EP0352546A2 - Trépan carottier - Google Patents

Trépan carottier Download PDF

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Publication number
EP0352546A2
EP0352546A2 EP89112718A EP89112718A EP0352546A2 EP 0352546 A2 EP0352546 A2 EP 0352546A2 EP 89112718 A EP89112718 A EP 89112718A EP 89112718 A EP89112718 A EP 89112718A EP 0352546 A2 EP0352546 A2 EP 0352546A2
Authority
EP
European Patent Office
Prior art keywords
carrier body
cutting segments
drilling tool
stops
hollow 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.)
Withdrawn
Application number
EP89112718A
Other languages
German (de)
English (en)
Other versions
EP0352546A3 (fr
Inventor
Eugen Dr. Magyari
Walter Ritt
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 EP0352546A2 publication Critical patent/EP0352546A2/fr
Publication of EP0352546A3 publication Critical patent/EP0352546A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • 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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • Hollow drilling tools of the type mentioned, for example from DE-OS 3 408 093, are used in particular for producing larger diameter bores in concrete, masonry, rock and the like.
  • the cutting segments contain abrasive cutting bodies embedded in a matrix, in particular synthetically produced diamonds.
  • the cutting segments are preferably connected to the carrier body by soldering, which requires precise alignment of the cutting segments with respect to the carrier body, which leads to increased expenditure in the manufacture of the drilling tools.
  • the invention has for its object to provide a hollow drilling tool that is characterized by simplified manufacture and insensitivity to damage, in particular in connection with the connection of the cutting segments to the carrier body.
  • the cutting segments have stops on their narrow sides, which interact radially with at least some of the wall parts delimiting the receiving openings of the carrier body.
  • the stops on the narrow sides position the cutting segments in the radial direction when they are inserted into the carrier body.
  • the previously required radial alignment of the cutting segments after insertion into the carrier body is thus made considerably easier or can be done completely eliminated.
  • the stops also increase the contact area of the cutting segments with the carrier body, which is particularly advantageous when the cutting segments are subsequently soldered into the carrier body.
  • the stops are expediently arranged on the narrow sides of the cutting segments running parallel to the longitudinal axis of the carrier body, which leads to the advantage of an additional alignment in the axial direction and is particularly important in the case of a large axial height of the cutting segments.
  • a further advantageous solution consists in that the stops are arranged on the rear narrow side of the cutting segments which runs perpendicular to the longitudinal axis of the carrier body. As a result, the cutting segments are supported on the carrier body in the radial direction over part of the circumference. Due to the stops arranged on the narrow side running perpendicular to the longitudinal axis of the carrier body, the cutting segments are firmly connected to the carrier body at their rear end opposite to the feed direction.
  • stops of the cutting segments overlap the outside of at least a part of the wall parts of the carrier body that delimit the receiving openings.
  • stops of the cutting segments overlap the inside of at least part of the wall parts of the carrier body that delimit the receiving opening.
  • stops of the cutting segments are arranged alternately, i.e. if the outside and inside of the carrier body overlap alternately, it is possible to insert the cutting segments into the receiving openings of the carrier body in a position slightly rotated about their longitudinal axis and then pivot them back into their final position.
  • the groove expediently has a U-shaped cross section.
  • the U-shaped cross section of the groove can be square or rounded.
  • the groove is preferably rounded in the bottom, which leads to a lower notch effect.
  • the width of the groove advantageously corresponds essentially to the wall thickness of the carrier body.
  • a width of the groove corresponding to the wall thickness of the carrier body enables the cutting segments to be guided precisely with respect to the carrier body and, in addition, a good connection between the carrier body and the cutting segments is achieved in the case of additional connection, for example by soldering.
  • the depth of the groove suitably corresponds essentially to the width of the groove.
  • a depth of the groove corresponding to the width of the groove enables good guidance of the cutting segments in the receiving openings of the carrier body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
EP19890112718 1988-07-25 1989-07-12 Trépan carottier Withdrawn EP0352546A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883825220 DE3825220A1 (de) 1988-07-25 1988-07-25 Hohlbohrwerkzeug
DE3825220 1988-07-25

Publications (2)

Publication Number Publication Date
EP0352546A2 true EP0352546A2 (fr) 1990-01-31
EP0352546A3 EP0352546A3 (fr) 1991-03-13

Family

ID=6359494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890112718 Withdrawn EP0352546A3 (fr) 1988-07-25 1989-07-12 Trépan carottier

Country Status (3)

Country Link
EP (1) EP0352546A3 (fr)
JP (1) JPH0267105A (fr)
DE (1) DE3825220A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2423538A (en) * 2005-02-24 2006-08-30 Marcrist Internat Ltd Core drilling segments with side protection
EP1841944A4 (fr) * 2005-01-18 2013-01-23 Fordia Inc Groupe Meche pour percer un trou
US9689210B2 (en) 2012-11-21 2017-06-27 Diamond Products, Limited Diamond mining core drill bit and methods of making thereof
US9701042B2 (en) 2013-07-03 2017-07-11 Diamond Products, Limited Method of making diamond mining core drill bit and reamer
CN108360975A (zh) * 2018-04-02 2018-08-03 镇江市建科工程质量检测中心有限公司 一种适用于沥青路面的取芯钻及取芯机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8915905U1 (de) * 1989-10-11 1992-01-09 Fromme, Theo, Dipl.-Ing., 5407 Boppard Bohrkrone mit umfangsverteilt angeordneten Zähnen für Bohrrohre
DE4242909C2 (de) * 1992-12-18 2002-10-24 Hilti Ag Hohlbohrkrone mit Schneiden

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE429306A (fr) *
DE537686C (de) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Drehbohrkrone mit nachstellbaren Messern
US2326908A (en) * 1942-05-29 1943-08-17 Jr Edward B Williams Drill bit
FR1417359A (fr) * 1964-10-03 1965-11-12 Benoto Sa Trousse coupante pour tube de forage
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
FR2097340A5 (fr) * 1970-07-02 1972-03-03 Allard Pierre
US3999620A (en) * 1975-05-30 1976-12-28 Watson, Incorporated Core barrel
US4208154A (en) * 1978-03-21 1980-06-17 Gundy William P Core drill
DE3408093A1 (de) * 1984-03-05 1985-09-05 Hilti Ag, Schaan Bohrkrone

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1841944A4 (fr) * 2005-01-18 2013-01-23 Fordia Inc Groupe Meche pour percer un trou
GB2423538A (en) * 2005-02-24 2006-08-30 Marcrist Internat Ltd Core drilling segments with side protection
US9689210B2 (en) 2012-11-21 2017-06-27 Diamond Products, Limited Diamond mining core drill bit and methods of making thereof
US9701042B2 (en) 2013-07-03 2017-07-11 Diamond Products, Limited Method of making diamond mining core drill bit and reamer
CN108360975A (zh) * 2018-04-02 2018-08-03 镇江市建科工程质量检测中心有限公司 一种适用于沥青路面的取芯钻及取芯机
CN108360975B (zh) * 2018-04-02 2024-04-09 镇江市建设工程质量检测中心有限公司 一种适用于沥青路面的取芯钻及取芯机

Also Published As

Publication number Publication date
JPH0267105A (ja) 1990-03-07
DE3825220A1 (de) 1990-02-08
EP0352546A3 (fr) 1991-03-13

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