EP0352546A3 - Core drill bit - Google Patents

Core drill bit Download PDF

Info

Publication number
EP0352546A3
EP0352546A3 EP19890112718 EP89112718A EP0352546A3 EP 0352546 A3 EP0352546 A3 EP 0352546A3 EP 19890112718 EP19890112718 EP 19890112718 EP 89112718 A EP89112718 A EP 89112718A EP 0352546 A3 EP0352546 A3 EP 0352546A3
Authority
EP
European Patent Office
Prior art keywords
cutting segments
drill bit
carrier body
core drill
receiving openings
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Withdrawn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
EP19890112718
Other languages
German (de)
French (fr)
Other versions
EP0352546A2 (en
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/en
Publication of EP0352546A3 publication Critical patent/EP0352546A3/en
Withdrawn legal-status Critical Current

Links

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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

Das Hohlbohrwerkzeug besteht im wesentlichen aus einem rohr­ förmigen Trägerkörper (1) und in U-förmigen Aufnahmeöffnungen (1d) am vorderen Ende (1a) des Trägerkörpers (1) angeordneten Schneidsegmenten (2). An wenigstens einem Teil der die Auf­ nahmeöffnungen (1d) begrenzenden Wandungsteile des Trägerkör­ pers (1) stützen sich die Schneidsegmente (2) über Anschläge (2h, 2i) radial ab. Zur Sicherung der Schneidsegmente (2) am Trägerkörper (1) können die Schneidsegmente (2) zusätzlich durch Schweissen, Löten oder Sintern mit dem Trägerkörper (1) verbunden werden. The hollow drilling tool consists essentially of a tube shaped support body (1) and in U-shaped receiving openings (1d) arranged at the front end (1a) of the carrier body (1) Cutting segments (2). At least part of the on receiving openings (1d) delimiting wall parts of the carrier body pers (1) the cutting segments (2) are supported by stops (2h, 2i) radially. To secure the cutting segments (2) on The cutting segments (2) can additionally support the body (1) by welding, soldering or sintering with the carrier body (1) be connected.

EP19890112718 1988-07-25 1989-07-12 Core drill bit Withdrawn EP0352546A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883825220 DE3825220A1 (en) 1988-07-25 1988-07-25 HOLLOW DRILLING TOOL
DE3825220 1988-07-25

Publications (2)

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

Family

ID=6359494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890112718 Withdrawn EP0352546A3 (en) 1988-07-25 1989-07-12 Core drill bit

Country Status (3)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933867C2 (en) * 1989-10-11 1995-08-17 Bauer Spezialtiefbau Drill bit with teeth arranged around the circumference for drill pipes
DE4242909C2 (en) * 1992-12-18 2002-10-24 Hilti Ag Hollow core bit with cutting edges
AU2006207842B2 (en) * 2005-01-18 2010-11-25 Groupe Fordia Inc Bit for drilling a hole
GB2423538A (en) * 2005-02-24 2006-08-30 Marcrist Internat Ltd Core drilling segments with side protection
CA2825729C (en) 2012-11-21 2018-05-22 Diamond Products, Limited Diamond mining core drill bit and methods of making thereof
CA2854691C (en) 2013-07-03 2017-10-31 Karl H. Moller Method of making diamond mining core drill bit and reamer
CN108360975B (en) * 2018-04-02 2024-04-09 镇江市建设工程质量检测中心有限公司 Core drill and core machine suitable for bituminous paving

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE429306A (en) *
DE537686C (en) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Rotary drill bit with adjustable knives
US2326908A (en) * 1942-05-29 1943-08-17 Jr Edward B Williams Drill bit
DE1254102B (en) * 1964-10-03 1967-11-16 Benoto Sa Cutting shoe for drill pipes
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
FR2097340A5 (en) * 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 (en) * 1984-03-05 1985-09-05 Hilti Ag, Schaan Drill bit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE429306A (en) *
DE537686C (en) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Rotary drill bit with adjustable knives
US2326908A (en) * 1942-05-29 1943-08-17 Jr Edward B Williams Drill bit
DE1254102B (en) * 1964-10-03 1967-11-16 Benoto Sa Cutting shoe for drill pipes
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
FR2097340A5 (en) * 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 (en) * 1984-03-05 1985-09-05 Hilti Ag, Schaan Drill bit

Also Published As

Publication number Publication date
DE3825220A1 (en) 1990-02-08
JPH0267105A (en) 1990-03-07
EP0352546A2 (en) 1990-01-31

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