EP0351699A2 - Trépan carottier - Google Patents

Trépan carottier Download PDF

Info

Publication number
EP0351699A2
EP0351699A2 EP89112719A EP89112719A EP0351699A2 EP 0351699 A2 EP0351699 A2 EP 0351699A2 EP 89112719 A EP89112719 A EP 89112719A EP 89112719 A EP89112719 A EP 89112719A EP 0351699 A2 EP0351699 A2 EP 0351699A2
Authority
EP
European Patent Office
Prior art keywords
cutting segments
carrier body
drilling tool
hollow drilling
cutting
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.)
Withdrawn
Application number
EP89112719A
Other languages
German (de)
English (en)
Other versions
EP0351699A3 (fr
Inventor
Eugen Dr. Magyari
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
Publication of EP0351699A2 publication Critical patent/EP0351699A2/fr
Publication of EP0351699A3 publication Critical patent/EP0351699A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
    • Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
    • Y10T408/455—Conducting channel extending to end of Tool
    • 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

Definitions

  • the invention relates to a hollow drilling tool with a tubular support body and at its front end arranged in the feed direction, hard material-containing cutting segments.
  • Hollow drilling tools known from DE-GM 85 15 322 are used in particular for producing larger diameter bores in concrete, masonry, stone and the like.
  • the cutting segments contain abrasive cutting bodies, in particular synthetically produced diamonds, embedded as hard material in a metal matrix.
  • the radial radial extent of the cutting segments is usually greater than the wall thickness of the tubular support body, so that cutting is carried out and the wall of the support body does not come into contact with the surface to be processed.
  • the object of the invention is to create a hollow drilling tool which, in addition to good free-cutting properties, is also simple and economical to produce.
  • this is achieved in that the cutting segments are arranged offset on the carrier body in such a way that a part of the cutting segments essentially projects beyond the inner contour of the carrier body and a part of the cutting segments essentially projects beyond the outer contour of the carrier body.
  • the cutting segments are thus offset relative to one another in the radial direction. Since only a part of the cutting segments essentially the inner contour and only a part If the cutting segments essentially protrude beyond the outer contour of the carrier body, the cutting segments can be made thinner in the radial direction than the known segments which substantially project beyond the carrier body on both sides. In this way, savings in hard materials of up to about 30% are possible, and in addition to the hard materials, the corresponding amount of matrix material can also be saved. Since only some of the cutting segments slide along the outer or inner wall of the hollow bore to be created, the friction with respect to the entire hollow drilling tool is also reduced.
  • the radial offset and the thinner design of the cutting segments result in large flow cross sections for the cooling and rinsing water or for the "drilling mud" between the cutting segments offset inwards and the borehole wall or between the cutting segments offset outwards and the drill core.
  • the inner contour and essentially the outer contour of the supporting body are alternately arranged cutting segments along the circumference of the supporting body.
  • cutting segments alternately process the outside and inside of the bore to be created, which leads to a good distribution of the cutting forces.
  • the staggered arrangement of the cutting segments can be compared to the setting of a saw blade, which prevents jamming in the surface to be processed and also ensures sufficient removal of the surface to be processed.
  • All of the cutting segments substantially projecting beyond the outer contour of the carrier body are advantageously arranged on the same radius.
  • the cutting segments projecting beyond the outer contour of the carrier body thus slide all along the outer wall of the bore to be created and lead to good centering of the hollow drilling tool, along with high surface quality and precise geometry of the bore.
  • All of the cutting segments that essentially project beyond the inner contour of the carrier body are expediently arranged on the same radius, which in particular promotes the good guidance and the concentricity of the hollow drilling tool.
  • the cutting segments advantageously protrude the inner and outer contours of the carrier body by essentially the same amount.
  • the same bodies can be used for the cutting segments projecting beyond the inner contour and the outer contour of the carrier body. Since the cutting segments project substantially beyond the inner and outer contours of the carrier body, the cutting forces occurring on the individual cutting segments are also approximately the same.
  • the cutting segments are expediently at least partially embedded in substantially U-shaped recesses in the carrier body that are open toward the front end.
  • the insertion of the cutting segments into recesses in the carrier body provides good support for the cutting segments in the carrier body.
  • the cutting segments can be connected to the carrier body by soldering or welding.
  • the hollow drilling tool shown in FIGS. 1 and 2 consists of a tubular support body 1 with a front end 1a and a rear end 1b in the feed direction. At the rear end 1b is a connection piece 2 with the Carrier body 1 connected. The connecting piece 2 is used to connect the hollow drilling tool with a drive device, not shown.
  • the carrier body 1 is provided at its front end 1a with U-shaped recesses 1c for receiving cutting segments 3, 4. As shown in FIG. 2 in particular, the cutting segments 3, 4 are arranged offset in the radial direction with respect to the carrier body 1.
  • the cutting segments 3 are arranged opposite the carrier body in such a way that they protrude beyond the outer contour of the carrier body 1.
  • the cutting segments 4 are arranged offset with respect to the carrier body 1 in such a way that they project beyond the inner contour of the carrier body 1. 1 shows, in particular, the cutting segments 3, 4 protrude the inner and outer contours of the carrier body 1 by essentially the same amount A. In particular in the case of larger hollow drilling tools, the same bodies can also be used for the cutting segments 3, 4, since the difference between the two Inner radius and the outer radius is relatively small.
  • the cutting segments 3, 4 are soldered into the recesses 1c of the carrier body 1 and are thus connected to the carrier body 1 on three sides.
  • the radial displacement of the cutting segments 3, 4 creates annular gaps 5 of large flow cross section between the outwardly displaced cutting segments 3 and the borehole core for the cooling water supplied through a bore 1d and between the inwardly displaced cutting segments 4 and the borehole wall of annular gaps 6 of large flow cross section for the resulting drilling mud.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
EP89112719A 1988-07-20 1989-07-12 Trépan carottier Withdrawn EP0351699A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3824502 1988-07-20
DE3824502A DE3824502A1 (de) 1988-07-20 1988-07-20 Hohlbohrwerkzeug

Publications (2)

Publication Number Publication Date
EP0351699A2 true EP0351699A2 (fr) 1990-01-24
EP0351699A3 EP0351699A3 (fr) 1990-06-20

Family

ID=6359052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112719A Withdrawn EP0351699A3 (fr) 1988-07-20 1989-07-12 Trépan carottier

Country Status (4)

Country Link
US (1) US4966502A (fr)
EP (1) EP0351699A3 (fr)
JP (1) JPH02160505A (fr)
DE (1) DE3824502A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456994A1 (fr) * 1990-05-15 1991-11-21 Willi Wader Gmbh Tige de perçage pour trou de coulée d'un haut fourneau
US5178222A (en) * 1991-07-11 1993-01-12 Baker Hughes Incorporated Drill bit having enhanced stability
EP0583629A1 (fr) * 1992-08-10 1994-02-23 Bauer Spezialtiefbau GmbH Couronne de forage avec des éléments dentés répartis sur la périphérie et disposés de façon amovible
RU2263758C2 (ru) * 2003-08-11 2005-11-10 Институт горного дела Севера СО РАН Термомеханический способ бурения и устройство для его осуществления
RU2374417C1 (ru) * 2008-03-13 2009-11-27 Институт горного дела Севера им. Н.В. Черского СО РАН Инструмент для термофрикционного бурения горных пород
RU2416709C1 (ru) * 2009-08-20 2011-04-20 Институт горного дела Севера им. Н.В. Черского СО РАН Коронка терморезцовая
RU2416710C1 (ru) * 2009-08-20 2011-04-20 Институт горного дела Севера им. Н.В. Черского СО РАН Буровая термофрикционная коронка

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3309518B2 (ja) * 1993-10-01 2002-07-29 松下電器産業株式会社 ブラシレスモータのロック警報装置
US5813802A (en) * 1995-11-30 1998-09-29 House B.M. Co., Ltd. Drilling tool assembly and its center drill and cup shape drill
DE19702423B4 (de) * 1997-01-24 2009-11-12 FAMAG-Werkzeugfabrik Friedr. Aug. Mühlhoff GmbH & Co. Zylinderkopfbohrer
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
US6599065B2 (en) * 2001-08-10 2003-07-29 Mibro Partners Tapered plug cutter
DE10162636A1 (de) * 2001-12-20 2003-07-03 Hilti Ag Ultraschallkernbohrkrone
US20050105981A1 (en) * 2003-09-26 2005-05-19 The M. K. Morse Company Hole cutter and method for producing
WO2006076795A1 (fr) * 2005-01-18 2006-07-27 Groupe Fordia Inc Meche pour percer un trou
JP4660836B2 (ja) * 2005-02-04 2011-03-30 株式会社ミスミ特殊 コアドリル
US8485283B2 (en) * 2007-09-05 2013-07-16 Groupe Fordia Inc. Drill bit
CN204603374U (zh) 2013-12-19 2015-09-02 米沃奇电动工具公司 孔加工总成和可调节的孔加工系统
BE1023352B1 (fr) * 2016-01-29 2017-02-13 Diarotech S.A. Couronne miniere comprenant des segments impregnes de diamant obtenus par frittage a chaud
JP6675999B2 (ja) * 2017-02-17 2020-04-08 育良精機株式会社 穴径拡大用の環状ドリル
CN114728349B (zh) 2019-11-14 2025-07-08 米沃奇电动工具公司 具有大的硬质合金悬突的孔锯
EP4033068A1 (fr) * 2021-01-25 2022-07-27 Welltec A/S Train d'outil par câble de fond de trou

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE75306C (de) * F. fromholt in Paris 88 rue Ordener Befestigung von Arbeitsspitzen (Diamanten) in Bohrkronen
DE55982C (de) * O. TERP in Breslau, Villa Marschall Kleinburg Bohrkrone für Schmirgeltiefbohrverfahren zur Gewinnung von Gesteinskernen
US53722A (en) * 1866-04-03 Improvement in hollow augers
FR332541A (fr) * 1903-05-23 1903-10-30 Adam Tindel Perfectionnements à la construction des outils coupants rotatifs pour le travail des métaux
US2188631A (en) * 1937-12-03 1940-01-30 Ingersoll Milling Machine Co Trepanning drill
US3244035A (en) * 1965-09-21 1966-04-05 Ex Cell O Corp Trepanning drill tool
DE1602913A1 (de) * 1967-10-20 1970-08-20 Brueder Mannesmann Gmbh Anbohrgeraet,insbesondere fuer Gas- und Wasserleitungen
US3817648A (en) * 1971-09-03 1974-06-18 Super Cut Drill shank and chuck assembly for a drill press
JPS58811B2 (ja) * 1978-02-20 1983-01-08 日本電気ホームエレクトロニクス株式会社 温度ヒュ−ズ
US4274769A (en) * 1978-04-21 1981-06-23 Acker Drill Company, Inc. Impregnated diamond drill bit construction
JPS5472595A (en) * 1978-07-31 1979-06-11 Hitachi Ltd Core drill
JPS5981011A (ja) * 1982-10-27 1984-05-10 Miyanaga:Kk 砥石刃付き回転式コアドリル
CA1192899A (fr) * 1982-11-22 1985-09-03 Reino E. Jarvi Tariere a glace

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456994A1 (fr) * 1990-05-15 1991-11-21 Willi Wader Gmbh Tige de perçage pour trou de coulée d'un haut fourneau
US5178222A (en) * 1991-07-11 1993-01-12 Baker Hughes Incorporated Drill bit having enhanced stability
EP0583629A1 (fr) * 1992-08-10 1994-02-23 Bauer Spezialtiefbau GmbH Couronne de forage avec des éléments dentés répartis sur la périphérie et disposés de façon amovible
RU2263758C2 (ru) * 2003-08-11 2005-11-10 Институт горного дела Севера СО РАН Термомеханический способ бурения и устройство для его осуществления
RU2374417C1 (ru) * 2008-03-13 2009-11-27 Институт горного дела Севера им. Н.В. Черского СО РАН Инструмент для термофрикционного бурения горных пород
RU2416709C1 (ru) * 2009-08-20 2011-04-20 Институт горного дела Севера им. Н.В. Черского СО РАН Коронка терморезцовая
RU2416710C1 (ru) * 2009-08-20 2011-04-20 Институт горного дела Севера им. Н.В. Черского СО РАН Буровая термофрикционная коронка

Also Published As

Publication number Publication date
JPH02160505A (ja) 1990-06-20
DE3824502A1 (de) 1990-01-25
US4966502A (en) 1990-10-30
EP0351699A3 (fr) 1990-06-20

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