company Mining drill
US2711892A (en) * 1950-10-04 1955-06-28 Frank L Fulke Coal cutting bit having carbide insert
US2756967A (en) * 1951-03-10 1956-07-31 Meutsch Adolf Rock-drill
US2740611A (en) * 1952-01-08 1956-04-03 Firth Sterling Inc Tool bit for mining operations
US2930588A (en) * 1956-11-06 1960-03-29 Mclaughlin Mfg Co Inc Mining drill
US3131779A (en) * 1962-02-01 1964-05-05 Jersey Prod Res Co Erosion resistant nozzle assembly and method for forming
US3163246A (en) * 1963-04-18 1964-12-29 Westinghouse Air Brake Co Rock drill bit
SU395559A1 (ru) * 1971-12-27 1973-08-28 Научнотисследовательский , проектно конструкторский институт добыче полезных ископаемых открытым способом Всесоюзная
SU516813A2 (ru) * 1974-12-27 1976-06-05 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.Серго Орджоникидзе Резец дл вращательного бурени шпуров
SU646045A1 (ru) * 1976-06-08 1979-02-05 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.Серго Орджоникидзе Резец дл вращательного бурени
SU621870A1 (ru) * 1976-06-08 1978-08-30 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.С.Орджоникидзе Резец дл вращательного бурени
SU625036A1 (ru) * 1976-07-01 1978-08-09 Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср Резец дл горных машин
US4098362A (en) * 1976-11-30 1978-07-04 General Electric Company Rotary drill bit and method for making same
US4190125A (en) * 1977-11-09 1980-02-26 Fansteel Inc. Drill bit and steel combination for improved fluid flow
US4211294A (en) * 1978-04-21 1980-07-08 Acker Drill Company, Inc. Impregnated diamond drill bit
US4333540A (en) * 1978-10-02 1982-06-08 General Electric Company Cutter element and cutter for rock drilling
US4241798A (en) * 1979-01-29 1980-12-30 Reed Tool Company Drilling bits for plastic formations
US4373593A (en) * 1979-03-16 1983-02-15 Christensen, Inc. Drill bit
US4303136A (en) * 1979-05-04 1981-12-01 Smith International, Inc. Fluid passage formed by diamond insert studs for drag bits
US4359335A (en) * 1980-06-05 1982-11-16 Smith International, Inc. Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite
CA1193870A (en) * 1980-08-14 1985-09-24 Peter N. Tomlinson Abrasive product
US4352400A (en) * 1980-12-01 1982-10-05 Christensen, Inc. Drill bit
DE3111156C1 (de) * 1981-03-21 1983-04-14 Christensen, Inc., 84115 Salt Lake City, Utah Schneidglied fuer Drehbohrmeissel zum Tiefbohren in Erdformationen
US4682987A (en) * 1981-04-16 1987-07-28 Brady William J Method and composition for producing hard surface carbide insert tools
EP0084418A3 (en) * 1982-01-20 1983-08-10 Unicorn Industries Limited Improved drill bit and method
NO830532L (no) * 1982-02-20 1983-08-22 Nl Industries Inc Borkrone.
US4440247A (en) * 1982-04-29 1984-04-03 Sartor Raymond W Rotary earth drilling bit
US4678237A (en) * 1982-08-06 1987-07-07 Huddy Diamond Crown Setting Company (Proprietary) Limited Cutter inserts for picks
US4478297A (en) * 1982-09-30 1984-10-23 Strata Bit Corporation Drill bit having cutting elements with heat removal cores
US4570726A (en) * 1982-10-06 1986-02-18 Megadiamond Industries, Inc. Curved contact portion on engaging elements for rotary type drag bits
US4529048A (en) * 1982-10-06 1985-07-16 Megadiamond Industries, Inc. Inserts having two components anchored together at a non-perpendicular angle of attachment for use in rotary type drag bits
US4527931A (en) * 1983-05-27 1985-07-09 Gte Laboratories Incorporated Indexable insert for mining drill
US4627503A (en) * 1983-08-12 1986-12-09 Megadiamond Industries, Inc. Multiple layer polycrystalline diamond compact
ZA846759B (pl) * 1983-09-05 1985-02-27
US4776241A (en) * 1984-02-13 1988-10-11 Bernard Pollington Cutting tool
US4525178A (en) * 1984-04-16 1985-06-25 Megadiamond Industries, Inc. Composite polycrystalline diamond
US4602691A (en) * 1984-06-07 1986-07-29 Hughes Tool Company Diamond drill bit with varied cutting elements
GB8432587D0 (en) * 1984-12-22 1985-02-06 Nl Petroleum Prod Cutting elements for rotary drill bits
GB8500925D0 (en) * 1985-01-15 1985-02-20 Nl Petroleum Prod Cutter assemblies
US4694918A (en) * 1985-04-29 1987-09-22 Smith International, Inc. Rock bit with diamond tip inserts
AU577958B2 (en) * 1985-08-22 1988-10-06 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive compact
US4907662A (en) * 1986-02-18 1990-03-13 Reed Tool Company Rotary drill bit having improved mounting means for multiple cutting elements
US4702649A (en) * 1986-02-27 1987-10-27 General Electric Company Polycrystalline diamond and CBN cutting tools
ZA871298B (pl) * 1986-02-28 1987-08-17
US4751972A (en) * 1986-03-13 1988-06-21 Smith International, Inc. Revolving cutters for rock bits
FR2602541B3 (fr) * 1986-08-11 1989-05-26 De Beers Ind Diamond Element de coupe pour haveuse
US4913244A (en) * 1986-09-11 1990-04-03 Eastman Christensen Company Large compact cutter rotary drill bit utilizing directed hydraulics for each cutter
US4819748A (en) * 1987-02-20 1989-04-11 Truscott Aaron S Roof drill bit
DE3706641A1 (de) * 1987-03-02 1988-09-15 Hilti Ag Hohlbohrer
WO1989001086A1 (en) * 1987-07-23 1989-02-09 Kennametal Inc. Masonry two-prong rotary drill bit
GB2211872B (en) * 1987-11-03 1991-06-19 Reed Tool Co Improvements in or relating to cutter assemblies for rotary drill bits
US5099935A (en) * 1988-01-28 1992-03-31 Norton Company Reinforced rotary drill bit
US4811801A (en) * 1988-03-16 1989-03-14 Smith International, Inc. Rock bits and inserts therefor
DE68910561D1 (de) * 1988-04-05 1993-12-16 Camco Drilling Group Ltd Schneidelement für Drehbohrmeissel und dessen Herstellung.
US4858707A (en) * 1988-07-19 1989-08-22 Smith International, Inc. Convex shaped diamond cutting elements
EP0356097B1 (en) * 1988-08-15 1994-11-23 De Beers Industrial Diamond Division (Proprietary) Limited Tool insert
US4932484A (en) * 1989-04-10 1990-06-12 Amoco Corporation Whirl resistant bit
US4911254A (en) * 1989-05-03 1990-03-27 Hughes Tool Company Polycrystalline diamond cutting element with mating recess
AU624521B2 (en) * 1989-07-07 1992-06-11 De Beers Industrial Diamond Division (Proprietary) Limited Manufacture of an abrasive body
US4989578A (en) * 1989-08-30 1991-02-05 Lebourg Maurice P Method for forming diamond cutting elements for a diamond drill bit
GB9103828D0 (en) * 1991-02-23 1991-04-10 Brit Bit Limited Improvements relating to drill bits
US5184689A (en) * 1991-03-06 1993-02-09 Kennametal Inc. Radial cut drill bit insert
US5180022A (en) * 1991-05-23 1993-01-19 Brady William J Rotary mining tools

Also Published As

Publication number Publication date
AU4147793A (en) 1994-03-03
PL171784B1 (pl) 1997-06-30
AU648953B2 (en) 1994-05-05
US5429199A (en) 1995-07-04

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