EP0226537B1 - Gesteinsbohrer - Google Patents
Gesteinsbohrer Download PDFInfo
- Publication number
- EP0226537B1 EP0226537B1 EP86810551A EP86810551A EP0226537B1 EP 0226537 B1 EP0226537 B1 EP 0226537B1 EP 86810551 A EP86810551 A EP 86810551A EP 86810551 A EP86810551 A EP 86810551A EP 0226537 B1 EP0226537 B1 EP 0226537B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- drill
- pins
- cutting pins
- rock drill
- 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
Links
- 239000011435 rock Substances 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 94
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000005553 drilling Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
Images
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
- E21B10/58—Chisel-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
- E21B10/44—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 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
Definitions
- the invention relates to a rock drill with a shaft and this radially projecting drill head, with an end face pointing in the feed direction.
- Rock drills are used to drill holes in rock, concrete, masonry and the like, which are used to hold fasteners, pass through pipes and cables and to blow up. So far, two different types of rock drill bits with carbide inserts have mainly been known.
- Rock drills known from EP-A-0 048 908, which have one or more cutting plates, are relatively simple to manufacture and are mainly used in small dimensions up to a diameter of approximately 35 mm.
- these drills have the disadvantage that the cutting edges of the cutting plates, particularly in the outer area, wear out quickly and so that the drilling progress decreases quickly. Handling is also impaired by the corner wear.
- the invention has for its object to provide an economically producible rock drill that allows good removal of the drill material and compliance with an accurate drill hole geometry with high mining performance.
- the object is achieved in that the discharge grooves run in the longitudinal direction of the drill head and the end face of the drill head is provided with cutting pins made of hard metal, the free ends of the cutting pins lying in the rotational surface formed by the cutting edges of the cutting plate.
- the cutting insert leads in particular to a good drilling behavior of the rock drill in connection with a subsequent good concentricity, which ensures that a precise drill hole geometry is maintained.
- the additional arrangement of the cutting pins ensures that the cutting plate and cutting pins are supplied to the material to be machined at substantially the same time, and so the cutting edges of the cutting plate are less worn and the drilling progress also slows down.
- the requirement that the free end faces of the cutting pins lie in the rotational surface formed by the cutting edges of the cutting plate serves for this purpose. This ensures that the insert and cutting pins attack the material to be machined at the same time. The wear of the insert and cutting pins is thus kept low, which has a positive effect on the drilling progress.
- At least some of the cutting pins can be arranged parallel to the drill axis. Since the cutting pins are mainly stressed in the direction of the drill axis, such an arrangement of the cutting pins provides good support in the drill head. By arranging the cutting pins parallel to the drill axis, they can also be arranged relatively close to the cutting plate. From the point of view of comminution of the drill material, at least some of the cutting pins can be arranged inclined to the drill axis. For example, in the case of a conical end face of the drilling head, the cutting pins can be arranged approximately perpendicular to the surface of the drilling head, which enables the cutting pins to be embedded to a maximum.
- At least some of the cutting pins are advantageously arranged on different radii.
- a part of the cutting pins expediently projects beyond the circumferential contour of the drill head.
- These cutting pins which protrude beyond the circumferential contour, prevent the drill material from being compressed and jammed between the drill head and the wall of the borehole.
- these cutting pins promote the creation of a high-quality borehole wall and ensure compliance with the exact borehole geometry.
- the free ends of the cutting pins advantageously lie in the rotational surface formed by the cutting edges of the cutting plate.
- the rock drill thus attacks the material to be machined simultaneously by the cutting plate and the cutting pins.
- the wear of the cutting plate and cutting pins is kept low and the drilling progress is only slowed down considerably.
- the hardness of the cutting pins is advantageously matched to that of the cutting plate, so that the cutting plate and the cutting pins are worn approximately uniformly and the engagement conditions are thus maintained.
- the rock drill shown in FIGS. 1 to 3 essentially consists of a shank 1 and an associated drill head, designated overall by 2.
- the shaft 1 is provided with a conveying helix 3, which serves on the one hand to guide the drill in the borehole and on the other hand to remove the cuttings.
- the drill head 2 is provided with discharge grooves 4 running in the longitudinal direction, which serve for the passage of the cuttings from the end face 2a of the drill head 2 pointing in the feed direction to the shank 1.
- the drill head 2 is provided with a centrally arranged cutting plate 5.
- the cutting plate 5 projects beyond the drilling head 2 both in the radial direction and in the feed direction.
- the remaining end face 2a of the drill head 2 is provided with cutting pins 6, 7.
- the cutting pin 6 is arranged such that it runs parallel to the drill axis, while the cutting pin 7 is arranged inclined to the drill axis.
- the cutting pins 6, 7 are inserted so deeply into the drilling head 2 that the free ends of the cutting pins 6, 7 lie in the rotational surface formed by the cutting edges 5a, 5b of the cutting plate 5. This results in uniform wear of the cutting plate 5 and cutting pins 6, 7 during drilling.
- the rock drill shown in FIG. 4 which is somewhat larger in diameter, consists of a shaft 11 and an associated one, which projects beyond the shaft 11 in the radial direction, a total of 12 designated drill heads.
- a separate conveyor helix 13 is arranged on the shaft 11.
- the drill head 12 is provided with a centrally arranged cutting plate 15 on its end face 12a directed in the feed direction.
- the rotating surface of the cutting plate 15 which arises when the rock drill is rotated is shown in dash-dotted lines.
- the drill head 12 is also equipped with cutting pins 16, 17, 18, 19 on the end face 12a and on the circumference.
- the cutting pins 17, 19 are arranged inclined to the drill axis.
- the cutting pin 16, however, is arranged parallel to the drill axis.
- the cutting pin 18 is arranged perpendicular to the drill axis and projects beyond the circumferential contour of the drill head 12.
- the cutting pin 18 is in contact with the borehole wall during drilling and can be used, for example, to roughen it during the drilling process.
- the cutting pins 16, 17, 18, 19 are arranged on different radii. This results in a good size reduction of the drilling material and an even distribution of the forces on the individual cutting pins. In this rock drill, too, the cutting pins 16, 17, 18, 19 are inserted so deeply into the drilling head 12 that their free end face lies in the rotational surface formed by the cutting edges of the cutting plate 15.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electrotherapy Devices (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Steroid Compounds (AREA)
- Drilling Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3544433 | 1985-12-16 | ||
DE3544433A DE3544433C2 (de) | 1985-12-16 | 1985-12-16 | Gesteinsbohrer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0226537A2 EP0226537A2 (de) | 1987-06-24 |
EP0226537A3 EP0226537A3 (en) | 1988-11-23 |
EP0226537B1 true EP0226537B1 (de) | 1994-06-08 |
Family
ID=6288555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86810551A Expired - Lifetime EP0226537B1 (de) | 1985-12-16 | 1986-12-01 | Gesteinsbohrer |
Country Status (10)
Country | Link |
---|---|
US (1) | US4765419A (fi) |
EP (1) | EP0226537B1 (fi) |
JP (2) | JPS62141293A (fi) |
AT (1) | ATE106985T1 (fi) |
AU (1) | AU587514B2 (fi) |
CA (1) | CA1266651A (fi) |
DE (2) | DE3544433C2 (fi) |
DK (1) | DK173050B1 (fi) |
ES (1) | ES2056047T3 (fi) |
FI (1) | FI81295C (fi) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1324013C (en) * | 1987-02-09 | 1993-11-09 | Vermont American Corporation | Masonary drill tip with strong and chamfered cutting edges |
DE3707798A1 (de) * | 1987-03-11 | 1988-09-22 | Hawera Probst Kg Hartmetall | Gesteinsbohrer |
US4883135A (en) * | 1987-09-18 | 1989-11-28 | Hawera Probst Gmbh & Co. | Apparatus for rock drill |
DE3875710D1 (de) * | 1987-12-01 | 1992-12-10 | Hawera Probst Kg Hartmetall | Gesteinsbohrer. |
DE3742661A1 (de) * | 1987-12-16 | 1989-07-13 | Hawera Probst Kg Hartmetall | Gesteinsbohrer |
AU612270B2 (en) * | 1988-05-23 | 1991-07-04 | Krasnoyarsky Filial Vsesojuznogo Nauchno-Proizvodstvennogo Obiedinenia Stroitelnykh I Dorozhnykh Mashin | Percussion rotary drilling tool |
US5004056A (en) * | 1988-05-23 | 1991-04-02 | Goikhman Yakov A | Percussion-rotary drilling tool |
DE3820695C2 (de) * | 1988-06-18 | 1996-07-25 | Hawera Probst Kg Hartmetall | Gesteinsbohrer |
DE3825107C2 (de) * | 1988-07-23 | 1996-07-11 | Hilti Ag | Gesteinsbohrer mit Schneidplatte |
JP2784830B2 (ja) * | 1989-09-04 | 1998-08-06 | ソニー株式会社 | ヘッドフォン |
JPH0810517Y2 (ja) * | 1989-10-25 | 1996-03-29 | 新日本製鐵株式会社 | 穿孔ビット |
JPH0746469Y2 (ja) * | 1989-10-25 | 1995-10-25 | 新日本製鐵株式会社 | 穿孔ビット |
DE4032066C2 (de) * | 1990-10-05 | 1999-04-15 | Siegfried Treitz | Anordnung und Befestigung von stiftförmigen Schneideinsätzen in Gesteinsbohrkronen |
DE4101458A1 (de) * | 1991-01-19 | 1992-07-23 | Wolf Thomas | Fuer einen mit axialem druck und schlaegen arbeitenden, umlaufenden gesteinsbohrer bestimmter bohrmeissel |
TW299385B (en) | 1994-12-12 | 1997-03-01 | Black & Decker Inc | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US5575342A (en) * | 1995-05-26 | 1996-11-19 | Sandvik Ab | Percussion drill bit, an insert for use therein and a method of drilling a bore |
US5641028A (en) * | 1995-08-10 | 1997-06-24 | Black & Decker Inc. | Drill bit with debris conveying flute |
DE19537900B4 (de) * | 1995-10-11 | 2005-11-03 | Irwin Industrial Tool Company (N.D.Ges.D. Staates Delaware), Freeport | Drehbohrer |
DE19545646A1 (de) * | 1995-12-07 | 1997-06-12 | Hilti Ag | Drehschlag-Wendelbohrer |
DE19545647A1 (de) * | 1995-12-07 | 1997-06-12 | Hilti Ag | Drehschlag-Wendelbohrer |
US5732784A (en) * | 1996-07-25 | 1998-03-31 | Nelson; Jack R. | Cutting means for drag drill bits |
US6044919A (en) * | 1997-07-31 | 2000-04-04 | Briese Industrial Technologies, Inc. | Rotary spade drill arrangement |
US6039127A (en) * | 1998-03-13 | 2000-03-21 | Loudon Enterprises, Inc. | Rock drill |
EP0943780A3 (de) * | 1998-03-18 | 2000-07-19 | Plica Werkzeugfabrik Ag | Bohrwerkzeug |
US20020164218A1 (en) * | 2001-02-28 | 2002-11-07 | Ruben Aguirre | Fluted drill tool with frustum cutters |
DE10351183A1 (de) * | 2003-11-03 | 2005-06-02 | Illinois Tool Works Inc., Glenview | Gesteinsbohrer |
US7571780B2 (en) | 2006-03-24 | 2009-08-11 | Hall David R | Jack element for a drill bit |
US8360174B2 (en) | 2006-03-23 | 2013-01-29 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US8522897B2 (en) | 2005-11-21 | 2013-09-03 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
ES2308627T3 (es) * | 2006-04-26 | 2008-12-01 | Bauer Maschinen Gmbh | Punta de perforacion. |
US8590644B2 (en) | 2006-08-11 | 2013-11-26 | Schlumberger Technology Corporation | Downhole drill bit |
US8292372B2 (en) | 2007-12-21 | 2012-10-23 | Hall David R | Retention for holder shank |
US8714285B2 (en) | 2006-08-11 | 2014-05-06 | Schlumberger Technology Corporation | Method for drilling with a fixed bladed bit |
US8567532B2 (en) | 2006-08-11 | 2013-10-29 | Schlumberger Technology Corporation | Cutting element attached to downhole fixed bladed bit at a positive rake angle |
US9051795B2 (en) | 2006-08-11 | 2015-06-09 | Schlumberger Technology Corporation | Downhole drill bit |
US8622155B2 (en) | 2006-08-11 | 2014-01-07 | Schlumberger Technology Corporation | Pointed diamond working ends on a shear bit |
US7637574B2 (en) * | 2006-08-11 | 2009-12-29 | Hall David R | Pick assembly |
US9145742B2 (en) * | 2006-08-11 | 2015-09-29 | Schlumberger Technology Corporation | Pointed working ends on a drill bit |
US8616305B2 (en) * | 2006-08-11 | 2013-12-31 | Schlumberger Technology Corporation | Fixed bladed bit that shifts weight between an indenter and cutting elements |
US8960337B2 (en) | 2006-10-26 | 2015-02-24 | Schlumberger Technology Corporation | High impact resistant tool with an apex width between a first and second transitions |
JP4890515B2 (ja) * | 2008-08-08 | 2012-03-07 | ウエタックス株式会社 | スピーカ |
JP4662508B1 (ja) * | 2010-03-01 | 2011-03-30 | 株式会社オーディオテクニカ | イヤホン |
EP2811757B1 (en) | 2012-01-30 | 2016-05-25 | Panasonic Intellectual Property Management Co., Ltd. | Earphone |
US9712905B2 (en) | 2012-06-20 | 2017-07-18 | Apple Inc. | Headsets with non-occluding earbuds |
US8971561B2 (en) | 2012-06-20 | 2015-03-03 | Apple Inc. | Earphone having a controlled acoustic leak port |
US8976994B2 (en) | 2012-06-20 | 2015-03-10 | Apple Inc. | Earphone having an acoustic tuning mechanism |
US9258663B2 (en) | 2012-09-07 | 2016-02-09 | Apple Inc. | Systems and methods for assembling non-occluding earbuds |
JP6459974B2 (ja) | 2013-11-19 | 2019-01-30 | ソニー株式会社 | ヘッドホン及び音響特性調整方法 |
KR101938287B1 (ko) | 2016-01-29 | 2019-01-14 | 노벨 바이오케어 서비시스 아게 | 치과용 도구 |
GB201706687D0 (en) * | 2017-04-27 | 2017-06-14 | Rolls Royce Plc | A cutting tool |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1056132A (en) * | 1911-05-05 | 1913-03-18 | Nikolaus Staub | Rock-drill. |
FR1006219A (fr) * | 1947-12-05 | 1952-04-21 | Taillant de mine à plaquette extra-dure | |
CH311119A (fr) * | 1953-09-02 | 1955-11-30 | Dionisotti Joseph | Fleuret pour la perforation de roches. |
US3163246A (en) * | 1963-04-18 | 1964-12-29 | Westinghouse Air Brake Co | Rock drill bit |
US3283837A (en) * | 1965-02-01 | 1966-11-08 | Acme Fishing Tool Company | Drill bit |
US3589456A (en) * | 1969-08-25 | 1971-06-29 | Acme Fishing Tool Co | Drill bit |
SU636384A1 (ru) * | 1974-02-06 | 1978-12-05 | Институт Горного Дела Со Ан Ссср | Коронка дл ударно-вращательного бурени |
DE2510265A1 (de) * | 1975-03-08 | 1976-09-16 | Richard Karnebogen | Bohrkrone fuer schlagende gesteinsbohrmaschinen |
DE2528003A1 (de) * | 1975-06-24 | 1977-01-20 | Krupp Gmbh | Gesteinsbohrer |
DE2542001A1 (de) * | 1975-09-20 | 1977-03-24 | Bosch Gmbh Robert | Gesteinsbohrer |
DE2601302A1 (de) * | 1976-01-15 | 1977-07-21 | Richard Karnebogen | Bohrkrone fuer schlagende gesteinsbohrvorrichtungen |
JPS6014B2 (ja) * | 1977-09-05 | 1985-01-05 | 日東化学工業株式会社 | 細砕肉からの水溶性蛋白質等の除去法 |
DE2856205A1 (de) * | 1978-12-27 | 1980-07-10 | Hilti Ag | Gesteinsbohrer |
DE3004077C2 (de) * | 1980-02-05 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrkrone |
DE8025800U1 (de) * | 1980-09-26 | 1981-02-05 | Hawera Probst Gmbh + Co, 7980 Ravensburg | Bohrer |
DE3044775A1 (de) * | 1980-11-27 | 1982-07-08 | Hilti AG, 9494 Schaan | Gesteinsbohrer |
AU1111183A (en) * | 1982-02-03 | 1983-08-11 | Witzand, H.H.G. | Drill bit |
-
1985
- 1985-12-16 DE DE3544433A patent/DE3544433C2/de not_active Expired - Fee Related
-
1986
- 1986-12-01 DE DE3689900T patent/DE3689900D1/de not_active Expired - Lifetime
- 1986-12-01 EP EP86810551A patent/EP0226537B1/de not_active Expired - Lifetime
- 1986-12-01 AT AT86810551T patent/ATE106985T1/de not_active IP Right Cessation
- 1986-12-01 ES ES86810551T patent/ES2056047T3/es not_active Expired - Lifetime
- 1986-12-12 AU AU66475/86A patent/AU587514B2/en not_active Ceased
- 1986-12-12 FI FI865068A patent/FI81295C/fi not_active IP Right Cessation
- 1986-12-15 DK DK198606035A patent/DK173050B1/da not_active IP Right Cessation
- 1986-12-16 US US06/942,541 patent/US4765419A/en not_active Expired - Lifetime
- 1986-12-16 CA CA000525421A patent/CA1266651A/en not_active Expired - Fee Related
- 1986-12-16 JP JP61297813A patent/JPS62141293A/ja active Pending
-
1994
- 1994-07-12 JP JP1994008347U patent/JPH086865Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU587514B2 (en) | 1989-08-17 |
US4765419A (en) | 1988-08-23 |
DK603586D0 (da) | 1986-12-15 |
DK173050B1 (da) | 1999-12-06 |
DE3544433A1 (de) | 1987-06-19 |
JPS62141293A (ja) | 1987-06-24 |
ES2056047T3 (es) | 1994-10-01 |
CA1266651A (en) | 1990-03-13 |
AU6647586A (en) | 1987-06-18 |
JPH0720386U (ja) | 1995-04-11 |
DK603586A (da) | 1987-06-17 |
DE3689900D1 (de) | 1994-07-14 |
FI81295B (fi) | 1990-06-29 |
JPH086865Y2 (ja) | 1996-02-28 |
EP0226537A2 (de) | 1987-06-24 |
FI865068A (fi) | 1987-06-17 |
DE3544433C2 (de) | 1995-12-14 |
FI81295C (fi) | 1990-10-10 |
ATE106985T1 (de) | 1994-06-15 |
FI865068A0 (fi) | 1986-12-12 |
EP0226537A3 (en) | 1988-11-23 |
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