EP0846537A2 - Outil diamanté - Google Patents

Outil diamanté Download PDF

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Publication number
EP0846537A2
EP0846537A2 EP97121352A EP97121352A EP0846537A2 EP 0846537 A2 EP0846537 A2 EP 0846537A2 EP 97121352 A EP97121352 A EP 97121352A EP 97121352 A EP97121352 A EP 97121352A EP 0846537 A2 EP0846537 A2 EP 0846537A2
Authority
EP
European Patent Office
Prior art keywords
cutting
segments
cutting segments
tool according
segment carrier
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Withdrawn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
EP97121352A
Other languages
German (de)
English (en)
Other versions
EP0846537A3 (fr
Inventor
Ofra Struhalla
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0846537A2 publication Critical patent/EP0846537A2/fr
Publication of EP0846537A3 publication Critical patent/EP0846537A3/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Withdrawn legal-status Critical Current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
    • 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
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades

Definitions

  • the invention relates to a tool for separating hard and brittle materials such as Stone, concrete or asphalt, with a steel cutting segment support, one Recording for rotationally fixed attachment to a drive shaft, and on the Cutting segments are attached, which consist of a sintered material in the Diamonds are embedded and the end faces form the cut surfaces, the Cutting segments preferably each with its base on a parallel one Holding surface of the cutting segment carrier are soldered.
  • the cutting segment support is a steel tube, often also called core tube, on one end face at regular angular intervals the cutting segments are arranged and on the other end face the receptacle is arranged for connection to the drive shaft.
  • a diamond core bit is known for example from DE 36 00 189 C2.
  • the Cutting segments have a rhombohedral shape, the back with a triangular
  • the prism is lined with a diamond-free material.
  • the front surface of the rhombohedral Segment is slightly inclined to the longitudinal direction of the core tube.
  • the cut surface is shortened compared to solid, rectangular cutting segments.
  • the tool can also be designed as a diamond saw blade.
  • the cutting segments at regular intervals on the outer peripheral surface a steel disc, which forms the cutting segment support.
  • Such a thing Tools are disclosed, for example, in EP 0 590 408 A1.
  • the sintered material (also called bond) is usually a sintered metal, for example a cobalt, copper, or tungsten alloy. Both synthetic natural diamonds can be used. The grain sizes of the diamonds are usually between 30/40 mesh and 50/60 mesh.
  • the object of the invention is to provide a diamond tool in which the thermal Stress on the cutting segments is reduced to a minimum, which is simple and is inexpensive to manufacture and enables high cutting performance to be achieved.
  • all cutting surfaces of the cutting segments are around a small one Angle to the cutting direction, i.e. to the surface of the material to be processed inclined so that between the front edge of the cutting segment in the cutting direction and there is a gap in the surface of the material to be processed and the cutting segment only in the area of its rear edge in contact with the above Surface stands.
  • This accumulation of the cut surfaces is by means of the cutting process diamond-containing cutting segments are particularly advantageous.
  • the invention Tools in their outer shape a saw or milling tool with discrete Saw or milling teeth are similar, the cutting process is more like a grinding process, i.e. to compare with a cutting process with an undefined cutting edge.
  • the brittle Material is made only from those protruding from the surface of the cutting segments Edges of the diamonds machined. After a certain time they break Diamonds out of the sintered material and set new diamonds to carry out machining free.
  • the advantageous cooling is additionally supported by the fact that the accumulating Cutting area of the cutting segment on the water present in the cutting area runs up and thereby the water in the contact area between the cut surface of the Cutting segment and the material to be machined. In this way it is ensured that in the direct machining area there is sufficient cooling and rinsing liquid is present, which prevents excessive heating of the cutting segments and ensures the removal of the machined material.
  • the length of each cutting segment is approximately 1.5 to 2.5 times that Cutting segment height.
  • the width of the cutting segments corresponds approximately to the 0.1 to 0.3 times the length of the cutting segments.
  • the length of the cutting segments is usually around 20 mm.
  • the segment carrier realizes the base areas of the cutting segments and the holding surfaces of the Segment carrier run parallel to the direction of the cutting movement.
  • the core bit then lies in a radial plane of the core tube.
  • the course of the holding surfaces essentially corresponds the course of the peripheral surface of the disc-shaped segment carrier.
  • the segments in this case have a wedge shape that is easy to implement in the sintering process.
  • the base area of the cutting segments can be parallel to their Cutting surface runs. In this case, they must be parallel to the base areas horizontal support surfaces of the segment carriers are inclined.
  • the holding surfaces In the case of the drill bit the holding surfaces must be sawtooth-shaped into the end face of the core tube be. In the case of the diamond saw blade, the holding surfaces are sawtooth-like in the outer one Circumferential surface of the segment carrier incorporated.
  • This embodiment has the Advantage that the cutting force acting in the cutting direction is perpendicular to the holding surface has extending component, which is supported as a compressive force against the holding surface. The cutting force on each cutting segment therefore does not have to be exclusively from the soldering are included, but is partially based directly against the Holding surface.
  • the base area of the cutting segments can be according to the Curvature of the outer peripheral surface of the steel disc can be curved.
  • flat sections can be worked into the outer circumferential surface of the steel disk on which straight base areas of the cutting segments are soldered.
  • the diamond drill bit shown in Fig. 1 comprises a core tube 1, on the upper end face a receptacle 2 arranged for attachment to a drive shaft is. Twelve cutting segments 3 are arranged on the lower end face.
  • the cutting segments 3 have a rectangular plan in side view and are in Top view curved according to the curvature of the core tube 1. they consist of a sintered metal, for example a cobalt alloy, set in the diamond are.
  • the grain sizes of the diamonds are usually between 30/40 mesh and 50/60 mesh.
  • the free cutting surface 4 of the cutting segments 3 is at an angle ⁇ of approximately 20 ° to the radial plane of the core tube 1, in which the cutting directions S of the cutting segments lies, inclined.
  • the rear edge 5 of the cutting surface 4 in the cutting direction S lies furthest forward in the axial direction and forms the new cutting segments 3 Contact line with the material to be processed.
  • the base surface 6 of the cutting segments 3 opposite the cut surface 4 is each on one of the sawtooth-like worked into the front end face of the core tube 1 Holding surfaces 7 soldered with a hard solder 8, in particular silver solder. Also the in the cutting direction, front surface 9 of each cutting segment 3 is on a support surface of the core tube 1 soldered.
  • other fastening methods are possible, e.g. Laser welding, whereby the material of the segment carrier is melted and the connection can absorb considerably higher forces than soldering.
  • each cutting segment is preferably approximately 20 mm, the width approximately 4 mm and the height about 10 mm.
  • the core tube 1 'of this drill bit has a smooth, circular shape End face on which wedge-shaped cutting segments 3 'are soldered.
  • the cut surfaces 4 'of these cutting segments 3' are also at an angle ⁇ of 20 ° to the cutting direction S in the radial plane of the core tube 1 '.
  • the processing of the free end face of the Core tube 1 ' is that the braze 8 the total cutting forces Must record, since there is no support surface against the cutting direction S. In As a rule, the brazing alloy 8 is sufficiently strong to absorb these forces.
  • the Production of the wedge-shaped cutting segments 3 'in the sintering process has the advantage that compared to the cutting segments 3 with a rectangular cross section both sintered material as well as diamonds can be saved.
  • FIGS. 9 to 11 show a diamond saw blade with cutting segments 13 with a rectangular one Cross-section.
  • the cutting segments 13 are on a steel plate 11, the Cutting segment carrier forms, attached.
  • the Recording 12 arranged for a drive shaft.
  • the cut surface 14 is the Cutting segments 13 through an angle ⁇ of approximately 20 ° to the direction S of the cutting movement inclined, which runs in the circumferential direction of the diamond saw blade.
  • the steel disk 11 has a sawtooth-like shape Cutouts.
  • the front surfaces 19 of the cutting segments 13 are soldered to complementary surfaces of the steel disc 11.
  • the base surface 16 'of the cutting segments 13' corresponds to the peripheral surface the steel disc 11, which forms the holding surfaces 17 ', curved.
  • the cutting segments 13 ' are wedge-shaped, as in the diamond drill bit from FIGS. 6 to 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP97121352A 1996-12-05 1997-12-04 Outil diamanté Withdrawn EP0846537A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996150480 DE19650480A1 (de) 1996-12-05 1996-12-05 Diamant-Werkzeug
DE19650480 1996-12-05

Publications (2)

Publication Number Publication Date
EP0846537A2 true EP0846537A2 (fr) 1998-06-10
EP0846537A3 EP0846537A3 (fr) 2002-01-09

Family

ID=7813739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121352A Withdrawn EP0846537A3 (fr) 1996-12-05 1997-12-04 Outil diamanté

Country Status (2)

Country Link
EP (1) EP0846537A3 (fr)
DE (1) DE19650480A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001056745A1 (fr) * 2000-02-04 2001-08-09 Siegfried Gölz Gmbh & Co. Segments lies a du metal fritte, ayant une action abrasive, destines a des outils
WO2004022297A1 (fr) * 2002-09-05 2004-03-18 Diamant Boart International, Société Anonyme Element de coupe et outil d'usinage pourvu d'un tel element
EP1695781A1 (fr) * 2005-02-24 2006-08-30 Marcrist International Limited Outil de foreuse à pointes de diamants
DE102011084445A1 (de) * 2011-10-13 2013-04-18 Robert Bosch Gmbh Bohrkrone
DE102011084436A1 (de) * 2011-10-13 2013-04-18 Robert Bosch Gmbh Hammerbohrkrone

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29903946U1 (de) 1999-03-04 1999-06-02 RUKO GmbH Präzisionswerkzeuge, 71088 Holzgerlingen Kernbohrer mit verbessertem Schneidverhalten
DE20004772U1 (de) 2000-03-15 2000-05-25 MagCode AG, 89520 Heidenheim Vorrichtung zum Einbringen von Bohrungen
DE202007017299U1 (de) * 2007-12-12 2009-04-23 Drebo Werkzeugfabrik Gmbh Bohrer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818233A (en) * 1954-05-03 1957-12-31 Jr Edward B Williams Drill bit
GB885794A (en) * 1959-04-20 1961-12-28 Christensen Diamond Prod Co Abrasive cutting devices
US4667755A (en) * 1984-02-29 1987-05-26 Hawera Probst Gmbh & Co. Drill bit having hollow cylindrical body and a plurality of PCD cutting elements
US5197453A (en) * 1992-08-28 1993-03-30 Sanders Saws, Inc. Two-tier groove cutting circular saw blade with multiple core assembly
JPH05329833A (ja) * 1992-05-29 1993-12-14 Riken Daiyamondo Kogyo Kk ダイヤモンド工具
EP0590408A1 (fr) * 1992-09-29 1994-04-06 Ledermann GmbH Outil pour le fraisage de mortaises et de rainures

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1044441A1 (ru) * 1980-12-29 1983-09-30 Предприятие П/Я В-2190 Дискова пила
DE3408092A1 (de) * 1984-03-05 1985-09-19 Hilti Ag, Schaan Hohlbohrer
DE3408093A1 (de) * 1984-03-05 1985-09-05 Hilti Ag, Schaan Bohrkrone
SU1209458A2 (ru) * 1984-11-10 1986-02-07 Одесский Инженерно-Строительный Институт Отрезной круг
DE3600189A1 (de) * 1986-01-16 1987-07-16 Kazachskij Politekhn I Im W I Diamantbohrkrone
SU1541038A1 (ru) * 1988-01-13 1990-02-07 Ереванский Завод Искусственных Алмазов И Алмазных Инструментов Алмазный отрезной сегментный круг
JPH03161278A (ja) * 1989-11-15 1991-07-11 Asahi Daiyamondo Kogyo Kk ダイヤモンドソーブレード
DE9106283U1 (de) * 1991-05-22 1991-07-25 Koken, Wilhelm, 8999 Röthenbach Diamant-Segment für die Herstellung von Kreissägeblättern zum Sägen von Natur- und Kunststeinen
US5281060A (en) * 1992-12-16 1994-01-25 Jancy Engineering Company Annular hole cutter
DE4424093C2 (de) * 1993-07-13 2000-03-30 Karlheinz Dietel Segmenttrennschleifscheibe
DE4420999C2 (de) * 1994-06-17 2003-10-09 Hilti Ag Hohlbohrwerkzeug mit auswechselbarem Zentrierbohrer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818233A (en) * 1954-05-03 1957-12-31 Jr Edward B Williams Drill bit
GB885794A (en) * 1959-04-20 1961-12-28 Christensen Diamond Prod Co Abrasive cutting devices
US4667755A (en) * 1984-02-29 1987-05-26 Hawera Probst Gmbh & Co. Drill bit having hollow cylindrical body and a plurality of PCD cutting elements
JPH05329833A (ja) * 1992-05-29 1993-12-14 Riken Daiyamondo Kogyo Kk ダイヤモンド工具
US5197453A (en) * 1992-08-28 1993-03-30 Sanders Saws, Inc. Two-tier groove cutting circular saw blade with multiple core assembly
EP0590408A1 (fr) * 1992-09-29 1994-04-06 Ledermann GmbH Outil pour le fraisage de mortaises et de rainures

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 199134 Derwent Publications Ltd., London, GB; Class L02, AN 1991-248620 XP002183066 -& JP 03 161278 A (ASAHI DIAMOND KOGYO), 11. Juli 1991 (1991-07-11) *
DATABASE WPI Section PQ, Week 198424 Derwent Publications Ltd., London, GB; Class P54, AN 1984-151023 XP002183067 -& SU 1 044 441 A (CHEPELEVSKAYA ZH V), 30. September 1983 (1983-09-30) *
DATABASE WPI Section PQ, Week 198639 Derwent Publications Ltd., London, GB; Class P64, AN 1986-256933 XP002183064 -& SU 1 209 458 A (ODESS ENG-CONS INST), 7. Februar 1986 (1986-02-07) *
DATABASE WPI Section PQ, Week 199036 Derwent Publications Ltd., London, GB; Class P61, AN 1990-273527 XP002183065 -& SU 1 541 038 A (EREV DIAMOND TOOL), 7. Februar 1990 (1990-02-07) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 151 (M-1576), 14. März 1994 (1994-03-14) -& JP 05 329833 A (RIKEN DAIYAMONDO KOGYO KK), 14. Dezember 1993 (1993-12-14) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001056745A1 (fr) * 2000-02-04 2001-08-09 Siegfried Gölz Gmbh & Co. Segments lies a du metal fritte, ayant une action abrasive, destines a des outils
WO2004022297A1 (fr) * 2002-09-05 2004-03-18 Diamant Boart International, Société Anonyme Element de coupe et outil d'usinage pourvu d'un tel element
BE1015094A3 (fr) * 2002-09-05 2004-10-05 Diamant Boart International Sa Element de coupe et outil d'usinage pourvu d'un tel element.
EP1695781A1 (fr) * 2005-02-24 2006-08-30 Marcrist International Limited Outil de foreuse à pointes de diamants
DE102011084445A1 (de) * 2011-10-13 2013-04-18 Robert Bosch Gmbh Bohrkrone
DE102011084436A1 (de) * 2011-10-13 2013-04-18 Robert Bosch Gmbh Hammerbohrkrone
DE102011084436B4 (de) * 2011-10-13 2015-10-01 Robert Bosch Gmbh Hammerbohrkrone

Also Published As

Publication number Publication date
DE19650480A1 (de) 1998-06-10
EP0846537A3 (fr) 2002-01-09

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