EP1304190A1 - Cutting tool for the removal of coatings from mineral substrates - Google Patents

Cutting tool for the removal of coatings from mineral substrates Download PDF

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Publication number
EP1304190A1
EP1304190A1 EP02102442A EP02102442A EP1304190A1 EP 1304190 A1 EP1304190 A1 EP 1304190A1 EP 02102442 A EP02102442 A EP 02102442A EP 02102442 A EP02102442 A EP 02102442A EP 1304190 A1 EP1304190 A1 EP 1304190A1
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EP
European Patent Office
Prior art keywords
segments
grinding wheel
wheel according
order
concentration
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Granted
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EP02102442A
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German (de)
French (fr)
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EP1304190B1 (en
Inventor
Jean-Pierre Chevalier
François Boland
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Carbodiam SA
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Carbodiam SA
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    • 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
    • B24D7/06—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 with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • 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
    • B24D7/10—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 with cooling provisions

Definitions

  • This segment thus performs the removal function of the coating, given the ability of the cutting edge to peel it, and this, stably, via a self-sharpening mechanism hard edge in contact with the mineral substrate, and the substrate polishing function by adapting judiciously the characteristics of the support layer to a grinding job.
  • the wear is therefore concentrated there and, quickly essential peeling function is no longer ensured.
  • the segments consist of two layers, one first hard and thin first layer 3 generally consisting of metallic binder enclosing fine diamond grains, the order of 0.2 mm in diameter circumscribed in strong concentration, of the order of C60 in FEPA concentration, and a second layer 4 generally consisting of a binder metallic enclosing larger diamond grains ( even conventional abrasive), of the order of 0.6 mm diameter circumscribed in lower concentration, of the order of C40 in FEPA concentration.

Abstract

The tool consists of a plate (10) with holes (11) and a series of angled cutting segments, each with a long (1) and a short (2) side and made from two layers (3, 4) of metal containing fine and coarser abrasive particles respectively. The forward-facing side of each segment is inclined at an acute angle (5) to the surface of the plate (10), and the segments are fitted in at least two different positions - one with their points parallel to the periphery of the plate, and the other with their short sides parallel to its edge.

Description

La présente invention concerne les d'outils de coupe destinés à l'enlèvement de revêtements déposés sur des substrats minéraux.The present invention relates to cutting tools intended for the removal of coatings deposited on mineral substrates.

On rencontre dans le domaine de la construction ou rénovation de bâtiment le problème de l'enlèvement de revêtements peints, projetés ou floqués sur du béton, du ciment ou des appareils de briques ou parpaings.We meet in the field of construction or building renovation the problem of removal of coatings painted, sprayed or flocked on concrete, cement or bricks or concrete blocks.

Ces revêtements sont notamment des peintures bitumineuses à base d'acryl, de latex ou d'époxy, des colles pour carrelage ou moquette, des plâtre ou crépi, voire des projections de produits ignifuges.These coatings are in particular paints bituminous based on acryl, latex or epoxy, adhesives for tiles or carpets, plaster or plaster, or even projections of flame retardants.

Les techniques d'enlèvement classiques sont lentes et peu productives (travail manuel avec spatule, burin) ou polluantes (utilisation de lessives chimiques) ou encore dommageables pour le substrat ( sablage qui dégrade l'état de surface du support du revêtement).Conventional removal techniques are slow and not very productive (manual work with spatula, chisel) or pollutants (use of chemical detergents) or damaging to the substrate (sanding which degrades the state surface of the coating support).

On connaít des outils adaptables sur des machines électriques constitués de fraises rotatives disposés sur la face d'un plateau entraíné en rotation par la machine. Les surfaces actives de ces fraises sont affûtées et réalisées le plus souvent en carbure de tungstène. On constate, cependant que l'abrasivité de la plupart des substrats minéraux émousse rapidement le taillant de ces fraisesWe know tools adaptable on machines machines made up of rotary cutters arranged on the face of a plate driven in rotation by the machine. The the active surfaces of these strawberries are sharpened and produced most often made of tungsten carbide. We aknowledge, however the abrasiveness of most substrates minerals quickly dull the cut of these strawberries

On connaít par EP 0 865 878 et EP 0 865 879 et US 3 745 719 des meules boisseau, en forme de plateau ou de cuvette, garnies de segments diamantés, qui, en contact avec un support minéral, conserveront le pouvoir de coupe jusqu'à la fin de vie, en révélant en cours d'usure des couches successives de diamant. Les meules décrites dans EP 0 865 878 et EP 0 865 879, qui sont considérées comme le plus proche état de la technique, comprennent des segments en forme d'accent circonflexe dont une aile s'étend sensiblement suivant le pourtour du disque.We know by EP 0 865 878 and EP 0 865 879 and US 3 745 719 cup wheels, in the form of a tray or bowl, lined with diamond segments, which, in contact with a mineral support, will keep the cutting power until the end of life, revealing during wear successive layers of diamond. The wheels described in EP 0 865 878 and EP 0 865 879, which are considered to be the closer to the prior art, include segments in the shape of a circumflex accent with one wing extending substantially around the periphery of the disc.

Ces outils sont, en fait destinés au meulage des substrats minéraux, les épaisseurs enlevées par meulage sont de l'ordre du millimètre et la protrusion des grains de l'ordre de quelques dixièmes est adaptée au processus de coupe et ménage un espace suffisant pour l'évacuation des copeaux.These tools are actually intended for grinding mineral substrates, the thicknesses removed by grinding are of the order of a millimeter and the protrusion of the grains of the order of a few tenths is adapted to the process of cut and spare sufficient space for the evacuation of shavings.

Pour des revêtements épais de plusieurs millimètres, parfois constitués de matière présentant des caractéristiques plastiques et se ramollissant au contact d'un outil échauffé par le processus de meulage, cette conception ne convient pas : les segments diamantés ne permettent qu'un faible taux d'enlèvement de matière et celui ci s'effondre rapidement dès que la matière ramollie vient colmater les surfaces actives des segments.For coatings several millimeters thick, sometimes made of material with plastic characteristics and softening on contact of a tool heated by the grinding process, this design is not suitable: diamond segments do not allow a low material removal rate and it collapses quickly as soon as the material softens clogs the active surfaces of the segments.

On connaít par la demande DE-101 39 762.3 une combinaison de la géométrie d'une fraise, capable d'un fort taux d'enlèvement de matière et de segments diamantés peu sensibles à l'usure en contact avec le substrat minéral.We know from the request DE-101 39 762.3 a combination of the geometry of a cutter, capable of a strong material removal rate and low diamond segments sensitive to wear in contact with the mineral substrate.

La fraise est composée de segments constitués d'une couche dure et mince à forte concentration de diamant inclinée par rapport à la surface de la monture de manière à ménager une coupe positive dans la matière à enlever et d'une couche de soutien, à l'arrière (par rapport au sens de la coupe) plus épaisse et, à plus faible concentration de diamant.The strawberry is made up of segments made up of a hard and thin layer with high concentration of diamond inclined relative to the surface of the frame so to provide a positive cut in the material to be removed and a support layer, at the back (relative to the direction of the cut) thicker and, at a lower concentration diamond.

Ce segment réalise ainsi la fonction d'enlèvement du revêtement, vu la capacité de l'arête de coupe de le peler, et ce, de manière stable, via un mécanisme d'auto affûtage de l'arête dure en contact avec le substrat minéral, et la fonction de polissage du substrat en adaptant judicieusement les caractéristiques de la couche de soutien à un emploi de meulage.This segment thus performs the removal function of the coating, given the ability of the cutting edge to peel it, and this, stably, via a self-sharpening mechanism hard edge in contact with the mineral substrate, and the substrate polishing function by adapting judiciously the characteristics of the support layer to a grinding job.

Une disposition géométrique adaptée des segments et de trous d'évacuation de copeaux prévus dans le support de l'outil améliore les performances de celui ci, monté sur une machine rotative de meulage raccordée à un aspirateur.A suitable geometric arrangement of the segments and chip evacuation holes provided in the holder the tool improves its performance, mounted on a rotary grinding machine connected to a vacuum cleaner.

La disposition géométrique décrite ci-dessus assure mécaniquement un travail de pelage du revêtement en passes parallèles. Malheureusement, il y aurait intérêt à croiser les passes. En outre, si elle est adaptée au travail en plongée en pleine matière dans le mode usuel de travail, en avalant, c'est-à-dire en progressant avec l'outil, d'une zone déjà débarrassée de son revêtement vers celui ci, seuls les coins extérieurs des segments de périphérie participent au processus de pelage.The geometric arrangement described above ensures mechanically peeling the coating in passes parallel. Unfortunately, there would be interest in crossing the passes. In addition, if it is suitable for work in immersed in full material in the usual mode of work, in swallowing, i.e. progressing with the tool, area already stripped of its coating towards this one, only the outer corners of the periphery segments participate in the peeling process.

L'usure y est donc concentrée et, rapidement la fonction essentielle de pelage n'est plus assurée.The wear is therefore concentrated there and, quickly essential peeling function is no longer ensured.

Par ailleurs, la fabrication industrielle de ces outils est malaisée car le positionnement précis de petits segments en vue de leur association au corps de meule par brasage ou fusion laser se prête mal à des automatisations du procédéFurthermore, the industrial manufacture of these tools is difficult because the precise positioning of small segments with a view to their association with the body of the grinding wheel by soldering or laser fusion does not lend itself to automation of the process

Enfin, les impositions de sécurité requises par EN 13236 § 5.5.7 et § 6.5.1 sont difficile à satisfaire vu la petitesse de la surface de contact entre le segment et le corps de meule.Finally, the safety requirements required by EN 13236 § 5.5.7 and § 6.5.1 are difficult to satisfy given the small size of the contact surface between the segment and the body of the wheel.

Le but de la présente invention est de remédier aux défauts entraínés par le sens de la coupe en passes parallèles. The object of the present invention is to remedy the defects caused by the direction of the pass cut parallel.

Un autre but de l'invention est d'éviter une usure concentrée en un point des segments abrasifs.Another object of the invention is to avoid wear concentrated in one point of the abrasive segments.

Un autre but de l'invention est de permettre un mode de fabrication en série performant.Another object of the invention is to allow a mode high-performance mass production.

Un autre but de l'invention est de garantir une meilleure sécurité d'emploi du disque.Another object of the invention is to guarantee a better disc safety.

L'objet de l'invention est une meule de surfaçage qui se différencie du plus proche état de la technique en ce que les segments sont disposés selon au moins deux dispositions différentes de façon à présenter , en cours du processus de coupe, l'arête de coupe selon au moins quatre inclinaisons différentes.The object of the invention is a surfacing wheel which differs from the closest state of the art in that that the segments are arranged in at least two different provisions so as to present, during the cutting process, the cutting edge according to at least four different inclinations.

Suivant un mode de réalisation avantageux, les segments présentent une face de coupe inclinée par rapport à son plan de base qui permet de ménager une coupe positive dans le sens de la coupe en rotation dans la matière à travailler.According to an advantageous embodiment, the segments have a cutting face inclined relative to to its basic plan which allows for a positive cut in the direction of the rotational cut in the material to be to work.

Suivant un mode de réalisation avantageux, les segments placé selon au moins une des dispositions présentent une face de coupe inclinée par rapport à son plan de base qui permet de ménager une coupe positive dans le sens de la coupe en avalant dans la matière à travailler.According to an advantageous embodiment, the segments placed according to at least one of the provisions have a cutting face inclined with respect to its basic plan which allows for a positive cut in the direction of the cut while swallowing in the material to to work.

Suivant un mode de réalisation préféré, les segments sont constitués de deux couches, la première dure et fine constituée en substance d'un liant métallique enserrant des grains d'abrasif fins (tels que du diamant), la deuxième constituée en substance d'un liant métallique enserrant des grains d'abrasif plus gros que ceux de la première couche.According to a preferred embodiment, the segments consist of two layers, the first hard and thin consisting essentially of a metallic binder enclosing fine abrasive grains (such as diamond), the second consisting essentially of a metallic binder enclosing abrasive grains larger than those of the first layer.

Dans ce cas, la première couche a, de façon avantageuse, des grains de l'ordre de 0.2 mm de diamètre circonscrit en forte concentration, de l'ordre de C60 en concentration FEPA.In this case, the first layer has, so advantageous, grains of the order of 0.2 mm in diameter circumscribed in high concentration, of the order of C60 in FEPA concentration.

De la même façon, la deuxième couche est avantageusement constituée de grains d'abrasif de l'ordre de 0.6 mm de diamètre circonscrit en plus faible concentration, de l'ordre de C40 en concentration FEPA.Similarly, the second layer is advantageously made up of abrasive grains of the order 0.6 mm smaller circumscribed diameter concentration, of the order of C40 in FEPA concentration.

Suivant un mode de réalisation avantageux, une partie des segments est disposée avec l'axe du profil tangent au cercle passant par la pointe du profil et qu'une autre partie des segments est disposée avec le flanc court tangent au cercle extérieur correspondant à la périphérie de l'outil.According to an advantageous embodiment, part segments is arranged with the axis of the profile tangent to circle passing through the tip of the profile and that another part of the segments is arranged with the short flank tangent to the outer circle corresponding to the periphery of the tool.

D'autres caractéristiques et avantages de l'invention ressortiront de la description ci-après de modes de réalisation particuliers, référence étant faite aux dessins annexés dans lesquels

  • La fig. 1 est une vue en perspective d'un segment abrasif de la meule de l'invention,
  • La fig. 2 est une vue en plan du segment de la Fig. 1,
  • La fig. 3 est une coupe de ce segment,
  • La fig. 4 est une vue en perspective d'une meule de l'invention,
  • Les fig. 5 et 6 sont des coupes selon un axe passant par deux types de segments de la meule de la fig. 4,
  • La fig. 7 est une vue schématique, en plan, de deux segments successifs de la même meule.
Other characteristics and advantages of the invention will emerge from the description below of particular embodiments, reference being made to the appended drawings in which
  • Fig. 1 is a perspective view of an abrasive segment of the grinding wheel of the invention,
  • Fig. 2 is a plan view of the segment of FIG. 1
  • Fig. 3 is a section of this segment,
  • Fig. 4 is a perspective view of a grinding wheel of the invention,
  • Figs. 5 and 6 are sections along an axis passing through two types of segments of the grinding wheel of FIG. 4
  • Fig. 7 is a schematic plan view of two successive segments of the same wheel.

La fig. 1 montre un segment abrasif de la meule de l'invention, en forme de soc de charrue avec deux flancs respectivement long 1 et court 2, constitué de deux couches 3 et 4 , la face 3 étant inclinée d'un angle 5 par rapport au plan de base 6 du segment.Fig. 1 shows an abrasive segment of the grinding wheel the invention, in the form of a ploughshare with two sides respectively long 1 and short 2, consisting of two layers 3 and 4, the face 3 being inclined at an angle 5 relative to to the base plane 6 of the segment.

La fig. 2 montre la position des deux flancs 1 et 2 par rapport à l'axe central 7 du segment.Fig. 2 shows the position of the two sides 1 and 2 relative to the central axis 7 of the segment.

Une coupe (fig. 3) de ce segment, passant par l'axe central 7 où l'on retrouve les deux couches 3 et 4 montre mieux que la face avant de la couche 3 est inclinée suivant un certain angle 16 par rapport au plan de base 6. (Cet angle correspond à la projection orthogonale de l'angle d'inclinaison 5 sur un plan vertical passant par l'axe de symétrie 7)A section (fig. 3) of this segment, passing through the axis central 7 where we find the two layers 3 and 4 shows better than the front side of layer 3 is inclined according to a certain angle 16 with respect to the base plane 6. (This angle corresponds to the orthogonal projection of the angle tilt 5 on a vertical plane passing through the axis of symmetry 7)

La fig. 4 offre une vue générale de la meule de l'invention, qui est composée d'un corps 10, généralement métallique et percé de trous 11, garni de ces segments disposé ici selon deux dispositions : quatre segments 8 (désignés sous le nom de « segments de travail ») sont disposés avec l'axe du profil tangent au cercle passant par la pointe du profil et quatre segments 9 ( désignés sous le nom de « segments d'amorçage ») dont le flanc court est tangent au cercle extérieur correspondant à la périphérie de l'outil. Le sens de rotation est repéré par une flèche 17.Fig. 4 provides a general view of the wheel the invention, which is composed of a body 10, generally metallic and drilled with holes 11, lined with these segments arranged here in two ways: four segments 8 (referred to as "work segments") are arranged with the axis of the profile tangent to the circle passing through the tip of the profile and four segments 9 (designated under the name of "boot segments") whose short flank is tangent to the outer circle corresponding to the periphery of the tool. The direction of rotation is marked with an arrow 17.

Des coupes effectuées suivant les axes AA et BB permettent de mieux se rendre compte de la configuration engendrée par les dispositions différentes des segments 8 et 9.Cuts made along the AA and BB axes allow you to better understand the configuration generated by the different arrangements of the segments 8 and 9.

La fig. 7 montre l'inclinaison des arêtes de coupe de deux segments successifs, de type 8 et 9, par rapport à un cercle concentrique au diamètre extérieur de la meule, c'est-à-dire en fait par rapport au vecteur vitesse de rotation, ces angles, désignés 12, 13 pour un segment placé selon la disposition 8 et 14, 15 pour un segment placé selon la disposition 9. On a, pour la compréhension du dessin fait figurer des valeurs numériques indicatives.Fig. 7 shows the inclination of the cutting edges of two successive segments, of type 8 and 9, with respect to a concentric circle with the outside diameter of the grinding wheel, that is to say in fact with respect to the velocity vector of rotation, these angles, designated 12, 13 for a segment placed according to arrangement 8 and 14, 15 for a segment placed according to provision 9. We have, for the understanding of drawing shows indicative numerical values.

La meule et ses segments représentés dans les figures sert à enlever des revêtements sur un support minéral (non représenté).The grinding wheel and its segments shown in the figures used to remove coatings on a mineral support (not represented).

Elle est constituée d'un corps généralement métallique pourvu de trous permettant, au cours de travail l'évacuation des copeaux via un aspirateur non représenté ici. Les segments sont constitués de deux couches, une première couche 3 dure et fine généralement constituée d'un liant métallique enserrant des grains de diamant fins, de l'ordre de 0.2 mm de diamètre circonscrit en forte concentration, de l'ordre de C60 en concentration FEPA, et une deuxième couche 4 généralement constituée d'un liant métallique enserrant des grains de diamant plus gros ( voire d'abrasif conventionnel), de l'ordre de 0.6 mm de diamètre circonscrit en plus faible concentration, de l'ordre de C40 en concentration FEPA.It consists of a generally metallic body provided with holes allowing, during work chip evacuation via a vacuum cleaner (not shown) here. The segments consist of two layers, one first hard and thin first layer 3 generally consisting of metallic binder enclosing fine diamond grains, the order of 0.2 mm in diameter circumscribed in strong concentration, of the order of C60 in FEPA concentration, and a second layer 4 generally consisting of a binder metallic enclosing larger diamond grains ( even conventional abrasive), of the order of 0.6 mm diameter circumscribed in lower concentration, of the order of C40 in FEPA concentration.

Les arêtes de coupe du segment présentent une inclinaison (angle 5) de manière à assurer une coupe positive, intéressante en service car elle force le segment à pénétrer dans la matière et à engager l'arête sous le revêtement.The cutting edges of the segment have a tilt (angle 5) so as to ensure a cut positive, interesting in service because it strengthens the segment to penetrate the material and to engage the edge under the coating.

Les 2 branches inégales 1 et 2 du segment et leur placement selon deux dispositions distinctes font que, en travail, en plongée, sans mouvement d'avance de la machine, une même zone de revêtement est attaquée selon deux arêtes de coupes différentes, ce qui réalise un travail en passes croisées et favorise la fragmentation du copeau; ce phénomène est plus marqué si le travail se réalise « en avalant » ( le mode usuel de travail). En progressant d'une zone débarrassée de son revêtement vers une zone garnie car par rapport à un point fixe, c'est un total de 4 arêtes d'inclinaison que l'on verra défiler.The 2 unequal branches 1 and 2 of the segment and their placement under two separate provisions means that, in work, diving, without advance movement of the machine, the same coating area is attacked along two edges different cuts, which does pass work crossed and promotes chip fragmentation; this phenomenon is more marked if the work is carried out “in swallowing ”(the usual way of working). By progressing zone stripped of its coating towards a furnished zone because relative to a fixed point, it is a total of 4 edges of inclination that we will see scroll.

Il va de soi que l'on peut, sur le même outil, combiner des segments suivant plus de deux dispositions angulaires telles que les dispositions 8 et 9It goes without saying that we can, on the same tool, combine segments following more than two layouts angular such as provisions 8 and 9

La disposition des segments selon le mode 9 a l'avantage complémentaire, dans le cas de mode de travail en avalant, de réaliser, vu l'inclinaison (angle 5) du segment vers l'extérieur, de ménager une coupe positive intéressante dans le sens de l'arête de travail, qui force le segment à pénétrer dans la matière et à engager l'arête sous le revêtement. L'engagement dans la matière se réalise le long de l'arête courte 2 d'un segment placé selon la disposition 9 et n'est pas concentré en un point.The arrangement of the segments according to mode 9 a the additional advantage, in the case of working mode swallowing, to realize, given the inclination (angle 5) of the outward segment, to make a positive cut interesting in the sense of the working edge, which forces the segment to penetrate the material and engage the edge under the covering. Commitment to the subject is realized along the short edge 2 of a segment placed according to the provision 9 and is not concentrated in one point.

La forme monobloc du segment, qui ménage plusieurs arêtes de coupe, est plus robuste intrinsèquement que la combinaison de petits segments placés selon des orientations variées car elle conduit à l'emploi d'un nombre plus réduit de segments tout en assurant au moins les mêmes fonctions.The monobloc shape of the segment, which spares several cutting edges, is inherently more robust than the combination of small segments placed according to varied orientations because it leads to the use of a fewer segments while ensuring at least the same functions.

Cet élément est plus aisé à manipuler ce qui permet d'automatiser les processus de fabrication et, vu sa plus grande surface de contact avec le support de meule 10, améliore les qualités de résistance mécanique requises par la norme EN 13236.This element is easier to handle which allows automate manufacturing processes and, given its more large contact surface with the wheel support 10, improves the qualities of mechanical resistance required by EN 13236 standard.

Claims (9)

Meule de surfaçage en forme de cuvette constituée d'un corps (10) percé de trous (11) garni de segments en forme de soc de charrue présentant 2 flancs inégaux (1) et (2) par rapport à la direction en rotation caractérisé en ce que les segments sont disposés selon au moins deux dispositions différentes (8) et (9) de façon à présenter , en cours du processus de coupe, l'arête de coupe selon au moins quatre inclinaisons différentes.Cup-shaped facing wheel consisting of a body (10) pierced with holes (11) furnished with ploughshare-shaped segments having 2 uneven sides (1) and (2) relative to the direction of rotation characterized in that the segments are arranged in at least two different arrangements (8) and (9) so as to present, during the cutting process, the cutting edge according to at least four different inclinations. Meule selon la revendication 1 caractérisée par en ce que les segments présentent une face de coupe inclinée d'un angle (5) par rapport à son plan de base (6) qui permettent de ménager une coupe positive dans le sens de la coupe en rotation dans la matière à travailler.Grinding wheel according to claim 1 characterized in that the segments have a cutting face inclined at an angle (5) relative to its base plane (6) which allow a positive cut to be made in the direction of the cutting in rotation in the material to work. Meule selon l'une quelconque des revendications 1 et 2 caractérisée en ce que les segments placé selon au moins une des dispositions (9) présentent une face de coupe (3) inclinée d'un angle (5) par rapport à son plan de base (6) qui permettent de ménager une coupe positive dans le sens de la coupe en avalant dans la matière à travailler.Grinding wheel according to any one of claims 1 and 2 characterized in that the segments placed according to at least one of the arrangements (9) have a cutting face (3) inclined at an angle (5) relative to its base plane (6) which make it possible to provide a positive cut in the direction of the cut by swallowing in the material to be worked. Meule selon l'une quelconque des revendications précédentes caractérisée en ce que les segments sont constitués de deux couches, la première dure et fine (3) constituée en substance d'un liant métallique enserrant des grains d'abrasif fins, la deuxième(4) constituée en substance d'un liant métallique enserrant des grains d'abrasif plus gros que ceux de la première couche. Grinding wheel according to any one of the preceding claims, characterized in that the segments consist of two layers, the first hard and fine (3) consisting essentially of a metallic binder enclosing fine abrasive grains, the second (4) consisting essentially of a metallic binder enclosing larger abrasive grains than those of the first layer. Meule suivant la revendication 4 caractérisée en ce que les grains d'abrasif sont constitués de diamant.Grinding wheel according to claim 4, characterized in that the abrasive grains consist of diamond. Meule selon l'une quelconque des revendications 4 et 5 caractérisée en ce que la première couche a des grains de l'ordre de 0.2 mm de diamètre circonscrit en forte concentration, de l'ordre de C60 en concentration FEPA.Grinding wheel according to any one of claims 4 and 5 characterized in that the first layer has grains of the order of 0.2 mm in diameter circumscribed in high concentration, of the order of C60 in FEPA concentration. Meule selon l'une quelconque des revendications 4, 5 et 6 caractérisée en ce que la deuxième couche est constituée de grains d'abrasif de l'ordre de 0.6 mm de diamètre circonscrit en plus faible concentration, de l'ordre de C40 en concentration FEPA.Grinding wheel according to any one of claims 4, 5 and 6 characterized in that the second layer consists of abrasive grains of the order of 0.6 mm in diameter circumscribed in lower concentration, of the order of C40 in concentration FEPA. Meule selon l'une quelconque des revendications précédentes caractérisée en ce qu'une partie des segments (8) est disposée avec l'axe du profil tangent au cercle passant par la pointe du profil.Grinding wheel according to any one of the preceding claims, characterized in that part of the segments (8) is arranged with the axis of the profile tangent to the circle passing through the tip of the profile. Meule selon l'une quelconque des revendications précédentes caractérisée en ce qu'une autre partie des segments (9) est disposée avec le flanc court tangent au cercle extérieur correspondant à la périphérie de l'outil.Grinding wheel according to any one of the preceding claims, characterized in that another part of the segments (9) is arranged with the short flank tangent to the outer circle corresponding to the periphery of the tool.
EP02102442A 2001-10-19 2002-10-15 Cutting tool for the removal of coatings from mineral substrates Expired - Lifetime EP1304190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE200100675 2001-10-19
BE2001/0675A BE1014434A3 (en) 2001-10-19 2001-10-19 Design and method of making cutting tool for removing coatings on the mineral substrates.

Publications (2)

Publication Number Publication Date
EP1304190A1 true EP1304190A1 (en) 2003-04-23
EP1304190B1 EP1304190B1 (en) 2005-10-12

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EP02102442A Expired - Lifetime EP1304190B1 (en) 2001-10-19 2002-10-15 Cutting tool for the removal of coatings from mineral substrates

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EP (1) EP1304190B1 (en)
AT (1) ATE306365T1 (en)
BE (1) BE1014434A3 (en)
DE (1) DE60206584T2 (en)
DK (1) DK1304190T3 (en)
ES (1) ES2249540T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1844900A1 (en) * 2006-04-10 2007-10-17 Toolpower GmbH Tool for machining surfaces of natural or artificial stone
US10456890B2 (en) 2012-12-31 2019-10-29 Saint-Gobain Abrasives, Inc. Abrasive article having shaped segments
CN115415945A (en) * 2022-09-28 2022-12-02 江苏锋泰工具有限公司 Pure dry type diamond grinding disc and manufacturing method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2712704B1 (en) 2012-09-27 2015-12-30 Illinois Tool Works Inc. Cup grinding wheel
DE202012009282U1 (en) 2012-09-27 2014-01-22 Heger Gmbh European Diamond Tools Cup grinding wheel
DE102013202204A1 (en) * 2013-02-11 2014-08-14 Robert Bosch Gmbh Grinding element for use in grinding disk for sharpening workpiece, has base body whose one base surface is arranged parallel to another base surface, where former base surface comprises partially concave curved side edge

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US1989215A (en) * 1933-04-25 1935-01-29 Harris Seybold Potter Co Segmental grinding wheel
US5243790A (en) * 1992-06-25 1993-09-14 Abrasifs Vega, Inc. Abrasive member
US5782682A (en) * 1995-06-09 1998-07-21 Ehwa Diamond Ind. Co. Ltd. Grinding wheel having abrasive tips
EP0865879A2 (en) * 1997-02-21 1998-09-23 S.A. Carbodiam Abrasive grinding disc and method of manufacturing the same
US5911620A (en) * 1997-02-25 1999-06-15 Hilti Aktiengesellschaft Pot-shaped grinding wheel

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989215A (en) * 1933-04-25 1935-01-29 Harris Seybold Potter Co Segmental grinding wheel
US5243790A (en) * 1992-06-25 1993-09-14 Abrasifs Vega, Inc. Abrasive member
US5782682A (en) * 1995-06-09 1998-07-21 Ehwa Diamond Ind. Co. Ltd. Grinding wheel having abrasive tips
EP0865879A2 (en) * 1997-02-21 1998-09-23 S.A. Carbodiam Abrasive grinding disc and method of manufacturing the same
US5911620A (en) * 1997-02-25 1999-06-15 Hilti Aktiengesellschaft Pot-shaped grinding wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1844900A1 (en) * 2006-04-10 2007-10-17 Toolpower GmbH Tool for machining surfaces of natural or artificial stone
US10456890B2 (en) 2012-12-31 2019-10-29 Saint-Gobain Abrasives, Inc. Abrasive article having shaped segments
CN115415945A (en) * 2022-09-28 2022-12-02 江苏锋泰工具有限公司 Pure dry type diamond grinding disc and manufacturing method thereof
CN115415945B (en) * 2022-09-28 2024-03-19 江苏锋泰工具有限公司 Pure dry diamond grinding disc and manufacturing method thereof

Also Published As

Publication number Publication date
ATE306365T1 (en) 2005-10-15
EP1304190B1 (en) 2005-10-12
DE60206584T2 (en) 2006-06-29
DK1304190T3 (en) 2006-02-20
BE1014434A3 (en) 2003-10-07
ES2249540T3 (en) 2006-04-01
DE60206584D1 (en) 2006-02-23

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