EP0730082A3 - Drill bit for percussive drilling - Google Patents

Drill bit for percussive drilling Download PDF

Info

Publication number
EP0730082A3
EP0730082A3 EP96102389A EP96102389A EP0730082A3 EP 0730082 A3 EP0730082 A3 EP 0730082A3 EP 96102389 A EP96102389 A EP 96102389A EP 96102389 A EP96102389 A EP 96102389A EP 0730082 A3 EP0730082 A3 EP 0730082A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
drill
outer contour
bit base
base
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
EP96102389A
Other languages
German (de)
French (fr)
Other versions
EP0730082B1 (en
EP0730082A2 (en
Inventor
Bernhard Moser
Hans P. Meyen
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.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Hawera Probst GmbH
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 Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG, Hawera Probst GmbH filed Critical Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Publication of EP0730082A2 publication Critical patent/EP0730082A2/en
Publication of EP0730082A3 publication Critical patent/EP0730082A3/en
Application granted granted Critical
Publication of EP0730082B1 publication Critical patent/EP0730082B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)

Abstract

Es wird eine Bohrkrone insbesondere für drehschlagendes Bohren von vorzugsweise Gestein, Beton oder dergleichen, die im wesentlichen aus einem dünnwandigen, zur Bohrseite offenen, zylindrischen Bohrkörper (106) und einem im wesentlichen radial sich erstreckenden Bohrkronenboden (20) mit axial angeordnetem Bohrkronenschaft (101) zur Befestigung der Bohrkrone besteht, vorgeschlagen, wobei der Bohrkronenboden (20) in radialer Richtung eine Außenkontur besitzt, die einem Kurvenverlauf folgt, der wenigstens einen Wendepunkt aufweist. Desweiteren wird eine Bohrkrone vorgeschlagen, deren Bohrkronenboden (20) eine Außenkontur besitzt, die in radialer Richtung ein Minimum durchläuft, wobei der Bohrkronenboden im ansteigenden radial äußeren Kurvenabschnitt seiner Außenkontur mit dem zylindrischen Bohrkörper verbunden ist. Weitere unabhängige Merkmale der erfindungsgemäßen Bohrkrone sind wenigstens eine an der Innenseite des Bohrkronenbodens zur Zertrümmerung des zu bohrenden Materials aus der Kontur der Innenseite hervorstehende Erhebung (19) beziehungsweise eine Bohrmehlabführnut (109) mit variabler Steigung an der Außenkontur des Bohrkörpers (106).

Figure 00000001
It becomes a drill bit, in particular for rotary drilling of preferably rock, concrete or the like, which essentially consists of a thin-walled, cylindrical drill body (106) open to the drill side and a substantially radially extending drill bit base (20) with an axially arranged drill bit shaft (101) for fastening the drill bit there is proposed, the drill bit base (20) having an outer contour in the radial direction which follows a curve which has at least one turning point. Furthermore, a drill bit is proposed, the drill bit base (20) of which has an outer contour that runs through a minimum in the radial direction, the drill bit base being connected to the cylindrical drill body in the increasing radially outer curve section of its outer contour. Further independent features of the drill bit according to the invention are at least one elevation (19) protruding on the inside of the drill bit base to destroy the material to be drilled from the contour of the inside, or a drilling dust removal groove (109) with a variable pitch on the outer contour of the drill body (106).
Figure 00000001
EP96102389A 1995-03-03 1996-02-17 Drill bit for percussive drilling Expired - Lifetime EP0730082B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19507487 1995-03-03
DE19507487A DE19507487A1 (en) 1995-03-03 1995-03-03 Drill bit for rotary drilling of preferably rock, concrete or the like

Publications (3)

Publication Number Publication Date
EP0730082A2 EP0730082A2 (en) 1996-09-04
EP0730082A3 true EP0730082A3 (en) 1998-02-04
EP0730082B1 EP0730082B1 (en) 2002-05-29

Family

ID=7755572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102389A Expired - Lifetime EP0730082B1 (en) 1995-03-03 1996-02-17 Drill bit for percussive drilling

Country Status (4)

Country Link
US (1) US5791424A (en)
EP (1) EP0730082B1 (en)
JP (2) JPH08260863A (en)
DE (2) DE19507487A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654597B4 (en) * 1996-12-20 2006-11-09 Robert Bosch Gmbh drill bit
DE29723908U1 (en) 1997-12-04 1999-05-27 Hawera Probst GmbH, 88212 Ravensburg Rock drilling tool
US6494276B1 (en) * 1998-04-24 2002-12-17 Gator Rock Bits, Inc. Rock auger with pilot drill
DE19915304B4 (en) * 1999-03-22 2006-07-27 Robert Bosch Gmbh drilling
GB2427843B (en) * 2005-10-24 2008-05-07 C4 Carbides Ltd Drill bit
US7740088B1 (en) * 2007-10-30 2010-06-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic rotary-hammer drill
EP2153880A1 (en) * 2008-07-31 2010-02-17 Urea Casale S.A. Process and plant for the production of a urea solution for use in SCR process for reduction of Nox
DE102012203088A1 (en) 2012-02-29 2013-08-29 Robert Bosch Gmbh drill bit
DE102012212042A1 (en) * 2012-07-10 2014-01-30 Robert Bosch Gmbh Rotary drill bit e.g. machine-driven drill bit for drilling of e.g. reinforced concrete, has cutting element that is composed of two welding points which is cohesively welded on surface portion of surface area of drill sleeve
US9820757B2 (en) * 2013-04-12 2017-11-21 Greatbatch Ltd. Instrument for reshaping the head of a femur
CN103628819B (en) * 2013-11-20 2016-04-20 中国石油集团渤海钻探工程有限公司 A kind of nearly drill bit reverse impactor
CN104196460B (en) * 2014-08-25 2017-05-03 江苏长城石油装备制造有限公司 Rotary combined type PDC drill bit for natural gas rock core drilling
US10005137B2 (en) 2015-10-22 2018-06-26 Y. G-1 Tool. Co. Cutting tool
CN105569573A (en) * 2015-12-15 2016-05-11 武汉地大长江钻头有限公司 PDC drill bit applicable to core drilling of moon
CN105735901A (en) * 2016-05-06 2016-07-06 中铁大桥局集团第四工程有限公司 Combinative drilling tool of rotary excavating drilling machine
CN113369502B (en) * 2021-06-28 2022-05-06 成都飞机工业（集团）有限责任公司 Turning method of ultrathin-wall bushing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735368A1 (en) * 1977-08-05 1979-02-15 Hawera Probst Kg Hartmetall ROCK DRILLS WITH CARBIDE DRILL HEAD
DE2913501A1 (en) * 1979-04-04 1980-10-16 Bosch Gmbh Robert Trepanning drill bit assembly - has passage to flushing seat from end face between cutters through shank

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559680A (en) * 1920-10-30 1925-11-03 Denne Mark Thomas Rotary knife or cutter
US1572386A (en) * 1923-07-16 1926-02-09 Leroy G Gates Rotary drill bit
DE841892C (en) * 1950-12-12 1952-06-19 Deilmann Bergbau G M B H C Method and device for the production of large diameter core boreholes
US3127944A (en) * 1959-09-04 1964-04-07 Frank F Davis Drilling saw
US3055443A (en) * 1960-05-31 1962-09-25 Jersey Prod Res Co Drill bit
US3845830A (en) * 1973-02-22 1974-11-05 Texaco Inc Method for making high penetration rate drill bits and two bits made thereby
DD134591A1 (en) * 1976-07-30 1979-03-07 Andreas Wolf CIRCUIT ARRANGEMENT FOR CODING AND DECODING COLOR TV SIGNALS
DE3049135A1 (en) * 1980-12-24 1982-07-15 Hawera Probst Gmbh + Co, 7980 Ravensburg DRILLS, ESPECIALLY DRILLING DRILLS
DE3317989A1 (en) * 1983-05-18 1984-11-22 Hawera Probst Gmbh + Co, 7980 Ravensburg DRILLING TOOL
DE3705717A1 (en) * 1987-02-23 1988-09-01 Erich Wezel Box countersink or hollow drill bit and production process for this
SU1653910A1 (en) * 1988-07-05 1991-06-07 Предприятие П/Я М-5612 Drill
US5015128A (en) * 1990-03-26 1991-05-14 Ross Jr Donald C Rotary drill apparatus
US5213456A (en) * 1991-09-19 1993-05-25 Lee Valley Tools, Ltd. Plug cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735368A1 (en) * 1977-08-05 1979-02-15 Hawera Probst Kg Hartmetall ROCK DRILLS WITH CARBIDE DRILL HEAD
DE2913501A1 (en) * 1979-04-04 1980-10-16 Bosch Gmbh Robert Trepanning drill bit assembly - has passage to flushing seat from end face between cutters through shank

Also Published As

Publication number Publication date
JP3950151B2 (en) 2007-07-25
DE19507487A1 (en) 1996-09-05
JP2006096048A (en) 2006-04-13
EP0730082B1 (en) 2002-05-29
DE59609243D1 (en) 2002-07-04
US5791424A (en) 1998-08-11
EP0730082A2 (en) 1996-09-04
JPH08260863A (en) 1996-10-08

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