EP0685629A2 - Trépan de forage de roche - Google Patents

Trépan de forage de roche Download PDF

Info

Publication number
EP0685629A2
EP0685629A2 EP95810187A EP95810187A EP0685629A2 EP 0685629 A2 EP0685629 A2 EP 0685629A2 EP 95810187 A EP95810187 A EP 95810187A EP 95810187 A EP95810187 A EP 95810187A EP 0685629 A2 EP0685629 A2 EP 0685629A2
Authority
EP
European Patent Office
Prior art keywords
discharge grooves
drill
drill head
diametrically opposite
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
EP95810187A
Other languages
German (de)
English (en)
Other versions
EP0685629B1 (fr
EP0685629A3 (fr
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/fr
Publication of EP0685629A3 publication Critical patent/EP0685629A3/fr
Application granted granted Critical
Publication of EP0685629B1 publication Critical patent/EP0685629B1/fr
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, a drill shank having at least four parallel flutes arranged next to one another and a drill head connected to the drill shank and consisting entirely of hard metal with four discharge grooves distributed around the circumference, the clear cross sections of the discharge grooves and flutes coinciding.
  • Rock drill bits of the type in question are used to produce bores in rock, concrete, masonry and the like. It is known that the rock drill bits in the area of the drill bit wear out extremely quickly when drilling in hard ground. For this reason, rock drills are equipped with hard metal, whereby hard metal is understood to mean sintered or melted carbides, silicates, borides or their alloys.
  • Such a rock drill is known from US Pat. No. 2,673,716.
  • This rock drill has a drill head made entirely of hard metal and connected to the drill shank, which has four discharge grooves arranged uniformly around the circumference and running in the longitudinal direction of the drill head.
  • the drill head has a centrally arranged projection which projects into a corresponding recess in the drill shaft.
  • the invention has for its object to provide a rock drill with a hard metal drill head, which is characterized by high drilling performance, long service life, smooth running and good drilling cuttings.
  • this is achieved in that the removal grooves of the drill head have a differently sized, clear cross section.
  • the larger discharge grooves form the main discharge channels and the further discharge grooves, which are made smaller, the secondary discharge channels.
  • the clear cross sections of two first, diametrically opposite discharge grooves are preferably larger than the clear cross sections of two second, diametrically opposite discharge grooves.
  • the clear cross-sections of the discharge grooves of different sizes can be formed by discharge grooves which expediently have a different radial distance from the center of the drill head.
  • the two first, diametrically opposite discharge grooves expediently have a smaller radial extension than the two second, diametrically opposite discharge grooves.
  • the radial extent of the first two removal grooves advantageously corresponds to 0.05 to 0.25 times the outside diameter of the drill head.
  • the radial extent of the two second removal grooves preferably corresponds to 0.1 to 0.35 times the outside diameter of the drill head. Due to the relatively deep discharge grooves, the extension of the discharge grooves in the circumferential direction of the drill head can be kept small and that part of the circumference of the drill head which is supported on the borehole wall can be kept large.
  • Different-sized, clear cross-sections of the discharge grooves can also be achieved in that the two first, diametrically opposite discharge grooves advantageously have a greater extent extending in the circumferential direction of a drill head than the two second, diametrically opposite discharge grooves.
  • Good concentricity is achieved by expediently arranging the two first discharge grooves arranged diametrically opposite one another at an angle of 60 ° to 90 ° with respect to the two second discharge grooves lying diametrically opposite one another. If both of the diametrically opposed discharge grooves are aligned at an angle of approximately 60 °, two particularly large, diametrically opposed discharge grooves can be created, which serve for the good removal of the cuttings and which ensure high drilling progress.
  • the discharge grooves are arranged running in the longitudinal direction of the drill head.
  • the cuttings reach the flutes of the drill shank from the discharge grooves of the drill head, the flutes of the drill shank advantageously being of spiral design.
  • the spiral flutes ensure that the removed cuttings are transported 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 drilling shank 2 with four flutes 4, 5, 6, 7 arranged in parallel next to one another, which are of spiral design, and one connected to the drilling shank 2 as a whole made of hard metal drill head 3 with four evenly distributed discharge grooves 8, 9, 10, 11.
  • the radial distances R1 from the center Z of the drill head 3 of two first, diametrically opposite discharge grooves 8, 10 are smaller than the radial distances R2 of two second, diametrically opposite discharge grooves 9, 11.
  • At least one cutting edge 12 is arranged in the free end region of the drill head 3 of the rock drill shown in FIG. 1, which extends at least partially along the end face over the entire diameter of the drill head 3. This cutting edge 12 is used to remove drilling cuttings, not shown.
  • the drill head 13 shown in FIG. 3 has four discharge grooves 14, 15, 16, 17 which are regularly distributed around the circumference.
  • the clear cross sections of two first, diametrically opposite discharge grooves 14, 16 are larger than the clear cross sections of two second, diametrically opposite discharge 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 discharge grooves 15, 17.
  • the discharge grooves 14, 16 are arranged at an angle W of 90 ° with respect to the discharge grooves 15, 17.
  • the drill head 23 shown in FIG. 4 has four discharge grooves 24, 25, 26, 27 distributed around the circumference, which run in the longitudinal direction of the drill head 23.
  • the discharge grooves 24, 25, 26, 27 have a differently sized, clear cross section. Therefore, the discharge grooves 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 outer diameter of the drill shaft 2.
  • the drill head 3 is connected to the drill shaft 2, for example, by a solder connection.
  • Centering means in the form of projections on the drill head 3, which protrude into correspondingly designed recesses in the drill shank 2, not shown, are used for better centering during the soldering process and the formation of a larger connecting surface.
  • These projections or depressions are arranged in particular in the central area of the rock drill.
  • Such projections 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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Steroid Compounds (AREA)
EP95810187A 1994-06-04 1995-03-20 Trépan de forage de roche Expired - Lifetime EP0685629B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=6519846

Family Applications (1)

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

Country Status (16)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190797A1 (fr) * 2000-09-25 2002-03-27 HILTI Aktiengesellschaft Outil de forage
CN105108211A (zh) * 2015-09-15 2015-12-02 深圳市金洲精工科技股份有限公司 错齿刃钻头
EP3437773A1 (fr) * 2017-08-03 2019-02-06 DreBo Werkzeugfabrik GmbH Foret

Families Citing this family (23)

* 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
KR20010051858A (ko) * 2000-11-22 2001-06-25 윤광근 파쇄기용 치즐
DE20108179U1 (de) 2001-05-15 2001-07-26 Plica Werkzeugfabrik Ag, Mollis Bohrer
AU2003250578B2 (en) 2002-08-08 2009-07-23 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
EP2116321B1 (fr) 2008-05-09 2014-01-08 Irwin Industrial Tool Company Outil de forage, notamment foret hélicoïdal
DE102008022945A1 (de) 2008-05-09 2009-12-03 Irwin Industrial Tools Gmbh Bohrwerkzeug, insbesondere Spiralbohrer
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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512830A (en) * 1938-03-17 1939-09-27 John Joseph Rawlings Improvements in percussion drills
US2370706A (en) * 1943-11-29 1945-03-06 Rudolf W Andreasson Drill
US2673716A (en) * 1950-09-02 1954-03-30 Clyde E Avery Bit
EP0452255B1 (fr) * 1990-04-09 1994-12-14 HILTI Aktiengesellschaft Trépan de roche

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US599537A (en) * 1898-02-22 Martin steudner
US580398A (en) * 1897-04-13 Peter j
US750537A (en) * 1904-01-26 Drilling-tool
US2217202A (en) * 1939-10-19 1940-10-08 Rawlplug Company Inc Percussion drill
US3089354A (en) * 1959-10-30 1963-05-14 Spiralbohrer Und Werkzeugfabri Method for the production of cutting tools
CH626557A5 (fr) * 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
SE507842C2 (sv) * 1992-09-24 1998-07-20 Sandvik Ab Borr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512830A (en) * 1938-03-17 1939-09-27 John Joseph Rawlings Improvements in percussion drills
US2370706A (en) * 1943-11-29 1945-03-06 Rudolf W Andreasson Drill
US2673716A (en) * 1950-09-02 1954-03-30 Clyde E Avery Bit
EP0452255B1 (fr) * 1990-04-09 1994-12-14 HILTI Aktiengesellschaft Trépan de roche

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190797A1 (fr) * 2000-09-25 2002-03-27 HILTI Aktiengesellschaft Outil de forage
CN105108211A (zh) * 2015-09-15 2015-12-02 深圳市金洲精工科技股份有限公司 错齿刃钻头
EP3437773A1 (fr) * 2017-08-03 2019-02-06 DreBo Werkzeugfabrik GmbH Foret

Also Published As

Publication number Publication date
HUT71760A (en) 1996-01-29
CA2150164C (fr) 2001-02-27
ATE222321T1 (de) 2002-08-15
FI108622B (fi) 2002-02-28
FI952565A (fi) 1995-12-05
DK0685629T3 (da) 2002-12-02
EP0685629B1 (fr) 2002-08-14
CZ82895A3 (en) 1995-12-13
CA2150164A1 (fr) 1995-12-05
HU9501624D0 (en) 1995-07-28
AU2039595A (en) 1995-12-14
ES2181759T3 (es) 2003-03-01
EP0685629A3 (fr) 1996-12-18
FI952565A0 (fi) 1995-05-26
TW284718B (fr) 1996-09-01
HU216598B (hu) 1999-07-28
CN1116683A (zh) 1996-02-14
PL308889A1 (en) 1995-12-11
DE59510316D1 (de) 2002-09-19
KR960000438A (ko) 1996-01-25
AU690659B2 (en) 1998-04-30
DE4419641A1 (de) 1995-12-07
JPH07329049A (ja) 1995-12-19
US5553682A (en) 1996-09-10

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