EP0361189A1 - Bohrwerkzeug mit schraubenförmigem Schaft - Google Patents

Bohrwerkzeug mit schraubenförmigem Schaft Download PDF

Info

Publication number
EP0361189A1
EP0361189A1 EP89116760A EP89116760A EP0361189A1 EP 0361189 A1 EP0361189 A1 EP 0361189A1 EP 89116760 A EP89116760 A EP 89116760A EP 89116760 A EP89116760 A EP 89116760A EP 0361189 A1 EP0361189 A1 EP 0361189A1
Authority
EP
European Patent Office
Prior art keywords
drilling tool
reinforcement
tool according
drilling
shaft
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.)
Withdrawn
Application number
EP89116760A
Other languages
German (de)
English (en)
French (fr)
Inventor
Vladislav Stary
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.)
NAREX PRAHA STATNI PODNIK
Original Assignee
NAREX PRAHA STATNI PODNIK
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 NAREX PRAHA STATNI PODNIK filed Critical NAREX PRAHA STATNI PODNIK
Publication of EP0361189A1 publication Critical patent/EP0361189A1/de
Withdrawn legal-status Critical Current

Links

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
    • E21B10/44—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

Definitions

  • the invention relates to a drilling tool for drilling in particular masonry, stone, concrete and. Like., Which is preferably suitable for electrical hand tools with rotary and / or percussion drill drive.
  • the object of the invention is to perfect the construction of drilling tools and to create a rock drilling tool with better properties, which, above all, enables the drilling holes to be bettered by a higher strength, longer tool life, the quality of the drill holes and a sufficient depth of the helical groove . Furthermore, the tool should be able to be produced cheaper and with less material.
  • a tool which has a drill head with at least one cutting edge, a shaft with a central reinforcement and at least one discharge groove and a fastening pin, the shaft with the discharge screw surface being formed by a twisted flat rod, which has its axis is provided with a reinforcement, the transverse dimension of which is twice to five times the thickness of the flat bar. At least one continuous longitudinal web is formed laterally on the thickened central part of the rod.
  • the reinforcement of the cross section of this flat bar can have the shape of a circle, square, hexagon or octagon and can be provided with one or more longitudinal bars.
  • the shaft has one or more helical discharge grooves.
  • This tool shaft with the discharge screw surface serves as a conveying element for discharging the cuttings from the hole and can be rotated with a uniform or non-uniform pitch.
  • the construction of the drilling tool is such that the non-twisted end parts of the flat rod are machined at both ends of the discharge screw surface to form the profiled fastening pin and the tool head.
  • a cutting plate is used in the tool head, which is supported in the direction of rotation against the webs or edge parts of the flat rod (see FIG. 2). This cutting plate can also be used parallel to the edge part of the flat bar.
  • the main advantage of the drilling tool according to the invention over known tools lies in the simpler and faster production with a large saving in material, for example by twisting a flat rod.
  • the preferably cold shaping of the flat rod by twisting increases the strength and durability of the shaft with the discharge screw surface and maintains a sufficient depth of the discharge grooves. Due to the high strength The speed and durability of the tool ensure optimal discharge of the cuttings, even from narrow drill holes. With a drilling tool with a non-uniform slope of the discharge screw surface, not only is a further increase in the service life of the tool and its drilling properties achieved, but in combination with different cross-sectional shapes, the drilling and discharge properties of the tool according to the invention can be adapted to different operating conditions.
  • the one-piece tool according to FIG. 1 has a helical shaft 1, an end pin 2 and a head 3 with a cutting insert 4.
  • the cross section of the shaft and the tool head 3 has a thickened rectangular central part 6 and two lateral longitudinal webs 7.
  • a slightly wider insert 4 is attached obliquely in the head 3.
  • Fig. 3 shows an axionomische view of the semifinished product of the flat rod 5 with a round reinforcement 6 and two longitudinal webs 7 before twisting.
  • Fig. 4 possibilities of different semi-finished products of the flat rod 5 are shown, namely according to 6.1 with a circular cross section of the reinforcement 6 and two longitudinal webs 7, according to 6.11 with a circular cross section of the reinforcement 6 and a longitudinal web, according to 6.2 with a square cross section of the reinforcement and two Longitudinal webs, according to 6.21 with the same reinforcement and one longitudinal web, according to 6.3 with hexagonal cross section and two longitudinal webs, according to 6.31 with the same reinforcement and one longitudinal web, according to 6.4 with octagonal cross section of the reinforcement and two longitudinal webs and according to 6.41 with the same cross section and one longitudinal web.
  • the discharge screw surface of the shaft 1 merges directly into the tool head 3.
  • the insert 4 inserted into the head 3 is laterally supported in the direction of rotation against the longitudinal webs 7 of the flat rod 5.
  • the shaft 1 has a variable or non-uniform slope of its discharge screw surface and a reinforcement with a circular cross section according to 6.11, with a soldered or pinned cutting plate 4, which is inserted in the tool head according to FIG. 2.
  • the transitions between the reinforced central part 6 of the shaft 1 and the longitudinal web (s) 7 are rounded in order to avoid stress concentrations after the rotation.
  • the width and shape of the webs 7 is appropriately selected according to the particular conditions of use - hard or softer rock.

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
EP89116760A 1988-09-12 1989-09-11 Bohrwerkzeug mit schraubenförmigem Schaft Withdrawn EP0361189A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS609388A CS272904B1 (en) 1988-09-12 1988-09-12 Drilling tool
CS6093/88 1988-09-12

Publications (1)

Publication Number Publication Date
EP0361189A1 true EP0361189A1 (de) 1990-04-04

Family

ID=5407170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116760A Withdrawn EP0361189A1 (de) 1988-09-12 1989-09-11 Bohrwerkzeug mit schraubenförmigem Schaft

Country Status (3)

Country Link
EP (1) EP0361189A1 (cs)
CS (1) CS272904B1 (cs)
DK (1) DK447689A (cs)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996007504A1 (de) * 1994-09-06 1996-03-14 Karl Metzger Verfahren zur herstellung eines mehrschneiden-werkzeuges
WO1998054434A1 (de) 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug, insbesondere gesteinsbohrer
WO1998054436A1 (de) 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug
WO1998054435A1 (de) * 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug
DE19915304A1 (de) * 1999-03-22 2000-09-28 Hawera Probst Gmbh Bohrwerkzeug
DE19915305A1 (de) * 1999-04-03 2000-10-12 Hawera Probst Gmbh Bohrwerkzeug
EP1190797A1 (de) 2000-09-25 2002-03-27 HILTI Aktiengesellschaft Bohrwerkzeug
DE4314868C2 (de) * 1993-05-05 2002-05-16 Hawera Probst Kg Hartmetall Bohrwerkzeug
EP0846835A3 (de) * 1996-12-05 2002-09-25 HILTI Aktiengesellschaft Beton- oder Gesteinbohrwerkzeug mit wendelförmigen Abfuhrnuten
DE19859885B4 (de) * 1998-05-20 2005-06-16 Robert Bosch Gmbh Verfahren zur Herstellung eines Bohrwerkzeugs
US6910838B2 (en) * 2000-03-02 2005-06-28 Hawera Probst, Gmbh Rock drill
WO2006114306A1 (en) * 2005-04-28 2006-11-02 Irwin Industrial Tool Company A/S A drilling tool
EP2327491A1 (de) 2009-11-26 2011-06-01 Südsta AG Verfahren zur Herstellung eines Bohrers und derart hergestellter Bohrer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567028A (cs) * 1900-01-01
FR408276A (cs) * 1900-01-01
FR356051A (fr) * 1905-07-11 1905-11-20 Johann Fischer Fer de mine rotatif
DE493860C (de) * 1930-03-12 Siemens Schuckertwerke Akt Ges Verfahren zur Herstellung von Bohrern mit Schneidentraegern aus Hartmetall
US2504601A (en) * 1947-12-30 1950-04-18 Earl M Spry Auger drill
DE887631C (de) * 1951-05-23 1953-08-24 Alfred Kunkel Steinbohrer
CH331438A (de) * 1955-02-02 1958-07-31 Kunkel Alfred Gesteinsbohrer
EP0126409B1 (de) * 1983-05-18 1987-09-23 Hawera Probst GmbH + Co. Bohrwerkzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567028A (cs) * 1900-01-01
FR408276A (cs) * 1900-01-01
DE493860C (de) * 1930-03-12 Siemens Schuckertwerke Akt Ges Verfahren zur Herstellung von Bohrern mit Schneidentraegern aus Hartmetall
FR356051A (fr) * 1905-07-11 1905-11-20 Johann Fischer Fer de mine rotatif
US2504601A (en) * 1947-12-30 1950-04-18 Earl M Spry Auger drill
DE887631C (de) * 1951-05-23 1953-08-24 Alfred Kunkel Steinbohrer
CH331438A (de) * 1955-02-02 1958-07-31 Kunkel Alfred Gesteinsbohrer
EP0126409B1 (de) * 1983-05-18 1987-09-23 Hawera Probst GmbH + Co. Bohrwerkzeug

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314868C2 (de) * 1993-05-05 2002-05-16 Hawera Probst Kg Hartmetall Bohrwerkzeug
US5782145A (en) * 1994-09-06 1998-07-21 Metzger; Karl Process for the fabrication of a multi-blade tool
WO1996007504A1 (de) * 1994-09-06 1996-03-14 Karl Metzger Verfahren zur herstellung eines mehrschneiden-werkzeuges
EP0846835A3 (de) * 1996-12-05 2002-09-25 HILTI Aktiengesellschaft Beton- oder Gesteinbohrwerkzeug mit wendelförmigen Abfuhrnuten
CN1094168C (zh) * 1997-05-30 2002-11-13 豪沃拉普鲁布斯特有限公司 一种钻具
WO1998054434A1 (de) 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug, insbesondere gesteinsbohrer
WO1998054436A1 (de) 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug
WO1998054435A1 (de) * 1997-05-30 1998-12-03 Hawera Probst Gmbh Bohrwerkzeug
US6213232B1 (en) 1997-05-30 2001-04-10 Hawera Probst Gmbh Drilling tool helical shank formed from a polygonal profile bar
CN1094169C (zh) * 1997-05-30 2002-11-13 豪沃拉普鲁布斯特有限公司 一种凿岩钻头
DE19859885B4 (de) * 1998-05-20 2005-06-16 Robert Bosch Gmbh Verfahren zur Herstellung eines Bohrwerkzeugs
DE19915304A1 (de) * 1999-03-22 2000-09-28 Hawera Probst Gmbh Bohrwerkzeug
DE19915304B4 (de) * 1999-03-22 2006-07-27 Robert Bosch Gmbh Bohrwerkzeug
DE19915305C2 (de) * 1999-04-03 2003-11-20 Hawera Probst Gmbh Bohrwerkzeug
DE19915305A1 (de) * 1999-04-03 2000-10-12 Hawera Probst Gmbh Bohrwerkzeug
US6910838B2 (en) * 2000-03-02 2005-06-28 Hawera Probst, Gmbh Rock drill
EP1190797A1 (de) 2000-09-25 2002-03-27 HILTI Aktiengesellschaft Bohrwerkzeug
WO2006114306A1 (en) * 2005-04-28 2006-11-02 Irwin Industrial Tool Company A/S A drilling tool
CN101166885B (zh) * 2005-04-28 2013-04-24 爱尔文工业工具公司 钻孔工具
EP2327491A1 (de) 2009-11-26 2011-06-01 Südsta AG Verfahren zur Herstellung eines Bohrers und derart hergestellter Bohrer
DE102009055748A1 (de) * 2009-11-26 2011-06-09 Südsta AG Verfahren zur Herstellung eines Bohrers

Also Published As

Publication number Publication date
DK447689D0 (da) 1989-09-11
CS609388A1 (en) 1990-03-14
CS272904B1 (en) 1991-02-12
DK447689A (da) 1990-03-13

Similar Documents

Publication Publication Date Title
DE2444899C2 (de) Bohrwerkzeug mit Bohrer und Aufnahmeteil
DE102010028824A1 (de) Gewindeschneidende Betonschraube
EP0361189A1 (de) Bohrwerkzeug mit schraubenförmigem Schaft
DE19545647A1 (de) Drehschlag-Wendelbohrer
EP1316669A2 (de) Gesteinbohrwerkzeug
DE4436916A1 (de) Bohrwerkzeug mit Trägerkörper und Schneidkörpern
DE19807394A1 (de) Bohr- und/oder Meisselwerkzeug
DE2735368C2 (de) Gesteinsbohrkrone mit einem Hartmetall-Bohrkopf
DE3742661A1 (de) Gesteinsbohrer
DE102007000607A1 (de) Gewindefurchende Schraube
DE3635538A1 (de) Bohrwerkzeug mit austauschbarer foerderwendel
DE8320045U1 (de) Stahlspaten fuer schlaghaemmer
DE1478789A1 (de) Mitnehmer fuer Befestigungsmittel mit einem mit Nuten versehenen Kopfstueck
DE202011103209U1 (de) Meißelwerkzeug
DE3025890A1 (de) Bohrer fuer bohrhaemmer, insbes. zum bohren in gestein, beton o.dgl.
DE2403722A1 (de) Bohrer
DE1927754B2 (de) Gesteinsbohrer
EP3409880B1 (de) Hybrid-eisbohrer
DE1608358C3 (de) Bohrer zum drehschlagenden Bohren
DE102004005967A1 (de) MIP-Schnecke
EP0985081B1 (de) Verfahren zur herstellung eines gesteinbohrers
DE3540355C2 (de) Bohrer zum drehschlagenden Bohren
AT165937B (de) Verbindung der Teile von Gesteinsbohrern, Abbauspießen und anderen Preßluftwerkzeugen untereinander und Befestigung dieser Werkzeuge an den Einsteckenden von Preßluftbohrhämmern oder Hammerbohrmaschinen
AT15312U1 (de) Eisbohrer
DE1427710C (de) Verfahren zum Bohren einer Serie von Löchern in Baustoffen und Bohrer zur Durchführung des Verfahrens

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 ES FR GB IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19901005