EP0685629B1 - Gesteinsbohrer - Google Patents

Gesteinsbohrer Download PDF

Info

Publication number
EP0685629B1
EP0685629B1 EP95810187A EP95810187A EP0685629B1 EP 0685629 B1 EP0685629 B1 EP 0685629B1 EP 95810187 A EP95810187 A EP 95810187A EP 95810187 A EP95810187 A EP 95810187A EP 0685629 B1 EP0685629 B1 EP 0685629B1
Authority
EP
European Patent Office
Prior art keywords
flutes
drill
drill bit
diametrically opposed
drill head
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
EP95810187A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0685629A2 (de
EP0685629A3 (de
Inventor
Rainer Batliner
Axel Neukirchen
Anton Knoller
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 EP0685629A2 publication Critical patent/EP0685629A2/de
Publication of EP0685629A3 publication Critical patent/EP0685629A3/de
Application granted granted Critical
Publication of EP0685629B1 publication Critical patent/EP0685629B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • 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

Definitions

  • the invention relates to a rock drill with a clamping shank, at least one four parallel flutes with flutes and a drill head connected to the drill shaft and made entirely of hard metal with four discharge grooves arranged around the circumference, with the clear cross sections of the delivery and flute covers.
  • Rock drills of the type in question are used to drill holes in Rock, concrete, masonry and the like. It is known that the rock drill is in the area wear the tip of the drill extremely quickly when drilling in hard ground. That is why rock drills are equipped with hard metal, under hard metal understood sintered or melted carbides, silicates, borides or their alloys become.
  • Such a rock drill is known from US Pat. No. 2,673,716.
  • This rock drill has a total of hard metal connected to the drill shank Drilling head, the four extraction grooves arranged evenly distributed around the circumference, which run in the longitudinal direction of the drill head.
  • the drill head has a centrally arranged projection, which protrudes into a corresponding recess in the drill shank.
  • the invention has for its object a rock drill with a hard metal to create existing drill head, which is characterized by high drilling performance, long service life, characterized by quiet running and good drilling cuttings.
  • this is achieved in that the discharge grooves of the drill head have a different sized, clear cross section.
  • the larger discharge ducts form the main discharge channels and the further discharge pipes, which are made smaller, the secondary discharge channels.
  • the clear cross sections of different sizes can be formed of Abfuhmuten, which expediently have a different radial distance from the center of the drill head.
  • the radial extension of the first two discharge grooves advantageously corresponds to that 0.05 to 0.25 times the outside diameter of the drill head.
  • the radial extension of the two second discharge grooves preferably correspond to 0.1 to 0.35 times the outside diameter of the drill head. Due to the relatively deeply trained execution paths the extent of the discharge grooves in the circumferential direction of the drill head is small and that part the circumference of the drill head, which is supported on the borehole wall, kept large become.
  • the Abfuhmuten are arranged running in the longitudinal direction of the drill head.
  • the drill cuttings reach the flutes of the Drill shaft, the flutes of the drill shaft advantageously spiral are trained.
  • the spiral flutes ensure further transport of the removed cuttings from the deepest part of the borehole to the Surface of the borehole.
  • the rock drill shown in FIGS. 1 and 2 has a clamping shank 1, a drill shaft 2 with four flutes 4, 5, 6, 7 arranged parallel to one another, which are formed in a spiral and one connected to the drill shaft 2, in total made of hard metal drill head 3 with four evenly distributed around the circumference arranged Abfuhmuten 8, 9, 10, 11.
  • the radial distances R1 from the center Z of the Boring head 3 of two first, diametrically opposite extraction grooves 8, 10 are smaller than the radial distances R2 from two second diametrically opposite one another Execution 9, 11.
  • At least one cutting edge 12 is arranged, which at least partially along the Front side extends over the entire diameter of the drill head 3. This cutting edge 12 is used to remove drill cuttings, not shown.
  • the drill head 13 shown in Fig. 3 has four Abfuhmuten 14, 15, 16, 17, the regular are distributed around the circumference.
  • the clear cross sections of two first, each other diametrically opposite discharge grooves 14, 16 are larger than the clear ones Cross-sections of two second, diametrically opposite, exhaust grooves 15, 17.
  • the extensions B1, B3 of the discharge grooves 14, 16 in the circumferential direction of the drill head 13 are larger than the extensions B2, B4 of the delivery rods 15, 17.
  • the discharge grooves 14, 16 are opposite the discharge grooves 15, 17 at an angle W of 90 ° arranged.
  • the drill head 23 shown in FIG. 4 has four discharge grooves arranged distributed around the circumference 24, 25, 26, 27, which run in the longitudinal direction of the drill head 23.
  • the discharge grooves 24, 25, 26, 27 have a clear cross-section of different sizes. Therefore the Abfuhmuten 24, 25, 26, 27 have a different radial distance R3, R4, R5, R6 from the center Z of the drill head 23.
  • the drill head 3 shown in FIGS. 1 and 2 has an outer diameter D which is essentially of the same size as the outside diameter of the drill shank Second
  • the drill head 3 is connected to the drill shaft 2, for example, by a solder connection.
  • the better centering during the soldering process and the formation of a Larger connecting surface serve centering means, not shown, in the form of projections on the drill head 3, which are formed in appropriately designed depressions, not shown of the drill shaft 2 protrude. These projections or depressions are special arranged in the central area of the rock drill. Such advances can be conical, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Steroid Compounds (AREA)
EP95810187A 1994-06-04 1995-03-20 Gesteinsbohrer Expired - Lifetime EP0685629B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4419641A DE4419641A1 (de) 1994-06-04 1994-06-04 Gesteinsbohrer
DE4419641 1994-06-04

Publications (3)

Publication Number Publication Date
EP0685629A2 EP0685629A2 (de) 1995-12-06
EP0685629A3 EP0685629A3 (de) 1996-12-18
EP0685629B1 true EP0685629B1 (de) 2002-08-14

Family

ID=6519846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810187A Expired - Lifetime EP0685629B1 (de) 1994-06-04 1995-03-20 Gesteinsbohrer

Country Status (16)

Country Link
US (1) US5553682A (fi)
EP (1) EP0685629B1 (fi)
JP (1) JPH07329049A (fi)
KR (1) KR960000438A (fi)
CN (1) CN1116683A (fi)
AT (1) ATE222321T1 (fi)
AU (1) AU690659B2 (fi)
CA (1) CA2150164C (fi)
CZ (1) CZ82895A3 (fi)
DE (2) DE4419641A1 (fi)
DK (1) DK0685629T3 (fi)
ES (1) ES2181759T3 (fi)
FI (1) FI108622B (fi)
HU (1) HU216598B (fi)
PL (1) PL308889A1 (fi)
TW (1) TW284718B (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116321A1 (de) 2008-05-09 2009-11-11 Irwin Industrial Tools GmbH Bogrwerkzeug, insbesondere Spiralbohrer
DE102008022945A1 (de) 2008-05-09 2009-12-03 Irwin Industrial Tools Gmbh Bohrwerkzeug, insbesondere Spiralbohrer

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707115A1 (de) * 1997-02-22 1998-08-27 Hilti Ag Bohr- und/oder Meisselwerkzeug
DE10009732A1 (de) * 2000-03-02 2001-09-06 Hawera Probst Gmbh Gesteinsbohrer
DE10047332A1 (de) * 2000-09-25 2002-04-11 Hilti Ag Werkzeug mit Wendel
KR20010051858A (ko) * 2000-11-22 2001-06-25 윤광근 파쇄기용 치즐
DE20108179U1 (de) 2001-05-15 2001-07-26 Plica Werkzeugfabrik Ag, Mollis Bohrer
CA2790224C (en) 2002-08-08 2013-07-30 Surgibit Ip Holdings Pty Limited A drill bit and method for producing a drill bit
GB2393681A (en) * 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool
US8146256B2 (en) * 2003-10-31 2012-04-03 Stanley Black & Decker, Inc. Metal demolition shears with indexable, integrated wear plate/piercing tip
DE102004028099A1 (de) * 2004-06-09 2005-12-29 Hilti Ag Bohrer
GB2433905B (en) * 2006-01-06 2009-07-15 Kuldip Singh Kanth Apparatus for use in the installation of a shower enclosure
DE102006000208A1 (de) 2006-04-28 2007-10-31 Hilti Ag Drehschlagbohrer mit viergängigem Bohrwendelschaft
DE102007062539B4 (de) * 2006-12-21 2012-08-23 Stefan Rothenaicher Bohrwerkzeug
DE202006019501U1 (de) * 2006-12-21 2008-04-30 Rothenaicher, Stefan Bohrwerkzeug
DE102006035306A1 (de) 2006-12-22 2008-06-26 Hilti Ag Drehschlagbohrer mit Hartstoffeinsatz
DE102007000486A1 (de) 2007-09-05 2009-03-12 Hilti Aktiengesellschaft Oberflächenbehandlung für Hartstoffe und Werkzeuge mit diesen Hartstoffen
US20090148250A1 (en) * 2007-12-05 2009-06-11 Wayne Chappell Drill Bit
US7861807B2 (en) * 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
CN103433535B (zh) * 2013-08-26 2015-11-04 深圳市金洲精工科技股份有限公司 一种微型钻头
DE102014203327A1 (de) * 2014-02-25 2015-08-27 Robert Bosch Gmbh Bohrwerkzeug
CN104493263A (zh) * 2014-09-28 2015-04-08 上海奥林汽车安全系统有限公司 一种高加工精度的双刃带麻花钻
CN105108211B (zh) * 2015-09-15 2018-06-26 深圳市金洲精工科技股份有限公司 错齿刃钻头
DE102017117664A1 (de) * 2017-08-03 2019-02-07 Drebo Werkzeugfabrik Gmbh Bohrer
US11679442B2 (en) 2018-06-22 2023-06-20 Maestro Logistics, Llc Drill bit and method for making a drill bit
US11948700B2 (en) 2020-11-11 2024-04-02 Grant Charters In-situ method of drilling to collect dry samples from a nuclear reactor core interior for analysis

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US580398A (en) * 1897-04-13 Peter j
US599537A (en) * 1898-02-22 Martin steudner
US750537A (en) * 1904-01-26 Drilling-tool
GB512830A (en) * 1938-03-17 1939-09-27 John Joseph Rawlings Improvements in percussion drills
US2217202A (en) * 1939-10-19 1940-10-08 Rawlplug Company Inc Percussion drill
US2370706A (en) * 1943-11-29 1945-03-06 Rudolf W Andreasson Drill
US2673716A (en) * 1950-09-02 1954-03-30 Clyde E Avery Bit
US3089354A (en) * 1959-10-30 1963-05-14 Spiralbohrer Und Werkzeugfabri Method for the production of cutting tools
CH626557A5 (fi) * 1978-09-28 1981-11-30 Guex Philippe & Fils Sa
US4898503A (en) * 1988-07-05 1990-02-06 Lockheed Corporation Twist drill
US5297456A (en) * 1990-02-07 1994-03-29 Gn Tool Co., Ltd. Cutting tool with twisted edge and manufacturing method thereof
US5265688A (en) * 1990-04-09 1993-11-30 Hilti Aktiengesellschaft Rock drill
DE4011441A1 (de) * 1990-04-09 1991-10-10 Hilti Ag Gesteinsbohrer
SE507842C2 (sv) * 1992-09-24 1998-07-20 Sandvik Ab Borr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116321A1 (de) 2008-05-09 2009-11-11 Irwin Industrial Tools GmbH Bogrwerkzeug, insbesondere Spiralbohrer
DE102008022945A1 (de) 2008-05-09 2009-12-03 Irwin Industrial Tools Gmbh Bohrwerkzeug, insbesondere Spiralbohrer

Also Published As

Publication number Publication date
EP0685629A2 (de) 1995-12-06
DE59510316D1 (de) 2002-09-19
CA2150164A1 (en) 1995-12-05
CA2150164C (en) 2001-02-27
DK0685629T3 (da) 2002-12-02
FI952565A (fi) 1995-12-05
DE4419641A1 (de) 1995-12-07
CN1116683A (zh) 1996-02-14
FI952565A0 (fi) 1995-05-26
PL308889A1 (en) 1995-12-11
AU2039595A (en) 1995-12-14
KR960000438A (ko) 1996-01-25
HUT71760A (en) 1996-01-29
JPH07329049A (ja) 1995-12-19
ATE222321T1 (de) 2002-08-15
FI108622B (fi) 2002-02-28
HU9501624D0 (en) 1995-07-28
HU216598B (hu) 1999-07-28
ES2181759T3 (es) 2003-03-01
EP0685629A3 (de) 1996-12-18
AU690659B2 (en) 1998-04-30
CZ82895A3 (en) 1995-12-13
US5553682A (en) 1996-09-10
TW284718B (fi) 1996-09-01

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