EP1015727B1 - Bohrwerkzeug - Google Patents
Bohrwerkzeug Download PDFInfo
- Publication number
- EP1015727B1 EP1015727B1 EP98933556A EP98933556A EP1015727B1 EP 1015727 B1 EP1015727 B1 EP 1015727B1 EP 98933556 A EP98933556 A EP 98933556A EP 98933556 A EP98933556 A EP 98933556A EP 1015727 B1 EP1015727 B1 EP 1015727B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shank
- drill
- helical
- profiled rod
- fixing
- 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
- 238000005553 drilling Methods 0.000 title description 24
- 239000011435 rock Substances 0.000 claims description 19
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010410 dusting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 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
-
- 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 drilling tool, in particular a Rock drill according to the preamble of claim 1.
- Drilling tools and in particular rock drills exist in generally one with a hard metal insert equipped drill head, from a spiral shank with spiral Conveying spiral for drilling dust or cuttings and from one Clamping shank for inserting the drilling tool into a Prime mover.
- the spiral spiral of a rock drill is in the general cutting, possibly also non-cutting (e.g. roller) made to feed the conveyor spiral grooves into the general cylindrical feed material.
- the main task of the rock drill has the main task material loosened by the hard metal cutting edge, d. H. the Drilling dust or cuttings to be extracted from the borehole.
- Such cylindrical starting materials are in diverse dimensions available, so that a tight Gradation of drill diameters can be produced.
- the invention has for its object a drilling tool and in particular to create a rock drill opposite improved conventional drilling tools Has handling properties with at least one drilling performance equal to these drilling tools.
- the invention is based on the finding that an increased Drilling performance by reducing friction losses as well an increase in the delivery rate can be achieved that the cross section of the starting material for the conveyor spiral not circular, but by a preferably symmetrical one Polygon profile is replaced.
- You cut into one Polygonal profile a conveyor helix, so sit down remaining back webs together from lined up Surface sections, which in turn additional pockets for the Form drilling dust transport.
- This makes one clear reduced wall friction because the back bridge of the conveyor spiral no surface contact, but at most a line contact having.
- it turns out by the alternating following Longitudinal edges of the surface sections on the back webs of the Conveying spiral a kind of scraper effect, which also leads to a positive drilling result.
- the clamping shank as a polygonal polygonal profile trained, d. H.
- the complete drilling tool consists of the same polygonal profile, in which conveyor spiral grooves are machined. Thanks to the polygonal clamping shank will be especially when included in a commercially available three-jaw chuck of an impact drill or the like accomplished a positive entrainment, so that a spinning of the drilling tool, especially at Jaw chucks with lower clamping force, e.g. B. by wear or the like, is almost impossible.
- a variety of drill sizes can therefore be used commercially available polygonal profile bars in different dimensions are produced using only spiral feed grooves be introduced, the clamping shaft taking advantage of offers positive entrainment in the multi-jaw chuck. Therefor the polygonal profile rod must at least in the area of Clamping shank offset by 120 ° exhibit.
- the Clamping shank also have a cylindrical cross section, around the clamping shaft to the drill holder z.
- B. in Adapt hammer drills be preferred Extrusion blanks used in the area of the conveyor spiral as a polygonal profile and in the area of the clamping shank with cylindrical profile. The team can then to the respective conditions for use e.g. B. in Hammer drills are adjusted during the helical shank manufactured with the described spiral conveyor becomes.
- Extrusion blank or forging blank manufactured in this way be made by starting shapes with a polygonal profile in the area of the spiral shaft and a z.
- B. cylindrical Profile in the area of the clamping shaft in any Diameter variants and cross-sectional shapes taken into account become.
- Spiral shaft and clamping shaft can also be used in their respective shape by a suitable welding process (e.g. friction welding, resistance welding, etc.) be connected to each other.
- a suitable welding process e.g. friction welding, resistance welding, etc.
- FIGS. 1 to 3 shows a rock drill 1 with a drill head 2, one Helical shaft 3 and a clamping shaft 4.
- the drill head 2 has a standard, roof-shaped hard metal insert 5, which with its outer diameter D den Nominal drill diameter forms.
- FIGS. 1 to 3 is as Starting material for the production of the rock drill 1 commercially available hexagonal steel, as used for example in DIN 176, DIN 1015 or DIN 59110 in various Dimensions is available. The width across flats serves here s to determine the respective dimensions.
- the diagonal 8 placed through the respective corner points 7 of the hexagonal profile 6 has a length of d 1 , which corresponds to the diameter of the circumference 9 through the corner points 7.
- a helical conveyor groove 10 introduced, the Polygonal profile in the area of the back webs 11 in full preserved.
- the backstays are therefore exposed flat surface sections 12 to 17 together, which is usually form the key surfaces of the hexagonal profile 6.
- This Surface sections 12 to 17 are by vertical longitudinal edges 7 'interrupted by the corner points 7 of the hexagonal cross-section run.
- the total funding volume is determined by the space between the radius 19 with the Nominal diameter D and the corresponding surface sections 12 to 17 and the feed spiral grooves 10 are formed.
- FIG. 2b In the top view according to FIG. 2b is an example Inlet area 20 into the underlying conveyor spiral groove 10 shown, d. H. the headrest 21 for the Tungsten carbide cutting plate 5 supports these in plan view approximately V-shaped. The direction of rotation is arrow 22 characterized.
- the hard metal cutting insert is 5 inserted into the drill head 2 such that two opposite corner points 7 the cutting plate 5 approximately limit on both sides.
- the surface sections 12 to 17 run as Wrench flats over the entire drilling tool and thus form the characteristic conveyor spiral with flattened vertical Surface sections through the respective helical conveyor groove 10 are interrupted.
- the clamping team also has one form-fitting polygonal profile, which is particularly suitable for non-rotating use in an impact drill, for example with three-jaw chuck.
- FIGS. 4 to 6 An alternative embodiment of the invention is shown in FIGS. 4 to 6 shown. The same parts are the same Provide reference numerals as described for FIGS. 1 to 3.
- the rock drill 1 'shown in FIGS. 4 to 6 has consequently in turn a drill head 2, a helical shaft 3 and a clamping shaft 4. Training the Helical shaft 3 with drill head 2 is identical to Embodiment according to FIGS. 1 to 3. Only the Clamping shank 4 is, for example, a cylindrical one Clamping end 4 'formed.
- FIGS. 7 and 8 can be used as a starting material for producing a drilling tool as shown in FIGS. 7 and 8.
- a profile can be produced in an extrusion process or a forging process together with a cylindrical clamping shaft 4, the cylindrical clamping shaft 4 z. B. has a diameter d 3 , as is required for producing an SDS-Plus clamping end of a hammer drill.
- the hexagonal profile 6 is in turn characterized by its width across flats s and produced in a common extrusion or forging process together with the clamping shank.
- spiral shaft 3 and the cylindrical clamping shaft 4 'of the version 4 to 6, for example, also in a suitable one Welding processes are connected to each other.
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)
Description
- Fig. 1
- eine perspektivische Ansicht eines Gesteinsbohrers mit 6-Kant-Querschnitt,
- Fig. 2
- eine Seitenansicht des Gesteinsbohrers nach Fig. 1,
- Fig. 2a
- eine Draufsicht des Gesteinsbohrers nach Fig. 2,
- Fig. 2b
- eine vergrößerte Darstellung der Fig. 2a,
- Fig. 2c
- die Ansicht auf das untere Ende des Gesteinsbohrers nach Fig. 2,
- Fig. 3
- den Gesteinsbohrer nach Fig. 2 um 90° gedreht, d. h. seine Seitenansicht,
- Fig. 4
- eine weitere Variante eines Gesteinsbohrers in perspektivischer Ansicht,
- Fig. 5
- eine Seitenansicht des Gesteinsbohrers nach Fig. 4,
- Fig. 5a
- eine Draufsicht des Gesteinsbohrers nach Fig. 5,
- Fig. 5b
- eine vergrößerte Darstellung nach Fig. 5a,
- Fig. 6
- eine Seitenansicht des Gesteinsbohrers nach Fig. 5,
- Fig. 7
- ein Ausgangsrohling in Seitenansicht zur Herstellung des Werkzeugs nach Fig. 5 bis 6,
- Fig. 7a
- eine Draufsicht auf den Rohling nach Fig. 7 und
- Fig. 8
- eine Seitenansicht des Rohlings nach Fig. 7.
- 1
- Gesteinsbohrer
- 2
- Bohrerkopf
- 3
- Wendelschaft
- 4
- Einspannschaft
- 5
- Hartmetall-Schneidplatte
- 6
- Sechskantprofil
- 7, 7'
- Eckpunkte/ Längskante
- 8
- Diagonale
- 9
- Umkreis
- 10
- Förderwendelnut
- 11
- Rückenstege
- 12
- Flächenabschnitt
- 13
- Flächenabschnitt
- 14
- Flächenabschnitt
- 15
- Flächenabschnitt
- 16
- Flächenabschnitt
- 17
- Flächenabschnitt
- 18
- Spantaschen
- 19
- Umkreis
- 20
- Einlaufbereich
- 21
- Ropfabstützung
- 22
- Pfeil
Claims (8)
- Bohrwerkzeug, insbesondere Gesteinsbohrer, mit einem Bohrerkopf, einem Einspannschaft und einem dazwischen liegenden Wendelschaft, in welchem eine Bohrmehlnut eingebracht ist, dadurch gekennzeichnet, daß wenigstens das Ausgangsmaterial für den Wendelschaft (3) aus einem im Querschnitt vorzugsweise symmetrischen Polygon-Profilstab (6) gebildet ist, in welchen die Förderwendelnut (10) zusätzlich vorzugsweise spanabhebend eingebracht ist.
- Bohrwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß der Einspannschaft (4) aus dem gleichen Polygon-Profilstab (6) gebildet ist wie der Wendelschaft (3).
- Bohrwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Profilstab (6) zur Bildung des Einspannschafts (4) und/oder des Wendelschafts (3) aus einem symmetrischen Mehrkantprofil (6) besteht, mit wenigstens drei in ein handelsübliches Dreibackenfutter einspannbaren Spannflächen, die in einem Drehwinkel β ≈ 120° versetzt angeordnet sind.
- Bohrwerkzeug nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Profilstab (6) aus einem handelsüblichen Mehrkantprofilstab, wie 6-Kant-Profilstab oder 4-Kant-Profilstab oder 3-Kant-Profilstab oder dergleichen gebildet ist.
- Bohrwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Bohrerkopf (2) mit einer vorzugsweise im Querschnitt des Profilstabs (6) symmetrisch angeordneten, in Seitenansicht vorzugsweise dachförmig ausgebildeten Hartmetall-Schneidplatte (5) versehen ist.
- Bohrwerkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ausgangsmaterial für das Bohrwerkzeug (1, 1') aus einem Fließpreßrohling oder Schmiederrohling oder ähnlichem besteht, mit einem im Querschnitt polygonartigen Mehrkantprofil (6) zumindest im Bereich des Wendelschaftes (3) und einem vorzugsweise zylindrischen oder profilierten Einspannschaft (4, 4').
- Bohrwerkzeug nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Einspannschaft (4, 4') mit dem Wendelschaft (3) über eine Schweißverbindung verbunden ist.
- Bohrwerkzeug nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Einspannschaft (4') als Hammerbohrer-Einspannschaft ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722519 | 1997-05-30 | ||
DE19722519A DE19722519A1 (de) | 1997-05-30 | 1997-05-30 | Bohrwerkzeug |
PCT/DE1998/001376 WO1998054435A1 (de) | 1997-05-30 | 1998-05-15 | Bohrwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1015727A1 EP1015727A1 (de) | 2000-07-05 |
EP1015727B1 true EP1015727B1 (de) | 2002-06-05 |
Family
ID=7830841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98933556A Expired - Lifetime EP1015727B1 (de) | 1997-05-30 | 1998-05-15 | Bohrwerkzeug |
Country Status (6)
Country | Link |
---|---|
US (1) | US6213232B1 (de) |
EP (1) | EP1015727B1 (de) |
CN (1) | CN1094168C (de) |
DE (2) | DE19722519A1 (de) |
DK (1) | DK1015727T3 (de) |
WO (1) | WO1998054435A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19915304B4 (de) * | 1999-03-22 | 2006-07-27 | Robert Bosch Gmbh | Bohrwerkzeug |
DE19915305C2 (de) * | 1999-04-03 | 2003-11-20 | Hawera Probst Gmbh | Bohrwerkzeug |
US7097396B1 (en) | 2000-02-16 | 2006-08-29 | Kabushiki Kaisha Miyanaga | Drill bit |
DE10243403A1 (de) * | 2002-09-18 | 2004-04-01 | Hawera Probst Gmbh | Verfahren zur Herstellung eines Werkzeugs, insbesondere eines Bohrers oder Fräsers |
US6874978B2 (en) * | 2002-03-25 | 2005-04-05 | Milwaukee Electric Tool Corporation | Boring bit and methods for manufacturing boring bits |
GB2393931A (en) * | 2002-10-10 | 2004-04-14 | Black & Decker Inc | Tool for a rotary hammer |
US20070297867A1 (en) * | 2005-02-22 | 2007-12-27 | Weiler Donald R | Pilot Drill with Pilot Drill and Coupon Retainers and Hot Tapping Machine Using the Same |
US7909547B2 (en) | 2005-10-08 | 2011-03-22 | Milwaukee Electric Tool Corporation | Replaceable tip for a bit or auger bit |
US8328477B2 (en) | 2006-03-02 | 2012-12-11 | Milwaukee Electric Tool Corporation | Cutting tool |
US7800122B2 (en) | 2006-09-07 | 2010-09-21 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Light emitting diode device, and manufacture and use thereof |
US9500038B2 (en) | 2013-02-01 | 2016-11-22 | Milwaukee Electric Tool Corporation | Auger bit with replaceable cutting bit |
DE102021204603A1 (de) | 2021-05-06 | 2022-11-10 | Robert Bosch Gesellschaft mit beschränkter Haftung | Bohrwerkzeug |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR628665A (fr) * | 1926-05-17 | 1927-10-27 | Hand Tools Ltd | Perfectionnements aux fraises rotatives ou à percussion destinées à perforer la pierre et les matières analogues |
DE887631C (de) * | 1951-05-23 | 1953-08-24 | Alfred Kunkel | Steinbohrer |
US2773672A (en) * | 1952-09-17 | 1956-12-11 | Ellis C Holmes | Drilling bit |
CH331438A (de) * | 1955-02-02 | 1958-07-31 | Kunkel Alfred | Gesteinsbohrer |
DE2045896A1 (de) * | 1970-01-30 | 1972-03-23 | Fischer Artur | Schlagbohrdubeleinheit zum Bohren von Lochern und zum dann Setzen von Be festigungselementen |
CH626557A5 (de) * | 1978-09-28 | 1981-11-30 | Guex Philippe & Fils Sa | |
SE459680B (sv) * | 1984-10-01 | 1989-07-24 | Santrade Ltd | Borrstaal |
CS272904B1 (en) * | 1988-09-12 | 1991-02-12 | Vladislav Ing Stary | Drilling tool |
DE4028261A1 (de) * | 1990-08-06 | 1992-02-13 | Fischer Artur Werke Gmbh | Bohrer zur herstellung von zylindrischen bohrloechern |
DE4306981A1 (de) * | 1993-03-05 | 1994-09-08 | Keil Werkzeugfabrik Karl Eisch | Bohrer für Gestein oder dergleichen |
-
1997
- 1997-05-30 DE DE19722519A patent/DE19722519A1/de not_active Withdrawn
-
1998
- 1998-05-15 CN CN988054779A patent/CN1094168C/zh not_active Expired - Fee Related
- 1998-05-15 DK DK98933556T patent/DK1015727T3/da active
- 1998-05-15 EP EP98933556A patent/EP1015727B1/de not_active Expired - Lifetime
- 1998-05-15 WO PCT/DE1998/001376 patent/WO1998054435A1/de active IP Right Grant
- 1998-05-15 DE DE59804344T patent/DE59804344D1/de not_active Expired - Lifetime
- 1998-05-15 US US09/424,502 patent/US6213232B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6213232B1 (en) | 2001-04-10 |
DE59804344D1 (de) | 2002-07-11 |
DK1015727T3 (da) | 2002-09-16 |
CN1257562A (zh) | 2000-06-21 |
CN1094168C (zh) | 2002-11-13 |
WO1998054435A1 (de) | 1998-12-03 |
EP1015727A1 (de) | 2000-07-05 |
DE19722519A1 (de) | 1998-12-03 |
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