EP0937860B1 - Outil de forage et ou de frappe - Google Patents

Outil de forage et ou de frappe Download PDF

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Publication number
EP0937860B1
EP0937860B1 EP98811179A EP98811179A EP0937860B1 EP 0937860 B1 EP0937860 B1 EP 0937860B1 EP 98811179 A EP98811179 A EP 98811179A EP 98811179 A EP98811179 A EP 98811179A EP 0937860 B1 EP0937860 B1 EP 0937860B1
Authority
EP
European Patent Office
Prior art keywords
head
grooves
tool according
removal
drilling
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
EP98811179A
Other languages
German (de)
English (en)
Other versions
EP0937860A1 (fr
Inventor
Werner Dipl.-Ing. Kleine
Anton Knoller
Udo Hauptmann
Josef Starkmann
Harald Geiger
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0937860A1 publication Critical patent/EP0937860A1/fr
Application granted granted Critical
Publication of EP0937860B1 publication Critical patent/EP0937860B1/fr
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
    • 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
    • E21B10/58—Chisel-type inserts

Definitions

  • the invention relates to a drilling and / or chisel tool with one of the receptacles Drive units adapted plug-in end to which a shaft is attached in the drilling direction adjoins at least one helical discharge groove open to the circumference, wherein a drill head with a diameter substantially corresponding to the shaft is adjacent, the one or in recesses that are open to the free end has several carbide inserts, starting from one centering part in three Radial directions with at least to the circumference of the head Cutting areas are provided and between the cutting areas of the head three Has circumferentially open head grooves that are connected to the discharge grooves (see e.g. DE-A-38 20 695).
  • the tools of the type mentioned are mainly used to edit Rock, concrete and masonry.
  • these are with an insertion end provided which of the relevant recording of the application find Drive unit is adapted.
  • drive devices for example Hammer drills, combination hammers and chisel hammers.
  • a shank at the insertion end of the tool which has at least one helical discharge groove open to the circumference.
  • This helical discharge groove is used to transport the cuttings that come from the drill head, which is arranged adjacent to the shaft is dismantled.
  • the drill head with one or more carbide inserts, which have the free end protrude slightly from the drill head and are arranged in recesses which are open towards the free end of the drill head.
  • the arrangement of hard metal in the manner of a star has proven particularly useful Arrangement of cutting areas, according to which of a centrally arranged Centering part in three directions at essentially the same angle Carbide inserts run radially up to at least the circumference of the head.
  • This kind the arrangement of hard metal inserts leads to advantages in the drilling capacity in the Accuracy of the bore to be produced and in the quiet and therefore low-vibration Operating mode.
  • GB2075409A is a drilling tool with hard metal inserts and a two-start Conveying helix known, the drill head four cutting edges and each associated has four head grooves. Two adjacent head grooves open into a discharge groove Funding spiral. However, a drill head with four cutting edges does not correspond to the intended one Training with exactly three cutting edges.
  • a drilling tool with hard metal inserts in the drilling head has three or more asymmetrically arranged cutting edges and two or three head grooves. Each a top groove opens into a discharge groove of the conveyor helix.
  • the disadvantage is the number of Head grooves corresponding number of discharge grooves, which are only with three discharge grooves have difficult to control processes.
  • the invention is therefore based on the object of a drilling and / or chiseling tool with the advantageous arrangement of hard metal inserts mentioned above to further develop that it can also be done using easily controllable forming processes can be produced economically.
  • the object is achieved with a tool of the type mentioned at the outset in that the three head down are assigned to two discharge grooves.
  • a preferred one, which is particularly advantageous with regard to the removal of the cuttings effective embodiment is that one of the two discharge grooves with two Head grooves is connected.
  • This embodiment not only has advantages from the perspective of FIG Manufacture and use, but it also leads to an extraordinary appearance attractive design of the head. This argument is also for the economic Success of the tool according to the invention is important because an operator already From the visual impression, the tool is assessed as stable and efficient and trust him accordingly.
  • At least one of the Head grooves is connected to both discharge grooves. This condition is easy to meet, by providing the head groove in question with a length such that both of them Execution cuts.
  • the removal grooves can be formed with a view to an easily controllable forming uniformly distributed deformation forces, for example with extraction grooves, have the same cross-sectional areas.
  • the removal grooves can have different cross-sectional areas. This opens up the possibility, for example, that performance, which is connected with two head grooves, somewhat in the cross-sectional area to be made larger so that the drilling cuttings resulting from two head grooves are unimpeded can be transported.
  • the three head grooves have essentially the same cross-sectional areas.
  • the head is provided with cutouts which are open towards the free end, in which one or more hard metal inserts are arranged.
  • These recesses can be designed in different ways, but preferably penetrate the drilling direction End face of the head over its entire diameter: So they can Recesses run in a star shape in the form of a slot.
  • a one-piece carbide insert as a star can form the recess be shaped. For example, four are available when using multiple carbide inserts Parts, namely their three with radially star-shaped cutting areas and a centering part arranged in the middle.
  • the tool shown in FIGS. 1 and 2 is designed, for example, as a drilling tool and has an insertion end 1, a shaft 2 and a head 3.
  • the insertion end 1 is on a not shown drawing of a drive device adapted and thus has means for connection to this recording.
  • This Means consist of axially closed locking grooves 4 and one side axially open driving grooves 5.
  • the shaft 2 is provided with two discharge grooves 6, 7. Both discharge grooves 6,7 are Open to the extent and have the same cross-sectional areas in the present example.
  • the head 3 is provided with cutouts 8 which are open towards the free end.
  • Recesses 8 are - as also shown in FIG. 2 - a one-piece in the present example Tungsten carbide insert 9 arranged, which, starting from a centering part 9b in three Cutting areas 9a extending radially up to the circumference of the head 8 having.
  • three head grooves 10, 11, 12 are provided which run parallel to the main axis and to the circumference of the head 3 are open.
  • These head grooves 10,11,12 are with the Removal grooves 6, 7 connected.
  • the head grooves 10, 12 are with the Discharge groove 6 and the top groove 11 connected to the discharge groove 7.

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)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (7)

  1. Outil de forage et/ou de burinage avec une extrémité insérable (1) qui est adaptée au mandrin d'appareils d'entraínement et à laquelle se raccorde, dans la direction de forage, une tige (2) avec au moins une gorge d'évacuation hélicoïdale (6, 7) ouverte en direction de la périphérie, au voisinage de la tige (2) se trouvant une tête de forage (3) qui présente un diamètre correspondant sensiblement à celui de la tige (2) et qui comporte, dans des évidements (8) ouverts en direction de l'extrémité libre, un ou plusieurs éléments rapportés en métal dur (9) qui, à partir d'une partie centrale (9b), sont pourvus de zones coupantes (9a) s'étendant radialement dans trois directions au moins jusqu'à la périphérie de la tête (3) et, entre les zones coupantes (9a), la tête (3) étant pourvue de trois gorges de tête (10, 11, 12) qui sont ouvertes en direction de la périphérie et qui communiquent avec les gorges d'évacuation (6, 7), caractérisé en ce qu'aux trois gorges de tête (10, 11, 12) sont associées exactement deux gorges d'évacuation (6, 7).
  2. Outil selon la revendication 1, caractérisé en ce que les trois zones coupantes (9a) s'étendent radialement selon un angle sensiblement identique jusqu'à la périphérie de la tête (3).
  3. Outil selon la revendication 2, caractérisé en ce qu'une des deux gorges d'évacuation (6) communique avec deux gorges de tête (10, 12).
  4. Outil selon la revendication 2 ou 3, caractérisé en ce qu'au moins une des gorges de tête (10, 11, 12) communique avec deux gorges d'évacuation (6, 7).
  5. Outil selon l'une des revendications 2 à 4, caractérisé en ce que les gorges d'évacuation (6, 7) présentent des surfaces transversales identiques.
  6. Outil selon l'une des revendications 2 à 4, caractérisé en ce que les gorges d'évacuation (6, 7) présentent des surfaces transversales différentes.
  7. Outil selon l'une des revendications 1 à 6, caractérisé en ce que les trois gorges de tête (10, 11, 12) présentent des surfaces transversales sensiblement identiques.
EP98811179A 1998-02-21 1998-11-27 Outil de forage et ou de frappe Expired - Lifetime EP0937860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807394 1998-02-21
DE19807394A DE19807394A1 (de) 1998-02-21 1998-02-21 Bohr- und/oder Meisselwerkzeug

Publications (2)

Publication Number Publication Date
EP0937860A1 EP0937860A1 (fr) 1999-08-25
EP0937860B1 true EP0937860B1 (fr) 2001-11-21

Family

ID=7858546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811179A Expired - Lifetime EP0937860B1 (fr) 1998-02-21 1998-11-27 Outil de forage et ou de frappe

Country Status (6)

Country Link
US (1) US6116361A (fr)
EP (1) EP0937860B1 (fr)
JP (1) JP4361983B2 (fr)
CN (2) CN1226627A (fr)
DE (2) DE19807394A1 (fr)
DK (1) DK0937860T3 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942986A1 (de) * 1999-09-09 2001-03-15 Hilti Ag Bohrwerkzeug
DE19942985A1 (de) * 1999-09-09 2001-03-15 Hilti Ag Bohrwerkzeug
DE19942987A1 (de) * 1999-09-09 2001-03-15 Hilti Ag Bohrwerkzeug
US6374931B1 (en) 1999-11-03 2002-04-23 Relton Corporation Multiple cutter rotary hammer bit
DE10006936A1 (de) * 2000-02-16 2001-08-23 Hilti Ag Bohrwerkzeug für Gestein
DE10053344A1 (de) * 2000-10-27 2002-05-08 Hilti Ag Gesteinsbohrer
DE10122299C2 (de) * 2001-05-08 2003-11-13 Tracto Technik Verfahren zum Felsbohren
GB2393681A (en) * 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool
JP4500748B2 (ja) * 2005-09-02 2010-07-14 住友電工ハードメタル株式会社 スローアウェイ式工具
US7861807B2 (en) * 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
DE102010013723A1 (de) 2010-03-31 2011-10-06 Gdf Suez Verfahren zum Betrieb einer Horizontalbohrvorrichtung und Horizontalbohrvorrichtung
JP2015507012A (ja) * 2012-02-14 2015-03-05 ザ プロクター アンド ギャンブルカンパニー 皮膚共生プレバイオティック剤及びそれを含有する組成物の局所使用
CN103358404B (zh) * 2012-03-28 2017-03-29 博世电动工具（中国）有限公司 钻削工具及其钻头
CN103419284A (zh) * 2012-05-21 2013-12-04 博世电动工具（中国）有限公司 钻头
CN102704844A (zh) * 2012-06-20 2012-10-03 常熟市平冶机械有限公司 一种钣金钻头
EP3181261A1 (fr) * 2015-12-15 2017-06-21 HILTI Aktiengesellschaft Procede de fabrication, porte-outil et foret
CN108422019B (zh) * 2018-04-25 2023-09-29 湖北鑫运祥科技发展有限公司 一种三刃分体钻头及制作方法
US20220219306A1 (en) * 2021-01-14 2022-07-14 Milwaukee Electric Tool Corporation Tool bit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2129913A1 (de) * 1971-06-16 1972-12-21 Hilti Ag Gesteinsbohrer
GB2075409A (en) * 1980-05-09 1981-11-18 Vnii Tugoplavkikh Drills
DE3742661A1 (de) * 1987-12-16 1989-07-13 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE3820695C2 (de) * 1988-06-18 1996-07-25 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE4338667A1 (de) * 1993-11-12 1995-05-18 Hilti Ag Bohrwerkzeug
DE4407119A1 (de) * 1993-12-11 1995-06-14 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE19516270C1 (de) * 1995-05-09 1997-01-30 Heller Dinklage Gmbh Geb Bohrwerkzeug
DE19545648A1 (de) * 1995-12-07 1997-06-12 Hilti Ag Drehschlag-Wendelbohrer

Also Published As

Publication number Publication date
DE19807394A1 (de) 1999-08-26
EP0937860A1 (fr) 1999-08-25
US6116361A (en) 2000-09-12
DK0937860T3 (da) 2002-05-21
CN1313255C (zh) 2007-05-02
CN1631636A (zh) 2005-06-29
CN1226627A (zh) 1999-08-25
JPH11285911A (ja) 1999-10-19
JP4361983B2 (ja) 2009-11-11
DE59802704D1 (de) 2002-02-21

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