EP0133124B1 - Diamond cutting segments for circular saws, in particular for cutting natural stone, and circular saw provided with such cutting segments - Google Patents

Diamond cutting segments for circular saws, in particular for cutting natural stone, and circular saw provided with such cutting segments Download PDF

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Publication number
EP0133124B1
EP0133124B1 EP19840401549 EP84401549A EP0133124B1 EP 0133124 B1 EP0133124 B1 EP 0133124B1 EP 19840401549 EP19840401549 EP 19840401549 EP 84401549 A EP84401549 A EP 84401549A EP 0133124 B1 EP0133124 B1 EP 0133124B1
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EP
European Patent Office
Prior art keywords
cutting
diamond
elements
circular
cutting segments
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19840401549
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German (de)
French (fr)
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EP0133124A1 (en
Inventor
Michel Durand
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades

Definitions

  • the present invention relates to diamond pellets with which circular saws intended, in particular, for cutting granite.
  • pellets are made up of a mixture of diamond and binder, in principle in the form of a metallic powder, such as cobalt. They are obtained by compacting and sintering at high temperature and are welded to the periphery of circular discs, or sheets, of large diameter and small thickness.
  • pellets made of a single element in a mixture of given diamond concentration rapidly deformed and their cutting surface was rounded, causing deviations of the cutting disc and non-planar cutting surfaces.
  • the tablet according to the invention is remarkable in that it consists of a sandwich tablet of five elements of different diamond concentrations, the central element and the two external elements being at high concentration and the two intermediate elements at lower concentration , the central element having, in addition, a greater width than the external elements. After a few cuts, the intermediate and external elements wear more than the central element, the latter protrudes regularly and then causes a slight grooving just in the median plane of the cutting disc.
  • the pellets - according to the invention avoid any deformation at the time of the attack and consequently any deformation of their surfaces.
  • the cut is then of excellent quality, that is to say of perfect flatness, the pellets wear regularly and the sheet or disc, cutting sees its longevity significantly increased.
  • the circular saw is constituted by a disc, or sheet metal, 1 with a thickness of 9 mm and for a diameter of 2.5 meters, at the periphery of which are welded diamond pellets 2 of 15 mm. height, 35 mm in length and 12 mm in width.
  • These pastilles 2 of shape which widens slightly towards their free face consist of five parallel elements 3, 4, 5, 6 and 7 of different widths, obtained by mixing a binder, such as cobalt, with diamond powder or granule.
  • the diamond concentration of the intermediate elements 4 and 6 is lower than that of the middle elements 5 and external elements 3 and 7.
  • the width of the central element 5 is substantially double that of the external elements 3, and 7.
  • the saw therefore exerts a grooving effect in the median plane of the sheet 1, this. which prevents any deformation on attack and therefore on the cutting surfaces of the pellets.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

La présente invention concerne les pastilles diamantées dont sont munies les scies circulaires destinées, en particulier, à la taille du granit.The present invention relates to diamond pellets with which circular saws intended, in particular, for cutting granite.

Ces pastilles sont constituées par un mélange de diamant et de liant, en principe sous forme de poudre métallique, telle que le cobalt. Elles sont obtenues par compactage et frittage à haute température et sont soudées à la périphérie de disques, ou tôles, circulaires de grand diamètre et de faible épaisseur.These pellets are made up of a mixture of diamond and binder, in principle in the form of a metallic powder, such as cobalt. They are obtained by compacting and sintering at high temperature and are welded to the periphery of circular discs, or sheets, of large diameter and small thickness.

On a toujours cherché à obtenir des surfaces de coupe les plus planes possible avec des tôles de faible épaisseur.We have always sought to obtain the most plane cutting surfaces possible with thin sheets.

Les pastilles faites d'un seul élément en mélange de concentration donnée en diamant se déformaient rapidement et leur surface de coupe s'arrondissait, entraînant des déviations du disque de coupe et des surfaces de coupe non planes.The pellets made of a single element in a mixture of given diamond concentration rapidly deformed and their cutting surface was rounded, causing deviations of the cutting disc and non-planar cutting surfaces.

Pour remédier à cet inconvénient, on a proposé, notamment, des pastilles de forme conique, des pastilles à largeur diminuant par gradins (FR-A-2 399 904) et des pastilles en sandwich à éléments de différentes concentrations, deux parties extérieures à haute concentration en diamant et une partie interne à faible concentration (DE-A-2318378).To overcome this drawback, it has been proposed, in particular, conical shaped pellets, pastilles of width narrowing in steps (FR-A-2 399 904) and sandwich pellets with elements of different concentrations, two outer parts with high diamond concentration and an internal part with low concentration (DE-A-2318378).

Mais ces pastilles connues n'ont pas donné les résultats escomptés et les recherches poursuivies ont conduit à la réalisation d'une pastille diamantée selon la revendication 1. De telles pastilles sont montées sur un disque circulaire pour réaliser une scie selon la revendication 2. La pastille selon l'invention est remarquable en ce qu'elle est constituée d'une pastille sandwich de cinq éléments de concentrations en diamant différentes, l'élément central et les deux éléments externes étant à concentration élevée et les deux éléments intermédiaires à concentration plus faible, l'élément central ayant, en outre, une plus grande largeur que les éléments externes. Au bout de quelques coupes, les éléments intermédiaires et externes s'usant plus que l'élément central, celui-ci fait régulièrement saillie et provoque alors un mince rainurage juste dans le plan médian du disque de coupe.However, these known pads did not give the expected results and the research carried out led to the production of a diamond pad according to claim 1. Such pads are mounted on a circular disc to produce a saw according to claim 2. The tablet according to the invention is remarkable in that it consists of a sandwich tablet of five elements of different diamond concentrations, the central element and the two external elements being at high concentration and the two intermediate elements at lower concentration , the central element having, in addition, a greater width than the external elements. After a few cuts, the intermediate and external elements wear more than the central element, the latter protrudes regularly and then causes a slight grooving just in the median plane of the cutting disc.

Les pastilles -selon l'invention évitent toute déformation au moment de l'attaque et par suite toutes déformations de leurs surfaces. La coupe est alors d'excellente qualité, c'est-à-dire de parfaite planéité, les pastilles s'usent régulièrement et la tôle ou disque, de coupe voit sa longévité notablement augmentée.The pellets - according to the invention avoid any deformation at the time of the attack and consequently any deformation of their surfaces. The cut is then of excellent quality, that is to say of perfect flatness, the pellets wear regularly and the sheet or disc, cutting sees its longevity significantly increased.

On a représenté à la figure unique du dessin annexé une vue partielle en coupe radiale d'une scie à pastilles selon l'invention. Dans l'exemple représenté, la scie circulaire est constituée par un disque, ou tôle, 1 d'une épaisseur de 9 mm et pour un diamètre de 2,5 mètres, à la périphérie duquel sont soudées des pastilles diamantées 2 de 15 mm de hauteur, 35 mm de longueur et 12 mm de largeur. Ces pastilles 2 de forme allant en s'évasant légèrement vers leur face libre sont constituées de cinq éléments parallèles 3, 4, 5, 6 et 7 de largeurs différentes, obtenus par mélange d'un liant, tel que le cobalt, avec de la poudre ou granulé de diamant. La concentration en diamant des éléments intermédiaires 4 et 6 est plus faible que celle des éléments médian 5 et externes 3 et 7. La largeur de l'élément central 5 est sensiblement le double de celle des éléments externes 3, et 7.The single figure of the accompanying drawing shows a partial view in radial section of a pellet saw according to the invention. In the example shown, the circular saw is constituted by a disc, or sheet metal, 1 with a thickness of 9 mm and for a diameter of 2.5 meters, at the periphery of which are welded diamond pellets 2 of 15 mm. height, 35 mm in length and 12 mm in width. These pastilles 2 of shape which widens slightly towards their free face consist of five parallel elements 3, 4, 5, 6 and 7 of different widths, obtained by mixing a binder, such as cobalt, with diamond powder or granule. The diamond concentration of the intermediate elements 4 and 6 is lower than that of the middle elements 5 and external elements 3 and 7. The width of the central element 5 is substantially double that of the external elements 3, and 7.

Il est clair qu'après quelques coupes, l'usure des éléments 3, 4 et 6, 7 plus rapide que celle de l'élément médian 5, provoque l'apparition d'une partie saillante constituée par l'extrémité devenue libre de cet élément 5.It is clear that after a few cuts, the wear of the elements 3, 4 and 6, 7 faster than that of the middle element 5, causes the appearance of a projecting part formed by the free end of this item 5.

Lors des coupes suivantes dans le bloc à scier, la scie exerce donc un effet de rainurage dans le plan médian de la tôle 1, ce. qui évite toute déformation à l'attaque et donc sur les surfaces de taille des pastilles.During subsequent cuts in the saw block, the saw therefore exerts a grooving effect in the median plane of the sheet 1, this. which prevents any deformation on attack and therefore on the cutting surfaces of the pellets.

Claims (2)

1. Diamond inserts for a circular saw, particularly for cutting natural stones, intended to be welded to the periphery of a circular cutting disk and formed by a mixture of diamond and a binder, principally in the form of a metal powder, the insert being subdivided into several elements sandwiched together having different diamond concentrations, characterized by the fact that the insert is subdivided into five elements, the two intermediate elements (4, 6) between the central element (5) and the external elements (3, 7) having a lower coneentration than that of the other elements, and the central element (5), further having a larger width than the external elements (3, 7).
2. A circular saw formed by a circular cutting disk having at its periphery diamond inserts as claimed in claim 1, characterized by the fact that the inserts are mounted so that the planes of the five elements are parallel to said cutting disks.
EP19840401549 1983-07-26 1984-07-23 Diamond cutting segments for circular saws, in particular for cutting natural stone, and circular saw provided with such cutting segments Expired EP0133124B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8312342A FR2549769B1 (en) 1983-07-26 1983-07-26 DIAMOND PADS FOR A CIRCULAR SAW, PARTICULARLY FOR THE SIZING OF NATURAL STONES, AND A CIRCULAR SAW PROVIDED WITH SUCH PELLETS
FR8312342 1983-07-26

Publications (2)

Publication Number Publication Date
EP0133124A1 EP0133124A1 (en) 1985-02-13
EP0133124B1 true EP0133124B1 (en) 1987-03-04

Family

ID=9291124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840401549 Expired EP0133124B1 (en) 1983-07-26 1984-07-23 Diamond cutting segments for circular saws, in particular for cutting natural stone, and circular saw provided with such cutting segments

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EP (1) EP0133124B1 (en)
DE (1) DE3462454D1 (en)
FR (1) FR2549769B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU577958B2 (en) * 1985-08-22 1988-10-06 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive compact
JPH0696363B2 (en) * 1986-06-10 1994-11-30 日産自動車株式会社 Active suspension
EP0988950A1 (en) * 1998-09-07 2000-03-29 DIAMANT BOART Société Anonyme Method of sawing stone, diamond cutting segment and saw blade equipped with such segment
GB9827600D0 (en) * 1998-12-15 1999-02-10 De Beers Ind Diamond Abrasive product
PT1332822E (en) * 2002-01-16 2007-11-16 Swarovski Tyrolit Schleif Bandsaw
ES2267398B1 (en) * 2005-08-04 2008-03-01 Electrolux Construction DIAMONDED SEGMENT FOR CUTTING TOOLS OF PETREOS MATERIALS.
CN102267190A (en) * 2011-07-12 2011-12-07 山东日能超硬材料有限公司 Segmented compound super-hard cutter bit and manufacturing method thereof
CN105666706A (en) * 2016-02-01 2016-06-15 广州普泰克金刚石工具有限公司 Tool bit of slasher saw with saw blade for aslant cutting granite and quartzite and formula thereof
ES2762970A1 (en) * 2018-11-26 2020-05-26 Solga Diamant S L Segmented cutting disc, for racing on the floor or on the wall. (Machine-translation by Google Translate, not legally binding)
CN117140745B (en) * 2023-10-30 2023-12-29 泉州众志新材料科技有限公司 Gang saw cutter head capable of reducing VOC concentration and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE669364C (en) * 1936-12-09 1938-12-23 Gustav Thome Stone saw
FR1208263A (en) * 1957-06-04 1960-02-23 Bisterfeld & Stolting Grinding wheel working from the face
DE2318378A1 (en) * 1973-04-12 1974-09-19 Bronat Kg Georg DIAMOND CIRCULAR SAW BLADE FOR CUTTING ROCK
DE7724960U1 (en) * 1977-08-11 1977-11-24 Ernst Winter & Sohn (Gmbh & Co), 2000 Hamburg circular saw

Also Published As

Publication number Publication date
DE3462454D1 (en) 1987-04-09
FR2549769B1 (en) 1987-08-07
EP0133124A1 (en) 1985-02-13
FR2549769A1 (en) 1985-02-01

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