EP1015727B1 - Bohrwerkzeug - Google Patents

Bohrwerkzeug Download PDF

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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
Application number
EP98933556A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1015727A1 (de
Inventor
Wolfgang Peetz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hawera Probst GmbH filed Critical Hawera Probst GmbH
Publication of EP1015727A1 publication Critical patent/EP1015727A1/de
Application granted granted Critical
Publication of EP1015727B1 publication Critical patent/EP1015727B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
EP98933556A 1997-05-30 1998-05-15 Bohrwerkzeug Expired - Lifetime EP1015727B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19722519A DE19722519A1 (de) 1997-05-30 1997-05-30 Bohrwerkzeug
DE19722519 1997-05-30
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 (zh)
EP (1) EP1015727B1 (zh)
CN (1) CN1094168C (zh)
DE (2) DE19722519A1 (zh)
DK (1) DK1015727T3 (zh)
WO (1) WO1998054435A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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
CN205218137U (zh) 2013-02-01 2016-05-11 米沃奇电动工具公司 具有可替换钻头的螺旋钻头
DE102021204603A1 (de) 2021-05-06 2022-11-10 Robert Bosch Gesellschaft mit beschränkter Haftung Bohrwerkzeug

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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 (zh) * 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

Also Published As

Publication number Publication date
EP1015727A1 (de) 2000-07-05
DK1015727T3 (da) 2002-09-16
DE59804344D1 (de) 2002-07-11
CN1094168C (zh) 2002-11-13
WO1998054435A1 (de) 1998-12-03
CN1257562A (zh) 2000-06-21
US6213232B1 (en) 2001-04-10
DE19722519A1 (de) 1998-12-03

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