EP3352935A1 - Outil pour rugosifier la surface d'un trou de forage - Google Patents

Outil pour rugosifier la surface d'un trou de forage

Info

Publication number
EP3352935A1
EP3352935A1 EP16787334.8A EP16787334A EP3352935A1 EP 3352935 A1 EP3352935 A1 EP 3352935A1 EP 16787334 A EP16787334 A EP 16787334A EP 3352935 A1 EP3352935 A1 EP 3352935A1
Authority
EP
European Patent Office
Prior art keywords
tool
tool head
head
diameter
borehole
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Withdrawn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
EP16787334.8A
Other languages
German (de)
English (en)
Inventor
Markus Renner
Franz Popp
Hans-Peter Lederle
Rainer Strobel-Schmidt
Peter Ostermeier
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 EP3352935A1 publication Critical patent/EP3352935A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0027—Drills for enlarging a hole by tool swivelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
    • B23P9/02—Treating or finishing by applying pressure, e.g. knurling
    • 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
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Definitions

  • the invention relates to a tool for roughening a borehole surface, comprising a coupling portion for clamping the tool in a drill 5 and a tool head for machining the borehole surface, wherein the tool head has an outer circumferential surface, are arranged on the cutting means.
  • blind holes in the ground.
  • the blind holes can be made using diamond tipped tools.
  • the borehole wall of such a well may be very smooth, depending on the material of the subsoil. In order to reliably transmit even high tensile forces acting on the anchor rod to the ground, it is advantageous if
  • the mortar mass in the cured state positively cooperates with the borehole wall. This can be achieved by roughening or profiling at least part of the borehole wall.
  • Tools and methods for roughening a borehole surface of the type mentioned above therefore serve in particular to increase the carrying capacity of 20 chemical mortar compounds in diamond-drilled holes.
  • the comparatively smooth inner circumferential surface of a borehole is structured and provided, for example, with defined undercuts.
  • the present invention is based on the technical problem to provide a tool for roughening a borehole surface, which do not have the disadvantages described above, or at least to a lesser extent, and in particular in a simple and cost-effective manner allow the roughening of a borehole surface.
  • a tool for roughening a Bohriochober Structure with a coupling portion for clamping the tool in a drill and a tool head for machining the borehole surface, wherein the tool head has an outer circumferential surface, are arranged on the cutting means, the the lateral surface protrude laterally.
  • the outer lateral surface has a crown along 15 of a tool longitudinal direction.
  • the spherical outer contour of the tool head can serve as a guide surface for a pivoting movement of the user. For example, the tool from a first angular position by rolling along the tool longitudinal direction of the spherical tool head on the borehole surface in a second
  • a change between two angular positions here means the relative pivoting of the tool longitudinal axis to a longitudinal or center axis of the bore.
  • the lateral surface has a maximum diameter, which is arranged centrally with respect to a longitudinal extent of the tool head. In this way, a uniform tool guidance of the user during pivoting of the tool is favored.
  • the crowning of the lateral surface starting from a maximum diameter can be symmetrical in particular be designed and the Outer contour in a cross section along the tool longitudinal axis, for example, describe a circular arc segment.
  • the cutting means of the tool may comprise pins made of a cutting material, in particular hard metal or diamond, wherein dte pins are circumferentially distributed 5 at an angular distance.
  • the pins allow a defined introduction of undercuts in the Bohrlochoberflfiche reach.
  • a provided at a constant angular distance realizes the following advantages:
  • dte pins with respect to a longitudinal axis of the tool can be arranged at an angular distance, the angular distance 30 * to 180 °, preferably 60 ° to 150 °, more preferably 120 ° amounts, for example, at least three pins at an angular distance of 120 ° distributed on the be arranged outside outer surface of the tool head. This can be the
  • the maximum diameter of the tool head is smaller than the nominal diameter of a borehole to be machined.
  • the maximum diameter of the tool head can be defined, for example, by hard metal pins arranged on the convex surface area, which project an enveloping circle whose diameter is smaller than the nominal diameter of the borehole to be machined.
  • the coupling portion is disposed at a first end of a tool shaft and the tool head at an opposite, second end of the tool shaft according to an embodiment of the tool, wherein the tool shaft has a smaller diameter than the tool head.
  • the tool shank is consequently in the radial direction relative to the tool head detached Between the tool shank and the borehole surface a play is formed, so that a free space for the user for the tool guidance is created.
  • the tool shank has, according to a further development of the tool in the axial direction, at least the length of the tool head.
  • the tool is therefore also suitable for machining boreholes in the region of the borehole bottom, wherein the borehole depth corresponds to twice the axial length of the tool head.
  • the axial length of the tool head may be at least nine times the maximum head diameter.
  • the axial length of the tool head at least nine times the nominal diameter of a
  • the tool head 25 can be omitted, since a sufficiently large Rau design is available.
  • the tool head can be distributed over the entire axial length distributed with carbide or diamond pins.
  • the largest diameter of the tool head should be at least 30% larger than the diameter of a tool shaft connecting the tool head and the coupling portion.
  • FIG. 1 shows a first embodiment of a tool according to the invention in a perspective view, a front view and a side view;
  • FIG. 2 shows a second embodiment of an inventive tool in a perspective view, a front view and two side views.
  • FIG. 1 shows a tool 10 for roughening a borehole surface (not shown) in a perspective view, a front view and a side view.
  • the tool 10 has a coupling portion 12 for clamping the tool 10 in a drill (not shown) and a tool head 14 for processing a borehole surface.
  • the tool head 10 14 has an outer circumferential surface 16.
  • cutting means 18 are arranged, which protrude radially relative to the lateral surface 16.
  • the outer circumferential surface 16 has along a tool longitudinal direction a to a crown, which can be seen in side view
  • the lateral surface 16 has a maximum diameter D1, which is arranged centrally with respect to the longitudinal extent of the tool head 14. Starting from the maximum diameter D1, the lateral surface 16 is in the direction of an end face 20 and an opposite end 22 on one side in comparison with the diameter D1 In other words, the outer lateral surface in FIG. 20 is curved outward in a radial direction r.
  • the Schneidmittet provided on the lateral surface 16 include carbide pins 18 which are circumferentially arranged at an angular distance of 120 ° and also distributed axially along the tool longitudinal axis A.
  • the axial length of the tool head 14 is greater than 25 times the maximum diameter D3 of the tool head.
  • the maximum diameter D3 of the tool head 14 is determined by the diameter of the enveloping circles of the hard metal parts 18, which are arranged in the region of the maximum diameter D1 of the lateral surface.
  • the axial length of the tool head is greater than nine times the nominal diameter of the bore to be machined.
  • the coupling portion 12 is disposed at a first end of a tool shank 24 and the tool head 14 at an opposite, second end of the tool shank 24.
  • the tool shank 24 has a smaller diameter than the tool head 14.
  • the axial length of the tool shank 24 substantially corresponds to the axial length of the tool head 14.
  • the tool 10 For roughening a borehole surface (not shown), the tool 10 according to the invention is clamped in a drilling device (not shown). The tool 10 is with the tool head in a borehole (not shown)
  • the nominal diameter of the borehole is preferably greater than the maximum diameter D3 of the tool head 14.
  • the boring device causes a rotation of the tool 10, wherein this rotation is superimposed by the user on a pivoting or stirring movement.
  • the spherical tool head 14 is guided by the user along the borehole surface, so that the
  • leadership of the tool 10 is determined by the shape of the tool head 14. In this way, a uniform Airfrauen the borehole surface can be achieved. Due to the circumferential distribution of the hard metal pins 18, the wear of the tool 10 in the region of the outer lateral surface 16, in particular at the height of the maximum diameter D1, is also reduced.
  • Figure 2 shows a further embodiment of a tool 10, wherein this alternative embodiment is characterized by a modified shape of the coupling portion 12, which is larger in diameter than the shaft diameter.
  • the tool is designed so that the tool head has a maximum diameter that is at least 30% larger than the diameter of the tool shank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (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)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne un outil pour rugosifier la surface d'un trou de forage, comprenant une partie d'accouplement (12) pour la fixation de l'outil (10) dans un dispositif de forage, et une tête d'outil (14) pour modifier la surface du trou de forage, la tête d'outil (14) présentant une surface extérieure (16) sur laquelle sont agencés des moyens de coupe (18). Afin de permettre une rugosification simple et économique de la surface d'un trou de forage, la surface extérieure (16) présente un bombement le long d'une direction longitudinale (A) de l'outil. L'invention concerne en outre un procédé pour rugosifier la surface d'un trou de forage.
EP16787334.8A 2015-09-23 2016-09-19 Outil pour rugosifier la surface d'un trou de forage Withdrawn EP3352935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15186462.6A EP3147056A1 (fr) 2015-09-23 2015-09-23 Outil permettant de rendre rugueux une surface d'alesage
PCT/EP2016/072149 WO2017050688A1 (fr) 2015-09-23 2016-09-19 Outil pour rugosifier la surface d'un trou de forage

Publications (1)

Publication Number Publication Date
EP3352935A1 true EP3352935A1 (fr) 2018-08-01

Family

ID=54199011

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15186462.6A Withdrawn EP3147056A1 (fr) 2015-09-23 2015-09-23 Outil permettant de rendre rugueux une surface d'alesage
EP16787334.8A Withdrawn EP3352935A1 (fr) 2015-09-23 2016-09-19 Outil pour rugosifier la surface d'un trou de forage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP15186462.6A Withdrawn EP3147056A1 (fr) 2015-09-23 2015-09-23 Outil permettant de rendre rugueux une surface d'alesage

Country Status (8)

Country Link
US (1) US20190112876A1 (fr)
EP (2) EP3147056A1 (fr)
JP (1) JP2018530458A (fr)
CN (1) CN108271368A (fr)
AU (1) AU2016328527A1 (fr)
CA (1) CA2998794A1 (fr)
RU (1) RU2018114710A (fr)
WO (1) WO2017050688A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3143462A1 (de) 1981-11-03 1983-05-11 Hawera Probst Gmbh + Co, 7980 Ravensburg Bohrwerkzeug
DE3819650A1 (de) 1988-01-28 1989-12-14 Fischer Artur Werke Gmbh Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
DE19610442A1 (de) * 1996-03-16 1997-09-18 Hilti Ag Bohrwerkzeug
JP3404301B2 (ja) * 1998-11-09 2003-05-06 理研ダイヤモンド工業株式会社 アンカーの施工方法及び切削ビット
JP4477397B2 (ja) * 2004-03-30 2010-06-09 サンコーテクノ株式会社 ドリル工具およびこれを用いた下孔の内周面の切削方法
US20060201670A1 (en) * 2005-03-14 2006-09-14 Stable Services Limited Downhole apparatus
EA015116B1 (ru) * 2006-12-12 2011-06-30 УЭЛЛБОР ЭНЕРДЖИ СОЛЮШНЗ, ЭлЭлСи Улучшенный скважинный скребковый и/или щёточный инструмент для очистки скважины и способы очистки скважины
JP5567929B2 (ja) * 2010-07-30 2014-08-06 前田建設工業株式会社 アンカーの施工方法及び目粗ビット
EP2824215B1 (fr) * 2012-03-06 2019-07-17 Nissan Motor Co., Ltd Procédé de finition d'une surface revêtue par pulvérisation
DE102014202066A1 (de) * 2014-02-05 2015-08-06 Schaeffler Technologies AG & Co. KG Bohrvorrichtung und Verfahren zum Einbringen einer Bohrung

Also Published As

Publication number Publication date
WO2017050688A1 (fr) 2017-03-30
RU2018114710A (ru) 2019-10-23
US20190112876A1 (en) 2019-04-18
CN108271368A (zh) 2018-07-10
JP2018530458A (ja) 2018-10-18
CA2998794A1 (fr) 2017-03-30
AU2016328527A1 (en) 2018-03-29
EP3147056A1 (fr) 2017-03-29
RU2018114710A3 (fr) 2020-02-13

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