EP0226537B1 - Gesteinsbohrer - Google Patents

Gesteinsbohrer Download PDF

Info

Publication number
EP0226537B1
EP0226537B1 EP86810551A EP86810551A EP0226537B1 EP 0226537 B1 EP0226537 B1 EP 0226537B1 EP 86810551 A EP86810551 A EP 86810551A EP 86810551 A EP86810551 A EP 86810551A EP 0226537 B1 EP0226537 B1 EP 0226537B1
Authority
EP
European Patent Office
Prior art keywords
cutting
drill
pins
cutting pins
rock drill
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.)
Expired - Lifetime
Application number
EP86810551A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0226537A2 (de
EP0226537A3 (en
Inventor
Dieter Scholz
Friedrich Flesch
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6288555&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0226537(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0226537A2 publication Critical patent/EP0226537A2/de
Publication of EP0226537A3 publication Critical patent/EP0226537A3/de
Application granted granted Critical
Publication of EP0226537B1 publication Critical patent/EP0226537B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/58—Chisel-type inserts
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • 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

Definitions

  • the invention relates to a rock drill with a shaft and this radially projecting drill head, with an end face pointing in the feed direction.
  • Rock drills are used to drill holes in rock, concrete, masonry and the like, which are used to hold fasteners, pass through pipes and cables and to blow up. So far, two different types of rock drill bits with carbide inserts have mainly been known.
  • Rock drills known from EP-A-0 048 908, which have one or more cutting plates, are relatively simple to manufacture and are mainly used in small dimensions up to a diameter of approximately 35 mm.
  • these drills have the disadvantage that the cutting edges of the cutting plates, particularly in the outer area, wear out quickly and so that the drilling progress decreases quickly. Handling is also impaired by the corner wear.
  • the invention has for its object to provide an economically producible rock drill that allows good removal of the drill material and compliance with an accurate drill hole geometry with high mining performance.
  • the object is achieved in that the discharge grooves run in the longitudinal direction of the drill head and the end face of the drill head is provided with cutting pins made of hard metal, the free ends of the cutting pins lying in the rotational surface formed by the cutting edges of the cutting plate.
  • the cutting insert leads in particular to a good drilling behavior of the rock drill in connection with a subsequent good concentricity, which ensures that a precise drill hole geometry is maintained.
  • the additional arrangement of the cutting pins ensures that the cutting plate and cutting pins are supplied to the material to be machined at substantially the same time, and so the cutting edges of the cutting plate are less worn and the drilling progress also slows down.
  • the requirement that the free end faces of the cutting pins lie in the rotational surface formed by the cutting edges of the cutting plate serves for this purpose. This ensures that the insert and cutting pins attack the material to be machined at the same time. The wear of the insert and cutting pins is thus kept low, which has a positive effect on the drilling progress.
  • At least some of the cutting pins can be arranged parallel to the drill axis. Since the cutting pins are mainly stressed in the direction of the drill axis, such an arrangement of the cutting pins provides good support in the drill head. By arranging the cutting pins parallel to the drill axis, they can also be arranged relatively close to the cutting plate. From the point of view of comminution of the drill material, at least some of the cutting pins can be arranged inclined to the drill axis. For example, in the case of a conical end face of the drilling head, the cutting pins can be arranged approximately perpendicular to the surface of the drilling head, which enables the cutting pins to be embedded to a maximum.
  • At least some of the cutting pins are advantageously arranged on different radii.
  • a part of the cutting pins expediently projects beyond the circumferential contour of the drill head.
  • These cutting pins which protrude beyond the circumferential contour, prevent the drill material from being compressed and jammed between the drill head and the wall of the borehole.
  • these cutting pins promote the creation of a high-quality borehole wall and ensure compliance with the exact borehole geometry.
  • the free ends of the cutting pins advantageously lie in the rotational surface formed by the cutting edges of the cutting plate.
  • the rock drill thus attacks the material to be machined simultaneously by the cutting plate and the cutting pins.
  • the wear of the cutting plate and cutting pins is kept low and the drilling progress is only slowed down considerably.
  • the hardness of the cutting pins is advantageously matched to that of the cutting plate, so that the cutting plate and the cutting pins are worn approximately uniformly and the engagement conditions are thus maintained.
  • the rock drill shown in FIGS. 1 to 3 essentially consists of a shank 1 and an associated drill head, designated overall by 2.
  • the shaft 1 is provided with a conveying helix 3, which serves on the one hand to guide the drill in the borehole and on the other hand to remove the cuttings.
  • the drill head 2 is provided with discharge grooves 4 running in the longitudinal direction, which serve for the passage of the cuttings from the end face 2a of the drill head 2 pointing in the feed direction to the shank 1.
  • the drill head 2 is provided with a centrally arranged cutting plate 5.
  • the cutting plate 5 projects beyond the drilling head 2 both in the radial direction and in the feed direction.
  • the remaining end face 2a of the drill head 2 is provided with cutting pins 6, 7.
  • the cutting pin 6 is arranged such that it runs parallel to the drill axis, while the cutting pin 7 is arranged inclined to the drill axis.
  • the cutting pins 6, 7 are inserted so deeply into the drilling head 2 that the free ends of the cutting pins 6, 7 lie in the rotational surface formed by the cutting edges 5a, 5b of the cutting plate 5. This results in uniform wear of the cutting plate 5 and cutting pins 6, 7 during drilling.
  • the rock drill shown in FIG. 4 which is somewhat larger in diameter, consists of a shaft 11 and an associated one, which projects beyond the shaft 11 in the radial direction, a total of 12 designated drill heads.
  • a separate conveyor helix 13 is arranged on the shaft 11.
  • the drill head 12 is provided with a centrally arranged cutting plate 15 on its end face 12a directed in the feed direction.
  • the rotating surface of the cutting plate 15 which arises when the rock drill is rotated is shown in dash-dotted lines.
  • the drill head 12 is also equipped with cutting pins 16, 17, 18, 19 on the end face 12a and on the circumference.
  • the cutting pins 17, 19 are arranged inclined to the drill axis.
  • the cutting pin 16, however, is arranged parallel to the drill axis.
  • the cutting pin 18 is arranged perpendicular to the drill axis and projects beyond the circumferential contour of the drill head 12.
  • the cutting pin 18 is in contact with the borehole wall during drilling and can be used, for example, to roughen it during the drilling process.
  • the cutting pins 16, 17, 18, 19 are arranged on different radii. This results in a good size reduction of the drilling material and an even distribution of the forces on the individual cutting pins. In this rock drill, too, the cutting pins 16, 17, 18, 19 are inserted so deeply into the drilling head 12 that their free end face lies in the rotational surface formed by the cutting edges of the cutting plate 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Steroid Compounds (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Electrotherapy Devices (AREA)
  • Drilling Tools (AREA)
EP86810551A 1985-12-16 1986-12-01 Gesteinsbohrer Expired - Lifetime EP0226537B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3544433A DE3544433C2 (de) 1985-12-16 1985-12-16 Gesteinsbohrer
DE3544433 1985-12-16

Publications (3)

Publication Number Publication Date
EP0226537A2 EP0226537A2 (de) 1987-06-24
EP0226537A3 EP0226537A3 (en) 1988-11-23
EP0226537B1 true EP0226537B1 (de) 1994-06-08

Family

ID=6288555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810551A Expired - Lifetime EP0226537B1 (de) 1985-12-16 1986-12-01 Gesteinsbohrer

Country Status (10)

Country Link
US (1) US4765419A (fi)
EP (1) EP0226537B1 (fi)
JP (2) JPS62141293A (fi)
AT (1) ATE106985T1 (fi)
AU (1) AU587514B2 (fi)
CA (1) CA1266651A (fi)
DE (2) DE3544433C2 (fi)
DK (1) DK173050B1 (fi)
ES (1) ES2056047T3 (fi)
FI (1) FI81295C (fi)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1324013C (en) * 1987-02-09 1993-11-09 Vermont American Corporation Masonary drill tip with strong and chamfered cutting edges
DE3707798A1 (de) * 1987-03-11 1988-09-22 Hawera Probst Kg Hartmetall Gesteinsbohrer
US4883135A (en) * 1987-09-18 1989-11-28 Hawera Probst Gmbh & Co. Apparatus for rock drill
DE3875710D1 (de) * 1987-12-01 1992-12-10 Hawera Probst Kg Hartmetall Gesteinsbohrer.
DE3742661A1 (de) * 1987-12-16 1989-07-13 Hawera Probst Kg Hartmetall Gesteinsbohrer
US5004056A (en) * 1988-05-23 1991-04-02 Goikhman Yakov A Percussion-rotary drilling tool
JPH04500101A (ja) * 1988-05-23 1992-01-09 ヴセソユズニイ　ナウチノ―イススレドヴァテルスキイ　インスティトゥト　トランスポルトノゴ　ストロイテルストヴァ　（ツニイス） 打撃―回転さく孔工具
DE3820695C2 (de) * 1988-06-18 1996-07-25 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE3825107C2 (de) * 1988-07-23 1996-07-11 Hilti Ag Gesteinsbohrer mit Schneidplatte
JP2784830B2 (ja) * 1989-09-04 1998-08-06 ソニー株式会社 ヘッドフォン
JPH0746469Y2 (ja) * 1989-10-25 1995-10-25 新日本製鐵株式会社 穿孔ビット
JPH0810517Y2 (ja) * 1989-10-25 1996-03-29 新日本製鐵株式会社 穿孔ビット
DE4032066C2 (de) * 1990-10-05 1999-04-15 Siegfried Treitz Anordnung und Befestigung von stiftförmigen Schneideinsätzen in Gesteinsbohrkronen
DE4101458A1 (de) * 1991-01-19 1992-07-23 Wolf Thomas Fuer einen mit axialem druck und schlaegen arbeitenden, umlaufenden gesteinsbohrer bestimmter bohrmeissel
TW299385B (en) 1994-12-12 1997-03-01 Black & Decker Inc Cutting tools for drilling concrete, aggregate, masonry or the like materials
US5918105A (en) * 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
US5575342A (en) * 1995-05-26 1996-11-19 Sandvik Ab Percussion drill bit, an insert for use therein and a method of drilling a bore
US5641028A (en) * 1995-08-10 1997-06-24 Black & Decker Inc. Drill bit with debris conveying flute
DE19537900B4 (de) * 1995-10-11 2005-11-03 Irwin Industrial Tool Company (N.D.Ges.D. Staates Delaware), Freeport Drehbohrer
DE19545646A1 (de) * 1995-12-07 1997-06-12 Hilti Ag Drehschlag-Wendelbohrer
DE19545647A1 (de) * 1995-12-07 1997-06-12 Hilti Ag Drehschlag-Wendelbohrer
US5732784A (en) * 1996-07-25 1998-03-31 Nelson; Jack R. Cutting means for drag drill bits
US6044919A (en) * 1997-07-31 2000-04-04 Briese Industrial Technologies, Inc. Rotary spade drill arrangement
US6039127A (en) * 1998-03-13 2000-03-21 Loudon Enterprises, Inc. Rock drill
EP0943780A3 (de) * 1998-03-18 2000-07-19 Plica Werkzeugfabrik Ag Bohrwerkzeug
US20020164218A1 (en) * 2001-02-28 2002-11-07 Ruben Aguirre Fluted drill tool with frustum cutters
DE10351183A1 (de) * 2003-11-03 2005-06-02 Illinois Tool Works Inc., Glenview Gesteinsbohrer
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
PT1860274E (pt) * 2006-04-26 2008-07-31 Bauer Maschinen Gmbh Cabeça de perfuração
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US8616305B2 (en) * 2006-08-11 2013-12-31 Schlumberger Technology Corporation Fixed bladed bit that shifts weight between an indenter and cutting elements
US9145742B2 (en) * 2006-08-11 2015-09-29 Schlumberger Technology Corporation Pointed working ends on a drill bit
US8714285B2 (en) 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US9051795B2 (en) * 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US7637574B2 (en) * 2006-08-11 2009-12-29 Hall David R Pick assembly
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US8590644B2 (en) 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US8292372B2 (en) 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US8960337B2 (en) 2006-10-26 2015-02-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
JP4890515B2 (ja) * 2008-08-08 2012-03-07 ウエタックス株式会社 スピーカ
JP4662508B1 (ja) * 2010-03-01 2011-03-30 株式会社オーディオテクニカ イヤホン
WO2013114864A1 (ja) 2012-01-30 2013-08-08 パナソニック株式会社 イヤホン
US8976994B2 (en) 2012-06-20 2015-03-10 Apple Inc. Earphone having an acoustic tuning mechanism
US9712905B2 (en) 2012-06-20 2017-07-18 Apple Inc. Headsets with non-occluding earbuds
US8971561B2 (en) 2012-06-20 2015-03-03 Apple Inc. Earphone having a controlled acoustic leak port
US9258663B2 (en) 2012-09-07 2016-02-09 Apple Inc. Systems and methods for assembling non-occluding earbuds
CN105723737B (zh) 2013-11-19 2019-03-19 索尼公司 耳机以及声学特性调整方法
JP6701342B2 (ja) 2016-01-29 2020-05-27 ノベル バイオケア サーヴィシィズ アーゲー 歯科用ツール
GB201706687D0 (en) * 2017-04-27 2017-06-14 Rolls Royce Plc A cutting tool

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1056132A (en) * 1911-05-05 1913-03-18 Nikolaus Staub Rock-drill.
FR1006219A (fr) * 1947-12-05 1952-04-21 Taillant de mine à plaquette extra-dure
CH311119A (fr) * 1953-09-02 1955-11-30 Dionisotti Joseph Fleuret pour la perforation de roches.
US3163246A (en) * 1963-04-18 1964-12-29 Westinghouse Air Brake Co Rock drill bit
US3283837A (en) * 1965-02-01 1966-11-08 Acme Fishing Tool Company Drill bit
US3589456A (en) * 1969-08-25 1971-06-29 Acme Fishing Tool Co Drill bit
SU636384A1 (ru) * 1974-02-06 1978-12-05 Институт Горного Дела Со Ан Ссср Коронка дл ударно-вращательного бурени
DE2510265A1 (de) * 1975-03-08 1976-09-16 Richard Karnebogen Bohrkrone fuer schlagende gesteinsbohrmaschinen
DE2528003A1 (de) * 1975-06-24 1977-01-20 Krupp Gmbh Gesteinsbohrer
DE2542001A1 (de) * 1975-09-20 1977-03-24 Bosch Gmbh Robert Gesteinsbohrer
DE2601302A1 (de) * 1976-01-15 1977-07-21 Richard Karnebogen Bohrkrone fuer schlagende gesteinsbohrvorrichtungen
JPS6014B2 (ja) * 1977-09-05 1985-01-05 日東化学工業株式会社 細砕肉からの水溶性蛋白質等の除去法
DE2856205A1 (de) * 1978-12-27 1980-07-10 Hilti Ag Gesteinsbohrer
DE3004077C2 (de) * 1980-02-05 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Bohrkrone
DE8025800U1 (de) * 1980-09-26 1981-02-05 Hawera Probst Gmbh + Co, 7980 Ravensburg Bohrer
DE3044775A1 (de) * 1980-11-27 1982-07-08 Hilti AG, 9494 Schaan Gesteinsbohrer
AU1111183A (en) * 1982-02-03 1983-08-11 Witzand, H.H.G. Drill bit

Also Published As

Publication number Publication date
ATE106985T1 (de) 1994-06-15
JPH0720386U (ja) 1995-04-11
DK603586A (da) 1987-06-17
AU6647586A (en) 1987-06-18
DK603586D0 (da) 1986-12-15
ES2056047T3 (es) 1994-10-01
FI865068A (fi) 1987-06-17
DE3544433C2 (de) 1995-12-14
JPH086865Y2 (ja) 1996-02-28
US4765419A (en) 1988-08-23
JPS62141293A (ja) 1987-06-24
CA1266651A (en) 1990-03-13
AU587514B2 (en) 1989-08-17
DK173050B1 (da) 1999-12-06
FI81295B (fi) 1990-06-29
EP0226537A2 (de) 1987-06-24
EP0226537A3 (en) 1988-11-23
FI81295C (fi) 1990-10-10
FI865068A0 (fi) 1986-12-12
DE3544433A1 (de) 1987-06-19
DE3689900D1 (de) 1994-07-14

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