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EP0402624A3 - Drehschlagbohrer für ein von Hand führbares Bohrgerät - Google Patents

Drehschlagbohrer für ein von Hand führbares Bohrgerät Download PDF

Info

Publication number
EP0402624A3
EP0402624A3 EP19900108763 EP90108763A EP0402624A3 EP 0402624 A3 EP0402624 A3 EP 0402624A3 EP 19900108763 EP19900108763 EP 19900108763 EP 90108763 A EP90108763 A EP 90108763A EP 0402624 A3 EP0402624 A3 EP 0402624A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
hard metal
metal pins
rotation
drilling machine
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
EP19900108763
Other languages
English (en)
French (fr)
Other versions
EP0402624A2 (de
EP0402624B1 (de
Inventor
Gerhard Schroth
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.)
Friedrich Duss Maschinenfabrik & Co GmbH
Original Assignee
Friedrich Duss Maschinenfabrik & Co 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 Friedrich Duss Maschinenfabrik & Co GmbH filed Critical Friedrich Duss Maschinenfabrik & Co GmbH
Publication of EP0402624A2 publication Critical patent/EP0402624A2/de
Publication of EP0402624A3 publication Critical patent/EP0402624A3/de
Application granted granted Critical
Publication of EP0402624B1 publication Critical patent/EP0402624B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

In zylindrischen Aufashmebohrungen des Bohrkopfes (10) sind wenigstens zwei Hartmetallstifte (11′) verankert, die über die benachbarte Mantelfläche (10a) des Bohrkopfes (10) radial vor­ stehen. Die Hartmetallstifte (11′) weisen ein polygonales Quer­ schnittsprofil auf. Sie sind an der inneren Mantelfläche ihrer Auf­ nahmebohrung (12) mittels ihrer Längskanten (11a) zentriert. Da­ durch wird der Drehwiderstand, den der Bohrer bei der Bohrarbeit zu überwinden hat, verringert. Zugleich ist ein gesteigerter Bohr­ fortschritt zu verzeichnen. Andererseits ist auch die Gefahr eines Bruches der Hartmetallstifte (11′) im Gefolge der rhytmischen axialen Schläge verringert.
EP19900108763 1989-06-13 1990-05-10 Drehschlagbohrer für ein von Hand führbares Bohrgerät Expired - Lifetime EP0402624B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893919264 DE3919264C2 (de) 1989-06-13 1989-06-13 Drehschlagbohrer für ein von Hand führbares Bohrgerät
DE3919264 1989-06-13

Publications (3)

Publication Number Publication Date
EP0402624A2 EP0402624A2 (de) 1990-12-19
EP0402624A3 true EP0402624A3 (de) 1991-07-31
EP0402624B1 EP0402624B1 (de) 1994-07-20

Family

ID=6382655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900108763 Expired - Lifetime EP0402624B1 (de) 1989-06-13 1990-05-10 Drehschlagbohrer für ein von Hand führbares Bohrgerät

Country Status (2)

Country Link
EP (1) EP0402624B1 (de)
DE (1) DE3919264C2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236553A1 (de) * 1992-10-29 1994-05-05 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE19516270C1 (de) * 1995-05-09 1997-01-30 Heller Dinklage Gmbh Geb Bohrwerkzeug
WO2013136113A1 (en) * 2012-03-12 2013-09-19 Flexidrill Limited Hybrid drill bit
CN109693321B (zh) * 2019-02-13 2023-04-07 大同宇林德石墨新材料股份有限公司 一种快速精准定位毛坯石墨电极端面中心孔的工具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1174641A (fr) * 1957-05-07 1959-03-13 Diabor Procédé pour la fixation de taillants rapportés sur des outils de coupe et outils de coupe, notamment couronnes de forage, ainsi obtenus
DE2522300A1 (de) * 1975-05-20 1976-12-02 Krupp Gmbh Bohrwerkzeug
DE3408225A1 (de) * 1984-03-07 1985-09-19 Richard 5383 Kierspe Karnebogen Schlagbohrkrone
DE3831535A1 (de) * 1987-09-16 1989-03-30 Mitsubishi Metal Corp Stirnfraeser

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE354355C (de) * 1922-06-08 Otto Pohle Verstellbares zweiteiliges Bohrmesser
US3581835A (en) * 1969-05-08 1971-06-01 Frank E Stebley Insert for drill bit and manufacture thereof
DE2423510A1 (de) * 1974-05-15 1975-11-27 Krupp Gmbh Gesteinsbohrer
DE2423511A1 (de) * 1974-05-15 1975-11-27 Krupp Gmbh Bohrer mit foerderwendel
DE2528003A1 (de) * 1975-06-24 1977-01-20 Krupp Gmbh Gesteinsbohrer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1174641A (fr) * 1957-05-07 1959-03-13 Diabor Procédé pour la fixation de taillants rapportés sur des outils de coupe et outils de coupe, notamment couronnes de forage, ainsi obtenus
DE2522300A1 (de) * 1975-05-20 1976-12-02 Krupp Gmbh Bohrwerkzeug
DE3408225A1 (de) * 1984-03-07 1985-09-19 Richard 5383 Kierspe Karnebogen Schlagbohrkrone
DE3831535A1 (de) * 1987-09-16 1989-03-30 Mitsubishi Metal Corp Stirnfraeser

Also Published As

Publication number Publication date
DE3919264C2 (de) 1997-01-23
EP0402624A2 (de) 1990-12-19
DE3919264A1 (de) 1990-12-20
EP0402624B1 (de) 1994-07-20

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