EP0169402A2 - Trépan de roche - Google Patents
Trépan de roche Download PDFInfo
- Publication number
- EP0169402A2 EP0169402A2 EP85107961A EP85107961A EP0169402A2 EP 0169402 A2 EP0169402 A2 EP 0169402A2 EP 85107961 A EP85107961 A EP 85107961A EP 85107961 A EP85107961 A EP 85107961A EP 0169402 A2 EP0169402 A2 EP 0169402A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- rock drill
- cutting body
- wings
- groove
- 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
Links
- 239000011435 rock Substances 0.000 title claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 57
- 238000005476 soldering Methods 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000035515 penetration Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000003801 milling Methods 0.000 description 4
- 238000005219 brazing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003313 weakening effect Effects 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
- E21B10/36—Percussion drill bits
- E21B10/40—Percussion drill bits with leading portion
-
- 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
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
Definitions
- the invention relates to a rock drill with radial recess grooves for receiving cutting bodies to be soldered in, and in particular to a rock drill for breakthroughs with a drill head body arranged at the end of a drill shank, the at least two radially projecting vanes provided with cutting bodies, and a centering lug with cutting bodies arranged axially in front of the wings in the direction of drilling having.
- the cutting bodies made of hard metal are soldered into the cutting body receiving grooves of the steel drill head using the brazing method.
- the depth of the cutting body receiving groove was dimensioned such that the cutting body sits on the base of the groove during the soldering process in order to obtain a precisely defined position.
- the invention has for its object to eliminate the aforementioned disadvantages, d. H. to create a tension-free fit of hard metal cutting bodies in rock drills and in this context to simplify the manufacturing process, in particular of rock drills for producing breakthroughs, and thus to make them more cost-effective.
- the installation of a hard metal cutting body according to the invention without a lower support has a favorable effect on the stress state in the drill head.
- the reason for this can be seen in the following.
- the Ve and the thermal expansion is approx. 2: 1.
- the same lengths of hard metal and steel are available before the soldering process. When heated to the soldering temperature, the steel expands much more than the hard metal.
- the connection cools down to the solidification temperature of the solder, the length of the steel is still much larger than that of the hard metal body. Further cooling to room temperature then - similar to a bimetal - causes the compound to bend.
- the hard metal cutting body can at least partially follow the steel shrinkage, so that the stresses both in the steel and in the hard metal cutting body are considerably reduced and in particular are not exactly present in the slot base.
- This area is in any case very vulnerable as a breaking point due to voltage peaks.
- the invention therefore has the further advantage that in a rock drill with two blades, all the grooves for receiving cutting bodies are produced with only one operation.
- the groove is made axially so deep through the centering projection with a disk milling cutter that it simultaneously engages in the wings of the drill head body. The result is a continuous radial groove, which cuts through both the centering shoulder in its full axial length and the wings to the intended depth for the cutting body.
- the continuous groove according to the invention for the formation of the insert seat in the wing also advantageously enables the cutting bodies to be optimally soldered into the wing. This is caused by the fact that due to the available space on both sides of the respective cutting element, correct metering and feeding of the solder is made possible.
- the principle according to the invention can be applied to a one-piece rock drill both with two and with a larger number of blades, provided that these are arranged diametrically to one another. According to the invention, the simplified production possibility of one-piece rock drills and thus the more economical production of such breakthrough tools is decisive.
- a plurality of cutting bodies can be arranged radially next to one another in a groove in order to increase the cutting performance if necessary. For this it is not necessary that new grooves or slots or bores are made in the wing by means of complex manufacturing processes.
- a plurality of radial grooves can be arranged at a certain angle to one another in one finger. This can also increase the cutting performance for special applications.
- the rock drill 10 shown in FIGS. 1 and 2 can be both a normal twist drill and the centering tip or centering shoulder 16 of a rock drill as shown in FIGS. 3 and 4.
- the largely tension-free seat of the cutting body cutting element 23 made of hard metal in the cutting body receiving groove 17 is decisive.
- the depth t of the cutting body receiving groove 17 or insertion groove 17 to be introduced by means of a disc cutter is greater than the penetration depth t 2 of the hard metal cutting body 23.
- the free space t 4 between the cutting body and the groove base should be at least 0.5 x the slot width or cutting body width b.
- the width b of the slot or the groove 17 is constant.
- soldering surface in connection with the shear strength of the solder can absorb the load on the cutting plate.
- the following calculation can be made for a drill with a nominal diameter of 25: Soldering area approx. 430 mm 2 Shear strength of the solder: approx. 150 to 300 N / mm2. This results in the following resilience: Minimum: 430. 150 64,500 N ( ⁇ 6.45 t)
- the loads that occur in practice are in the range of approx. 2 to 4 tons.
- the rock drill 10 'shown in a side view in FIG. 3 consists of a drill head body 11 which is molded onto the cylindrical shaft 12 of a breakthrough tool.
- the drill head body 11 consists of two radial sections designated as vanes 13, 14, which are designed in a manner known per se. With respect to the axis plane 15, the wings 13, 14 are symmetrical.
- a continuous cutting body receiving groove 17 ' is produced, for example, by means of a disk milling cutter, which extends in alignment from the outermost radial point of the wing 13 via the centering projection 16 to the outermost radial point of the wing 14.
- the lower edge 18 'of the receiving groove 17' which can be seen in plan view in FIG. 4 is indicated by dashed lines.
- the cutting bodies 19, 20 in the wing 13 or 21, 22 in the wing 14 and the cutting body 23 of the centering projection 16, which is offset in the axial direction, are then soldered into this continuous cutting body receiving groove 17 ′, which can be produced in one operation, in the known brazing process. It is important from a manufacturing point of view that the cutting bodies 19 to 22 are easily accessible from the side so that the dosage of the solder and the soldering process can be optimally designed.
- the cutting body 23 of the centering projection 16 is not limited at the bottom by the continuous groove 17 ′′ according to the invention, so that lower voltage peaks occur during soldering than with firm clamping.
- the cutting-body receiving groove 17 ' is offset by an angle ⁇ 18 ° with respect to the plane of symmetry 24 by the wings 13, 14 is executed.
- this ensures early engagement of the cutting bodies 19 to 22 in the material to be drilled and increased support of the cutting bodies by the drill head body 11.
- the radius R shown in Fig. 2 is approximately 32 mm.
- the groove depth t 2 in the wings 13, 14 is approximately 4.5 mm, the groove width b is also approximately 4.5 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3426977 | 1984-07-21 | ||
DE19843426977 DE3426977A1 (de) | 1984-07-21 | 1984-07-21 | Gesteinsbohrer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0169402A2 true EP0169402A2 (fr) | 1986-01-29 |
EP0169402A3 EP0169402A3 (en) | 1986-12-10 |
EP0169402B1 EP0169402B1 (fr) | 1989-05-03 |
Family
ID=6241251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85107961A Expired EP0169402B1 (fr) | 1984-07-21 | 1985-06-27 | Trépan de roche |
Country Status (3)
Country | Link |
---|---|
US (1) | US4729441A (fr) |
EP (1) | EP0169402B1 (fr) |
DE (2) | DE3426977A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US6174111B1 (en) | 1994-12-12 | 2001-01-16 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3742661A1 (de) * | 1987-12-16 | 1989-07-13 | Hawera Probst Kg Hartmetall | Gesteinsbohrer |
DE3820697A1 (de) * | 1988-06-18 | 1989-12-21 | Hawera Probst Kg Hartmetall | Bohrwerkzeug |
DE4114271A1 (de) * | 1991-05-02 | 1992-11-05 | Hilti Ag | Bohr- und meisselwerkzeug mit grundkoerper und schneidkoerper |
GB2303809A (en) * | 1995-07-29 | 1997-03-05 | Black & Decker Inc | Roll-forged drill bit |
GB2303810A (en) * | 1995-07-29 | 1997-03-05 | Black & Decker Inc | Masonry drill bit |
US5732784A (en) * | 1996-07-25 | 1998-03-31 | Nelson; Jack R. | Cutting means for drag drill bits |
US5769986A (en) * | 1996-08-13 | 1998-06-23 | Northrop Grumman Corporation | Stress-free bonding of dissimilar materials |
US6026918A (en) * | 1997-10-10 | 2000-02-22 | Briese Industrial Technologies, Inc. | Roof bolt bit |
US6039127A (en) * | 1998-03-13 | 2000-03-21 | Loudon Enterprises, Inc. | Rock drill |
DE19923792A1 (de) * | 1999-05-25 | 2000-11-30 | Hawera Probst Gmbh | Bohrwerkzeug |
US6374931B1 (en) * | 1999-11-03 | 2002-04-23 | Relton Corporation | Multiple cutter rotary hammer bit |
DE10117262A1 (de) * | 2001-01-17 | 2002-07-18 | Hilti Ag | Gesteinsbohrer |
FR2832944B1 (fr) * | 2001-12-05 | 2004-01-16 | Commissariat Energie Atomique | Procede d'assemblage de deux pieces ayant des cotes precises et application au brasage d'un accelerateur linac rfq |
DE10306645B3 (de) * | 2003-02-18 | 2004-04-08 | Hilti Ag | Schlagdrehbohrer mit Hartstoffschneiden |
US7228922B1 (en) | 2004-06-08 | 2007-06-12 | Devall Donald L | Drill bit |
US7513319B2 (en) | 2004-06-08 | 2009-04-07 | Devall Donald L | Reamer bit |
US8522897B2 (en) * | 2005-11-21 | 2013-09-03 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US8360174B2 (en) | 2006-03-23 | 2013-01-29 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US7571780B2 (en) * | 2006-03-24 | 2009-08-11 | Hall David R | Jack element for a drill bit |
US7637574B2 (en) | 2006-08-11 | 2009-12-29 | Hall David R | Pick assembly |
US8616305B2 (en) * | 2006-08-11 | 2013-12-31 | Schlumberger Technology Corporation | Fixed bladed bit that shifts weight between an indenter and cutting elements |
US8714285B2 (en) * | 2006-08-11 | 2014-05-06 | Schlumberger Technology Corporation | Method for drilling with a fixed bladed bit |
US9145742B2 (en) | 2006-08-11 | 2015-09-29 | Schlumberger Technology Corporation | Pointed working ends on a drill bit |
US9051795B2 (en) | 2006-08-11 | 2015-06-09 | Schlumberger Technology Corporation | Downhole drill 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 |
US8622155B2 (en) * | 2006-08-11 | 2014-01-07 | Schlumberger Technology Corporation | Pointed diamond working ends on a shear bit |
US8292372B2 (en) * | 2007-12-21 | 2012-10-23 | Hall David R | Retention for holder shank |
US8590644B2 (en) * | 2006-08-11 | 2013-11-26 | Schlumberger Technology Corporation | Downhole drill bit |
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 |
EP2669033B1 (fr) | 2012-05-29 | 2015-11-04 | Black & Decker Inc. | Tête de coupe pour un foret. |
US10507534B2 (en) | 2016-03-17 | 2019-12-17 | O-Tags, Inc. | Systems, methods, and apparatus for reliably installing survey tags |
CN115506731A (zh) * | 2022-11-10 | 2022-12-23 | 湖南五新隧道智能装备股份有限公司 | 一种凿岩机快速换杆装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2030576A (en) * | 1932-07-28 | 1936-02-11 | Erickson Charles | Replaceable bit rock drill |
DE630138C (de) * | 1936-05-20 | Wallramit Handel Mij Nv | Gesteinsschlagbohrer mit Hartmetalleinsatz | |
GB692373A (en) * | 1950-08-08 | 1953-06-03 | Joseph Dionisotti | Improvements in or relating to drill bits for boring rock or like materials |
FR1414023A (fr) * | 1964-09-03 | 1965-10-15 | Forges & Ateliers Du Saut Du T | Outil constitué par un support et des plaquettes rapportées maintenues élastiquement dans ledit support |
US3459073A (en) * | 1967-06-12 | 1969-08-05 | Timken Roller Bearing Co | Rock bit assembly and bit insert assembly process |
DE2414354A1 (de) * | 1974-03-26 | 1975-10-16 | Heller Geb | Gesteinsbohrer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE175859C (fr) * | ||||
US2101376A (en) * | 1934-10-09 | 1937-12-07 | Wallramit Handel Mij Nv | Percussive boring tool |
US2341314A (en) * | 1941-03-07 | 1944-02-08 | Vascoloy Ramet Corp | Tipped cutting tool |
US2522045A (en) * | 1948-05-21 | 1950-09-12 | Silas A Knowles | Bit for rock drilling |
US2777672A (en) * | 1949-03-26 | 1957-01-15 | Sandvikens Jernverke Aktiebola | Percussion drilling bit |
US2707619A (en) * | 1950-06-22 | 1955-05-03 | Sandvikens Jernverks Ab | Percussion drills |
DE1101095B (de) * | 1957-05-31 | 1961-03-02 | Siemens Ag | Werkzeug zur spanabhebenden Bearbeitung von Metallen |
US3549337A (en) * | 1968-03-05 | 1970-12-22 | Du Pont | Method of securing dense,metal-bonded refractory nitride bodies to steel |
ZA77339B (en) * | 1977-01-20 | 1978-04-26 | Boart Int Ltd | Brazing inserts |
AT376765B (de) * | 1978-05-16 | 1984-12-27 | Guergen Karlheinz | Auswechselbare bohrkrone fuer einen bei allen gesteinsarten anwendbaren gesteindrehschlagbohrer und bohrhammer |
DE2952295A1 (de) * | 1979-12-24 | 1981-07-02 | Beck, Dieter, 2110 Buchholz | Bohrkrone eines gesteinsbohrwerkzeuges |
-
1984
- 1984-07-21 DE DE19843426977 patent/DE3426977A1/de not_active Withdrawn
-
1985
- 1985-06-27 DE DE8585107961T patent/DE3569957D1/de not_active Expired
- 1985-06-27 EP EP85107961A patent/EP0169402B1/fr not_active Expired
- 1985-07-10 US US06/753,629 patent/US4729441A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE630138C (de) * | 1936-05-20 | Wallramit Handel Mij Nv | Gesteinsschlagbohrer mit Hartmetalleinsatz | |
US2030576A (en) * | 1932-07-28 | 1936-02-11 | Erickson Charles | Replaceable bit rock drill |
GB692373A (en) * | 1950-08-08 | 1953-06-03 | Joseph Dionisotti | Improvements in or relating to drill bits for boring rock or like materials |
FR1414023A (fr) * | 1964-09-03 | 1965-10-15 | Forges & Ateliers Du Saut Du T | Outil constitué par un support et des plaquettes rapportées maintenues élastiquement dans ledit support |
US3459073A (en) * | 1967-06-12 | 1969-08-05 | Timken Roller Bearing Co | Rock bit assembly and bit insert assembly process |
DE2414354A1 (de) * | 1974-03-26 | 1975-10-16 | Heller Geb | Gesteinsbohrer |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US6174111B1 (en) | 1994-12-12 | 2001-01-16 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
Also Published As
Publication number | Publication date |
---|---|
EP0169402B1 (fr) | 1989-05-03 |
EP0169402A3 (en) | 1986-12-10 |
DE3569957D1 (en) | 1989-06-08 |
US4729441A (en) | 1988-03-08 |
DE3426977A1 (de) | 1986-01-30 |
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