EP0884448A3 - Rock drill bit with helical evacuation grooves - Google Patents

Rock drill bit with helical evacuation grooves Download PDF

Info

Publication number
EP0884448A3
EP0884448A3 EP98810413A EP98810413A EP0884448A3 EP 0884448 A3 EP0884448 A3 EP 0884448A3 EP 98810413 A EP98810413 A EP 98810413A EP 98810413 A EP98810413 A EP 98810413A EP 0884448 A3 EP0884448 A3 EP 0884448A3
Authority
EP
European Patent Office
Prior art keywords
cutting edge
drill
rock drill
drill bit
evacuation grooves
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
EP98810413A
Other languages
German (de)
French (fr)
Other versions
EP0884448A2 (en
EP0884448B1 (en
Inventor
Udo Hauptmann
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 EP0884448A2 publication Critical patent/EP0884448A2/en
Publication of EP0884448A3 publication Critical patent/EP0884448A3/en
Application granted granted Critical
Publication of EP0884448B1 publication Critical patent/EP0884448B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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 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

Abstract

Ein Gesteinsbohrer besitzt einen Bohrerschaft (2) mit wenigstens einer wendelförmig entlang seiner Längserstreckung verlaufenden Abfuhrnut (3) für abgetragenes Bohrgut und einen gesamthaft aus Hartmetall bestehenden Bohrkopf (5). Der Bohrkopf (5) ist mit dem Stirnende des Bohrerschafts (2) verbunden, beispielsweise verschweisst oder verlötet, und weist eine Hauptschneide (6) sowie wenigstens eine Zusatzschneide (7, 8) auf, die jeweils entlang von Diagonalen des Bohrkopfes angeordnet sind. Die Zusatzschneide (7, 8) überragt den peripheren Bereich (10, 11) der Hauptschneide (6) axial.

Figure 00000001
A rock drill has a drill shank (2) with at least one discharge groove (3), which runs helically along its longitudinal extent, for removed drillings, and a drill head (5) made entirely of hard metal. The drill head (5) is connected to the front end of the drill shaft (2), for example welded or soldered, and has a main cutting edge (6) and at least one additional cutting edge (7, 8), which are each arranged along diagonals of the drilling head. The additional cutting edge (7, 8) axially projects beyond the peripheral area (10, 11) of the main cutting edge (6).
Figure 00000001
EP98810413A 1997-06-10 1998-05-07 Rock drill bit with helical evacuation grooves Expired - Lifetime EP0884448B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724373 1997-06-10
DE19724373A DE19724373A1 (en) 1997-06-10 1997-06-10 Rock drill

Publications (3)

Publication Number Publication Date
EP0884448A2 EP0884448A2 (en) 1998-12-16
EP0884448A3 true EP0884448A3 (en) 2002-03-27
EP0884448B1 EP0884448B1 (en) 2004-12-08

Family

ID=7832000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810413A Expired - Lifetime EP0884448B1 (en) 1997-06-10 1998-05-07 Rock drill bit with helical evacuation grooves

Country Status (5)

Country Link
US (1) US6129162A (en)
EP (1) EP0884448B1 (en)
JP (1) JP4046851B2 (en)
DE (2) DE19724373A1 (en)
DK (1) DK0884448T3 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916975A1 (en) * 1999-04-15 2000-10-19 Hilti Ag Rock drill
DE19942985A1 (en) 1999-09-09 2001-03-15 Hilti Ag Drilling tool
DE19964272C2 (en) * 1999-09-16 2003-05-28 Heller Dinklage Gmbh Geb Drills, in particular rock drills
US6374931B1 (en) * 1999-11-03 2002-04-23 Relton Corporation Multiple cutter rotary hammer bit
DE10006932A1 (en) * 2000-02-16 2001-08-23 Hilti Ag Rock drilling tool
DE10006936A1 (en) * 2000-02-16 2001-08-23 Hilti Ag Rock drilling tool
DE10009732A1 (en) * 2000-03-02 2001-09-06 Hawera Probst Gmbh Rock drill has drill head, spiral conveyor with main and subsidiary webs, conveyor edges, main and subsidiary cutter-blades.
DE10024433A1 (en) * 2000-05-19 2001-11-29 Hawera Probst Gmbh Rock drill
DE10117262A1 (en) * 2001-01-17 2002-07-18 Hilti Ag Rock drill has head with main and subsidiary blades, curved and diametrically opposite cutting edges, and point
GB2393681A (en) * 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool
US6996247B2 (en) * 2002-11-05 2006-02-07 Step Technologies, Inc. Push-push multiple magnetic air gap transducer
DE10360707A1 (en) 2002-12-19 2004-07-08 Hawera Probst Gmbh Rock drill used e.g. in hammer drills for drilling rock comprises a drill head having at its end a trapezoidal or X-shaped receiving groove for a cutting element
US7540696B1 (en) * 2004-01-15 2009-06-02 Century Tool & Design, Inc. Spot drilling insert
DE102004028099A1 (en) * 2004-06-09 2005-12-29 Hilti Ag drill
EP1875032B1 (en) * 2005-04-28 2010-09-01 Irwin Industrial Tool Company A/S A drilling tool
DE102006020538A1 (en) * 2006-05-03 2007-11-15 Irwin Industrial Tools Gmbh Drilling head for drilling tool and drilling tool
DE102006000221A1 (en) * 2006-05-10 2007-11-15 Hilti Ag Hard material drilling head
JP2008062620A (en) * 2006-09-11 2008-03-21 Miyanaga:Kk Drill bit
DE102006035443B3 (en) * 2006-11-15 2008-02-21 Hilti Ag Drilling tool particularly impact drilling bit for rock and reinforced concrete, which is used with high performance hand tool machine, has helical shaft, where one-piece hard material head is fixed on axial shaft end
US20080166194A1 (en) * 2007-01-09 2008-07-10 Durfee Laverne R Drill bit
US20100003094A1 (en) * 2007-01-09 2010-01-07 Irwin Industrial Tool Company Drill bit
US20090148250A1 (en) * 2007-12-05 2009-06-11 Wayne Chappell Drill Bit
US8070397B2 (en) * 2008-02-19 2011-12-06 Irwin Industrial Tool Company Self feed bit
DE102008043999A1 (en) * 2008-11-24 2010-05-27 Robert Bosch Gmbh Drilling tool, in particular for drilling and / or chiseling devices
US7861807B2 (en) 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
DE102008054869B4 (en) 2008-12-18 2010-09-02 Hilti Aktiengesellschaft Drilling head for rock drills
US20100307640A1 (en) * 2009-06-03 2010-12-09 Durfee La Verne R Cutting edge and cutting tool
AT13738U1 (en) * 2013-03-05 2014-07-15 Dywidag Systems Int Gmbh drill bit
CN104251121A (en) * 2014-09-18 2014-12-31 武汉地大长江钻头有限公司 PDC drill bit capable for forming coarse particle rock cuttings and suitable for petroleum exploratory well
DE102015220634A1 (en) * 2015-10-22 2017-06-29 Robert Bosch Gmbh drilling
EP3336302A1 (en) * 2016-12-16 2018-06-20 HILTI Aktiengesellschaft Driller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951761A (en) * 1988-06-18 1990-08-28 Hawera Probst Gmbh & Co. Rock drill
EP0607958A1 (en) * 1993-01-22 1994-07-27 DreBo Werkzeugfabrik GmbH Rock drill bit
DE4306981A1 (en) * 1993-03-05 1994-09-08 Keil Werkzeugfabrik Karl Eisch Drill for rock or the like
EP0654580A2 (en) * 1993-11-18 1995-05-24 HILTI Aktiengesellschaft Twist drill
US5482124A (en) * 1993-12-11 1996-01-09 Hawera Probst Gmbh + Co. Rock drill

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707798A1 (en) * 1987-03-11 1988-09-22 Hawera Probst Kg Hartmetall ROCK DRILL
DE19545647A1 (en) * 1995-12-07 1997-06-12 Hilti Ag Rotary impact twist drill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951761A (en) * 1988-06-18 1990-08-28 Hawera Probst Gmbh & Co. Rock drill
EP0607958A1 (en) * 1993-01-22 1994-07-27 DreBo Werkzeugfabrik GmbH Rock drill bit
DE4306981A1 (en) * 1993-03-05 1994-09-08 Keil Werkzeugfabrik Karl Eisch Drill for rock or the like
EP0654580A2 (en) * 1993-11-18 1995-05-24 HILTI Aktiengesellschaft Twist drill
US5482124A (en) * 1993-12-11 1996-01-09 Hawera Probst Gmbh + Co. Rock drill

Also Published As

Publication number Publication date
US6129162A (en) 2000-10-10
JPH1193558A (en) 1999-04-06
JP4046851B2 (en) 2008-02-13
EP0884448A2 (en) 1998-12-16
DK0884448T3 (en) 2005-04-11
EP0884448B1 (en) 2004-12-08
DE59812348D1 (en) 2005-01-13
DE19724373A1 (en) 1998-12-17

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