EP2775090A3 - Drill bit - Google Patents

Drill bit Download PDF

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Publication number
EP2775090A3
EP2775090A3 EP14450008.9A EP14450008A EP2775090A3 EP 2775090 A3 EP2775090 A3 EP 2775090A3 EP 14450008 A EP14450008 A EP 14450008A EP 2775090 A3 EP2775090 A3 EP 2775090A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
cutting edge
face
over
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Withdrawn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
EP14450008.9A
Other languages
German (de)
French (fr)
Other versions
EP2775090A2 (en
Inventor
Karl BÖHM
Dieter GLANTSCHNEGG
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.)
Dywidag Systems International GmbH Austria
Original Assignee
Dywidag Systems International GmbH Austria
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 Dywidag Systems International GmbH Austria filed Critical Dywidag Systems International GmbH Austria
Publication of EP2775090A2 publication Critical patent/EP2775090A2/en
Publication of EP2775090A3 publication Critical patent/EP2775090A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Abstract

Bei einer Bohrkrone (1) für eine Vorrichtung zum Bohren von Löchern in weichem bzw. mildem Boden- oder Gesteinsmaterial mit einer Mehrzahl von sich zumindest über eine Stirnfläche (2) der Bohrkrone (1) erstreckenden Schneiden (3, 5), welche Schneiden (3, 5) mit sowohl wenigstens zwei voneinander verschiedenen "radialen" Erstreckungen als auch zwei voneinander verschiedenen "axialen" Erstreckungen in Richtung einer Drehachse (6) der Bohrkrone (1) ausgebildet sind, sowie wenigstens eine Öffnung (11) zum Ausbringen von Spülfluid, erstreckt sich eine eine geringere radiale Erstreckung aufweisende erste Schneide (3) über den gesamten Bohrkronendurchmesser (a), sind an die eine geringere radiale Erstreckung aufweisende erste Schneide (3) zwei über einen Außenumfang der Stirnfläche (2) der Bohrkrone (1) weiter als die erste Schneide (3) vorragende zweite Schneiden (5) vorgesehen und die zweiten Schneiden (5) sind im Bereich der Stirnfläche (2) der Bohrkrone (1) und/oder im Bereich eines Bohrkronenschafts (4) geneigt, mit der ersten Schneide (3) und/oder der mit der Drehachse (6) der Bohrkrone (1) einen spitzen Winkel (α) einschließend ausgebildet.

Figure imgaf001
In a drill bit (1) for a device for drilling holes in soft soil or rock material having a plurality of cutting edges (3, 5) extending at least over an end face (2) of the drill bit (1) which cut ( 3, 5) with both at least two mutually different "radial" extensions and two mutually different "axial" extensions in the direction of a rotation axis (6) of the drill bit (1) are formed, and at least one opening (11) for discharging flushing fluid, extends a lower radial extent having first cutting edge (3) over the entire Bohrkronendurchmesser (a), to the lower radial extent having first cutting edge (3) two over an outer periphery of the end face (2) of the drill bit (1) on the first cutting edge (3) projecting second cutting (5) provided and the second cutting edges (5) are in the region of the end face (2) of the drill bit (1) and / or in the area a drill bit shank (4) inclined, with the first cutting edge (3) and / or with the axis of rotation (6) of the drill bit (1) formed an acute angle (α) including.
Figure imgaf001
EP14450008.9A 2013-03-05 2014-03-05 Drill bit Withdrawn EP2775090A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATGM72/2013U AT13738U1 (en) 2013-03-05 2013-03-05 drill bit

Publications (2)

Publication Number Publication Date
EP2775090A2 EP2775090A2 (en) 2014-09-10
EP2775090A3 true EP2775090A3 (en) 2016-05-18

Family

ID=51176839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14450008.9A Withdrawn EP2775090A3 (en) 2013-03-05 2014-03-05 Drill bit

Country Status (2)

Country Link
EP (1) EP2775090A3 (en)
AT (1) AT13738U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907112B (en) * 2017-05-05 2023-06-20 宜昌神达科技有限公司 PDC drill bit for well drilling

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1169369A (en) * 1916-01-25 Samuel Peck Drill.
DE865874C (en) * 1941-05-09 1953-02-05 Wengeler & Kalthoff Rock impact drill with carbide tipped chisel cutting edge
DE937101C (en) * 1949-03-11 1955-12-29 Gerhard Kuehne Rock drill for rotary drilling
DE941182C (en) * 1952-03-18 1956-04-05 Wilhelm Steinkopf Impact drill bit for rock drill
FR1265943A (en) * 1960-05-25 1961-07-07 Europ De Turboforage Soc Drill bit for soil drilling
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
DE2701044A1 (en) * 1976-01-12 1977-07-21 Reed Tool Co EARTH DRILLING JIG
DE4012772A1 (en) * 1990-04-21 1991-10-24 Westa Werkzeugbau Hammer drill bit - has cruciform cutters with notches in two opposite ones
DE29611966U1 (en) * 1996-07-10 1997-11-13 Ischebeck Friedrich Gmbh Core bit
AT12096U1 (en) * 2009-12-23 2011-10-15 Dywidag Systems Int Gmbh DRILLING CIRCULAR FOR DRILLING, IN PARTICULAR PUNCHING OR DRILLING OF HOLES IN GROUND OR ROCK MATERIALS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545648A1 (en) * 1995-12-07 1997-06-12 Hilti Ag Rotary impact twist drill
DE19724373A1 (en) * 1997-06-10 1998-12-17 Hilti Ag Rock drill
DE19916975A1 (en) 1999-04-15 2000-10-19 Hilti Ag Rock drill
DE10053344A1 (en) * 2000-10-27 2002-05-08 Hilti Ag rock drill
DE102008043999A1 (en) * 2008-11-24 2010-05-27 Robert Bosch Gmbh Drilling tool, in particular for drilling and / or chiseling devices

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1169369A (en) * 1916-01-25 Samuel Peck Drill.
DE865874C (en) * 1941-05-09 1953-02-05 Wengeler & Kalthoff Rock impact drill with carbide tipped chisel cutting edge
DE937101C (en) * 1949-03-11 1955-12-29 Gerhard Kuehne Rock drill for rotary drilling
DE941182C (en) * 1952-03-18 1956-04-05 Wilhelm Steinkopf Impact drill bit for rock drill
FR1265943A (en) * 1960-05-25 1961-07-07 Europ De Turboforage Soc Drill bit for soil drilling
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
DE2701044A1 (en) * 1976-01-12 1977-07-21 Reed Tool Co EARTH DRILLING JIG
DE4012772A1 (en) * 1990-04-21 1991-10-24 Westa Werkzeugbau Hammer drill bit - has cruciform cutters with notches in two opposite ones
DE29611966U1 (en) * 1996-07-10 1997-11-13 Ischebeck Friedrich Gmbh Core bit
AT12096U1 (en) * 2009-12-23 2011-10-15 Dywidag Systems Int Gmbh DRILLING CIRCULAR FOR DRILLING, IN PARTICULAR PUNCHING OR DRILLING OF HOLES IN GROUND OR ROCK MATERIALS

Also Published As

Publication number Publication date
AT13738U1 (en) 2014-07-15
EP2775090A2 (en) 2014-09-10

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