EP0199040B1 - Schlagbohrkrone für Gesteinsbohrmaschinen - Google Patents
Schlagbohrkrone für Gesteinsbohrmaschinen Download PDFInfo
- Publication number
- EP0199040B1 EP0199040B1 EP86103129A EP86103129A EP0199040B1 EP 0199040 B1 EP0199040 B1 EP 0199040B1 EP 86103129 A EP86103129 A EP 86103129A EP 86103129 A EP86103129 A EP 86103129A EP 0199040 B1 EP0199040 B1 EP 0199040B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer drill
- channels
- front surface
- crown bit
- bit
- 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 abstract description 9
- 238000009527 percussion Methods 0.000 title abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 18
- 230000036346 tooth eruption Effects 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 description 21
- 239000007789 gas Substances 0.000 description 6
- 230000007704 transition Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 210000004283 incisor Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method 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
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/003—Drill bits with cutting edges facing in opposite axial directions
-
- 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 percussion drill bit for rock drilling machines, the end face of which is covered with a large number of hard metal pins, several pins being combined to form a group, the groups thus formed being at least circumferentially spaced from one another and being separated from one another by fluid channels, and also as a fluid outlet at least one axial channel opening into the channels is provided, for example in the central region of the end face.
- Such a drill bit is known for example from DE-A-27 33 300.
- two-part drill bit, cutting inserts for example in the form of hard metal pins, are provided in groups, the groups being spaced apart from one another by means of fluid channels which run radially or are slightly curved in the direction of rotation.
- the pins are arranged in a multiple arrangement on an island protruding from the fluid channels, so that larger chunks of cuttings can settle between the pins, which leads to a relatively long drilling time with appropriate propulsion, since these chunks first have to be ground down before they can pass through the fluid channels can be discharged to the outside through the fluid.
- the fluid channels are used for exhaust gas routing and do not support the removal of the cuttings, which removal is only through the Exhaust gas is caused.
- At least one axial channel opening into the fluid channels is provided as the fluid outlet, approximately in the central region of the end face.
- larger chunks of cuttings are caught between the pins and have to be ground down first. Only when these constituents captured between the pins are ground small can they be at least partially transported away via the fluid channels with the support of the exhaust gas routing through central channels.
- the drilling process itself is associated with a relatively large wear of the surfaces lying between the pins, which on the one hand leads to a longer drilling time and on the other hand to faster tool wear.
- the invention has for its object to provide a hammer drill bit of the type described in the on the one hand there is a relatively simple possibility for regrinding, which on the other hand largely prevents larger chunks of cuttings from getting stuck between the pins and promotes the removal of the cuttings.
- the groups each consist only of a series of pins which are arranged on molded webs, and that the webs are rotated by an angle opposite to the direction of rotation of the drill bit relative to the radius of the drill bit intersecting the central axis of the webs .
- the removal of the drill cuttings is supported by the rotary movement of the drill bit, since the drill cuttings also without the exhaust gases, solely by the rotation the drill bit is conveyed radially outwards.
- the webs are curved.
- the fluid channels formed in the end face are designed to widen radially outward from the center of the crown. It is also proposed that the end face be conical.
- the end face is curved.
- channels are formed axially in the transition region between the end face and the shaft, into which the Fluid channels of the end face open.
- the arrangement of axially extending channels in the transition region between the end face and the shaft is known, for example from DE-OS 26 33 779.
- the special arrangement of the channels is particularly advantageous since there is now excellent transport between the channels in the end face and the axially extending channels.
- the axial channels be displaced far into the crown body, partially crossing the front fluid channels and possibly partially crossing the webs.
- the fact that the channels are moved as far as possible radially inward promotes particularly rapid removal of the cuttings.
- the design according to the invention brings a higher performance without greater wear, so that the same drilling depth is achieved in a shorter time with less wear than is possible in the prior art.
- Even the better one Grinding of the pins, in particular by simple means, is advantageous, whereby the arrangement of the pins means that the cut should be provided on the flanks of the pins that lie on the web side edges.
- cut-back teeth pointing axially away from the end face are integrally formed between the axial channels.
- the radially outermost pin of each web is arranged on a crown part formed by a cutting tooth.
- more support material is arranged under the respective outer pin during the advance of the drill bit, so that the latter is not so much at risk of breakage.
- the arrangement of the conically widening axial channels and the cutting teeth reduces the so-called "propeller wear".
- a percussion drill bit is shown, which is provided with a grooved shaft (not shown), so that each is a left-handed embodiment.
- the direction of rotation is indicated by the arrow A in FIGS. 2, 4 and 6.
- the percussion drill bit for rock drilling machines has a large number of hard metal pins 1 in the end face, several pins 1 being combined to form a group of pins. These groups are spaced from each other. They are spatially separated from one another by fluid channels.
- the fluid outlet for the exhaust gases from the drilling machine is approximately in the middle the end face an axial channel 3 opening into the channels 2 is provided.
- the groups referred to above are each formed only from a series of pins 1 which are attached to molded webs 4.
- the webs 4 are arranged inclined to the radius against the direction of rotation A of the drill bit.
- the simplest embodiment is shown in Figures 1 and 2.
- the webs 4 and the fluid channels 2 are both curved, the curvature running counter to the direction of rotation A of the drill bit.
- the fluid channels 2 formed in the end face expand considerably radially outward from the center of the crown.
- the end face of the percussion drill bit is designed in the shape of a truncated cone, whereas the end face in the exemplary embodiments according to FIGS. 3 to 6 is bulged outwards.
- axially extending channels 6 are arranged in the transition area between the end face and shaft 5, into which the fluid channels 2 open.
- the axial channels 6 are shifted as far as possible into the body of the drill bit, partly crossing the front fluid channels 2, but partly also the webs 4 (in particular in the embodiment according to FIGS. 5 + 6).
- cut-back teeth 7 are formed between the axial channels 6 on the outside axially pointing away from the end face.
- the rear incisors 7 are arranged on a crown base 8 tapering laterally and radially inward away from the end face.
- the radially outermost pin of each web 4 is arranged on a crown part formed by a cutting tooth 7.
- Two pins 1 are preferably arranged on each web 4. Depending on the course and arrangement of the webs, it can also be advantageous to arrange three pins 1 or only one pin 1 on a web 4.
- the design according to the invention achieves a high drilling performance with relatively little wear, and a long service life of the drill bit with low energy consumption, since the cuttings leave the bottom of the borehole much coarser.
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)
- Drilling Tools (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Percussive Tools And Related Accessories (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86103129T ATE67557T1 (de) | 1985-03-20 | 1986-03-08 | Schlagbohrkrone fuer gesteinsbohrmaschinen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3510048A DE3510048C1 (de) | 1985-03-20 | 1985-03-20 | Schlagbohrkrone fuer Gesteinsbohrmaschinen |
DE3510048 | 1985-03-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0199040A1 EP0199040A1 (de) | 1986-10-29 |
EP0199040B1 true EP0199040B1 (de) | 1991-09-18 |
Family
ID=6265787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86103129A Expired - Lifetime EP0199040B1 (de) | 1985-03-20 | 1986-03-08 | Schlagbohrkrone für Gesteinsbohrmaschinen |
Country Status (12)
Country | Link |
---|---|
US (1) | US4771834A (ru) |
EP (1) | EP0199040B1 (ru) |
JP (1) | JPS62502269A (ru) |
AT (1) | ATE67557T1 (ru) |
AU (1) | AU584181B2 (ru) |
BR (1) | BR8607086A (ru) |
DE (2) | DE3510048C1 (ru) |
FI (1) | FI874076A (ru) |
NO (1) | NO864383D0 (ru) |
OA (1) | OA08663A (ru) |
SU (1) | SU1560061A3 (ru) |
WO (1) | WO1986005542A1 (ru) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104251121A (zh) * | 2014-09-18 | 2014-12-31 | 武汉地大长江钻头有限公司 | 适用于石油勘探井可形成粗颗粒岩屑的pdc钻头 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4101458A1 (de) * | 1991-01-19 | 1992-07-23 | Wolf Thomas | Fuer einen mit axialem druck und schlaegen arbeitenden, umlaufenden gesteinsbohrer bestimmter bohrmeissel |
US6321862B1 (en) * | 1997-09-08 | 2001-11-27 | Baker Hughes Incorporated | Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
AT409404B (de) * | 1998-02-09 | 2002-08-26 | Knasmillner Rudolf Dipl Ing | Schlagendes richtbohren |
US6253864B1 (en) * | 1998-08-10 | 2001-07-03 | David R. Hall | Percussive shearing drill bit |
US7513319B2 (en) | 2004-06-08 | 2009-04-07 | Devall Donald L | Reamer bit |
US7228922B1 (en) | 2004-06-08 | 2007-06-12 | Devall Donald L | Drill bit |
US20090184564A1 (en) * | 2008-01-22 | 2009-07-23 | The William J. Brady Loving Trust | Pcd percussion drill bit |
US9103170B2 (en) * | 2008-05-16 | 2015-08-11 | Smith International, Inc. | Impregnated drill bit |
JP2012127062A (ja) * | 2010-12-13 | 2012-07-05 | Mitsubishi Materials Corp | 掘削ビット |
RU2535314C1 (ru) * | 2013-07-16 | 2014-12-10 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Буровая коронка |
EP2902583B1 (en) | 2014-01-31 | 2017-04-12 | Sandvik Intellectual Property AB | Percussive rock drill bit with flushing grooves |
JP6606848B2 (ja) * | 2015-04-03 | 2019-11-20 | 三菱マテリアル株式会社 | 掘削工具 |
RU2649210C1 (ru) * | 2017-01-24 | 2018-03-30 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Буровая коронка |
RU2666386C1 (ru) * | 2017-11-09 | 2018-09-07 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Буровая коронка |
JP2022071528A (ja) * | 2020-10-28 | 2022-05-16 | Mmcリョウテック株式会社 | 掘削ビット |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2121202A (en) * | 1935-03-19 | 1938-06-21 | Robert J Killgore | Rotary bit |
US2484365A (en) * | 1947-10-27 | 1949-10-11 | Charles E Seley | Rock drill bit |
US3145789A (en) * | 1962-03-20 | 1964-08-25 | Russell H Lawry | Pilot rock drill |
FR1515221A (fr) * | 1967-01-19 | 1968-03-01 | Forges Et Acieries Du Saut Du | Taillant de mine |
US3521716A (en) * | 1968-10-16 | 1970-07-28 | William F Fisher | Drill point |
US3583504A (en) * | 1969-02-24 | 1971-06-08 | Mission Mfg Co | Gauge cutting bit |
US3951220A (en) * | 1974-08-19 | 1976-04-20 | Vance Industries, Inc. | Archimedes spiral drill bit |
DE2528003A1 (de) * | 1975-06-24 | 1977-01-20 | Krupp Gmbh | Gesteinsbohrer |
US4096917A (en) * | 1975-09-29 | 1978-06-27 | Harris Jesse W | Earth drilling knobby bit |
DE2633779C3 (de) * | 1976-07-28 | 1983-11-03 | Richard 5383 Kierspe Karnebogen | Schlagbohrkrone |
DE2733300C2 (de) * | 1977-07-21 | 1983-01-05 | Western Rock Bit Co. Ltd., Calgary, Alberta | Gesteinsbohrmeißel |
DE2749613B2 (de) * | 1977-11-05 | 1979-12-20 | Fried. Krupp Gmbh, 4300 Essen | Schlagbohrkrone für Gesteinsbohrungen |
US4203496A (en) * | 1978-10-16 | 1980-05-20 | Smith International, Inc. | Longitudinal axis roller drill bit with gage inserts protection |
DE3113109C2 (de) * | 1981-04-01 | 1983-11-17 | Christensen, Inc., 84115 Salt Lake City, Utah | Drehbohrmeißel für Tiefbohrungen |
DE3225050A1 (de) * | 1982-07-05 | 1984-01-05 | Hilti AG, 9494 Schaan | Gesteinsbohrer |
DE3408225A1 (de) * | 1984-03-07 | 1985-09-19 | Richard 5383 Kierspe Karnebogen | Schlagbohrkrone |
DE8406901U1 (de) * | 1984-03-07 | 1984-05-30 | Karnebogen, Richard, 5383 Kierspe | Schlagbohrkrone |
-
1985
- 1985-03-20 DE DE3510048A patent/DE3510048C1/de not_active Expired
-
1986
- 1986-03-08 WO PCT/DE1986/000097 patent/WO1986005542A1/de active Application Filing
- 1986-03-08 BR BR8607086A patent/BR8607086A/pt unknown
- 1986-03-08 JP JP61501581A patent/JPS62502269A/ja active Pending
- 1986-03-08 AT AT86103129T patent/ATE67557T1/de not_active IP Right Cessation
- 1986-03-08 US US07/005,436 patent/US4771834A/en not_active Expired - Fee Related
- 1986-03-08 AU AU55823/86A patent/AU584181B2/en not_active Ceased
- 1986-03-08 DE DE8686103129T patent/DE3681482D1/de not_active Expired - Lifetime
- 1986-03-08 EP EP86103129A patent/EP0199040B1/de not_active Expired - Lifetime
- 1986-11-03 NO NO864383A patent/NO864383D0/no unknown
-
1987
- 1987-09-18 FI FI874076A patent/FI874076A/fi not_active IP Right Cessation
- 1987-09-18 OA OA59197A patent/OA08663A/xx unknown
- 1987-09-18 SU SU874203368A patent/SU1560061A3/ru active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104251121A (zh) * | 2014-09-18 | 2014-12-31 | 武汉地大长江钻头有限公司 | 适用于石油勘探井可形成粗颗粒岩屑的pdc钻头 |
Also Published As
Publication number | Publication date |
---|---|
JPS62502269A (ja) | 1987-09-03 |
DE3510048C1 (de) | 1986-04-10 |
FI874076A0 (fi) | 1987-09-18 |
OA08663A (en) | 1988-11-30 |
AU584181B2 (en) | 1989-05-18 |
AU5582386A (en) | 1986-10-13 |
NO864383L (no) | 1986-11-03 |
DE3681482D1 (de) | 1991-10-24 |
WO1986005542A1 (en) | 1986-09-25 |
ATE67557T1 (de) | 1991-10-15 |
US4771834A (en) | 1988-09-20 |
EP0199040A1 (de) | 1986-10-29 |
FI874076A (fi) | 1987-09-18 |
NO864383D0 (no) | 1986-11-03 |
BR8607086A (pt) | 1988-01-19 |
SU1560061A3 (ru) | 1990-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0199040B1 (de) | Schlagbohrkrone für Gesteinsbohrmaschinen | |
DE913523C (de) | Drehbohrmeissel | |
DE3039632C2 (de) | Drehborhmeißel für Tiefbohrungen | |
EP0778100B1 (de) | Drehschlag-Wendelbohrer | |
DE19857451A1 (de) | Schneid- oder Brechwerkzeug sowie Schneideinsatz für dieses | |
DE19545648A1 (de) | Drehschlag-Wendelbohrer | |
DE2813850A1 (de) | Bohrmeissel fuer erd- und gesteinsbohrungen | |
DE1477708A1 (de) | Spanabhebend arbeitender Drehbohrer | |
DE2856205A1 (de) | Gesteinsbohrer | |
EP0937860A1 (de) | Bohr- und/oder Meisselwerkzeug | |
DE3024852C2 (ru) | ||
DE102005012026A1 (de) | Bohrerspitze mit besonderer Schneidgeometrie | |
DE10351183A1 (de) | Gesteinsbohrer | |
DE19942985A1 (de) | Bohrwerkzeug | |
DE2841679A1 (de) | Auswechselbare bohrkrone fuer einen bei allen gesteinsarten anwendbaren gesteindrehschlagbohrer und bohrhammer | |
DE3624617A1 (de) | Bohrwerkzeug | |
DE3125480A1 (de) | Bohrvorrichtung, insbesondere fuer das herstellen radialer abzweigbohrungen an roehren aus stahl, gusseisen, keramik etc. | |
CH622581A5 (en) | Drill bit for percussive rock-drilling machines | |
DE2717717A1 (de) | Gesteinsbohrkrone | |
DE2035261A1 (de) | Schlagbohrkrone zum Bohren von Gestein u dgl | |
EP0862678A1 (de) | Bohrkrone | |
DE912322C (de) | Schraemmeissel mit Hartmetallplaettchen | |
DE4004814A1 (de) | Bohrer fuer gestein, beton oder als erdbohrer | |
DE3225050A1 (de) | Gesteinsbohrer | |
DE1944551C3 (de) | Gesteinsbohrkrone |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19861129 |
|
17Q | First examination report despatched |
Effective date: 19871015 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19910918 Ref country code: FR Effective date: 19910918 Ref country code: NL Effective date: 19910918 Ref country code: SE Effective date: 19910918 Ref country code: GB Effective date: 19910918 Ref country code: BE Effective date: 19910918 |
|
REF | Corresponds to: |
Ref document number: 67557 Country of ref document: AT Date of ref document: 19911015 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3681482 Country of ref document: DE Date of ref document: 19911024 |
|
EN | Fr: translation not filed | ||
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19920331 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19921201 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19960329 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19960530 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19970308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Effective date: 19970331 Ref country code: LI Effective date: 19970331 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |