EP0857552B1 - Steinbearbeitungswerkzeug mit verbessertem Anschnittverhalten - Google Patents
Steinbearbeitungswerkzeug mit verbessertem Anschnittverhalten Download PDFInfo
- Publication number
- EP0857552B1 EP0857552B1 EP98200161A EP98200161A EP0857552B1 EP 0857552 B1 EP0857552 B1 EP 0857552B1 EP 98200161 A EP98200161 A EP 98200161A EP 98200161 A EP98200161 A EP 98200161A EP 0857552 B1 EP0857552 B1 EP 0857552B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machining tool
- abrasive
- stone machining
- diamond
- cut zone
- 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
Links
- 239000004575 stone Substances 0.000 title claims abstract description 26
- 238000003754 machining Methods 0.000 title claims description 9
- 239000010432 diamond Substances 0.000 claims abstract description 20
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 6
- 239000000945 filler Substances 0.000 abstract description 5
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 239000010431 corundum Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 239000004571 lime Substances 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract description 2
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000288113 Gallirallus australis Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
-
- 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
Definitions
- the invention relates to a stone processing tool with sintered metal-bound, preferably multi-layered diamond containing cutting material assembled abrasive elements, for example for core drilling.
- a stone processing tool with sintered metal-bound, preferably multi-layered diamond containing cutting material assembled abrasive elements, for example for core drilling.
- Such a tool is known from EP 156 762 A.
- EP 0 15 6762 B1 describes only a gradual achievement in this regard the full sleekness over the entire contact area between the roof segment and workpiece and is satisfied with the rapid formation of the linear Touch to ensure tool guidance or centering it hollow drill on the stone material.
- US 4 681 174 A discloses a stone working tool in which the diamond-containing one Matrix of the drill segments is parallelepiped-shaped and obliquely to the rear is anomalous against the direction of rotation of the drill.
- the parallelepiped must be supported against tipping, which is why it is seen in the direction of rotation of the drill on his Back surface has a support wedge.
- the diamond-containing parallelepiped and the support wedge are attached to a welding zone and the welding zone in turn is on the steel beam of the stone processing tool attached.
- the purpose for the proposed inclination is diamond-containing matrix of the drill segments and the enlarged, trapezoidal shape of the gaps the uniformity of the diamond wear during the total running time of the drill.
- firmly degradable, abrasive material proposed which is a for the entire life of the Stone processing tool intended even self-sharpening based on the end edge of the crown in the bottom of the borehole.
- This permanent self-sharpening effect should result from the coarser breakdown components that partly come from the wear volume flow from the support wedge.
- the fine ones Breakdown components are said to be enlarged due to the proposed trapezoidal Gaps can escape more easily.
- This object is achieved according to the invention by a tool according to claim 1.
- This different structure can be achieved through filling measures in the sintered metal bond the gate zone with the grinding technology itself with high-performance abrasives known fillers such as tungsten disulfide, tungsten carbide, Molybdenum disulfide, coal grit, corundum, silicon carbide, lime, glass, by sleeker or more fragile diamond grain, by reducing the cutting grain concentration and / or through different, softer-tuned binding compositions can be achieved.
- the combination of 2 or more measures is favorable, the difference in construction and thus wear in accordance with the invention the regular main part and the cut zone of the abrasive elements bring about.
- Fig. 1 shows an embodiment of the invention in the form of a hollow drill with sintered metal Abrasive elements.
- the abrasive elements (1) are as roof segments executed.
- the gate zone (3) follows the roof-shaped contour of the Abrasive element (1).
- the thickness of the gate zone (3) has been shown in tests proved to be cheapest if they were about the average grain diameter of the in the Gate zone (3) corresponds to the diamond core (5) used.
- the abrasive elements (1) are on the carrier body by soldering, welding or sintering (6) of the tool attached.
- Fig. 2 shows a metallurgical cut, made in the plane according to Cut (7) of an abrasive element (1).
- the gate zone (3) is in the sense the invention adjusted more wear by adding copper-tin-bronze with 92 weight percent copper and 8 weight percent tin as a percentage of 11.5 volume percent for pure cobalt binding according to regular part (4).
- the gate zone (3) with molybdenum disulfide in a percentage of 3.8 volume percent, with an average grain size of 3.5 my to achieve the provided drilling properties according to the invention.
- FIGS. 3 and 4 each represent a graphical test report with a comparison of an improved stone processing tool according to the invention and a stone processing tool manufactured according to the prior art in the following.
- Fig. 3 Concrete with quartz aggregates
- Fig. 4 Concrete with quartz aggregates Reinforcement share 0.8 percent by volume Operating conditions vertical holes, each 35 cm deep
- a gate zone (3) now constitutes a Possibility available, optimal cutting properties from the start to bring about hitherto unknown dimensions.
- the Layer thickness of the gate zone corresponding to 0.3 to 2 times the average diamond grain size the Diamantkom is quickly exposed, but in the high-strength Integration through the binding of the regular part (4) is still statistically considered kept in sufficient numbers. This is the case when encountering the most difficult machining conditions prepared the stone processing tool from the start and there are the cutting edges of the diamond grains with their natural sharpness continuously available, so that the mentioned loss of cutting edge from the beginning are avoidable.
- Fig. 4 shows the different feed speeds with an inventive Hollow drill (11) and with a standard hollow drill (10) Reinforced concrete in the area of steel reinforcement.
- the drilling with the invention with an unsharpened subscription zone (3) equipped hollow drill initially took place at a reduced feed rate (11) the feed rate (10) with a sharpened standard hollow drill. After about 0.5 m of drilling distance, a reversal took place in the experimental example according to FIG. 4 the feed rate values up to the end of the drilling test stopped after 2.8 m drilling.
- Fig. 3 shows in principle similar course of the experiment as shown in Fig. 4, only with slightly less difference between the feed speed achievable according to the invention (9) and standard feed rate (8) because of the concrete no steel reinforcement contained.
- the idea of the invention is not limited to that described above Embodiment, but also extends to embodiments not shown of stone working tools.
- the benefit of the invention can always get particularly with such stone working tools if the proportion of the contact area between stone working tool and workpiece on the total working surface of the abrasive stone processing tool is high, for example when deep-cutting with circular saws, for milling, hollow drilling, frame saws and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Description
Naßbohren | |
Werkzeug | 152 x 400 x 1 1/4" Kobaltbindung |
24 - 4 - 8,5 | |
Maschine | Bohrständer HS CY-S / Bohrmotor Weka DK 22 |
P = 2,3 kW | |
n = 320 min-1 | |
vs = 2,5 m/s | |
Material | Fig. 3: Beton mit Quarzzuschlägen |
Fig. 4: Beton mit Quarzzuschlägen | |
Armierungsanteil 0,8 Volumsprozent | |
Einsatzbedingungen | vertikale Bohrungen zu je 35 cm Tiefe |
- 1
- Abrasivelement
- 2
- Bohrrichtung
- 3
- Anschnittzone
- 4
- regulärer Teil
- 5
- Diamantschneidkom
- 6
- Trägerkörper
- 7
- Schnittführung
- 8
- Vorschubgeschwindigkeit Standard
- 9
- Vorschubgeschwindigkeit erfindungsgemäß
- 10
- Vorschubgeschwindigkeit Standard
- 11
- Vorschubgeschwindigkeit erfindungsgemäß
Claims (6)
- Steinbearbeitungswerkzeug mit sintermetallgebundenen, vorzugsweise Diamant als Schneidstoff enthaltenden, mehrschichtig aufgebauten Abrasivelementen (1), beispielsweise zum Kernbohren, gekennzeichnet dadurch, daß die Abrasivelemente (1) des Steinbearbeitungswerkzeugs in Vorschubrichtung (2) gesehen eine an der Außenseite der Abrasivelemente ausgebildete Anschnittzone (3) mit unterschiedlicher Zusammensetzung und erhöhtem Verschleiß gegenüber dem regulären Teil (4) der Abrasivelemente (1) aufweisen.
- Steinbearbeitungswerkzeug nach Anspruch 1, gekennzeichnet dadurch, daß die Bindung der Anschnittzone (3) eine geringere Bindungshärte und/oder einen geringeren Verschleißwiderstand aufweist als die Bindung des regulären Teils (4) des Abrasivelements (1).
- Steinbearbeitungswerkzeug nach Anspruch 1, gekennzeichnet dadurch, daß die Anschnittzone (3) brüchigeres, leichter verschleißendes Diamantschneidkorn als der reguläre Teil (4) des Abrasivelements (1) enthält.
- Steinbearbeitungswerkzeug nach Anspruch 1, gekennzeichnet dadurch, daß die Anschnittzone (3) eine geringere Konzentration an Diamantschneidkorn enthält als der reguläre Teil (4) des Abrasivelements (1).
- Steinbearbeitungswerkzeug nach Anspruch 4, gekennzeichnet dadurch, daß die Diamantschneidkornkonzentration in der Anschnittzone (3) Null ist.
- Steinbearbeitungswerkzeug nach einem der Ansprüche 1 bis 5, gekennzeichnet dadurch, daß die Schichtdicke der Anschnittzone (3) in Abhängigkeit von der mittleren Diamantkorngröße D des regulären Teils (4) ausgeführt ist und 0,3 bis 1,5 mal D beträgt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT10997 | 1997-01-27 | ||
AT109/97 | 1997-01-27 | ||
AT10997 | 1997-01-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0857552A2 EP0857552A2 (de) | 1998-08-12 |
EP0857552A3 EP0857552A3 (de) | 2000-02-09 |
EP0857552B1 true EP0857552B1 (de) | 2000-10-25 |
Family
ID=3481760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98200161A Expired - Lifetime EP0857552B1 (de) | 1997-01-27 | 1998-01-22 | Steinbearbeitungswerkzeug mit verbessertem Anschnittverhalten |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0857552B1 (de) |
AT (1) | ATE197133T1 (de) |
DE (1) | DE59800309D1 (de) |
ES (1) | ES2154072T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373997B2 (en) | 2005-02-18 | 2008-05-20 | Smith International, Inc. | Layered hardfacing, durable hardfacing for drill bits |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10005064A1 (de) | 2000-02-04 | 2001-08-23 | Siegfried Goelz Gmbh & Co | Sintermetallgebundene abrasiv wirkende Segmente für Werkzeuge |
KR100531499B1 (ko) * | 2002-02-08 | 2005-11-28 | 이화다이아몬드공업 주식회사 | 다이아몬드 공구용 절삭팁 및 다이아몬드 공구 |
AT505054B1 (de) | 2007-04-13 | 2010-01-15 | Swarovski Tyrolit Schleif | Hohlbohrer |
GB201507110D0 (en) | 2015-04-27 | 2015-06-10 | Element Six Ltd And Element Six Abrasives S A | Sintered polycrystalline body |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3408092A1 (de) * | 1984-03-05 | 1985-09-19 | Hilti Ag, Schaan | Hohlbohrer |
AU577958B2 (en) * | 1985-08-22 | 1988-10-06 | De Beers Industrial Diamond Division (Proprietary) Limited | Abrasive compact |
DE3600189A1 (de) * | 1986-01-16 | 1987-07-16 | Kazachskij Politekhn I Im W I | Diamantbohrkrone |
DE3706641A1 (de) * | 1987-03-02 | 1988-09-15 | Hilti Ag | Hohlbohrer |
-
1998
- 1998-01-22 DE DE59800309T patent/DE59800309D1/de not_active Expired - Lifetime
- 1998-01-22 EP EP98200161A patent/EP0857552B1/de not_active Expired - Lifetime
- 1998-01-22 ES ES98200161T patent/ES2154072T3/es not_active Expired - Lifetime
- 1998-01-22 AT AT98200161T patent/ATE197133T1/de active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373997B2 (en) | 2005-02-18 | 2008-05-20 | Smith International, Inc. | Layered hardfacing, durable hardfacing for drill bits |
Also Published As
Publication number | Publication date |
---|---|
ATE197133T1 (de) | 2000-11-15 |
DE59800309D1 (de) | 2000-11-30 |
EP0857552A3 (de) | 2000-02-09 |
ES2154072T3 (es) | 2001-03-16 |
EP0857552A2 (de) | 1998-08-12 |
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