EP0653544B1 - Spiralbohrer - Google Patents
Spiralbohrer Download PDFInfo
- Publication number
- EP0653544B1 EP0653544B1 EP94810518A EP94810518A EP0653544B1 EP 0653544 B1 EP0653544 B1 EP 0653544B1 EP 94810518 A EP94810518 A EP 94810518A EP 94810518 A EP94810518 A EP 94810518A EP 0653544 B1 EP0653544 B1 EP 0653544B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grooves
- shank
- rock drill
- width
- 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.)
- Expired - Lifetime
Links
- 239000011435 rock Substances 0.000 claims description 20
- 238000005553 drilling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 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
- E21B10/44—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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/909—Having peripherally spaced cutting edges
- Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
- Y10T408/9097—Spiral channel
Definitions
- the invention relates to a rock drill with a drill head, a shank and one the insertion end opposite the drill head, the shank at least one has a helical conveyor spiral and the one forming the outer diameter Back of the conveyor spiral is interspersed with grooves.
- the spiral-shaped conveying coils on the shank of well-known rock drills guide Drilled material removed during the drilling process - analogous to a screw conveyor from the Deepest out of the borehole.
- These rock drills are being made in ever smaller, operated from the impact energy more powerful drilling rigs.
- the need for Turning power, which results among other things from the friction between the back of the conveyor helix and the borehole wall has remained essentially constant since one Reduction of the total back width of the conveyor spiral adversely affects the Guidance of the rock drill would impact underground.
- a rock drill is known, the shaft of which is a spiral conveyor has, whose back circumferentially spaced grooves has, which are inclined to the longitudinal axis of the drill.
- This well-known rock drill is a reduction in the broadest sense with the Interacting back surface of the borehole wall can be removed.
- a performance gain which is achieved due to less back friction due to the borehole wall a smaller back surface, is destroyed again by the above Parts of the groove-like profile on the partly rough surface of the borehole wall hang in and thus overall the friction of the rock drill increase this type.
- the invention has for its object to provide a rock drill whose Conveyor helix good guidance of the rock drill in a borehole during the Machining process guaranteed and at the same time less friction on the Borehole wall generated.
- the width of the back is for manufacturing and economic reasons the conveying helix is constant over the entire length of the conveying helix.
- the grooves arranged on the back of this conveyor helix are preferably arranged such that the grooves one behind the other at equal intervals along the central axis of the shaft are arranged.
- a rock drill with a larger diameter has a larger circumference and therefore also conveyor coils with a larger back surface.
- the width of the grooves is therefore also dependent on the outside diameter of the Shaft.
- the ratio between the width of the groove and the diameter of the shank is expediently 0.05: 1 to 0.3: 1.
- the grooves are only called out in this way formed that the bottom of the groove in the radial direction with respect to the back of the conveyor spiral is slightly set back.
- the depth of the groove must definitely be this be trained so that the majority of the particles of the drilling material are larger than the depth the groove. Since the particle size of the drilling material depends on the diameter of the rock drill, the depth of the groove is in a certain ratio to the outer diameter of the shaft, this ratio preferably 0.02: 1 to Is 0.05: 1.
- the width of the groove can be related to the width of the back of the conveyor helix can be designed differently.
- the grooves on the back of the conveyor helix are wider so that less back surface the production helix can come into contact with the borehole wall.
- the editing hard materials require grooves with a smaller width. This is expediently Ratio between the width of the grooves and the width of the back of the conveyor spiral 0.8: 1 to 6: 1.
- the rock drill shown in FIGS. 1 and 2 has a drill head 1, one Shank 2 and an insertion end 3 opposite the drill head 1.
- the shank 2 has, for example, two helical conveying coils 4, 5, the Backs 6, 7 forming the outside diameter of the conveying spirals 4, 5 of grooves 8, 9 are enforced.
- the grooves 8, 9 run in planes that are perpendicular to the longitudinal axis extend the rock drill and are axially offset from each other.
- the face Area of the drill head 2 is a soldered hard metal plate 10, the The outer contour slightly exceeds the outer diameter of the shaft 2.
- Fig. 2 shows an enlarged view of the on the back 6, 7 of the conveyor spiral 4, 5 arranged grooves 8, 9.
- the grooves 8, 9 are at equal intervals A along the Center axis of the shaft 2 arranged one behind the other.
- the width B of the grooves 8, 9 is depending on the width R of the back 6, 7 of the conveyor helix 4, 5.
- the depth T of the Grooves 8, 9 depend on the outer diameter D of the shaft 2.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
- Fig. 1
- einen erfindungsgemässen Gesteinsbohrer in vereinfachter Darstellung;
- Fig. 2
- eine Seitenansicht des vorderen Bereiches des Gesteinsbohrers gemäss Fig. 1 in vergrösserter Darstellung.
Claims (5)
- Gesteinsbohrer mit einem Bohrkopf (1), einem Schaft (2) und einem dem Bohrkopf (1) gegenüberliegenden Einsteckende (3), wobei der Schaft (2) wenigstens eine wendelartig verlaufende Förderwendel (4, 5) aufweist, und der den Aussendurchmesser bildende Rücken (6, 7) der Förderwendel (4, 5) von Nuten (8, 9) durchsetzt ist, dadurch gekennzeichnet, dass die Nuten entlang rechtwinklig zur Mittelachse des Schaftes (2) angeordneten Ebenen verlaufen.
- Gesteinsbohrer nach Anspruch 1, dadurch gekennzeichnet, dass die Nuten (5, 8) in gleichen Abständen entlang der Mittelachse des Schaftes (2) hintereinander angeordnet sind.
- Gesteinsbohrer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verhältnis zwischen der Breite der Nut (B) und dem Aussendurchmesser (D) des Schaftes (2) 0,05:1 bis 0,3:1 beträgt.
- Gesteinsbohrer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Verhältnis zwischen der Tiefe (T) der Nut (8, 9) und dem Aussendurchmesser (D) des Schaftes (2) 0,02:1 bis 0,05:1 beträgt.
- Gesteinsbohrer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Verhältnis zwischen der Breite (B) der Nut (8, 9) und der Breite (R) des Rückeris (6, 7) der Förderwendel (4, 5) 0,8:1 bis 6:1 beträgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4338490 | 1993-11-11 | ||
DE4338490A DE4338490A1 (de) | 1993-11-11 | 1993-11-11 | Spiralbohrer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0653544A2 EP0653544A2 (de) | 1995-05-17 |
EP0653544A3 EP0653544A3 (de) | 1995-11-02 |
EP0653544B1 true EP0653544B1 (de) | 1998-06-17 |
Family
ID=6502330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94810518A Expired - Lifetime EP0653544B1 (de) | 1993-11-11 | 1994-09-07 | Spiralbohrer |
Country Status (6)
Country | Link |
---|---|
US (1) | US5503237A (de) |
EP (1) | EP0653544B1 (de) |
JP (1) | JPH07180464A (de) |
CN (1) | CN1038702C (de) |
DE (2) | DE4338490A1 (de) |
DK (1) | DK0653544T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138871A1 (de) | 2000-03-27 | 2001-10-04 | HILTI Aktiengesellschaft | Wendelbohrer |
DE10053343B4 (de) * | 2000-10-27 | 2009-04-16 | Hilti Aktiengesellschaft | Wendelbohrer |
DE102009038516A1 (de) * | 2009-08-25 | 2011-03-03 | Illinois Tool Works Inc., Glenview | Gesteinsbohrer |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19648868A1 (de) * | 1996-11-26 | 1998-05-28 | Hilti Ag | Bohrwerkzeug mit hohlzylinderförmigem Trägerkörper |
DE29723908U1 (de) * | 1997-12-04 | 1999-05-27 | Hawera Probst GmbH, 88212 Ravensburg | Gesteinsbohrwerkzeug |
DE10142560A1 (de) * | 2001-08-30 | 2003-03-20 | Hilti Ag | Bohrkopf mit einem Schneidelement |
DE102008022945A1 (de) * | 2008-05-09 | 2009-12-03 | Irwin Industrial Tools Gmbh | Bohrwerkzeug, insbesondere Spiralbohrer |
EP2116321B1 (de) * | 2008-05-09 | 2014-01-08 | Irwin Industrial Tool Company | Bohrwerkzeug, insbesondere Spiralbohrer |
DE102009033942A1 (de) * | 2009-07-14 | 2011-01-20 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Bohrer |
DE102010019379A1 (de) * | 2010-05-04 | 2011-11-10 | Illinois Tool Works Inc. | Bohrer, Vorrichtung zur Herstellung und Herstellungsverfahren für einen Bohrer |
DE102012112781A1 (de) | 2012-12-20 | 2014-06-26 | Walter Ag | Spiralbohrer |
US11007583B2 (en) | 2016-02-14 | 2021-05-18 | Hongjia Wang | Twist drill |
JP6699836B2 (ja) * | 2017-06-13 | 2020-05-27 | 住友電工ハードメタル株式会社 | ドリル |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1307525A (en) * | 1919-06-24 | Ice-cutting tool | ||
BE493510A (de) * | ||||
US1740761A (en) * | 1926-06-21 | 1929-12-24 | Berry Francois Jacq Barthelemy | Machine for rock or coal cutting |
US1955768A (en) * | 1932-12-17 | 1934-04-24 | William E Mcdermott | Coal auger bit |
DE803291C (de) * | 1949-01-26 | 1951-04-02 | Victor Products Ltd | Kohle- und Gesteins-Drehbohrer mit Schneckengang |
US3147646A (en) * | 1961-10-19 | 1964-09-08 | Universal American Corp | Special purpose drill |
DE2013327B1 (de) * | 1970-03-20 | 1971-05-13 | Werkzeugbau Gmbh, 8130 Starnberg | Gesteinsbohrer fur Drehschlagbohr maschinen |
US3667857A (en) * | 1970-10-30 | 1972-06-06 | Nat Twist Drill & Tool Co | Combined drill and reamer construction |
CH581520A5 (en) * | 1974-04-08 | 1976-11-15 | Lilette Finanz & Immobilien | Fluted cutting tool with threaded periphery - has stronger incomplete thread at leading edge |
US4285618A (en) * | 1979-10-12 | 1981-08-25 | Shanley Stephen E Jr | Rotary milling cutter |
JPS63283809A (ja) * | 1987-05-12 | 1988-11-21 | G N Tool Kk | ニック付ドリルリ−マ |
DE3919095A1 (de) * | 1988-07-16 | 1990-01-18 | Hawera Probst Kg Hartmetall | Bohrwerkzeug |
US4953642A (en) * | 1989-03-20 | 1990-09-04 | Skaggs Roger D | Rock drill bit |
-
1993
- 1993-11-11 DE DE4338490A patent/DE4338490A1/de not_active Withdrawn
-
1994
- 1994-09-07 EP EP94810518A patent/EP0653544B1/de not_active Expired - Lifetime
- 1994-09-07 DE DE59406265T patent/DE59406265D1/de not_active Expired - Fee Related
- 1994-09-07 DK DK94810518T patent/DK0653544T3/da active
- 1994-11-05 CN CN94118169A patent/CN1038702C/zh not_active Expired - Fee Related
- 1994-11-10 JP JP6276319A patent/JPH07180464A/ja active Pending
- 1994-11-14 US US08/338,065 patent/US5503237A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138871A1 (de) | 2000-03-27 | 2001-10-04 | HILTI Aktiengesellschaft | Wendelbohrer |
DE10053343B4 (de) * | 2000-10-27 | 2009-04-16 | Hilti Aktiengesellschaft | Wendelbohrer |
DE102009038516A1 (de) * | 2009-08-25 | 2011-03-03 | Illinois Tool Works Inc., Glenview | Gesteinsbohrer |
Also Published As
Publication number | Publication date |
---|---|
EP0653544A2 (de) | 1995-05-17 |
EP0653544A3 (de) | 1995-11-02 |
US5503237A (en) | 1996-04-02 |
DE59406265D1 (de) | 1998-07-23 |
JPH07180464A (ja) | 1995-07-18 |
DK0653544T3 (da) | 1999-04-06 |
DE4338490A1 (de) | 1995-05-18 |
CN1038702C (zh) | 1998-06-10 |
CN1107928A (zh) | 1995-09-06 |
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