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EP1099524B1 - Diamond cutting blade having through holes extending in spiral arrays - Google Patents

Diamond cutting blade having through holes extending in spiral arrays Download PDF

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Publication number
EP1099524B1
EP1099524B1 EP00107378A EP00107378A EP1099524B1 EP 1099524 B1 EP1099524 B1 EP 1099524B1 EP 00107378 A EP00107378 A EP 00107378A EP 00107378 A EP00107378 A EP 00107378A EP 1099524 B1 EP1099524 B1 EP 1099524B1
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EP
European Patent Office
Prior art keywords
cutting
disc
spiral
spiral lines
apertures
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.)
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EP00107378A
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German (de)
French (fr)
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EP1099524A3 (en
EP1099524B2 (en
EP1099524A2 (en
Inventor
Johann Dietmair
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DIEWE-Diamantwerkzeuge GmbH
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DIEWE-Diamantwerkzeuge GmbH
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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
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/025—Details of saw blade body

Definitions

  • the invention relates to a diamond cutting disc with the Features in the preamble of claim 1.
  • Such a diamond cutting disc is from the DE-A-42 43 480 known. It is for dry cutting of Concrete, stone, tiles and other hard materials designed and has a rotationally driven Disc body with a cutting ring made up of several diamond-containing cutting segments on the outer circumference, which in Are circumferential distance from each other.
  • the Cutting segments are made of a different material than the disc body and are through with its outer edge Welding connected. Inside, the Disk body several slit-shaped openings, which serve for cooling. These breakthroughs are as continuous and straight cooling slots formed are aligned exactly radially.
  • the cooling slots are in same number as the cutting segments and aim approximately on the middle of the cutting segments, using Distance before these ends.
  • EP-A-0 836 903 shows another diamond cutting disc. This has a closed on the circumference Cutting ring from a single cutting segment, which with the outer edge of the disc body by sintering connected is.
  • the inside of the window body has one Variety of perforated openings that can have different shapes.
  • the Breakthroughs are in a regular geometric Grid distributed on the pane surface. Here they are either arranged in the center of the disc center axis Rings or in biaxial linear geometric grids arranged.
  • US-A-2,735,243 shows a grinding and cutting disc, which has a disk body made of a friction material, the ring-shaped on its outer circumference on both sides Reinforcements made of the same friction material.
  • This cutting and grinding wheel is for wet operation provided and needs an abrasive and coolant. For this are thickened in the annular Side wall area radial channels available. Also points the disk several more arranged in spiral lines Water holes, some of which are just pockets in the thickened side wall areas are arranged. This Water holes are gradually becoming on the outside opened when the grinding and cutting disc through Abrasive abrasion wears out and its diameter reduced. The purpose of these water holes is also Reduction in disc weight and Centrifugal forces. The consistently from the Abrasive material is homogeneous disc sensitive to such centrifugal forces and needs to Connection with the rotary actuator separate cylindrical Steel mounting plates.
  • FR 2 659 892 shows a similar grinding wheel spirally arranged water holes, the radial Grinding wheel wear gradually opened and as gutters for taking the coolant serve.
  • DE 1 959 323 U shows a cutting blade, in particular a circular saw blade for woodworking, which has saw teeth molded in one piece onto the master blade, which may be additionally equipped with hard metal could be.
  • the circular saw blade has several hole-like ones Breakthroughs arranged in a flat spiral shape are such that they are parallel-walled between them Form bridges.
  • the spirally arranged openings are only in the central area of the circular saw blade and have one to stabilize the circular saw blade greater distance from the outside saw teeth and also from the inner hub hole.
  • the Print also shows some others Design variants for the openings, which can also be used as spiral slits, kidney shaped openings or the like can be designed.
  • a similar circular saw blade with spiral Slot openings are also known from SU-A-90 50 75.
  • a circular saw blade with evenly over the entire Disk body is distributed hexagonal openings known from DE 1 957 226 U.
  • DE 83 04 110 U shows another circular saw blade, in which between the individual teeth hole-shaped recesses with varying Distances from the center of the disc are arranged.
  • From the DE-C 751 428 is finally known a saw blade, which on the disc body several even in circumference distributed coolant openings of different shapes having. This saw blade is used for dividing metallic solid or hollow strands during the continuous Pouring and must therefore constantly in the wet cut and run with coolant.
  • the invention solves this problem with the features in claim 1.
  • the spiral or vortex-shaped arrangement of the openings has advantages in the heat dissipation and in the noise development of the rotating cutting disc.
  • the arrangement of the openings in side-by-side spiral lines, which bulge in particular in the direction of rotation of the cutting disc, ensures a particularly quiet cutting disc with optimal air cooling.
  • the cutting disc can run in dry cut.
  • the cutting disc works with a grinding Removal and is suitable for different, hard Materials, e.g. for concrete with and without reinforcement, for Roof tiles, for hard and medium hard clinker, for Washed concrete and for general construction material.
  • the cutting disc (1) shown in Figures 1 and 2 is as So-called diamond cutting disc designed and used for Cutting and cutting hard materials such as stone, Concrete or the like.
  • the cutting disc (1) can be in suitably around its central axis (2) in the direction of rotation (11) drive in rotation and carries that on average Sanding material.
  • the cutting disc (1) can for Dry cutting can be used, but is also suitable for wet cutting.
  • the cutting disc (1) has a cylindrical one Disc body (4), one on its outer edge (14) Cutting ring (13) carries.
  • the cutting disc is in the center (1) a preferably circular receiving opening (12) for Attachment to a drivable shaft or the like.
  • the disc body (4) has a variety of Openings (5) with a preferably circular one or cylindrical shape.
  • the openings (5) are with mutual distance evenly distributed and in one Spiral shape (6) or vortex shape on the disc body (4) arranged.
  • the spiral shape (6) can vary be trained.
  • the openings (5) form a large number of similar ones Spiral lines (7) from the area of the disc center axis (2) go out and to the outer edge (14) of the Extend the disc body (4).
  • the spiral lines (7) are in the circumferential direction side by side with regular Distribution arranged.
  • the internal openings (5) of the spiral lines (7) form one with the other Central axis (2) concentric inner bolt circle (8). Of this the spiral lines (7) go out.
  • the mutual distances of the spiral lines (7) in The circumferential direction changes with the radial distance. They are smallest and larger at the bolt circle (8) itself up to the outer edge (14) of the disc body (4).
  • the mutual spacing of the openings (5) however, remain within the individual spiral lines (7) preferably the same.
  • the annular cutting ring (13) consists of several cutting segments (3) regularly distributed in a circle, the with appropriate cutting edges and cutting surfaces are equipped and from each other in the circumferential direction are distant. Your end faces in the circumferential direction are beveled.
  • the cutting segments (3) are thicker than the disc body (4) and protrude on both sides.
  • the Cutting segments (3) act as grinding wheels and are included abrasive diamond grains.
  • the cutting segments (3) consist of a suitable one different material than the disc body (4) and are with the outer edge (14) by a welded connection (10), preferably a laser welded joint, or on other suitable way firmly connected.
  • a welded connection (10) preferably a laser welded joint, or on other suitable way firmly connected.
  • the spiral lines (7) are preferably in the same number like the cutting segments (3) and such arranged that each spiral line (7) with its outer Opening (5) on the edge of the disc body between the adjacent undercuts (9) ends.
  • each spiral line (7) with its outer Opening (5) on the edge of the disc body between the adjacent undercuts (9) ends At a practical embodiment with 230 mm disc diameter are e.g. sixteen spiral lines (7) and a corresponding number Cutting segments (3) available.
  • the single spiral line (7) can be about ten to twelve evenly spaced Openings (5) with a diameter of approx. 5 mm.
  • the numerical values mentioned are examples and can fluctuate up and down. In particular has a cutting disc (1) with a smaller diameter correspondingly lower number of spiral lines (7) and Breakthroughs (5).
  • the spiral lines (7) are preferably in the direction of rotation (11) the cutting disc (1) bulged or bulged. she pass over an angle "a" of each approx. 50 ° to 60 °.
  • the angles of curvature of the spiral lines (7) can also be chosen differently depend in particular on the disc diameter.
  • the openings (5) ensure the cutting operation of the rotating cutting disc (1) for swirling the surrounding air. On the one hand, this means that at the Cutting disc (1) from the heat generated by the cutting work released to the ambient air and discharged.
  • the Spiral shape (6) of the openings (5) and in particular the special design of Figures 1 and 2 ensure this for a particularly good heat dissipation, on the other hand the noise caused by the air turbulence the rotating cutting disc (1) can be minimized. moreover result from the transparency of the company rotating cutting disc (1) Control options for the operator.
  • Variations of the embodiment shown are in FIG possible in different ways. On the one hand, they can Cutting segments (3) are formed in a different way and be arranged. Likewise, the spiral shape (6) vary. On the one hand, this applies to the number, Arrangement and formation of the spiral lines (7) and on the other hand with regard to the angle of curvature of the individual spiral lines.
  • the shape of the is also variable Openings (5) instead of a circular one Cross-sectional shape also an oval, prismatic and in suitably can have a different shape.

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  • 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)
  • Crushing And Grinding (AREA)

Abstract

The stone cutting saw disc has through-holes (5) formed in it extending in spiral arrays (6) from its centre to its edges. The inner ends of the spiral arrays can extend from a ring of holes (8) surrounding the central drive axis (2). The pouter holes can extend into notches formed on the periphery of the disc.

Description

Die Erfindung betrifft eine Diamant-Trennscheibe mit den Merkmalen im Oberbegriff des Anspruches 1.The invention relates to a diamond cutting disc with the Features in the preamble of claim 1.

Eine solche Diamant-Trennscheibe ist aus der DE-A-42 43 480 bekannt. Sie ist zum Trockenschneiden von Beton, Gestein, Fliesen und anderen harten Werkstoffen konzipiert und besitzt einen rotatorisch antreibbaren Scheibenkörper mit einem Schneidkranz aus mehreren diamanthaltigen Schneidsegmenten am Außenumfang, welche in Umfangsrichtung voneinander distanziert sind. Die Schneidsegmente bestehen aus einem anderen Material als der Scheibenkörper und sind mit dessen Außenrand durch Schweißen verbunden. Im Innenbereich hat der Scheibenkörper mehrere schlitzförmige Durchbrechungen, die der Kühlung dienen. Diese Durchbrechungen sind als durchgehende und gerade Kühlschlitze ausgebildet, die genau radial ausgerichtet sind. Die Kühlschlitze sind in gleicher Zahl wie die Schneidsegmente vorhanden und zielen etwa auf die Mitte der Schneidsegmente, wobei sie mit Abstand vor diesen enden.Such a diamond cutting disc is from the DE-A-42 43 480 known. It is for dry cutting of Concrete, stone, tiles and other hard materials designed and has a rotationally driven Disc body with a cutting ring made up of several diamond-containing cutting segments on the outer circumference, which in Are circumferential distance from each other. The Cutting segments are made of a different material than the disc body and are through with its outer edge Welding connected. Inside, the Disk body several slit-shaped openings, which serve for cooling. These breakthroughs are as continuous and straight cooling slots formed are aligned exactly radially. The cooling slots are in same number as the cutting segments and aim approximately on the middle of the cutting segments, using Distance before these ends.

Die EP-A-0 836 903 zeigt eine andere Diamant-Trennscheibe. Diese besitzt einen umfangsseitig geschlossenen Schneidkranz aus einem einzigen Schneidsegment, welches mit dem Außenrand des Scheibenkörpers durch Sintern verbunden ist. Im Innenbereich hat der Scheibenkörper eine Vielzahl von lochförmigen Durchbrechungen, die unterschiedliche Formgebungen haben können. Die Durchbrechungen sind in einem regelmäßigen geometrischen Raster auf der Scheibenfläche verteilt. Hierbei sind sie entweder in zentrisch zur Scheibenmittelachse angeordneten Ringen oder in zweiachsigen linearen geometrischen Rastern angeordnet.EP-A-0 836 903 shows another diamond cutting disc. This has a closed on the circumference Cutting ring from a single cutting segment, which with the outer edge of the disc body by sintering connected is. The inside of the window body has one Variety of perforated openings that can have different shapes. The Breakthroughs are in a regular geometric Grid distributed on the pane surface. Here they are either arranged in the center of the disc center axis Rings or in biaxial linear geometric grids arranged.

Die US-A-2,735,243 zeigt eine Schleif- und Trennscheibe, die einen Scheibenkörper aus einem Reibmaterial aufweist, der an seinem Außenumfang an beiden Seiten ringförmige Verstärkungen aus dem gleichen Reibmaterial aufweist. Diese Trenn- und Schleifscheibe ist für den Nassbetrieb vorgesehen und braucht ein Schleif- und Kühlmittel. Hierfür sind in dem ringförmigen verdickten Seitenwandbereich radiale Kanäle vorhanden. Außerdem weist die Scheibe noch mehrere in Spirallinien angeordnete Wasserlöcher auf, die zum Teil auch nur als Taschen in den verdickten Seitenwandbereichen angeordnet sind. Diese Wasserlöcher werden nach und nach an der Außenseite geöffnet, wenn die Schleif- und Trennscheibe durch Schleifmittelabtrag verschleißt und ihren Durchmesser verringert. Zweck dieser Wasserlöcher ist außerdem die Verringerung des Scheibengewichts und der Zentrifugalkräfte. Die durchgängig aus dem Schleifmittel-Material bestehende homogene Scheibe ist gegen solche Fliehkräfte empfindlich und braucht zur Verbindung mit dem Drehantrieb separate zylindrische Montageplatten aus Stahl.US-A-2,735,243 shows a grinding and cutting disc, which has a disk body made of a friction material, the ring-shaped on its outer circumference on both sides Reinforcements made of the same friction material. This cutting and grinding wheel is for wet operation provided and needs an abrasive and coolant. For this are thickened in the annular Side wall area radial channels available. Also points the disk several more arranged in spiral lines Water holes, some of which are just pockets in the thickened side wall areas are arranged. This Water holes are gradually becoming on the outside opened when the grinding and cutting disc through Abrasive abrasion wears out and its diameter reduced. The purpose of these water holes is also Reduction in disc weight and Centrifugal forces. The consistently from the Abrasive material is homogeneous disc sensitive to such centrifugal forces and needs to Connection with the rotary actuator separate cylindrical Steel mounting plates.

Die FR 2 659 892 zeigt eine ähnliche Schleifscheibe mit spiralförmig angeordneten Wasserlöchern, die bei radialem Verschleiß der Schleifscheibe nach und nach geöffnet werden und als Fangrinnen zur Mitnahme des Kühlmittels dienen.FR 2 659 892 shows a similar grinding wheel spirally arranged water holes, the radial Grinding wheel wear gradually opened and as gutters for taking the coolant serve.

Die DE 1 959 323 U zeigt ein Schneidblatt, insbesondere ein Kreissägeblatt für die Holzbearbeitung, welches einteilig an das Stammblatt angeformte Sägezähne aufweist, welche gegebenenfalls mit Hartmetall zusätzlich bestückt sein können. Das Kreissägeblatt hat mehrere lochartige Durchbrüche, die in einer flachspiraligen Form angeordnet sind und zwar so, dass sie zwischen sich parallelwandige Stege bilden. Die spiralförmig angeordneten Durchbrüche befinden sich nur im Mittelbereich des Kreissägeblattes und haben zur Stabilisierung des Kreissägeblattes einen größeren Abstand von den außenseitigen Sägezähnen und außerdem auch vom innenliegenden Nabenloch. Die Druckschrift zeigt auch noch einige andere Gestaltungsvarianten für die Durchbrechungen, die auch als spiralförmige Schlitze, nierenförmige Öffnungen oder dergleichen gestaltet sein können.DE 1 959 323 U shows a cutting blade, in particular a circular saw blade for woodworking, which has saw teeth molded in one piece onto the master blade, which may be additionally equipped with hard metal could be. The circular saw blade has several hole-like ones Breakthroughs arranged in a flat spiral shape are such that they are parallel-walled between them Form bridges. The spirally arranged openings are only in the central area of the circular saw blade and have one to stabilize the circular saw blade greater distance from the outside saw teeth and also from the inner hub hole. The Print also shows some others Design variants for the openings, which can also be used as spiral slits, kidney shaped openings or the like can be designed.

Ein ähnliches Kreissägeblatt mit spiralförmigen Schlitzöffnungen ist auch aus der SU-A-90 50 75 bekannt. Ein Kreissägeblatt mit gleichmäßig über den gesamten Scheibenkörper verteilten sechseckigen Durchbrechungen ist aus der DE 1 957 226 U bekannt. Die DE 83 04 110 U zeigt ein weiteres Kreissägeblatt, bei dem zwischen den einzelnen Zähnen lochförmige Ausnehmungen mit variierenden Abständen vom Scheibenmittelpunkt angeordnet sind. Aus der DE-C 751 428 ist schließlich noch ein Sägeblatt bekannt, welches am Scheibenkörper mehrere gleichmäßige im Umfang verteilte Kühlmittelöffnungen unterschiedlicher Formgebung aufweist. Dieses Sägeblatt dient zum Aufteilen von metallischen Voll- oder Hohlsträngen während des stetigen Gießens und muss von daher ständig in dem Nassschnitt und mit Kühlmittel laufen.A similar circular saw blade with spiral Slot openings are also known from SU-A-90 50 75. A circular saw blade with evenly over the entire Disk body is distributed hexagonal openings known from DE 1 957 226 U. DE 83 04 110 U shows another circular saw blade, in which between the individual teeth hole-shaped recesses with varying Distances from the center of the disc are arranged. From the DE-C 751 428 is finally known a saw blade, which on the disc body several even in circumference distributed coolant openings of different shapes having. This saw blade is used for dividing metallic solid or hollow strands during the continuous Pouring and must therefore constantly in the wet cut and run with coolant.

Es ist Aufgabe der vorliegenden Erfindung, die bekannten Trennscheiben zu verbessern.It is an object of the present invention, the known To improve cutting discs.

Die Erfindung löst diese Aufgabe mit den Merkmalen im Anspruch 1.
Die spiralförmige oder wirbelförmige Anordnung der Durchbrechungen hat Vorteile bei der Wärmeableitung und bei der Geräuschentwicklung der rotierenden Trennscheibe. Die Anordnung der Durchbrechungen in nebeneinander angeordneten Spirallinien, die sich insbesondere in Drehrichtung der Trennscheibe ausbauchen, sorgt für eine besonders leise Trennscheibe mit optimaler Luftkühlung. Die Trennscheibe kann im Trockenschnitt laufen.The invention solves this problem with the features in claim 1.
The spiral or vortex-shaped arrangement of the openings has advantages in the heat dissipation and in the noise development of the rotating cutting disc. The arrangement of the openings in side-by-side spiral lines, which bulge in particular in the direction of rotation of the cutting disc, ensures a particularly quiet cutting disc with optimal air cooling. The cutting disc can run in dry cut.

Weitere Vorteile liegen in einer besonders hohen Standzeit und einer excellenten Schnittigkeit der Trennscheibe sowie einem geringen Gewicht nebst hervorragend Wucht- und Resonanzeigenschaften. Auch die Stabilität der Trennscheibe ist trotz der Vielzahl der Durchbrechungen durch deren geschickte Anordnung optimal. Außerdem ergibt sich durch die Lochung eine Transparenz der drehenden Trennscheibe, die eine Kontrolle der gegenüberliegenden Schnittkante ermöglicht.Further advantages are a particularly long service life and an excellent cutting ability of the cutting disc as well a low weight and excellent balancing and Resonance characteristics. Even the stability of the Cutting disc is despite the large number of openings through their clever arrangement optimal. Also results perforation creates a transparency of the rotating Cutting disc which is a control of the opposite Cutting edge enables.

Die Trennscheibe arbeitet mit einem einem schleifenden Abtrag und eignet sich für unterschiedliche, harte Materialien, z.B. für Beton mit und ohne Armierung, für Dachpfannen, für harte und mittelharte Klinker, für Waschbeton und für allgemeines Baustellenmaterial.The cutting disc works with a grinding Removal and is suitable for different, hard Materials, e.g. for concrete with and without reinforcement, for Roof tiles, for hard and medium hard clinker, for Washed concrete and for general construction material.

In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen der Erfindung angegeben. In the subclaims are further advantageous Embodiments of the invention specified.

Die Erfindung ist in den Zeichnungen beispielsweise und schematisch dargestellt. Im einzelnen zeigen:

Figur 1:
eine Draufsicht auf eine Trennscheibe und
Figur 2:
einen Partialschnitt durch die Trennscheibe gemäß Schnittlinie II-II von Figur 1.
The invention is shown in the drawings, for example and schematically. In detail show:
Figure 1:
a plan view of a cutting disc and
Figure 2:
a partial section through the cutting wheel according to section line II-II of Figure 1.

Die in Figur 1 und 2 dargestellte Trennscheibe (1) ist als sogenannte Diamant-Trennscheibe ausgebildet und dient zum Trennen und Schneiden von harten Werkstoffen, wie Stein, Beton oder dergleichen. Die Trennscheibe (1) lässt sich in geeigneter Weise um ihre Mittelachse (2) in Drehrichtung (11) rotatorisch antreiben und trägt im Schnitt das Material schleifend ab. Die Trennscheibe (1) kann für Trockenschnitt eingesetzt werden, eignet sich aber auch für Nassschnitt.The cutting disc (1) shown in Figures 1 and 2 is as So-called diamond cutting disc designed and used for Cutting and cutting hard materials such as stone, Concrete or the like. The cutting disc (1) can be in suitably around its central axis (2) in the direction of rotation (11) drive in rotation and carries that on average Sanding material. The cutting disc (1) can for Dry cutting can be used, but is also suitable for wet cutting.

Die Trennscheibe (1) hat einen zylindrischen Scheibenkörper (4), der an seinem äußerem Rand (14) einen Schneidkranz (13) trägt. Im Zentrum hat die Trennscheibe (1) eine vorzugsweise kreisrunde Aufnahmeöffnung (12) zur Befestigung an einer antreibbaren Welle oder dergleichen.The cutting disc (1) has a cylindrical one Disc body (4), one on its outer edge (14) Cutting ring (13) carries. The cutting disc is in the center (1) a preferably circular receiving opening (12) for Attachment to a drivable shaft or the like.

Der Scheibenkörper (4) besitzt eine Vielzahl von Durchbrechungen (5) mit einer vorzugsweise kreisrunden bzw. zylindrischen Form. Die Durchbrechungen (5) sind mit gegenseitigem Abstand gleichmäßig verteilt und in einer Spiralform (6) oder Wirbelform am Scheibenkörper (4) angeordnet. Die Spiralform (6) kann unterschiedlich ausgebildet sein.The disc body (4) has a variety of Openings (5) with a preferably circular one or cylindrical shape. The openings (5) are with mutual distance evenly distributed and in one Spiral shape (6) or vortex shape on the disc body (4) arranged. The spiral shape (6) can vary be trained.

Die Durchbrechungen (5) bilden eine Vielzahl gleichartiger Spirallinien (7), die vom Bereich der Scheibenmittelachse (2) ausgehen und sich zum äußeren Rand (14) des Scheibenkörpers (4) erstrecken. Die Spirallinien (7) sind in Umfangsrichtung nebeneinander mit regelmäßiger Verteilung angeordnet. Die innenliegenden Durchbrechungen (5) der Spirallinien (7) bilden miteinander einen zur Mittelachse (2) konzentrischen inneren Lochkreis (8). Von diesem gehen die Spirallinien (7) aus.The openings (5) form a large number of similar ones Spiral lines (7) from the area of the disc center axis (2) go out and to the outer edge (14) of the Extend the disc body (4). The spiral lines (7) are in the circumferential direction side by side with regular Distribution arranged. The internal openings (5) of the spiral lines (7) form one with the other Central axis (2) concentric inner bolt circle (8). Of this the spiral lines (7) go out.

Die gegenseitigen Abstände der Spirallinien (7) in Umfangsrichtung verändern sich mit dem radialen Abstand. Am Lochkreis (8) sind sie am kleinsten und vergrößeren sich bis zum äußeren Rand (14) des Scheibenkörpers (4). Die gegenseitigen Abstände der Durchbrechungen (5) innerhalb der einzelnen Spirallinien (7) bleiben hingegen vorzugsweise gleich.The mutual distances of the spiral lines (7) in The circumferential direction changes with the radial distance. They are smallest and larger at the bolt circle (8) itself up to the outer edge (14) of the disc body (4). The mutual spacing of the openings (5) however, remain within the individual spiral lines (7) preferably the same.

Der ringförmige Schneidkranz (13) besteht aus mehreren regelmäßig im Kreis verteilten Schneidsegmenten (3), die mit entsprechenden Schneidkanten und Schneidflächen ausgerüstet sind und voneinander in Umfangsrichtung distanziert sind. Ihre Stirnflächen in Umfangsrichtung sind angeschrägt. Die Schneidsegmente (3) sind dicker als der Scheibenkörper (4) und stehen beidseits vor. Die Schneidsegmente (3) wirken als Schleifkörper und sind mit abtragenden Diamantkörnchen besetzt.The annular cutting ring (13) consists of several cutting segments (3) regularly distributed in a circle, the with appropriate cutting edges and cutting surfaces are equipped and from each other in the circumferential direction are distant. Your end faces in the circumferential direction are beveled. The cutting segments (3) are thicker than the disc body (4) and protrude on both sides. The Cutting segments (3) act as grinding wheels and are included abrasive diamond grains.

Die Schneidsegmente (3) bestehen aus einem geeigneten anderen Material als der Scheibenkörper (4) und sind mit dessen äußerem Rand (14) durch eine Schweißverbindung (10), vorzugsweise eine Laser-Schweißverbindung, oder auf andere geeignete Weise fest verbunden. Im Fußbereich haben die Schneidsegmente (3) an ihren Übergangsstellen vom einen zum anderen Segment jeweils einen nach außen gegen die Drehrichtung (11) sich öffnenden Hinterschnitt (9), der bis in den Randbereich des Scheibenkörpers (4) hineinragt und dort am Ende in eine etwas verbreiterte und im wesentlichen kreisrunde Durchbrechung übergeht. The cutting segments (3) consist of a suitable one different material than the disc body (4) and are with the outer edge (14) by a welded connection (10), preferably a laser welded joint, or on other suitable way firmly connected. Have in the foot area the cutting segments (3) at their transition points from one to the other segment one against the other the undercut (9) opening in the direction of rotation (11), up to the edge of the disc body (4) protrudes and there at the end in a somewhat widened and essentially circular breakthrough.

Die Spirallinien (7) sind vorzugsweise in gleicher Zahl wie die Schneidsegmente (3) vorhanden und derart angeordnet, dass jede Spirallinie (7) mit ihrer äußeren Durchbrechung (5) am Scheibenkörperrand zwischen den benachbarten Hinterschnitten (9) endet. Bei einer praktischen Ausführungsform mit 230 mm Scheibendurchmesser sind z.B. sechzehn Spirallinien (7) und entsprechend viele Schneidsegmente (3) vorhanden. Die einzelne Spirallinie (7) kann dabei ca. zehn bis zwölf gleichmäßig beabstandete Durchbrechungen (5) mit einem Durchmesser von jeweils ca. 5 mm aufweisen. Die genannten Zahlenwerte sind Beispiele und können nach oben und unten schwanken. Insbesondere hat eine Trennscheibe (1) mit kleinerem Durchmesser eine entsprechend geringere Zahl an Spirallinien (7) und Durchbrechungen (5).The spiral lines (7) are preferably in the same number like the cutting segments (3) and such arranged that each spiral line (7) with its outer Opening (5) on the edge of the disc body between the adjacent undercuts (9) ends. At a practical embodiment with 230 mm disc diameter are e.g. sixteen spiral lines (7) and a corresponding number Cutting segments (3) available. The single spiral line (7) can be about ten to twelve evenly spaced Openings (5) with a diameter of approx. 5 mm. The numerical values mentioned are examples and can fluctuate up and down. In particular has a cutting disc (1) with a smaller diameter correspondingly lower number of spiral lines (7) and Breakthroughs (5).

Die Spirallinien (7) sind vorzugsweise in Drehrichtung (11) der Trennscheibe (1) vorgewölbt oder ausgebaucht. Sie überstreichen dabei jeweils einen Winkel "a" von jeweils ca. 50° bis 60°. Die Krümmungswinkel der Spirallinien (7) können aber auch anders gewählt werden und können insbesondere vom Scheibendurchmesser abhängen.The spiral lines (7) are preferably in the direction of rotation (11) the cutting disc (1) bulged or bulged. she pass over an angle "a" of each approx. 50 ° to 60 °. The angles of curvature of the spiral lines (7) can also be chosen differently depend in particular on the disc diameter.

Die Durchbrechungen (5) sorgen im Schneidbetrieb der drehenden Trennscheibe (1) für eine Verwirbelung der umgebenden Luft. Hierdurch wird einerseits die an der Trennscheibe (1) durch die Schneidarbeit auftretende Wärme an die Umgebungsluft abgegeben und abgeführt. Die Spiralform (6) der Durchbrechungen (5) und insbesondere die spezielle Gestaltung von Figur 1 und 2 sorgen hierbei für eine besonders gute Wärmeabfuhr, wobei andererseits die durch die Luftverwirbelungen auftretenden Geräusche der drehenden Trennscheibe (1) minimiert werden. Zudem ergeben sich im Betrieb durch eine Transparenz der drehenden Trennscheibe (1) Durchblick- und Kontrollmöglichkeiten für den Bediener. The openings (5) ensure the cutting operation of the rotating cutting disc (1) for swirling the surrounding air. On the one hand, this means that at the Cutting disc (1) from the heat generated by the cutting work released to the ambient air and discharged. The Spiral shape (6) of the openings (5) and in particular the special design of Figures 1 and 2 ensure this for a particularly good heat dissipation, on the other hand the noise caused by the air turbulence the rotating cutting disc (1) can be minimized. moreover result from the transparency of the company rotating cutting disc (1) Control options for the operator.

Abwandlungen der gezeigten Ausführungsform sind in verschiedener Weise möglich. So können zum einen die Schneidsegmente (3) in anderer Weise ausgebildet und angeordnet sein. Desgleichen kann die Spiralform (6) variieren. Dies gilt einerseits bezüglich der Zahl, Anordnung und Ausbildung der Spirallinien (7) und andererseits hinsichtlich der Krümmungswinkel der einzelnen Spirallinien. Variabel ist auch die Form der Durchbrechungen (5), die statt einer kreisrunden Querschnittsform auch eine ovale, prismatische und in geeigneter Weise anders geartete Ausformung haben können. Variations of the embodiment shown are in FIG possible in different ways. On the one hand, they can Cutting segments (3) are formed in a different way and be arranged. Likewise, the spiral shape (6) vary. On the one hand, this applies to the number, Arrangement and formation of the spiral lines (7) and on the other hand with regard to the angle of curvature of the individual spiral lines. The shape of the is also variable Openings (5) instead of a circular one Cross-sectional shape also an oval, prismatic and in suitably can have a different shape.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Trennscheibecutting wheel
22
Mittelachsecentral axis
33
Schneidsegmentcutting segment
44
Scheibenkörperwasher body
55
Durchbrechungperforation
66
Spiralformspiral shape
77
Spiralliniespiral line
88th
innerer Lochkreisinner bolt circle
99
Hinterschnitt, HinterschneidungUndercut, undercut
1010
Schweißverbindungwelded joint
1111
Drehrichtungdirection of rotation
1212
Aufnahmeöffnungreceiving opening
1313
Schneidkranzbladed wheel
1414
äußerer Rand des Scheibenkörpersouter edge of the disc body
aa
Krümmungswinkel SpirallinieAngle of curvature spiral line

Claims (7)

  1. Diamond cutting-off disc having a disc body (4) which can be rotationally driven and which, at the outer circumference, carries an annular cutting rim (13) consisting of a plurality of diamond-impregnated cutting segments (3) which are at a distance from one another in the circumferential direction, are made of a material different from the disc body (4) and are connected to the outer margin (14) of the latter, the cutting segments (3), in the root region at their transition points from one to the other segment (3), each having an undercut (9) which opens outwards and projects right into the marginal region of the disc body (4), and the disc body (4) having a plurality of apertures (5), characterized in that a plurality of apertures (5) are arranged in a spiral form (6) and form a plurality of spiral lines (7) lying side by side, the spiral lines (7) and the cutting segments (3) being present in the same number, and the spiral lines (7), with their outer apertures (5), ending at the disc-body margin between adjacent undercuts (9).
  2. Cutting-off disc according to Claim 1, characterized in that the spiral lines (7) start from the region of the disc centre axis (2).
  3. Cutting-off disc according to Claim 1 or 2, characterized in that the spiral lines (7), with their apertures (5) on the inside, form a hole circle (8) concentric to the disc centre axis (2).
  4. Cutting-off disc according to Claim 1, 2 or 3, characterized in that the spiral lines (7) are arched forwards in the direction (11) of rotation of the cutting-off disc (1).
  5. Cutting-off disc according to one of Claims 1 to 4, characterized in that the apertures (5) have an essentially cylindrical shape.
  6. Cutting-off disc according to one of Claims 1 to 5, characterized in that the undercuts (9) open against the direction (11) of rotation.
  7. Cutting-off disc according to one of Claims 1 to 6, characterized in that the undercuts (9) merge at the end into a slightly widened and essentially circular aperture.
EP00107378A 1999-06-15 2000-04-05 Diamond cutting blade having through holes extending in spiral arrays Expired - Lifetime EP1099524B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29910442U 1999-06-15
DE29910442U DE29910442U1 (en) 1999-06-15 1999-06-15 Cutting disc

Publications (4)

Publication Number Publication Date
EP1099524A2 EP1099524A2 (en) 2001-05-16
EP1099524A3 EP1099524A3 (en) 2001-09-12
EP1099524B1 true EP1099524B1 (en) 2002-06-05
EP1099524B2 EP1099524B2 (en) 2006-03-01

Family

ID=8074835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107378A Expired - Lifetime EP1099524B2 (en) 1999-06-15 2000-04-05 Diamond cutting blade having through holes extending in spiral arrays

Country Status (4)

Country Link
EP (1) EP1099524B2 (en)
AT (1) ATE218423T1 (en)
DE (2) DE29910442U1 (en)
DK (1) DK1099524T4 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1270161A1 (en) * 2001-06-29 2003-01-02 Turbolite AG Circular saw blade having a support disc with holes of different sizes
DE20203238U1 (en) * 2002-03-01 2003-07-10 DIEWE-Diamantwerkzeuge GmbH, 86510 Ried Grinding tool, in particular cut-off tool
DE10304162B3 (en) * 2003-02-03 2004-06-03 Hilti Ag Circular saw blade with sound damping device for use in hand-held saw has borings of intermediate perforation divided into boring groups separated from each other
GB0812784D0 (en) * 2008-07-14 2008-08-20 British American Tobacco Co Cigarette filter cutting element
GB2508246A (en) * 2012-11-27 2014-05-28 Safehouse Habitats Scotland Ltd Cold cutting/grinding disc

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US2047649A (en) * 1935-11-06 1936-07-14 Harry G Robinson Abrasive wheel
US4624237A (en) * 1984-06-08 1986-11-25 Jiro Inoue Diamond saw
DE4243480A1 (en) * 1992-12-22 1994-06-23 Sanshu Press Kogyo Kk Dry rock-sawing blade
EP0703034A1 (en) * 1994-09-16 1996-03-27 Osaka Diamond Industrial Co., Ltd. Blade and method of manufacturing the same

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US2735243A (en) * 1956-02-21 Abrasive cutting
DE1959323U (en) * 1966-10-29 1967-04-27 Felde Richard Fa DISC-SHAPED CUTTING BLADE, IN PARTICULAR CIRCULAR SAW BLADE.
SU905075A1 (en) * 1977-10-03 1982-02-15 Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова Disc saw
DE8304110U1 (en) * 1983-02-15 1983-06-23 Gröschke, Dieter, 8472 Schwarzenfeld Circular saw blade
DE3606581A1 (en) * 1986-02-28 1987-09-03 Nkk Nihon Structure Co Grinding or cutting disc
FR2659892B1 (en) * 1990-03-20 1994-11-10 Snecma ABRASIVE GRINDING TYPE CUTTING DISC.
DE4328482C2 (en) * 1993-08-24 1998-01-29 Fgw Forsch Werkzeuge Werkstoff Circular saw blade
IT240956Y1 (en) * 1996-10-16 2001-04-20 Tecnodiam Di Savone Concetta TOOL OF THE DIAMOND DISC TYPE, PARTICULARLY DESIGNED FOR THE CUTTING OF GRANITE, MARBLE OF REINFORCED CONCRETE AND MATERIALS
DE19648129A1 (en) * 1996-11-21 1998-05-28 Lauffer Adelbert Dipl Ing Fh Blade for circular saw
DE19715490C2 (en) * 1997-04-14 2000-06-21 Dia Lux Diamantwerkzeuge Gmbh Process for producing a cutting disc, and cutting discs in particular for cutting or sawing natural stone or concrete, for example

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047649A (en) * 1935-11-06 1936-07-14 Harry G Robinson Abrasive wheel
US4624237A (en) * 1984-06-08 1986-11-25 Jiro Inoue Diamond saw
DE4243480A1 (en) * 1992-12-22 1994-06-23 Sanshu Press Kogyo Kk Dry rock-sawing blade
EP0703034A1 (en) * 1994-09-16 1996-03-27 Osaka Diamond Industrial Co., Ltd. Blade and method of manufacturing the same

Also Published As

Publication number Publication date
ATE218423T1 (en) 2002-06-15
DK1099524T3 (en) 2002-09-09
EP1099524A3 (en) 2001-09-12
EP1099524B2 (en) 2006-03-01
DE50000199D1 (en) 2002-07-11
EP1099524A2 (en) 2001-05-16
DK1099524T4 (en) 2006-06-19
DE29910442U1 (en) 2000-10-19

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