EP0378964A2 - Outil à trépaner - Google Patents

Outil à trépaner Download PDF

Info

Publication number
EP0378964A2
EP0378964A2 EP89810661A EP89810661A EP0378964A2 EP 0378964 A2 EP0378964 A2 EP 0378964A2 EP 89810661 A EP89810661 A EP 89810661A EP 89810661 A EP89810661 A EP 89810661A EP 0378964 A2 EP0378964 A2 EP 0378964A2
Authority
EP
European Patent Office
Prior art keywords
segments
drilling tool
carrier part
hollow drilling
cutting bodies
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP89810661A
Other languages
German (de)
English (en)
Other versions
EP0378964A3 (en
EP0378964B1 (fr
Inventor
Josef Obermeier
Ernst Wohlwend
Eugen Dr. Magyari
Horst-Detlef Gassmann
Walter Ritt
Peter Cavada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to AT89810661T priority Critical patent/ATE91933T1/de
Publication of EP0378964A2 publication Critical patent/EP0378964A2/fr
Publication of EP0378964A3 publication Critical patent/EP0378964A3/de
Application granted granted Critical
Publication of EP0378964B1 publication Critical patent/EP0378964B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • 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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/78—Tool of specific diverse material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/81—Tool having crystalline cutting edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/896—Having product-receiving chamber

Definitions

  • the invention relates to a hollow drilling tool with a tubular carrier part and cutting bodies arranged at the front end thereof.
  • Hollow boring tools are mainly used for drilling larger diameter bores.
  • a hollow drilling tool is known for example from GB-PS 935 030.
  • the ring-shaped cutting body is connected to the carrier part.
  • the radial guidance of this hollow drilling tool takes place exclusively via the cutting body.
  • the guide length becomes shorter. If the guide length is too small, an exact borehole geometry can no longer be guaranteed.
  • the invention has for its object to provide a hollow drilling tool that allows full use of the cutting body and compliance with an accurate hole geometry.
  • this is achieved by the fact that guide elements are arranged towards the carrier part opposite to the feed direction, the outer contour of which corresponds to the cutting body along at least part of the circumference of the outer contour, the guide elements have a higher wear resistance than the carrier part and the axial extent of the Guide elements corresponds at least to the axial extent of the cutting body.
  • the two functions "cutting” and “guiding” are separated from one another by the arrangement of guide elements. Since the outer contour of the guide elements at least along one Part of the circumference corresponds to the outer contour of the cutting bodies, the guide elements are guided in the bore previously made by the cutting bodies. Since the guide elements have a higher wear resistance than the carrier part, premature wear of the guide elements is prevented. Because the axial extent of the guide elements corresponds at least to the axial extent of the cutting bodies, adequate guidance of the hollow drilling tool in the borehole is ensured over the entire service life of the cutting bodies.
  • the guide elements are expediently designed as segments. Segments each extend over part of the circumference. If the circumferential extent of the segments is sufficiently small and the outside diameter of the hollow drilling tool is sufficiently large, the segments can also be designed as flat strips that extend in the axial direction.
  • At least three segments distributed along the circumference are preferably provided.
  • the central position of the hollow drilling tool in a hole is determined using three segments. However, more than three, for example four or six, segments can also be provided for a favorable distribution of the lateral forces.
  • the segments are expediently arranged adjacent to the cutting bodies in an extension against the feed direction.
  • the cutting bodies are thus supported in the axial direction on the segments and these in turn on the carrier part.
  • the segments and the cutting bodies can each be produced individually and then connected to one another, for example by soldering. Because the cutting body preferred consists of synthetic diamonds embedded in a metal matrix, the cutting bodies and the segments can also be pre-sintered individually and then sintered together to form a single body.
  • the segments are advantageously arranged in corresponding recesses in the carrier body.
  • the segments are thus surrounded on three sides by the carrier part. Such a positive connection of the segments to the carrier part prevents the segments from breaking out even under extreme conditions.
  • the segments are expediently part of a carrier arranged between the carrier part and the cutting bodies.
  • the carrier can thus be manufactured separately and then connected to the carrier part at one end and to the cutting bodies at the other end. This enables rational and economical production.
  • the carrier can, for example, be provided with grooves running in the axial direction, so that strips serving to guide the hollow drilling tool are produced between the individual grooves. Such grooves are also used for the good removal of the cooling water and the cuttings washed away with it.
  • the carrier can also be pre-sintered and then connected to the cutting bodies.
  • the guide elements advantageously contain wear-resistant hard materials.
  • Such hard materials are, for example, silicon carbide or the like. These hard materials can be sintered into a matrix material.
  • the carrier part 1 consists of a tubular carrier part 1, a ring-shaped cutting body 2 and a likewise ring-shaped carrier 3.
  • the carrier part 1 has a front end 1a and a rear end 1b. At the rear end 1b, the carrier part 1 is provided with a connecting piece 1c.
  • the cutting body 2 also has a front end 2a and a rear end 2b.
  • the cutting body 2 is also provided with two diametrically opposed slots 2c extending from the front end 2a. These slots 2c serve for the passage of the cooling water supplied through the carrier part 1 from the inside to the outside of the hollow drilling tool.
  • the carrier 3 has a front end 3a and a rear end 3b. The front end 3a of the carrier 3 is connected to the rear end 2b of the cutting body 2.
  • the carrier 3 is provided along its circumference with grooves 3c running in the axial direction. These grooves 3c serve to discharge the cooling water and the cuttings washed away with it. The webs remaining between the grooves 3c are used for guidance and are designed as segments 3d forms.
  • the rear end 3b of the carrier 3 is connected to the front end 1a of the carrier part 1. This connection of the carrier part 1 to the carrier 3 can take place, for example, by welding or soldering.
  • the connection between the cutting body 2 and the carrier 3 can also be made by welding or soldering. In addition, it is possible to sinter the cutting body 2 and the carrier 3 together.
  • the axial extent 1 of the carrier 3 is a multiple of the axial extent s of the cutting body 2.
  • the hollow drilling tool shown in FIG. 3 consists of a carrier part 11 and on its front end 11a arranged cutting bodies 12 and the guiding segments 13.
  • the segments 13 are located between the carrier part 11 and the cutting bodies 12 and correspond in cross section to the cutting bodies 12.
  • Die Cutting body 12 and the segments 13 can be connected to one another by sintering, soldering or welding.
  • the segments 13 are connected to the carrier part 11 by welding or soldering.
  • the carrier part 11 and the segments 13 are connected to one another only at the end. Due to the gaps between the segments 13, the cooling water can circulate from the inside to the outside of the tubular support part 11.
  • the axial extent t of the segments 13 corresponds approximately to the axial extent s of the cutting bodies 12. This ensures that the guidance is sufficient until the cutting bodies 12 are completely worn out.
  • the hollow drilling tool shown in FIG. 4 consists of a carrier part 21 and cutting bodies 22 and segments 23 arranged at its front end 21a.
  • the cutting bodies 22 and the segments 23 are arranged in recesses 21b of the carrier part 21.
  • the axial extent m of the segments 23 is approximately twice the axial extent s of the cutting bodies 22. This ensures good guidance of the hollow drill tool ensured even with almost completely worn cutting bodies 22.
  • the segments 23 are completely embedded in the carrier part 21.
  • the cutting bodies 22 are connected to the segments 23.
  • the carrier part 21 has openings 21c between the individual cutting bodies 22. These openings 21c serve for the passage of the cooling water from the inside to the outside of the carrier part 21.
  • the hollow drilling tool shown in FIG. 5 consists of a carrier part 31 and cutting bodies 32 arranged at its front end 31a and segments 33 serving as guides.
  • the segments 33 and the cutting bodies 32 are completely embedded in recesses 31b of the carrier part 31.
  • the axial extent n of the segments 33 is approximately three times the axial extent s of the cutting bodies 32. This results in a particularly long guide length and thus enables very precise bores to be produced.
  • the carrier part 31 is provided with slots 31c between the cutting bodies 32. These slots serve for the passage of the cooling water.
  • the cutting bodies 32 and the segments 33 can in turn be connected to one another by welding, soldering or sintering.
  • the segments 33 are connected to the carrier part 31 by soldering or welding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Surgical Instruments (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Dowels (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP89810661A 1989-01-20 1989-09-05 Outil à trépaner Expired - Lifetime EP0378964B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810661T ATE91933T1 (de) 1989-01-20 1989-09-05 Hohlbohrwerkzeug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901528A DE3901528A1 (de) 1989-01-20 1989-01-20 Hohlbohrwerkzeug
DE3901528 1989-01-20

Publications (3)

Publication Number Publication Date
EP0378964A2 true EP0378964A2 (fr) 1990-07-25
EP0378964A3 EP0378964A3 (en) 1990-09-26
EP0378964B1 EP0378964B1 (fr) 1993-07-28

Family

ID=6372415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810661A Expired - Lifetime EP0378964B1 (fr) 1989-01-20 1989-09-05 Outil à trépaner

Country Status (6)

Country Link
US (1) US5069584A (fr)
EP (1) EP0378964B1 (fr)
JP (1) JPH02224978A (fr)
AT (1) ATE91933T1 (fr)
CA (1) CA2008169C (fr)
DE (2) DE3901528A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015683A1 (fr) * 1989-06-14 1990-12-27 Tyrolit Schleifmittelwerke Swarovski K.G. Fleuret creux
WO2013093041A1 (fr) * 2011-12-22 2013-06-27 Hilti Aktiengesellschaft Couronne de forage avec section de coupe interchangeable
DE102014007958A1 (de) * 2014-06-04 2015-12-17 Vittorio Pittana Vorrichtung und Verfahren zur Senkung der notwenigen Antriebsleistung bei Kernbohrarbeiten
EP3501713A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Section de coupe pour une couronne de forage

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316416A (en) * 1992-09-29 1994-05-31 Ehwa Diamond Ind. Co., Ltd. Diamond cutting tool for hard articles
US5887668A (en) * 1993-09-10 1999-03-30 Weatherford/Lamb, Inc. Wellbore milling-- drilling
US5887655A (en) * 1993-09-10 1999-03-30 Weatherford/Lamb, Inc Wellbore milling and drilling
US5996571A (en) * 1996-02-01 1999-12-07 Diamond Products Joint Venture Diamond core drill bit
US5741097A (en) * 1996-06-20 1998-04-21 Murphy, Ii; John W. Heat exchanger fin remover
US5803194A (en) * 1996-11-19 1998-09-08 Kennametal Inc. Wear protector for a drilling tool
US5823276A (en) * 1996-12-24 1998-10-20 Beck, Iii; August H. Diamond-tipped core barrel and method of using same
JP3290103B2 (ja) * 1997-06-11 2002-06-10 株式会社アライドマテリアル コアビット
US5865571A (en) * 1997-06-17 1999-02-02 Norton Company Non-metallic body cutting tools
US6203416B1 (en) * 1998-09-10 2001-03-20 Atock Co., Ltd. Outer-diameter blade, inner-diameter blade, core drill and processing machines using same ones
DE19926247B4 (de) * 1999-06-09 2005-08-04 Krauss-Maffei Wegmann Gmbh & Co. Kg Diamantkronenbohrer
US6196908B1 (en) * 1999-07-16 2001-03-06 Storage Technology Corporation Drill for composite materials
US20020137433A1 (en) * 2001-03-26 2002-09-26 Lee Lawrence K. Abrasive drill bit
AT5265U1 (de) * 2001-07-27 2002-05-27 Schraml Glastechnik Gmbh Diamant-hohlbohrer
EP1304199A1 (fr) * 2001-10-18 2003-04-23 Marcrist International Limited Trépan avec protection contre l'usure
US8191545B2 (en) * 2002-02-22 2012-06-05 Kim & Ed Pte Ltd Electroformed thin-wall core drills impregnated with abrasives
US6935325B1 (en) * 2002-11-01 2005-08-30 Lawrence L. Getty Method and apparatus for cutting and polishing stone articles
US7028790B2 (en) * 2003-09-19 2006-04-18 Jack Moore Associates, Inc. Rotary drill bit
CA2563048A1 (fr) * 2004-03-31 2005-10-13 Japan Science And Technology Agency Methode d'installation de boulon d'ancrage, methode de forage de boulon d'ancrage et dispositif de forage
US7927189B2 (en) * 2004-08-16 2011-04-19 United Technologies Corporation Superabrasive tool
RU2388895C2 (ru) * 2005-01-18 2010-05-10 Груп Фордиа Инк. Головка для бурения отверстия
GB2427843B (en) * 2005-10-24 2008-05-07 C4 Carbides Ltd Drill bit
US7204244B1 (en) 2006-03-02 2007-04-17 Luminare Supply Corporation Diamond core drill bit
US8221423B2 (en) * 2006-03-28 2012-07-17 Warsaw Orthopedic, Inc. Osteochondral plug graft harvesting instrument and kit
US20080100125A1 (en) * 2006-11-01 2008-05-01 Les Staples Abrasive cutter
US9267332B2 (en) 2006-11-30 2016-02-23 Longyear Tm, Inc. Impregnated drilling tools including elongated structures
US9540883B2 (en) 2006-11-30 2017-01-10 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools and methods of forming and using same
ES2635721T3 (es) * 2006-11-30 2017-10-04 Longyear Tm, Inc. Herramientas de corte impregnadas de diamante que contienen fibras
US9500036B2 (en) 2006-12-14 2016-11-22 Longyear Tm, Inc. Single-waterway drill bits and systems for using same
AU2011201711B1 (en) * 2006-12-14 2011-07-28 Boart Longyear Company Core drill bit with extended matrix height
US9279292B2 (en) 2013-11-20 2016-03-08 Longyear Tm, Inc. Drill bits having flushing and systems for using same
US9506298B2 (en) 2013-11-20 2016-11-29 Longyear Tm, Inc. Drill bits having blind-hole flushing and systems for using same
US8459381B2 (en) 2006-12-14 2013-06-11 Longyear Tm, Inc. Drill bits with axially-tapered waterways
US7628228B2 (en) * 2006-12-14 2009-12-08 Longyear Tm, Inc. Core drill bit with extended crown height
US20080181735A1 (en) * 2007-01-25 2008-07-31 Ting Fong Electric & Machinery Co., Ltd. Method for manufacturing drill cutters and structure thereof
DE102007005463B3 (de) * 2007-01-30 2008-05-29 Ting Fong Electric & Machinery Co. Ltd., Sanchung Verfahren zur Herstellung von Bohrfräsern sowie Bohrfräser
CN101234468B (zh) * 2007-01-30 2010-05-19 鼎峰电机工业股份有限公司 钻孔刀具的制造方法及其结构
CL2008002641A1 (es) * 2007-09-05 2009-11-20 Groupe Fordia Inc Barrena perforadora que se usa con un fluido, comprende una seccion del cuerpo que posee un conducto para recibir el fluido, una seccion de una corona anular que esta en comunicacion fluida con el conducto del cuerpo, un componente de direccion de flujo que coopera con la seccion de la corona, donde esta ultima alcanza un umbral predeterminado de desgaste.
US8590646B2 (en) * 2009-09-22 2013-11-26 Longyear Tm, Inc. Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
US8657894B2 (en) 2011-04-15 2014-02-25 Longyear Tm, Inc. Use of resonant mixing to produce impregnated bits
US20130022421A1 (en) * 2011-07-21 2013-01-24 Robert Bosch Gmbh Abrasive coring bit
WO2014015154A1 (fr) 2012-07-18 2014-01-23 Milwaukee Electric Tool Corporation Scie cylindrique
CA2825729C (fr) 2012-11-21 2018-05-22 Diamond Products, Limited Meche en diamant et ses procedes de fabrication
EP2745965A1 (fr) * 2012-12-21 2014-06-25 HILTI Aktiengesellschaft Trépan doté d'une section de coupe interchangeable
EP2745966A1 (fr) 2012-12-21 2014-06-25 HILTI Aktiengesellschaft Trépan doté d'une section de coupe interchangeable
CA2854691C (fr) 2013-07-03 2017-10-31 Karl H. Moller Procede de fabrication d'une couronne de forage pourvue d'un aleseur pour l'extraction de diamants
EP3037229A1 (fr) * 2014-12-22 2016-06-29 HILTI Aktiengesellschaft Bague de forage pour une couronne de carottage
PE20171462A1 (es) 2015-01-12 2017-10-11 Longyear Tm Inc Herramientas de perforacion que tienen matrices con aleaciones que forman carburo y metodos para fabricarlas y utilizarlas
US11926005B2 (en) * 2017-08-03 2024-03-12 Vestas Wind Systems A/S Mill bit for the manufacture of a wind turbine blade and method of forming same
WO2020014340A1 (fr) 2018-07-10 2020-01-16 Milwaukee Electric Tool Corporation Scie-cloche dotée de trous à parois latérales hexagonales
US20200040663A1 (en) * 2018-08-02 2020-02-06 Qual Diamond Hi-Tech Corporation Electroformed thin-wall diamond drill bit with continuous wavy-shape blade
WO2020257303A1 (fr) 2019-06-20 2020-12-24 Milwaukee Electric Tool Corporation Scie-cloche dotée de trous à parois latérales circulaires
CN110424901B (zh) * 2019-08-17 2021-05-18 温州瓯厦建设有限公司 一种开孔器
US20210101248A1 (en) * 2019-10-07 2021-04-08 Paul Luccia Method and apparatus for forming holes
USD958855S1 (en) 2019-12-09 2022-07-26 Milwaukee Electric Tool Corporation Hole saw
USD959521S1 (en) * 2020-11-16 2022-08-02 Adam Abrams Tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE694502C (de) * 1938-10-05 1940-08-02 Walter Hebart Aus einem Bohrrohr und aufgesetztem Bohrkopf bestehendes Bohrwerkzeug, insbesondere zur Herstellung langer Bohrungen
GB935030A (en) * 1959-01-26 1963-08-28 Super Cut Abrasive diamond core drill
US3833077A (en) * 1971-02-12 1974-09-03 L Lavallee Diamond drills
DE2304271B2 (de) * 1972-02-02 1976-03-18 Christensen Diamond Products Co., Salt Lake City, Utah (V.St.A.) Tiefbohrwerkzeug
DE2850015A1 (de) * 1977-11-18 1979-05-23 Lamage Ltd Diamantenbestueckter bohreinsatz

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120286A (en) * 1962-01-04 1964-02-04 Jersey Prod Res Co Stabilized drag bit
SE337974B (fr) * 1970-09-29 1971-08-23 Sandvikens Jernverks Ab
SU437621A1 (ru) * 1972-06-21 1974-07-30 Предприятие П/Я В-2438 Алмазное кольцевое сверло
SU745701A1 (ru) * 1977-10-07 1980-07-07 Предприятие П/Я В-2438 Алмазное кольцевое сверло
SU791890A1 (ru) * 1978-01-30 1980-12-30 Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср Долото колонковое
US4208154A (en) * 1978-03-21 1980-06-17 Gundy William P Core drill
SU856821A1 (ru) * 1979-04-06 1981-08-25 Всесоюзный Научно-Исследовательский Институт Нерудных Строительных Материалов И Гидромеханизации (Вниинеруд) Алмазный инструмент дл кольцевого сверлени
GB2052325A (en) * 1979-07-03 1981-01-28 Stark T Multi-cutter drilling bit tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE694502C (de) * 1938-10-05 1940-08-02 Walter Hebart Aus einem Bohrrohr und aufgesetztem Bohrkopf bestehendes Bohrwerkzeug, insbesondere zur Herstellung langer Bohrungen
GB935030A (en) * 1959-01-26 1963-08-28 Super Cut Abrasive diamond core drill
US3833077A (en) * 1971-02-12 1974-09-03 L Lavallee Diamond drills
DE2304271B2 (de) * 1972-02-02 1976-03-18 Christensen Diamond Products Co., Salt Lake City, Utah (V.St.A.) Tiefbohrwerkzeug
DE2850015A1 (de) * 1977-11-18 1979-05-23 Lamage Ltd Diamantenbestueckter bohreinsatz

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015683A1 (fr) * 1989-06-14 1990-12-27 Tyrolit Schleifmittelwerke Swarovski K.G. Fleuret creux
WO2013093041A1 (fr) * 2011-12-22 2013-06-27 Hilti Aktiengesellschaft Couronne de forage avec section de coupe interchangeable
DE102014007958A1 (de) * 2014-06-04 2015-12-17 Vittorio Pittana Vorrichtung und Verfahren zur Senkung der notwenigen Antriebsleistung bei Kernbohrarbeiten
EP3501713A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Section de coupe pour une couronne de forage
WO2019121471A1 (fr) * 2017-12-21 2019-06-27 Hilti Aktiengesellschaft Partie de coupe d'un trépan de forage

Also Published As

Publication number Publication date
ATE91933T1 (de) 1993-08-15
EP0378964A3 (en) 1990-09-26
CA2008169A1 (fr) 1990-07-20
EP0378964B1 (fr) 1993-07-28
DE3901528A1 (de) 1990-07-26
US5069584A (en) 1991-12-03
DE58905054D1 (de) 1993-09-02
JPH02224978A (ja) 1990-09-06
CA2008169C (fr) 2000-01-04

Similar Documents

Publication Publication Date Title
EP0378964A2 (fr) Outil à trépaner
DE3111156C1 (de) Schneidglied fuer Drehbohrmeissel zum Tiefbohren in Erdformationen
DE69807398T2 (de) Drehbohrmeissel
DE3040840C2 (de) Bohrmeißel
DE3039633C2 (de) Drehbohrmeißel, insbesondere für Tiefbohrungen
DE3143591C2 (fr)
DE2752162B2 (de) TiefbohrmeiBel
EP0603121A1 (fr) Font tubulaire
DE3824502A1 (de) Hohlbohrwerkzeug
EP0707129A2 (fr) Outil de forage avec support et éléments de coupe
EP0706870B1 (fr) Scie tubulaire
DE19942987A1 (de) Bohrwerkzeug
EP1362659B1 (fr) Outil, dispositif et procédé pour l'ébavurage de trous
DE3519101C2 (de) Fräsmeißel für eine Fräsvorrichtung
DE3705717A1 (de) Dosensenker oder hohlbohrkrone sowie herstellungsverfahren hierfuer
DE2821307C2 (fr)
EP0264599B1 (fr) Outil d'alésage
DE69820349T2 (de) Verbesserungen an Schneidelementen mit einer Oberfläche aus superhartem Werkstoff
EP1083295A1 (fr) Outil de forage
DE3336626C2 (fr)
WO2005037472A1 (fr) Outil pour realiser des alesages et/ou usiner ces derniers
EP0352546A2 (fr) Trépan carottier
DE19954315A1 (de) Bohrwerkzeug
EP0334806A1 (fr) Couronne de forage de roche
DE2943325A1 (de) Drehbohrwerkzeug fuer tiefbohrungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19901013

17Q First examination report despatched

Effective date: 19920103

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 91933

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58905054

Country of ref document: DE

Date of ref document: 19930902

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930928

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89810661.2

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20020904

Year of fee payment: 14

Ref country code: GB

Payment date: 20020904

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020910

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020911

Year of fee payment: 14

Ref country code: AT

Payment date: 20020911

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020916

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020930

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20021129

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030905

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030930

BERE Be: lapsed

Owner name: *HILTI A.G.

Effective date: 20030930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040401

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040401

GBPC Gb: european patent ceased through non-payment of renewal fee
EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040528

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050905