EP0372141A2 - Diamond disc for cutting hard or abrasive products - Google Patents

Diamond disc for cutting hard or abrasive products Download PDF

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Publication number
EP0372141A2
EP0372141A2 EP88403037A EP88403037A EP0372141A2 EP 0372141 A2 EP0372141 A2 EP 0372141A2 EP 88403037 A EP88403037 A EP 88403037A EP 88403037 A EP88403037 A EP 88403037A EP 0372141 A2 EP0372141 A2 EP 0372141A2
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EP
European Patent Office
Prior art keywords
tooth
diamond
support
disc
leading edge
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Withdrawn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
EP88403037A
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German (de)
French (fr)
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EP0372141A3 (en
Inventor
Edmond Happe
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LES TECHNIQUES DU DIAMANT TECHNIDIAM SA
Original Assignee
LES TECHNIQUES DU DIAMANT TECHNIDIAM SA
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 LES TECHNIQUES DU DIAMANT TECHNIDIAM SA filed Critical LES TECHNIQUES DU DIAMANT TECHNIDIAM SA
Publication of EP0372141A2 publication Critical patent/EP0372141A2/en
Publication of EP0372141A3 publication Critical patent/EP0372141A3/en
Withdrawn legal-status Critical Current

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    • 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
    • B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth: Varying pitch; Details of gullet

Definitions

  • the present invention relates to a diamond disc for cutting hard or abrasive products, such as stones, granites, sandstones, refractory products, concrete or similar products, disc composed of a sheet metal support whose periphery includes teeth separated by notches, as well as diamond segments of precise shape conforming to the curvature of the periphery of the support and whose thickness is greater than that of the sheet of the support.
  • Diamond cutting discs are known for cutting hard or abrasive products of the type indicated above. Such a known disc is shown in FIG. 1 which shows part of the sheet metal support 1 provided with teeth 2 separated by notches 3. Each tooth is provided with a diamond segment 4.
  • the sheet of the support 1 of the segments 4 is made of quality steel, tensioned and planed.
  • Diamond segments are lozenges with a precise shape matching the curvature of the edge of the teeth. These segments have a rigorous thickness and the length of the different segments is identical.
  • the segments have, for example, a length of 40 mm.
  • the segments 4 have a thickness greater than the thickness of the sheet of the support 1 so as to give way to saw cuts in the product. This also allows the arrival of the cutting liquid (generally water or emulsified water) driven by centrifugal effect and used to cool the cutting area as well as to evacuate sawing debris.
  • the cutting liquid generally water or emulsified water
  • the notches 3 of the support 1 not only delimit the length of the teeth and the lengths of the diamond segments but also create a small reserve volume for the sawdust upstream of each segment.
  • the diamond segments 4 are fixed to the teeth 2 by suitable connecting means, for example welds.
  • the object of the present invention is to remedy these drawbacks and to this end relates to a diamond disc of the above type, characterized in that the leading edge of each tooth 2 is provided with a means of protection 5 against abrasion.
  • the means of protection against erosion and abrasion consists of an erosion-resistant plate, a plate which lines the leading edge of each tooth.
  • each protective plate is provided only on one side of the leading edge of each tooth, the side on which the plate is provided alternating from one tooth to the next tooth.
  • the means of protection against abrasion and the pads abrasion protection is made of materials chosen from the following group: - sintered tungsten carbide, - molten tungsten carbide, - boron carbide, - titanium carbide, - ceramic, - porcelain.
  • the plates are fixed on at least part of the leading edge of each tooth, by welding, soldering, bonding, welding by laser microfusion.
  • the thickness of the inserts is chosen according to the service life expected of them and which may correspond to that of the diamond segments.
  • the diamond disc of the invention consists of a support 1 made of sheet metal, the periphery of which comprises teeth 2 separated by notches 3.
  • the teeth 2 carry diamond elements 4.
  • the direction of rotation of the disc is indicated by the arrow A.
  • the diamond disc has means of protection against abrasion 5. These means are preferably provided only on the leading edge of each tooth (according to the direction of rotation of the disc, meaning being always the same).
  • the protection means 5 are constituted, each time, by a plate occupying the entire leading edge of each tooth 2 or preferably only one side of each tooth; the sides on which its provided the plates 5 constituting the protection means, alternate from one tooth to the other as indicated in FIG. 5.
  • These abrasion protection plates are made of abrasion resistant materials and in particular tungsten carbide, sintered or molten, boron carbide, titanium carbide, ceramic or porcelain.
  • These plates are fixed on the leading edge of each tooth by a fixing means such as a weld, a solder, a bonding, a weld by laser microfusion, etc.
  • Figure 5 which is a top view developed from the edge of a diamond disc shows several teeth 2A, 2B, 2C, 2D of the disc, the diamond plates 4A, 4B, 4C, 4D in dotted lines, the pads 5B, 5C, 5D filling the leading edge of the corresponding teeth and occupying alternate positions sometimes to the left, sometimes to the right. This figure also shows by an arrow the direction of movement of the teeth.
  • leading edge of each tooth can be loaded with several plates depending on the surface to be protected. These plates can also have different thicknesses.

Abstract

The present invention relates to a diamond disc for cutting hard or abrasive products, such as stones, granite, sandstone, refractory products, concrete or similar products, which disc is composed of a sheet-metal support whose periphery comprises teeth separated by notches, and of diamond segments of a precise shape matching the curvature of the periphery of the support and whose thickness is greater than that of the sheet-metal of the support. This disc is characterised in that the leading edge of each tooth (2) is provided with a means (5) for protection against abrasion. <IMAGE>

Description

La présente invention concerne un disque diamanté pour la coupe de produits durs ou abrasifs, tels que les pierres, les granits, les grès, les produits réfractaires, le béton ou produits similaires, disque composé d'un support en tôle dont la periphérie comporte des dents séparées par des encoches, ainsi que des seg­ments diamantés de forme précise épousant la courbure de la périphérie du support et dont l'épaisseur est supé­rieure à celle de la tôle du support.The present invention relates to a diamond disc for cutting hard or abrasive products, such as stones, granites, sandstones, refractory products, concrete or similar products, disc composed of a sheet metal support whose periphery includes teeth separated by notches, as well as diamond segments of precise shape conforming to the curvature of the periphery of the support and whose thickness is greater than that of the sheet of the support.

On connaît des disques de sciage, diamantés, pour couper les produits durs ou abrasifs du type indiqué ci-­dessus. Un tel disque connu est représenté à la figure 1 qui montre une partie du support en tôle 1 muni de dents 2 séparées par des encoches 3. Chaque dent est garnie d'un segment diamanté 4.Diamond cutting discs are known for cutting hard or abrasive products of the type indicated above. Such a known disc is shown in FIG. 1 which shows part of the sheet metal support 1 provided with teeth 2 separated by notches 3. Each tooth is provided with a diamond segment 4.

La tôle du support 1 des segments 4 est réalisée en acier de qualité, tensionnée et planée.The sheet of the support 1 of the segments 4 is made of quality steel, tensioned and planed.

Les segments diamantés sont des pastilles ayant une forme précise épousant la courbure du bord des dents. Ces segments ont une épaisseur rigoureuse et la longueur des différents segments est identiques.Diamond segments are lozenges with a precise shape matching the curvature of the edge of the teeth. These segments have a rigorous thickness and the length of the different segments is identical.

Les segments ont, par exemple, une longueur de 40 mm.The segments have, for example, a length of 40 mm.

Comme le montre la figure 2, les segments 4 ont une épaisseur supérieure à l'épaisseur de la tôle du support 1 de manière à donner de la voie aux traits de sciage dans le produit. Cela permet également l'arrivée du li­quide de coupe (en général de l'eau ou de l'eau émulsionnée) entraîné par effet centrifuge et servant à refroidir la zone de coupe ainsi qu'à évacuer les débris de sciage.As shown in Figure 2, the segments 4 have a thickness greater than the thickness of the sheet of the support 1 so as to give way to saw cuts in the product. This also allows the arrival of the cutting liquid (generally water or emulsified water) driven by centrifugal effect and used to cool the cutting area as well as to evacuate sawing debris.

Il convient de noter que pour des raisons techni­ques de construction et d'utilisation, les disques de coupe tournent toujours dans le même sens.It should be noted that for technical reasons of construction and use, the cutting discs always rotate in the same direction.

Les encoches 3 du support 1 délimitent non seule­ment la longueur des dents et la longueurs des segments diamantés mais créent également en amont de chaque seg­ment un petit volume de réserve pour la boue de sciage.The notches 3 of the support 1 not only delimit the length of the teeth and the lengths of the diamond segments but also create a small reserve volume for the sawdust upstream of each segment.

Les segments diamantés 4 sont fixés sur les dents 2 par des moyens de liaison appropriés par exemple des soudures.The diamond segments 4 are fixed to the teeth 2 by suitable connecting means, for example welds.

Or, on a constaté sur les disques de coupe connus, un effet d'érosion à la base des segments, c'est-à-dire à la jonction des segments et des dents du support en tôle. Cette érosion se traduit par un amincissement no­tamment du bord extérieur des dents (figures 3, 3A) ré­duisant ainsi la surface de liaison entre le segment diamanté 4 et la dent correspondante 2. La forme initia­le des dents est représentée en pointillés à la figure 3A et la forme en lame de couteau, en trait plein. Cette usure est provoquée par l'érosion de la boue qui se dé­place devant la tôle à une vitesse relative atteignant parfois 40 m par seconde. Du fait de l'amincissement du bord extérieur des dents, le disque peut perdre les seg­ments bien avant que ceux-ci ne soient usés. De plus, l'usure des bords des dents en forme de lame de couteau ne permet plus d'envisager de fixer sur les disques de nouveaux segments diamantés.However, it has been found on known cutting discs, an erosion effect at the base of the segments, that is to say at the junction of the segments and the teeth of the sheet metal support. This erosion results in a thinning in particular of the outer edge of the teeth (FIGS. 3, 3A) thus reducing the bonding surface between the diamond segment 4 and the corresponding tooth 2. The initial shape of the teeth is shown in dotted lines in FIG. 3A and the knife blade shape, in solid lines. This wear is caused by the erosion of the mud which moves in front of the sheet at a relative speed sometimes reaching 40 m per second. Due to the thinning of the outer edge of the teeth, the disc can lose the segments long before they are worn out. In addition, the wear of the edges of the teeth in the shape of a knife blade no longer makes it possible to envisage fixing on the discs new diamond segments.

Cela signifie que l'ensemble du disque diamanté doit être mis au rebut de manière prématurée. Or, un tel disque notamment lorsqu'il s'agit d'un disque de grandes dimensions est un produit coûteux à la fois par le coût du support et par celui des segments diamantés.This means that the entire diamond blade must be scrapped prematurely. Now, such disc especially when it is a large disc is an expensive product both by the cost of the support and by that of the diamond segments.

La présente invention a pour but de remédier à ces inconvénients et concerne, à cet effet, un disque dia­manté du type ci-dessus, caractérisé en ce que le bord d'attaque de chaque dent 2 est muni d'un moyen de pro­tection 5 contre l'abrasion.The object of the present invention is to remedy these drawbacks and to this end relates to a diamond disc of the above type, characterized in that the leading edge of each tooth 2 is provided with a means of protection 5 against abrasion.

Grâce aux moyens de protection du bord d'attaque de chaque dent contre l'abrasion, les dents ne sont plus érodées en lame de couteau, ce qui évite que les seg­ments diamantés ne se détachent prématurément de chaque dent et, par ailleurs, lorsque les segments diamantés sont usés, cela permet de recharger le support avec de nouveaux segments diamantés. Cela prolonge d'autant la durée d'utilisation du support et diminue, par suite, le coût de l'ensemble de l'outil.Thanks to the means of protection of the leading edge of each tooth against abrasion, the teeth are no longer eroded into a knife blade, which prevents the diamond segments from detaching themselves prematurely from each tooth and, moreover, when the diamond segments are worn, this allows the support to be recharged with new diamond segments. This extends the duration of use of the support all the more and consequently reduces the cost of the whole tool.

Suivant une caractéristique particulièrement intéressante, le moyen de protection contre l'érosion et l'abrasion est constitué par une plaquette résistant à l'érosion, plaquette qui garnit le bord d'attaque de chaque dent.According to a particularly advantageous characteristic, the means of protection against erosion and abrasion consists of an erosion-resistant plate, a plate which lines the leading edge of each tooth.

Suivant une autre caractéristique, chaque plaquette de protection n'est prévue que d'un côté du bord d'atta­que de chaque dent, le côté sur lequel est prévue la plaquette alternant d'une dent à la dent suivante.According to another characteristic, each protective plate is provided only on one side of the leading edge of each tooth, the side on which the plate is provided alternating from one tooth to the next tooth.

Cette caractéristique est particulièrement intéressante, cela permet de réduire les dimensions des plaquettes de protection ainsi que le coût de la mise en place de celles-ci. De plus, comme les plaquettes ne sont pas toutes situées du même côté du support mais al­ternent d'une dent à l'autre, le flot de boue abrasive chemine alors en zigzag d'une encoche à l'autre.This characteristic is particularly advantageous, this makes it possible to reduce the dimensions of the protective plates as well as the cost of putting them in place. In addition, as the pads are not all located on the same side of the support but alternate from one tooth to another, the flow of abrasive mud then zigzag from one notch to another.

Suivant une autre caractéristique de l'invention, le moyen de protection contre l'abrasion et les plaquet­ tes de protection contre l'abrasion est en des matériaux choisis dans le groupe suivant :
- carbure de tungstène fritté,
- carbure de tungstène fondu,
- carbure de bore,
- carbure de titane,
- céramique,
- porcelaine.According to another characteristic of the invention, the means of protection against abrasion and the pads abrasion protection is made of materials chosen from the following group:
- sintered tungsten carbide,
- molten tungsten carbide,
- boron carbide,
- titanium carbide,
- ceramic,
- porcelain.

Suivant une autre caractéristique de l'invention, les plaquettes sont fixées sur au moins une partie du bord d'attaque de chaque dent, par soudure, brasure, collage, soudure par microfusion au laser.According to another characteristic of the invention, the plates are fixed on at least part of the leading edge of each tooth, by welding, soldering, bonding, welding by laser microfusion.

De manière générale, l'épaisseur des plaquettes est choisie en fonction de la durée de vie qu'on attend d'elles et qui peut correspondre à celle des segments diamantés.In general, the thickness of the inserts is chosen according to the service life expected of them and which may correspond to that of the diamond segments.

La présente invention sera décrite de manière plus détaillée à l'aide des dessins annexés dans lesquels :

  • - la figure 1 est une vue de face d'une partie de disque ce coupe selon l'art antérieur,
  • - la figure 2 est une vue en coupe transversale du disque de la figure 1,
  • - les figures 3 et 3A sont, respectivement, une vue en perspective et une vue en coupe transversale montrant l'usure en lame de couteau d'une dent portant un segment diamanté,
  • - la figure 4 est une vue en perspective de la par­tie périphérique d'un support de disque diamanté selon l'invention,
  • - la figure 5 est une vue de dessus du support de la figure 4.
The present invention will be described in more detail with the aid of the appended drawings in which:
  • FIG. 1 is a front view of a part of this cutting disc according to the prior art,
  • FIG. 2 is a cross-sectional view of the disk of FIG. 1,
  • FIGS. 3 and 3A are, respectively, a perspective view and a cross-section view showing the wear in the knife blade of a tooth carrying a diamond segment,
  • FIG. 4 is a perspective view of the peripheral part of a diamond disc support according to the invention,
  • - Figure 5 is a top view of the support of Figure 4.

Selon les figures 4 et 5, le disque diamanté de l'invention se compose d'un support 1 en tôle dont la périphérie comporte des dents 2 séparées par des enco­ches 3. Les dents 2 portent des éléments diamantés 4.According to FIGS. 4 and 5, the diamond disc of the invention consists of a support 1 made of sheet metal, the periphery of which comprises teeth 2 separated by notches 3. The teeth 2 carry diamond elements 4.

Le sens de rotation du disque est indiqué par la flèche A. Le disque diamanté comporte des moyens de pro­tection contre l'abrasion 5. Ces moyens sont de préfé­rence prévus seulement sur le bord d'attaque de chaque dent (selon le sens de rotation du disque, sens étant toujours le même).The direction of rotation of the disc is indicated by the arrow A. The diamond disc has means of protection against abrasion 5. These means are preferably provided only on the leading edge of each tooth (according to the direction of rotation of the disc, meaning being always the same).

Selon un mode de réalisation préférentiel, les moyens de protection 5 sont constitués, chaque fois, par une plaquette occupant la totalité du bord d'attaque de chaque dent 2 ou de préférence seulement un côté de cha­que dent ; les côtés sur lesquels son prévues les pla­quettes 5 constituant le moyen de protection, alternent d'une dent à l'autre comme cela est indiqué à la figure 5. Ces plaquettes de protection contre l'abrasion sont dans des matériaux résistant à l'abrasion et notamment du carbure de tungstène, fritté ou fondu, du carbure de bore, du carbure de titane, de céramique ou de la porcelaine.According to a preferred embodiment, the protection means 5 are constituted, each time, by a plate occupying the entire leading edge of each tooth 2 or preferably only one side of each tooth; the sides on which its provided the plates 5 constituting the protection means, alternate from one tooth to the other as indicated in FIG. 5. These abrasion protection plates are made of abrasion resistant materials and in particular tungsten carbide, sintered or molten, boron carbide, titanium carbide, ceramic or porcelain.

Ces plaquettes sont fixées sur le bord d'attaque de chaque dent par un moyen de fixation telle qu'une soudure, une brasure, un collage, une soudure par micro­fusion au laser, etc...These plates are fixed on the leading edge of each tooth by a fixing means such as a weld, a solder, a bonding, a weld by laser microfusion, etc.

La figure 5 qui est une vue de dessus développée du bord d'un disque diamanté montre plusieurs dents 2A, 2B, 2C, 2D du disque, les plaquettes diamantées 4A, 4B, 4C, 4D en pointillés, les pastilles 5B, 5C, 5D garnissant le bord d'attaque des dents correspondantes et occupant des positions alternées tantôt à gauche, tantôt à droite. Cette figure montre également par une flèche le sens de déplacement des dents.Figure 5 which is a top view developed from the edge of a diamond disc shows several teeth 2A, 2B, 2C, 2D of the disc, the diamond plates 4A, 4B, 4C, 4D in dotted lines, the pads 5B, 5C, 5D filling the leading edge of the corresponding teeth and occupying alternate positions sometimes to the left, sometimes to the right. This figure also shows by an arrow the direction of movement of the teeth.

Bien que la description ci-dessus concerne l'utili­sation d'une seule plaquette par bord d'attaque, le bord d'attaque de chaque dent peut être chargé de plusieurs plaquettes suivant la surface à protéger. Ces plaquettes peuvent également avoir des épaisseurs différentes.Although the above description relates to the use of a single plate per leading edge, the leading edge of each tooth can be loaded with several plates depending on the surface to be protected. These plates can also have different thicknesses.

Claims (5)

1°) Disque diamanté pour la coupe de produits durs ou abrasifs, tels que les pierres, les granits, les grès, les produits réfractaires, le béton ou produits similaires, disque composé d'un support en tôle dont la périphérie comporte des dents séparées par des encoches, ainsi que de segments diamantés de forme précise épou­sant la courbure de la périphérie du support et dont l'épaisseur est supérieure à celle de la tôle du support, disque caractérisé en ce que le bord d'attaque de chaque dent (2) est muni d'un moyen de protection (5) contre l'abrasion.1) Diamond blade for cutting hard or abrasive products, such as stones, granite, sandstone, refractory products, concrete or similar products, disk composed of a sheet metal support whose periphery has separate teeth by notches, as well as diamond segments of precise shape matching the curvature of the periphery of the support and whose thickness is greater than that of the sheet of the support, disc characterized in that the leading edge of each tooth (2 ) is provided with a means of protection (5) against abrasion. 2°) Disque diamanté selon la revendication 1, ca­ractérisé en ce que le moyen de protection (5) contre l'abrasion est constitué par une plaquette résistant à l'érosion.2 °) diamond blade according to claim 1, characterized in that the means of protection (5) against abrasion consists of a plate resistant to erosion. 3°) Disque diamanté selon l'une quelconque des re­vendications 1 et 2, caractérisé en ce que chaque pla­quette de protection (5) n'est prévue que d'un côté du bord d'attaque de chaque dent (2), le côté sur lequel est prévue la plaquette alternant d'une dent à la dent suivante.3) diamond blade according to any one of claims 1 and 2, characterized in that each protective plate (5) is only provided on one side of the leading edge of each tooth (2), the side on which is provided the plate alternating from one tooth to the next tooth. 4°) Disque diamanté selon l'une quelconque des re­vendications 1 à 3, caractérisé en ce que le moyen de protection (5) contre l'abrasion et les plaquettes de protection contre l'abrasion, est en des matériaux choi­sis dans le groupe suivant :
- carbure de tungstène fritté,
- carbure de tungstène fondu,
- carbure de bore,
- carbure de titane,
- céramique,
- porcelaine.4 °) diamond blade according to any one of claims 1 to 3, characterized in that the means of protection (5) against abrasion and the pads for protection against abrasion, is made of materials chosen from the following group :
- sintered tungsten carbide,
- molten tungsten carbide,
- boron carbide,
- titanium carbide,
- ceramic,
- porcelain. 5°) Disque diamanté selon la revendication 2, ca­ractérisé en ce que les plaquettes sont fixées sur au moins une partie du bord d'attaque de chaque dent, par soudure, brasure, collage, soudure par microfusion au laser.5 °) diamond blade according to claim 2, characterized in that the plates are fixed on the minus part of the leading edge of each tooth, by welding, soldering, gluing, laser microfusion welding.
EP19880403037 1987-06-10 1988-12-01 Diamond disc for cutting hard or abrasive products Withdrawn EP0372141A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8708053A FR2616369A1 (en) 1987-06-10 1987-06-10 DIAMOND DISK FOR CUTTING HARD OR ABRASIVE PRODUCTS

Publications (2)

Publication Number Publication Date
EP0372141A2 true EP0372141A2 (en) 1990-06-13
EP0372141A3 EP0372141A3 (en) 1990-11-28

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FR (1) FR2616369A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353045A (en) * 1999-08-05 2001-02-14 Marcrist Holdings Ltd Rotary abrasive cutting disc

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763258A (en) * 1954-07-01 1956-09-18 Hughes Blades Inc Construction of circular saws
US3122030A (en) * 1960-08-23 1964-02-25 Super Cut Method of assembling a rotary saw blade with peripheral diamond teeth
JPS59110563A (en) * 1982-12-17 1984-06-26 Asahi Daiyamondo Kogyo Kk Diamond cutting grindstone
US4462382A (en) * 1983-06-30 1984-07-31 Baron Frank C Circular saw for cutting green concrete and asphalt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763258A (en) * 1954-07-01 1956-09-18 Hughes Blades Inc Construction of circular saws
US3122030A (en) * 1960-08-23 1964-02-25 Super Cut Method of assembling a rotary saw blade with peripheral diamond teeth
JPS59110563A (en) * 1982-12-17 1984-06-26 Asahi Daiyamondo Kogyo Kk Diamond cutting grindstone
US4462382A (en) * 1983-06-30 1984-07-31 Baron Frank C Circular saw for cutting green concrete and asphalt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 230 (M-333)(1667) 23 octobre 1984, & JP-A-59 110563 (ASAHI DIAMOND KOGYO K.K.) 26 juin 1984, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353045A (en) * 1999-08-05 2001-02-14 Marcrist Holdings Ltd Rotary abrasive cutting disc

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Publication number Publication date
FR2616369A1 (en) 1988-12-16
EP0372141A3 (en) 1990-11-28

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