EP0938958A1 - Cutting segment - Google Patents

Cutting segment Download PDF

Info

Publication number
EP0938958A1
EP0938958A1 EP98870041A EP98870041A EP0938958A1 EP 0938958 A1 EP0938958 A1 EP 0938958A1 EP 98870041 A EP98870041 A EP 98870041A EP 98870041 A EP98870041 A EP 98870041A EP 0938958 A1 EP0938958 A1 EP 0938958A1
Authority
EP
European Patent Office
Prior art keywords
segment
cutting
segments
protrusions
saw
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.)
Granted
Application number
EP98870041A
Other languages
German (de)
French (fr)
Other versions
EP0938958B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PT98870041T priority Critical patent/PT938958E/en
Priority to DE1998607432 priority patent/DE69807432T2/en
Priority to EP19980870041 priority patent/EP0938958B1/en
Publication of EP0938958A1 publication Critical patent/EP0938958A1/en
Application granted granted Critical
Publication of EP0938958B1 publication Critical patent/EP0938958B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to cutting segments for circular saw or armor saw, these segments having a particular geometry. Segments of cut can be obtained by sintering a mixture of powders of a binder, and of an abrasive material such as diamond. Tools with these segments can be used for sawing hard materials, such as Pierre.
  • the invention also relates to a method of realization of the punches necessary for the confection of these segments.
  • the saw cutting segments have general in essence the shape of a parallelepiped rectangle of height X, width l and length L.
  • the form and operating principle of such segments are illustrated in figure 1. It is in the codification of the European Federation of Abrasive Producers that the height of a cutting segment is called "X".
  • Each cutting segment is mounted on the cutting blade saw through his foot.
  • the blade penetrates a material to be sawn, it does it by its face called “cutting face”, which cuts the material and determines the saw line, which increases as and when measurement of the sawing operation, while the segments sink into their height in the saw cut.
  • the segments wear out, which amounts to saying that their height X (between the cutting face and the foot of the segment) decreases.
  • Cutting segments are most often produced by sintering a powder of a binder, with a powder of a abrasive material such as diamond.
  • the powder mixture is introduced into a mold, then compressed with a punch.
  • This punch must be made of a material capable of resist the significant pressures implemented for the production of cutting segments, and must be able to resist to wear in the presence of an abrasive material. He must therefore be made of a hard material, and therefore difficult to to machine.
  • the cutting segments described in JP 01 109 079 A and WO 95/22446 have relatively shaped shapes complex, and the punches necessary for their production are therefore difficult to achieve.
  • the object of the present invention is precisely to provide a cutting tool segment that does not have the disadvantages mentioned above. Its purpose is to provide stepped cutting segments that allow for quick and easy transition between two successive stages.
  • a cutting segment for circular or armor saw substantially shaped of rectangular parallelepiped, having a height greater than 5 mm, and comprising several stages.
  • the segment width decreases in successive steps from cutting face of the segment at its base.
  • the landing between a floor and the next lower floor, width reduced, is a bearing parallel to the cutting face of the segment, extended by one or more protrusions of a width equal to the width of the upper floor, spanning a portion of the length and height from the lower floor.
  • the protrusions are advantageously in number one or two per floor.
  • these protrusions have the shape of a half-disc whose diameter is between an eighth and a third of the segment length and is preferably equal to a quarter of the length of the segment.
  • these protrusions have the shape of a triangle.
  • the invention also relates to a saw circular saw or armor saw on which are mounted cutting segments as described previously.
  • the invention also relates to a method of production of punches for the manufacture of segments of section as previously described, in which the successive bearings are obtained by a first machining plan, and the circular protrusions are obtained at by means of a second circular machining.
  • Figure 1 shows part of a saw blade 1 circular or armor blade according to the prior art, of which a segment 2, 8, 12, 16 is engaged in a line of saw 3.
  • the cutting segment 2, 8, 12, 16 is shaped substantially parallelepiped.
  • the actual sawing is achieved by pressing the cutting face 4 of segment 2 on the bottom of the saw line 3.
  • Abundant watering cools saw 1 and the material to be cut and take away the mud and sawdust.
  • Segments 2, 8, 12, 16 of saw 1 are evenly distributed along of the saw blade and are joined by their foot 5 by an appropriate method, usually soldering.
  • Figure 3 is a sectional view of a saw 1 circular according to the prior art, provided with segments stages 8, the stages of each segment being separated by a bearing parallel to the cutting face.
  • Segment 8 shown at the top of Figure 3 has a fraction of a wide stage 9 which is not yet completely worn out, and a narrow floor 10 not started. In the segment shown in bottom of the figure, the wide stage 9 is completely worn out, and the narrow stage 10 is being worn.
  • This saw circular is rotated around an axis 13. As this is set out above, in this embodiment of the prior art, the transition period between two floors 9 and 10 is particularly difficult.
  • Figure 4 shows a type of stepped segment 12 according to the prior art, the stages being separated by a bearing 11 inclined relative to the cutting face 4. This embodiment aims to improve the conditions of operation of saw 1 during the transition between two floors.
  • Figure 5 shows a circular saw 1 fitted with such segments 12, in which there is shown by the letter E the height of the segment portion extending to both on a wide floor 9 and on a narrow floor 10, hereinafter called the transition zone.
  • the transition zone we have represented the situation where the segment represented at the top of the figure begins the wear of the transition zone between a stage upper 9 of width L2 and a lower stage 10 of width L1, and the segment shown at the bottom of the figure has just finished the wear of this transition zone.
  • This situation can arise for example when the axis of rotation 13 of the saw 1 is offset by a false round E / 2 with respect to the axis of symmetry 14 of saw 1.
  • Figure 6 is a side view of the stepped segment according to prior art 12, shown above in the Figure 5, the floors being separated by an inclined landing with respect to the cutting face.
  • a bearing 11 parallel to the face of section 4 of segment 16 separates each of the stages 17, 18 from immediately lower floors 18, 19.
  • Each floor upper 17, 18 includes one or more protrusions 20, 21 extending the plan of the upper floor towards the low.
  • These protuberances can take any form suitable, for example a half-disc 20 (FIG. 7) or a triangle 21 (figure 8).
  • the number of floors can be between two and five, and is preferably from three.
  • the number of protrusions per level can be between one and five, and is preferably one or two.
  • protuberances 20.21 of the segments according to the invention have a contact surface 15, shown in hatched form at Figures 10 and 11, less than the contact surface, also shown in hatched form in FIG. 6, segments 12 according to the prior art.
  • These protuberances 20.21 therefore disappear quickly by wear against faces of the saw cut in the cut material, ensuring thus a rapid transition.
  • FIG. 12 graphically represents the contact surface S, that is to say the surface remaining to be consumed, as a function of the height x remaining to be consumed, for various types of segments according to the invention and according to the prior art.
  • the curve indicated by squares relates to a segment according to the prior art 12.
  • the curve indicated by triangles relates to a segment according to the invention 16 having protuberances 21 in the form of a triangle.
  • the curve indicated by circles relates to a segment according to the invention 16 having protuberances 20 in the form of a half-disc.
  • the area is shown in mm 2 as a function of the degree of wear x expressed in mm, for usual dimensions of segments.
  • the segments according to the prior art have a length L of 25 mm, and E is 2.5 mm.
  • the protrusions 20 in the form of a half-disc have a radius r of 2.5 mm.
  • E is 2.5 mm and U is 7.85 mm.
  • the contact surfaces of the segments according to the invention 16 are much smaller than the contact surfaces of the segments 12 according to the prior art.
  • the surfaces of contact of the segments according to the invention will therefore be more rapidly eroded during friction with the faces of the cut material, thus ensuring a much transition faster.
  • the two embodiments of protrusions of the above examples are not limiting of the invention. Other specific forms can be carried out without departing from the the invention.
  • the protrusions in the form of a half-disc 20 provide faster decay of the contact surface S.
  • La particular shape of the protrusions 20 in the form of a half-disc has the additional advantage that manufacturing punches necessary for their preparation is easy.
  • a punch intended to make bearings 11 parallel to the cutting face 4. This circular machining is easier than machining a triangle.
  • the punches to 11 parallel bearings are also easier to realize that level 11 inclined punches of art prior. It is even possible to reuse punches used for making segments according to art front 8 with bearings 11 not inclined.
  • the form of realization with protrusions in the form of a half-disc 20 is therefore particularly preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The cutting segment (16) for a circular saw has the shape of a parallelepiped rectangle with a height greater than 5 mm. It has several stages (17-19), the width of the segment decreasing by successive steps (11) from the cutting face (4) to its foot (5). The step (11) between one stage and the immediately lower stage of reduced width is parallel to the cutting face and extended by one or more protuberances (20). This protuberance has a width equal to the width of the upper stage (17,18) and extends over a portion of the length and height of the lower stage (18,19).

Description

La présente invention concerne des segments de coupe pour scie circulaire ou scie à lame d'armure, ces segments présentant une géométrie particulière. Des segments de coupe peuvent être obtenus par frittage d'un mélange de poudres d'un liant, et d'un matériau abrasif tel que le diamant. Les outils comportant ces segments peuvent être utilisés pour le sciage de matériaux durs, tels que la pierre.The present invention relates to cutting segments for circular saw or armor saw, these segments having a particular geometry. Segments of cut can be obtained by sintering a mixture of powders of a binder, and of an abrasive material such as diamond. Tools with these segments can be used for sawing hard materials, such as Pierre.

L'invention concerne également une méthode de réalisation des poinçons nécessaires à la confection de ces segments.The invention also relates to a method of realization of the punches necessary for the confection of these segments.

Les segments de coupe pour scies présentent en général en substance la forme d'un parallélépipède rectangle de hauteur X, de largeur l et de longueur L. La forme et le principe de fonctionnement de tels segments sont illustrés à la figure 1. C'est dans la codification de la Fédération Européenne des Producteurs d'Abrasifs que la hauteur d'un segment de coupe est appelée "X".The saw cutting segments have general in essence the shape of a parallelepiped rectangle of height X, width l and length L. The form and operating principle of such segments are illustrated in figure 1. It is in the codification of the European Federation of Abrasive Producers that the height of a cutting segment is called "X".

Chaque segment de coupe est monté sur la lame de scie par l'intermédiaire de son pied. Lorsque la lame pénètre dans un matériau à scier, elle le fait par sa face dite "face de coupe", qui entaille le matériau et détermine le trait de scie, qui s'agrandit au fur et à mesure de l'opération de sciage, tandis que les segments s'enfoncent sur leur hauteur dans le trait de scie. Simultanément, les segments s'usent, ce qui revient à dire que leur hauteur X (entre la face de coupe et le pied du segment) diminue.Each cutting segment is mounted on the cutting blade saw through his foot. When the blade penetrates a material to be sawn, it does it by its face called "cutting face", which cuts the material and determines the saw line, which increases as and when measurement of the sawing operation, while the segments sink into their height in the saw cut. Simultaneously, the segments wear out, which amounts to saying that their height X (between the cutting face and the foot of the segment) decreases.

Dans le but de conférer à l'outil de coupe la durée de vie la plus longue possible, on donne naturellement aux segments une hauteur X importante, c'est-à-dire supérieure à une valeur de 7 à 8 mm.In order to give the cutting tool the duration as long as possible, we naturally give segments a significant height X, that is to say greater at a value of 7 to 8 mm.

Il est souhaitable d'utiliser un arrosage abondant au moyen d'un fluide de refroidissement, qui refroidit l'outil et le matériau en cours de coupe, et élimine les copeaux et boues résultant de la coupe. It is desirable to use abundant watering by means of a coolant, which cools the tool and the material being cut, and eliminates chips and sludge from cutting.

On a cependant observé qu'une lame de scie comportant des segments de hauteur élevée, c'est-à-dire supérieure à une valeur de 7 à 8 mm, et utilisée en présence d'arrosage, présente une instabilité latérale. En effet, si la lame n'est pas parfaitement centrée dans le trait de scie, la pression hydrodynamique du fluide de refroidissement est inégale et s'applique avec plus de force sur la face de la lame éloignée du matériau coupé, appuyant ainsi l'autre face de la lame contre le matériau coupé, et les segments de coupe entament le matériau à scier par d'autres parties que leur face de coupe. Cette situation est illustrée à la figure 2. La lame peut alors se redresser sous l'effet de sa rigidité, et des vibrations nuisibles peuvent s'ensuivre.However, it has been observed that a saw blade comprising segments of high height, that is to say greater than a value of 7 to 8 mm, and used in presence of watering, presents lateral instability. In effect, if the blade is not perfectly centered in the sawtooth, the hydrodynamic pressure of the cooling is uneven and applies with more than force on the face of the blade away from the cut material, thus pressing the other side of the blade against the material cut, and the cutting segments start the material to be saw by parts other than their cutting face. This situation is illustrated in figure 2. The blade can then straighten under the effect of its rigidity, and harmful vibrations may ensue.

La pratique montre que des segments de hauteur inférieure à 7 mm ne présentent pas cet inconvénient.Practice shows that height segments less than 7 mm do not have this drawback.

On a donc cherché à réaliser des segments présentant à la fois une durée de vie importante, et ne présentant pas d'instabilité latérale. Cela a été réalisé en donnant aux faces latérales des segments une forme étagée (dite parfois forme 〈〈 de pagode 〉〉), représentée à la figure 3. Deux étages successifs d'un segment sont séparés par un palier parallèle à la face de coupe. La largeur d'un segment se réduit donc à chaque palier, de la face de coupe au pied du segment. Cette forme de réalisation confère à l'outil de coupe une dépouille croissante. De tels segments permettent effectivement d'éviter ou réduire l'instabilité latérale décrite ci-dessus. Ils présentent néanmoins le grave inconvénient suivant: les segments d'une scie s'usent en principe de manière uniforme et tous ceux-ci franchissent simultanément le degré d'usure correspondant à un étage. Dans la pratique cependant, de légères imperfections du centrage de la scie, de la géométrie de celle-ci et des segments eux-mêmes font que certains segments travaillent encore au niveau d'un étage supérieur large, alors que d'autres segments travaillent déjà au niveau de l'étage inférieur, de largeur plus réduite. Il en résulte alors, pendant la période de transition entre deux étages successifs, un fonctionnement saccadé du sciage, un travail bruyant, des ébréchures, et un état de la surface sciée de mauvaise qualité.We therefore sought to produce segments presenting both an important lifespan, and not presenting no lateral instability. This was achieved by giving on the lateral faces of the segments a stepped shape (called sometimes form 〈〈 of a pagoda 〉〉), shown in Figure 3. Two successive stages of a segment are separated by a bearing parallel to the cutting face. The width of a segment is therefore reduced at each level, from the face of cut at the foot of the segment. This embodiment gives the cutting tool an increasing clearance. Of such segments effectively avoid or reduce the lateral instability described above. They present nevertheless the following serious drawback: the segments of a saw wear in principle uniformly and all these simultaneously cross the degree of wear corresponding to a floor. In practice, however, slight imperfections in the centering of the saw, geometry of it and the segments themselves make that some segments are still working on a level upper wide, while other segments are working already at the level of the lower floor, more width scaled down. This then results, during the period of transition between two successive stages, one jerky sawing, noisy work, chips, and a bad sawn surface condition quality.

On connaít par les documents JP 01 109 079 A et WO 95/22446 un type de segment dont la forme vise à permettre d'éviter dans une certaine mesure ces inconvénients. Comme on le voit aux figures 4 et 6, dans les segments de ce type, les paliers de séparation entre étages successifs ne sont pas parallèles à la face de coupe, mais inclinés par rapport à celle-ci.We know from documents JP 01 109 079 A and WO 95/22446 a type of segment whose shape aims to allow to some extent avoid these drawbacks. As seen in Figures 4 and 6, in the segments of this type, the stages of separation between successive stages do not are not parallel to the cutting face, but inclined by compared to it.

Ceci a en principe pour effet de rendre le passage d'un étage à l'autre plus progressif. Néanmoins, on constate que la forme des segments décrite par JP 01 109 079 A ou WO 95/22446 ne permet pas d'éviter que, dans la durée de transition entre deux étages, des vibrations ne surviennent. En outre, la durée de la transition d'un étage à l'autre est beaucoup trop importante.This in principle has the effect of making the passage from one stage to the other more progressive. However, we notes that the shape of the segments described by JP 01 109 079 A or WO 95/22446 does not prevent that, in the transition time between two stages, vibrations do not arise. In addition, the duration of the transition from one floor to floor is far too large.

Les segments de coupe sont le plus souvent produits par frittage d'une poudre d'un liant, avec une poudre d'un matériau abrasif tel que le diamant. Le mélange de poudres est introduit dans un moule, puis comprimé par un poinçon. Ce poinçon doit être réalisé dans un matériau capable de résister aux pressions importantes mises en oeuvre pour la production des segments de coupe, et doit pouvoir résister à l'usure en présence d'un matériau abrasif. Il doit donc être réalisé dans un matériau dur, et donc difficile à usiner. Les segments de coupe décrits dans JP 01 109 079 A et WO 95/22446 présentent des formes relativement complexes, et les poinçons nécessaires à leur production sont donc difficiles à réaliser.Cutting segments are most often produced by sintering a powder of a binder, with a powder of a abrasive material such as diamond. The powder mixture is introduced into a mold, then compressed with a punch. This punch must be made of a material capable of resist the significant pressures implemented for the production of cutting segments, and must be able to resist to wear in the presence of an abrasive material. He must therefore be made of a hard material, and therefore difficult to to machine. The cutting segments described in JP 01 109 079 A and WO 95/22446 have relatively shaped shapes complex, and the punches necessary for their production are therefore difficult to achieve.

La présente invention a précisément pour but de fournir un segment d'outil de coupe qui ne présente pas les inconvénients mentionnés ci-dessus. Elle a pour but de fournir des segments de coupe étagés qui permettent une transition rapide et aisée entre deux étages successifs.The object of the present invention is precisely to provide a cutting tool segment that does not have the disadvantages mentioned above. Its purpose is to provide stepped cutting segments that allow for quick and easy transition between two successive stages.

L'invention porte sur un segment de coupe pour scie circulaire ou à lame d'armure, en substance en forme de parallélépipède rectangle, présentant une hauteur supérieure à 5 mm, et comportant plusieurs étages. La largeur du segment décroít par paliers successifs de la face de coupe du segment à son pied. Le palier entre un étage et l'étage immédiatement inférieur, de largeur réduite, est un palier parallèle à la face de coupe du segment, prolongé par une ou plusieurs protubérances d'une largeur égale à la largeur de l'étage supérieur, s'étendant sur une portion de la longueur et de la hauteur de l'étage inférieur.A cutting segment for circular or armor saw, substantially shaped of rectangular parallelepiped, having a height greater than 5 mm, and comprising several stages. The segment width decreases in successive steps from cutting face of the segment at its base. The landing between a floor and the next lower floor, width reduced, is a bearing parallel to the cutting face of the segment, extended by one or more protrusions of a width equal to the width of the upper floor, spanning a portion of the length and height from the lower floor.

Les protubérances sont avantageusement au nombre de une ou deux par étage.The protrusions are advantageously in number one or two per floor.

Dans une variante préférée de l'invention, ces protubérances ont la forme d'un demi-disque dont le diamètre est compris entre le huitième et le tiers de la longueur du segment et est de préférence égal au quart de la longueur du segment.In a preferred variant of the invention, these protrusions have the shape of a half-disc whose diameter is between an eighth and a third of the segment length and is preferably equal to a quarter of the length of the segment.

Dans une autre variante de l'invention, ces protubérances ont la forme d'un triangle.In another variant of the invention, these protrusions have the shape of a triangle.

L'invention porte également sur une scie circulaire ou une scie à lame d'armure sur laquelle sont montés des segments de coupe tels que décrits précédemment.The invention also relates to a saw circular saw or armor saw on which are mounted cutting segments as described previously.

L'invention porte encore sur un procédé de réalisation de poinçons pour la fabrication de segments de coupe tels que décrits précédemment, dans lequel les paliers successifs sont obtenus par un premier usinage plan, et les protubérances circulaires sont obtenues au moyen d'un second usinage circulaire.The invention also relates to a method of production of punches for the manufacture of segments of section as previously described, in which the successive bearings are obtained by a first machining plan, and the circular protrusions are obtained at by means of a second circular machining.

D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description qui suit, référence étant faite aux figures annexées.

  • La figure 1 est une vue schématique en coupe d'une partie d'une scie munie de segments diamantés suivant l'art antérieur en cours de travail dans un matériau dur.
  • La figure 2 est une vue semblable à celle de la figure 1, le segment étant excentré dans le trait de scie.
  • La figure 3 est une vue en coupe d'une autre scie suivant l'art antérieur, munie de segments étagés, les étages successifs étant séparés par un palier parallèle à la face de coupe.
  • La figure 4 est une vue en perspective cavalière d'un segment suivant l'art antérieur, les étages étant séparés par un palier incliné par rapport à la face de coupe.
  • La figure 5 est une vue en coupe d'une scie circulaire suivant l'art antérieur, munie de segments étagés, les étages étant séparés par un palier incliné par rapport à la face de coupe.
  • La figure 6 est une vue latérale d'un segment étagé suivant l'art antérieur, les étages étant séparés par un palier incliné par rapport à la face de coupe.
  • La figure 7 est une vue latérale d'une première forme d'exécution d'un segment suivant l'invention.
  • La figure 8 est une vue latérale d'une seconde forme d'exécution d'un segment suivant l'invention.
  • La figure 9 est une vue en perspective cavalière d'une troisième forme d'exécution d'un segment suivant l'invention.
  • Les figures 10 et 11 illustrent le calcul de la surface de contact des segments avec les faces du trait de scie.
  • La figure 12 est un graphique donnant cette surface de contact, en fonction de la hauteur x restant à consommer, pour diverses formes de segments suivant l'invention et suivant l'art antérieur.
    • Other characteristics and advantages of the invention will appear on reading the description which follows, reference being made to the appended figures.
  • Figure 1 is a schematic sectional view of a part of a saw provided with diamond segments according to the prior art during work in a hard material.
  • Figure 2 is a view similar to that of Figure 1, the segment being eccentric in the saw cut.
  • Figure 3 is a sectional view of another saw according to the prior art, provided with stepped segments, the successive stages being separated by a bearing parallel to the cutting face.
  • Figure 4 is a perspective view of a segment according to the prior art, the stages being separated by a bearing inclined relative to the cutting face.
  • Figure 5 is a sectional view of a circular saw according to the prior art, provided with stepped segments, the stages being separated by a bearing inclined relative to the cutting face.
  • Figure 6 is a side view of a stepped segment according to the prior art, the stages being separated by a bearing inclined relative to the cutting face.
  • Figure 7 is a side view of a first embodiment of a segment according to the invention.
  • Figure 8 is a side view of a second embodiment of a segment according to the invention.
  • Figure 9 is a perspective view of a third embodiment of a segment according to the invention.
  • Figures 10 and 11 illustrate the calculation of the contact surface of the segments with the faces of the saw cut.
  • FIG. 12 is a graph giving this contact surface, as a function of the height x remaining to be consumed, for various shapes of segments according to the invention and according to the prior art.

    • La figure 1 montre une partie d'une lame de scie 1 circulaire ou à lame d'armure suivant l'art antérieur, dont un segment 2, 8, 12, 16 est engagé dans un trait de scie 3. Le segment de coupe 2, 8, 12, 16 est de forme sensiblement parallélépipédique. Le sciage proprement dit est réalisé par l'appui de la face de coupe 4 du segment 2 sur le fond du trait de scie 3. Un arrosage abondant permet de refroidir la scie 1 et le matériau à couper et d'emporter les boues et copeaux de sciage. Les segments 2, 8, 12, 16 de la scie 1 sont répartis régulièrement le long de la lame de scie et sont solidarisés par leur pied 5 par une méthode appropriée, généralement le brasage.Figure 1 shows part of a saw blade 1 circular or armor blade according to the prior art, of which a segment 2, 8, 12, 16 is engaged in a line of saw 3. The cutting segment 2, 8, 12, 16 is shaped substantially parallelepiped. The actual sawing is achieved by pressing the cutting face 4 of segment 2 on the bottom of the saw line 3. Abundant watering cools saw 1 and the material to be cut and take away the mud and sawdust. Segments 2, 8, 12, 16 of saw 1 are evenly distributed along of the saw blade and are joined by their foot 5 by an appropriate method, usually soldering.

    Si une légère dissymétrie survient, comme cela est représenté à la figure 2, la pression hydrodynamique du fluide de refroidissement s'applique de manière préférentielle sur la face de la scie la plus éloignée du matériau à couper, et le segment 2 est alors appuyé vers l'autre face du trait de scie 3. Il en résulte un travail irrégulier, bruyant et de qualité médiocre.If a slight asymmetry occurs, as is shown in Figure 2, the hydrodynamic pressure of the coolant is applied so preferential on the face of the saw furthest from material to be cut, and segment 2 is then pressed towards the other side of the saw cut 3. This results in work irregular, noisy and of poor quality.

    La figure 3 est une vue en coupe d'une scie 1 circulaire suivant l'art antérieur, munie de segments étagés 8, les étages de chaque segment étant séparés par un palier parallèle à la face de coupe. Le segment 8 figurant en haut de la figure 3 comporte une fraction d'un étage large 9 qui n'est pas encore complètement usé, et un étage étroit 10 non entamé. Dans le segment figurant en bas de la figure, l'étage large 9 est complètement usé, et l'étage étroit 10 est en cours d'usure. Cette scie circulaire est mise en rotation autour d'un axe 13. Comme cela est exposé ci-dessus, dans cette forme de réalisation de l'art antérieur, la période de transition entre deux étages 9 et 10 est particulièrement difficile.Figure 3 is a sectional view of a saw 1 circular according to the prior art, provided with segments stages 8, the stages of each segment being separated by a bearing parallel to the cutting face. Segment 8 shown at the top of Figure 3 has a fraction of a wide stage 9 which is not yet completely worn out, and a narrow floor 10 not started. In the segment shown in bottom of the figure, the wide stage 9 is completely worn out, and the narrow stage 10 is being worn. This saw circular is rotated around an axis 13. As this is set out above, in this embodiment of the prior art, the transition period between two floors 9 and 10 is particularly difficult.

    La figure 4 montre un type de segment étagé 12 suivant l'art antérieur, les étages étant séparés par un palier 11 incliné par rapport à la face de coupe 4. Cette forme de réalisation vise à améliorer les conditions de fonctionnement de la scie 1 lors de la transition entre deux étages.Figure 4 shows a type of stepped segment 12 according to the prior art, the stages being separated by a bearing 11 inclined relative to the cutting face 4. This embodiment aims to improve the conditions of operation of saw 1 during the transition between two floors.

    La figure 5 montre une scie 1 circulaire munie de tels segments 12, dans lesquels on a représenté par la lettre E la hauteur de la portion du segment s'étendant à la fois sur un étage large 9 et sur un étage étroit 10, appelée ci-après zone de transition. On a représenté la situation où le segment représenté en haut de la figure commence l'usure de la zone de transition entre un étage supérieur 9 de largeur L2 et un étage inférieur 10 de largeur L1, et le segment représenté en bas de la figure vient de terminer l'usure de cette zone de transition. Cette situation peut se présenter par exemple lorsque l'axe de rotation 13 de la scie 1 est excentré d'un fauxrond E/2 par rapport à l'axe de symétrie 14 de la scie 1.Figure 5 shows a circular saw 1 fitted with such segments 12, in which there is shown by the letter E the height of the segment portion extending to both on a wide floor 9 and on a narrow floor 10, hereinafter called the transition zone. We have represented the situation where the segment represented at the top of the figure begins the wear of the transition zone between a stage upper 9 of width L2 and a lower stage 10 of width L1, and the segment shown at the bottom of the figure has just finished the wear of this transition zone. This situation can arise for example when the axis of rotation 13 of the saw 1 is offset by a false round E / 2 with respect to the axis of symmetry 14 of saw 1.

    La pratique montre cependant que les segments étagés 12 à paliers 11 inclinés par rapport à la face de coupe 4 n'apportent pas de solution satisfaisante aux problèmes rencontrés avec les segments 8 à paliers 11 parallèles à la face de coupe. De plus ils rendent la durée de la transition plus longue qu'avec les segments à paliers parallèles à la face de coupe 4.However, practice shows that the stepped segments 12 with bearings 11 inclined with respect to the cutting face 4 do not provide a satisfactory solution to the problems encountered with segments 8 with bearings 11 parallel to the cutting face. In addition they make the duration of the longer transition than with stepped segments parallel to the cutting face 4.

    La figure 6 est une vue latérale du segment étagé suivant l'art antérieur 12, représenté au-dessus à la figure 5, les étages étant séparés par un palier incliné par rapport à la face de coupe.Figure 6 is a side view of the stepped segment according to prior art 12, shown above in the Figure 5, the floors being separated by an inclined landing with respect to the cutting face.

    On a donc cherché à réaliser des segments 16 de coupe qui permettent une transition progressive entre étages, tout en assurant la rapidité de cette transition.We therefore sought to produce segments 16 of cuts that allow a gradual transition between floors, while ensuring the speed of this transition.

    Un tel objectif est atteint par les segments suivant l'invention 16, dont des exemples de réalisation sont représentés aux figures 7, 8 et 9. Dans ces segments suivant l'invention, un palier 11 parallèle à la face de coupe 4 du segment 16 sépare chacun des étages 17, 18 des étages immédiatement inférieurs 18, 19. Chaque étage supérieur 17, 18 comprend une ou plusieurs protubérances 20, 21 prolongeant le plan de l'étage supérieur vers le bas. Ces protubérances peuvent présenter toute forme appropriée, par exemple un demi-disque 20 (figure 7) ou un triangle 21 (figure 8). Le nombre d'étages peut être compris entre deux et cinq, et est préférentiellement de trois. Le nombre de protubérances par palier peut être compris entre un et cinq, et est préférentiellement de un ou deux.Such an objective is achieved by the following segments invention 16, of which exemplary embodiments are shown in Figures 7, 8 and 9. In these segments according to the invention, a bearing 11 parallel to the face of section 4 of segment 16 separates each of the stages 17, 18 from immediately lower floors 18, 19. Each floor upper 17, 18 includes one or more protrusions 20, 21 extending the plan of the upper floor towards the low. These protuberances can take any form suitable, for example a half-disc 20 (FIG. 7) or a triangle 21 (figure 8). The number of floors can be between two and five, and is preferably from three. The number of protrusions per level can be between one and five, and is preferably one or two.

    L'amélioration du comportement des segments suivant l'invention est obtenue par le fait que les protubérances 20,21 des segments suivant l'invention présentent une surface de contact 15, représentée sous forme hachurée aux figures 10 et 11, inférieure à la surface de contact, représentée également sous forme hachurée à la figure 6, des segments 12 suivant l'art antérieur. Ces protubérances 20,21 disparaissent donc rapidement par usure contre les faces du trait de scie dans le matériau coupé, assurant ainsi une transition rapide.Improvement of the behavior of the following segments the invention is obtained by the fact that the protuberances 20.21 of the segments according to the invention have a contact surface 15, shown in hatched form at Figures 10 and 11, less than the contact surface, also shown in hatched form in FIG. 6, segments 12 according to the prior art. These protuberances 20.21 therefore disappear quickly by wear against faces of the saw cut in the cut material, ensuring thus a rapid transition.

    Dans le cas de la protubérance en forme de demi-disque, la surface de contact 15, représentée hachurée à la figure 10, est donnée par S = π*r 2 2 -[x * r 2 - x 2 + r 2 * Arcsin( x r )] où r est le rayon du demi-disque et x le degré d'usure de la protubérance, mesuré à partir du palier séparant l'étage large de l'étage plus étroit.In the case of the half-disc-shaped protuberance, the contact surface 15, shown hatched in FIG. 10, is given by S = π * r 2 2 - [ x * r 2 - x 2 + r 2 * Bow sin ( x r )] where r is the radius of the half-disc and x the degree of wear of the protuberance, measured from the bearing separating the wide stage from the narrower stage.

    Dans le cas de la protubérance en forme de triangle, la surface de contact, représentée hachurée à la figure 11, est donnée par S = U*(E-x)2 2*E où U est la base du triangle, et E sa hauteur.In the case of the triangle-shaped protuberance, the contact surface, shown hatched in FIG. 11, is given by S = U * ( E - x ) 2 2 * E where U is the base of the triangle, and E is its height.

    Dans le cas de la zone de contact 15, en forme de triangle, séparant deux étages d'un segment suivant l'art antérieur 12, la surface de contact, représentée hachurée à la figure 6, est donnée par S = L*(E-x)2 2*E où L est la longueur d'un segment 12, et E la différence de hauteur de l'étage large 9 entre les deux extrémités de la longueur du segment 12.In the case of the contact zone 15, in the shape of a triangle, separating two stages of a segment according to the prior art 12, the contact surface, represented hatched in FIG. 6, is given by S = L * ( E - x ) 2 2 * E where L is the length of a segment 12, and E the difference in height of the wide stage 9 between the two ends of the length of the segment 12.

    La figure 12 représente graphiquement la surface de contact S, c'est-à-dire la surface restant à consommer, en fonction de la hauteur x restant à consommer, pour divers type de segments suivant l'invention et suivant l'art antérieur. La courbe indiquée par des carrés est relative à un segment suivant l'art antérieur 12. La courbe indiquée par des triangles est relative à un segment suivant l'invention 16 présentant des protubérances 21 en forme de triangle. La courbe indiquée par des ronds est relative à un segment suivant l'invention 16 présentant protubérances 20 en forme de demi-disque. On a représenté la surface en mm2 en fonction du degré d'usure x exprimé en mm, pour des dimensions usuelles de segments. Les segments suivant l'art antérieur ont une longueur L de 25 mm, et E vaut 2,5 mm. Les protubérances 20 en forme de demi-disque ont un rayon r de 2,5 mm. Pour les protubérances 21 en forme de triangle, E vaut 2,5 mm et U vaut 7,85 mm. On compare ainsi trois cas de zones de transition aptes à prendre en charge un défaut géométrique de 2,5 mm.FIG. 12 graphically represents the contact surface S, that is to say the surface remaining to be consumed, as a function of the height x remaining to be consumed, for various types of segments according to the invention and according to the prior art. The curve indicated by squares relates to a segment according to the prior art 12. The curve indicated by triangles relates to a segment according to the invention 16 having protuberances 21 in the form of a triangle. The curve indicated by circles relates to a segment according to the invention 16 having protuberances 20 in the form of a half-disc. The area is shown in mm 2 as a function of the degree of wear x expressed in mm, for usual dimensions of segments. The segments according to the prior art have a length L of 25 mm, and E is 2.5 mm. The protrusions 20 in the form of a half-disc have a radius r of 2.5 mm. For the triangular protrusions 21, E is 2.5 mm and U is 7.85 mm. We thus compare three cases of transition zones capable of handling a geometric defect of 2.5 mm.

    Ainsi qu'on le voit aisément sur cette figure 12, les surfaces de contact des segments suivant l'invention 16 sont largement inférieures aux surfaces de contact des segments 12 suivant l'art antérieur. Les surfaces de contact des segments suivant l'invention seront donc plus rapidement érodées lors de frottements avec les faces du matériau coupé, assurant ainsi une transition beaucoup plus rapide. Les deux formes de réalisation des protubérances des exemples ci-dessus ne sont pas limitatives de l'invention. D'autres formes particulières peuvent être réalisées sans sortir du cadre de l'invention.As we can easily see in this figure 12, the contact surfaces of the segments according to the invention 16 are much smaller than the contact surfaces of the segments 12 according to the prior art. The surfaces of contact of the segments according to the invention will therefore be more rapidly eroded during friction with the faces of the cut material, thus ensuring a much transition faster. The two embodiments of protrusions of the above examples are not limiting of the invention. Other specific forms can be carried out without departing from the the invention.

    On peut cependant voir sur la figure 12 que les protubérances en forme de demi-disque 20 assurent une décroissance plus rapide de la surface de contact S. La forme particulière des protubérances 20 en forme de demi-disque présente l'avantage additionnel que la fabrication des poinçons nécessaires à leur confection est aisée. En effet, il suffit d'usiner, au moyen d'une fraise circulaire, un poinçon destiné à réaliser des paliers 11 parallèles à la face de coupe 4. Cet usinage circulaire est plus aisé que l'usinage d'un triangle. Les poinçons à paliers 11 parallèles sont également plus faciles à réaliser que des poinçons à palier 11 inclinés de l'art antérieur. Il est même possible de réutiliser des poinçons utilisés pour la confection de segments suivant l'art antérieur 8 à paliers 11 non inclinés. La forme de réalisation avec protubérances en forme de demi-disque 20 est donc particulièrement préférée.It can however be seen in Figure 12 that the protrusions in the form of a half-disc 20 provide faster decay of the contact surface S. La particular shape of the protrusions 20 in the form of a half-disc has the additional advantage that manufacturing punches necessary for their preparation is easy. In indeed, just machine, using a bur circular, a punch intended to make bearings 11 parallel to the cutting face 4. This circular machining is easier than machining a triangle. The punches to 11 parallel bearings are also easier to realize that level 11 inclined punches of art prior. It is even possible to reuse punches used for making segments according to art front 8 with bearings 11 not inclined. The form of realization with protrusions in the form of a half-disc 20 is therefore particularly preferred.

    Claims (10)

    Segment de coupe (16), pour scie (1) circulaire ou à lame d'armure, en substance en forme de parallélépipède rectangle, présentant une hauteur supérieure à 5 mm, et comportant plusieurs étages (17;18;19), la largeur du segment (16) décroissant par paliers (11) successifs de la face de coupe (4) du segment (16) à son pied (5),
    caractérisé en ce que le palier (11) entre un étage (17;18) et l'étage immédiatement inférieur ( 18;19), de largeur réduite, est un palier (11) parallèle à la face de coupe (4) du segment, prolongé par une ou plusieurs protubérances (20;21) d'une largeur égale à la largeur de l'étage supérieur (17;18), s'étendant sur une portion de la longueur et de la hauteur de l'étage inférieur (18;19).     Cutting segment (16), for circular or armor saw (1), essentially in the shape of a rectangular parallelepiped, having a height greater than 5 mm, and comprising several stages (17; 18; 19), the width the segment (16) descending in successive stages (11) from the cutting face (4) of the segment (16) to its foot (5),
    characterized in that the bearing (11) between a stage (17; 18) and the immediately lower stage (18; 19), of reduced width, is a bearing (11) parallel to the cutting face (4) of the segment, extended by a or several protrusions (20; 21) of a width equal to the width of the upper stage (17; 18), extending over a portion of the length and height of the lower stage (18; 19) .     Segment de coupe (16) suivant la revendication 1, caractérisé en ce que les protubérances (20;21) sont au nombre de deux par étage.Cutting segment (16) according to claim 1, characterized in that the protrusions (20; 21) are at the number of two per floor. Segment de coupe (16) suivant la revendication 1, caractérisé en ce que les protubérances (20;21) sont au nombre de une par étage.Cutting segment (16) according to claim 1, characterized in that the protrusions (20; 21) are at the number of one per floor. Segment de coupe (16) suivant l'une quelconque des revendications précédentes, caractérisé en ce que les protubérances (20) ont la forme d'un demi-disque.Cutting segment (16) according to any one of previous claims, characterized in that the protrusions (20) have the shape of a half-disc. Segment de coupe (16) suivant la revendication 4, caractérisé en ce que le diamètre du demi-disque des protubérances (20) est compris entre le huitième et le tiers de la longueur du segment (16).Cutting segment (16) according to claim 4, characterized in that the diameter of the half-disc of the protrusions (20) is between the eighth and the third of the length of the segment (16). Segment de coupe (16) suivant la revendication 4, caractérisé en ce que le diamètre du demi-disque des protubérances (20) est sensiblement égal au quart de la Cutting segment (16) according to claim 4, characterized in that the diameter of the half-disc of the protrusions (20) is substantially equal to a quarter of the Segment de coupe (16) suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que les protubérances (20) ont la forme d'un triangle.Cutting segment (16) according to any one of Claims 1 to 3, characterized in that the protrusions (20) have the shape of a triangle. Scie (1) circulaire sur laquelle sont montés des segments de coupe (16) suivant l'une quelconque des revendications 1 à 7.Circular saw (1) on which are mounted cutting segments (16) according to any one of claims 1 to 7. Scie (1) à lame d'armure sur laquelle sont montés des segments de coupe (16) suivant l'une quelconque des revendications 1 à 7.Armor saw (1) on which are mounted cutting segments (16) according to any one of claims 1 to 7. Procédé de réalisation de poinçons pour la fabrication de segments de coupe (16) suivant l'une quelconque des revendications 1 à 7, caractérisée en ce que les paliers (11) successifs sont obtenus par un premier usinage plan, et les protubérances circulaires sont obtenues au moyen d'un second usinage circulaire. Process for producing punches for the production of cutting segments (16) according to any one of Claims 1 to 7, characterized in that the successive bearings (11) are obtained by a first plane machining, and the circular protuberances are obtained by means of a second circular machining.
    EP19980870041 1998-02-27 1998-02-27 Cutting segment Expired - Lifetime EP0938958B1 (en)

    Priority Applications (3)

    Application Number Priority Date Filing Date Title
    PT98870041T PT938958E (en) 1998-02-27 1998-02-27 CUTTING TOOL SEGMENT
    DE1998607432 DE69807432T2 (en) 1998-02-27 1998-02-27 cutting segment
    EP19980870041 EP0938958B1 (en) 1998-02-27 1998-02-27 Cutting segment

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP19980870041 EP0938958B1 (en) 1998-02-27 1998-02-27 Cutting segment

    Publications (2)

    Publication Number Publication Date
    EP0938958A1 true EP0938958A1 (en) 1999-09-01
    EP0938958B1 EP0938958B1 (en) 2002-08-28

    Family

    ID=8237003

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19980870041 Expired - Lifetime EP0938958B1 (en) 1998-02-27 1998-02-27 Cutting segment

    Country Status (3)

    Country Link
    EP (1) EP0938958B1 (en)
    DE (1) DE69807432T2 (en)
    PT (1) PT938958E (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2094424A1 (en) * 2006-11-16 2009-09-02 Shinhan Diamond Ind. Co., Ltd. Diamond tool and method for manufacturing segment thereof

    Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3590535A (en) * 1969-04-24 1971-07-06 Federal Mogul Corp Diamond abrasive saw blade
    FR2399904A1 (en) * 1977-08-11 1979-03-09 Winter & Sohn Ernst Circular saw with spaced cutter elements - which have stepped profile with inwardly decreasing width
    US4787362A (en) * 1986-10-20 1988-11-29 Thermocarbon, Inc. Abrasive blade having a polycrystalline ceramic core
    JPH01171770A (en) * 1987-12-26 1989-07-06 Osaka Diamond Ind Co Ltd Saw blade
    JPH03208562A (en) * 1990-01-04 1991-09-11 Osaka Diamond Ind Co Ltd Super abrasive grain rotating blade

    Patent Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3590535A (en) * 1969-04-24 1971-07-06 Federal Mogul Corp Diamond abrasive saw blade
    FR2399904A1 (en) * 1977-08-11 1979-03-09 Winter & Sohn Ernst Circular saw with spaced cutter elements - which have stepped profile with inwardly decreasing width
    US4787362A (en) * 1986-10-20 1988-11-29 Thermocarbon, Inc. Abrasive blade having a polycrystalline ceramic core
    JPH01171770A (en) * 1987-12-26 1989-07-06 Osaka Diamond Ind Co Ltd Saw blade
    JPH03208562A (en) * 1990-01-04 1991-09-11 Osaka Diamond Ind Co Ltd Super abrasive grain rotating blade

    Non-Patent Citations (2)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 013, no. 446 (M - 877) 6 October 1989 (1989-10-06) *
    PATENT ABSTRACTS OF JAPAN vol. 015, no. 485 (M - 1188) 9 December 1991 (1991-12-09) *

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2094424A1 (en) * 2006-11-16 2009-09-02 Shinhan Diamond Ind. Co., Ltd. Diamond tool and method for manufacturing segment thereof
    EP2094424A4 (en) * 2006-11-16 2014-03-05 Shinhan Diamond Ind Co Ltd Diamond tool and method for manufacturing segment thereof

    Also Published As

    Publication number Publication date
    EP0938958B1 (en) 2002-08-28
    DE69807432T2 (en) 2003-05-15
    PT938958E (en) 2003-01-31
    DE69807432D1 (en) 2002-10-02

    Similar Documents

    Publication Publication Date Title
    EP1725363B1 (en) Method of producing a cutting blade
    EP0656239B1 (en) Process for machining workpieces of titanium or titanium alloy and spray clamp therefor
    FR2885310A1 (en) Manufacturing process for hollow turbine blade with recessed tip uses laminated plate brazed inside cast blade tip to form bathtub-shaped recess
    EP0938958B1 (en) Cutting segment
    EP3003619B1 (en) Rotary cutting tool with a cutting edge made of several materials
    EP0788859B1 (en) Wire sawing device
    FR2561149A1 (en) TUNGSTEN CARBIDE STRAWBERRY OR SIMILAR MATERIAL
    EP1858664B1 (en) Tool and machine for machining operations posing an inverse operation risk
    FR2483819A1 (en) Cutting tool for tubes and bars - is shaped as equilateral triangle with curved sides and rounded angles, tangential to bar
    FR2622820A1 (en) METHOD AND DEVICE FOR MANUFACTURING PELLETS HAVING AT LEAST ONE FLAT SURFACE
    EP1631163B1 (en) Method for setting a stone in a metal element
    FR3014002A1 (en) CORRELATION BLADE AND CORRESPONDING RODING TOOL, IN PARTICULAR FOR THE RODING OF WELDING ELECTRODE BITS
    FR2929153A1 (en) METHOD FOR MANUFACTURING A MONOBLOC AUBING DISK BY ABRASIVE WATER JET CUTTING
    FR2886194A1 (en) Circular saw blade for cutting wood, has teeth subdivided into identical sectors each having teeth with specific face angles, where each tooth has hook type sector breaking chips at level of back part and micro-teeth crushing chips
    FR3057188B1 (en) PROCESS FOR MACHINING A PIECE OF ELASTOMERIC MATERIAL BY TURNING
    FR2846897A1 (en) Grinding tool for grinding edge of electrode of welding, has cutting ridge extracting chipping during rotation of body, and dug out grooves in scrapper blade across ridge dividing chipping formation
    WO2000013867A1 (en) Sawing method for stone-cutting, diamond-bearing segment for cutting tool and cutting tool equipped with same
    FR2799145A3 (en) Circular saw blade e.g. for stone or concrete has peripheral segments with abrasive particles and gaps between
    EP0936014B1 (en) Schneidwerkzeug, insbesondere Bohrer,mit verbesserter Geometrie
    FR2549752A2 (en) ANNULAR CUTTING TOOL FOR DRILLING HOLES IN WORKPIECES
    BE1019132A3 (en) ROTARY TREPAN AND METHOD FOR MANUFACTURING THE SAME
    FR2921283A1 (en) Cutting blade for sawing .g. aluminum blocks in industrial application, has sawing and polishing teeth distributed along edge of body, and patches for forming respective stops tangent to plane parallel to running and penetrating directions
    FR2520272A1 (en) CEMENTITIOUS CARBIDE CUTTING TOOL AND METHOD FOR MANUFACTURING AND USING SUCH A TOOL
    EP0034977A1 (en) Industrial process for making jewellery, especially rings, rather of precious metal, provided with set stones, device for performing said process of obtaining jewellery
    FR2747950A1 (en) Drill for motor vehicle brake disc rotors

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): BE CH DE FI FR GB LI PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    17P Request for examination filed

    Effective date: 20000203

    AKX Designation fees paid

    Free format text: BE CH DE FI FR GB LI PT

    RBV Designated contracting states (corrected)

    Designated state(s): BE CH DE FI FR GB LI PT SE

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    17Q First examination report despatched

    Effective date: 20020328

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): BE CH DE FI FR GB LI PT SE

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REF Corresponds to:

    Ref document number: 69807432

    Country of ref document: DE

    Date of ref document: 20021002

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20021029

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: SC4A

    Free format text: AVAILABILITY OF NATIONAL TRANSLATION

    Effective date: 20021125

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20030530

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PUE

    Owner name: CARBODIAM S.A.

    Free format text: ROUSSEAU, LUC#16, RUE D'HEUVAL#1490 COURT ST. ETIENNE (BE) -TRANSFER TO- CARBODIAM S.A.#27, RUE GENERAL MELLIER#1495 TILLY (BE)

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: 732E

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: PC4A

    Free format text: CARBODIAM S.A. BE

    Effective date: 20040416

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: TP

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: CH

    Payment date: 20080313

    Year of fee payment: 11

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: SE

    Payment date: 20080219

    Year of fee payment: 11

    Ref country code: PT

    Payment date: 20080225

    Year of fee payment: 11

    Ref country code: GB

    Payment date: 20080215

    Year of fee payment: 11

    Ref country code: FI

    Payment date: 20080225

    Year of fee payment: 11

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PFA

    Owner name: CARBODIAM S.A.

    Free format text: CARBODIAM S.A.#27, RUE GENERAL MELLIER#1495 TILLY (BE) -TRANSFER TO- CARBODIAM S.A.#27, RUE GENERAL MELLIER#1495 TILLY (BE)

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20080229

    Year of fee payment: 11

    Ref country code: DE

    Payment date: 20080311

    Year of fee payment: 11

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: BE

    Payment date: 20080225

    Year of fee payment: 11

    BERE Be: lapsed

    Owner name: S.A. *CARBODIAM

    Effective date: 20090228

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: MM4A

    Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

    Effective date: 20090827

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    EUG Se: european patent has lapsed
    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20090227

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090827

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090228

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090227

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090228

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20091030

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090901

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090228

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090227

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090302

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090228