EP0133124A1 - 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

Info

Publication number
EP0133124A1
EP0133124A1 EP84401549A EP84401549A EP0133124A1 EP 0133124 A1 EP0133124 A1 EP 0133124A1 EP 84401549 A EP84401549 A EP 84401549A EP 84401549 A EP84401549 A EP 84401549A EP 0133124 A1 EP0133124 A1 EP 0133124A1
Authority
EP
European Patent Office
Prior art keywords
elements
diamond
cutting
circular
pellets
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
EP84401549A
Other languages
German (de)
French (fr)
Other versions
EP0133124B1 (en
Inventor
Michel Durand
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
Publication of EP0133124A1 publication Critical patent/EP0133124A1/en
Application granted granted Critical
Publication of EP0133124B1 publication Critical patent/EP0133124B1/en
Expired 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 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 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, which prevents any deformation on attack and therefore on the cutting surfaces of the pellets.

Landscapes

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

Abstract

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 concentration than that of the other elements, and the central element (5), further having a larger width than the external elements (3, 7).

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 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.To overcome this drawback, it has been proposed, in particular, conical-shaped pellets, pellets of width decreasing by steps and sandwich pellets with elements of different concentrations, two external parts with high diamond concentration and an internal part with low concentration.

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 l'invention qui 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 légèrement saillie et provoque alors un mince rainurage juste dans le plan médian du disque de coupe.However, these known pastilles did not give the expected results and the research carried out led to the production of a diamond pastille according to the invention which is remarkable in that it consists of a sandwich pellet 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, moreover, a greater width than the elements external. After a few cuts, the intermediate and external elements wear more than the central element, the latter protrudes slightly 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.

A titre nullement limitatif, 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.In no way limiting, there is shown in the single figure of the accompanying drawing 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 block to be sawn, the saw therefore exerts a grooving effect in the median plane of the sheet 1, which prevents any deformation on attack and therefore on the cutting surfaces of the pellets.

Claims (2)

1. Pastilles diamantées pour scie circulaire, en particulier pour la taille de pierres naturelles destinées à être soldées à la périphérie d'un disque de coupe circulaire et constituées par un mélange de diamant et de liant, en principe sous forme de poudre métallique, caractérisées par le fait qu'elles sont des pastilles sandwich subdivisées en cinq éléments accolés, de concentrations en diamant différentes, les deux éléments intermédiaires (4, 6) compris entre l'élément central (5) et les éléments externes (3, 7) ayant une concentration plus faible que celle des autres éléments, et l'élément central (5) ayant, en outre, une plus grande largeur que les éléments externes.1. Diamond pellets for circular saw, in particular for cutting natural stones intended to be cut at the periphery of a circular cutting disc and constituted by a mixture of diamond and binder, in principle in the form of metal powder, characterized by the fact that they are sandwich pellets subdivided into five joined elements, of different diamond concentrations, the two intermediate elements (4, 6) lying between the central element (5) and the external elements (3, 7) having a lower concentration than that of the other elements, and the central element (5) having, in addition, a greater width than the external elements. 2. Scie circulaire, caractérisée par le fait qu'elle est constituée par un disque de coupe circulaire muni à sa périphérie des pastilles diamantées selon la revendication 1, montées de façon que les plans de ses éléments soient parallèles audit disque de coupe.2. Circular saw, characterized in that it is constituted by a circular cutting disc provided at its periphery with diamond pellets according to claim 1, mounted so that the planes of its elements are parallel to said cutting disc.
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 true EP0133124A1 (en) 1985-02-13
EP0133124B1 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

Country Status (3)

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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214795A1 (en) * 1985-08-22 1987-03-18 De Beers Industrial Diamond Division (Proprietary) Limited Tool Component
EP0249209A2 (en) * 1986-06-10 1987-12-16 Nissan Motor Co., Ltd. Actively controlled automotive suspension system with improved damping characteristics
WO2000013867A1 (en) * 1998-09-07 2000-03-16 Diamant Boart S.A. Sawing method for stone-cutting, diamond-bearing segment for cutting tool and cutting tool equipped with same
WO2000036264A1 (en) * 1998-12-15 2000-06-22 De Beers Industrial Diamond Division (Proprietary) Limited Tool component
WO2003059562A1 (en) * 2002-01-16 2003-07-24 Tyrolit Schleifmittelwerke Swarovski Kg Band saw
ES2267398A1 (en) * 2005-08-04 2007-03-01 Electrolux Construction Diamond segment for cutting tools e.g. cutting disks for cutting stony materials has prismatic configuration having surfaces each with cross-sectional channel that runs between bases of segment
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
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)
CN117140745A (en) * 2023-10-30 2023-12-01 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (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
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

Patent Citations (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
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

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214795A1 (en) * 1985-08-22 1987-03-18 De Beers Industrial Diamond Division (Proprietary) Limited Tool Component
EP0249209A2 (en) * 1986-06-10 1987-12-16 Nissan Motor Co., Ltd. Actively controlled automotive suspension system with improved damping characteristics
EP0249209A3 (en) * 1986-06-10 1988-08-10 Nissan Motor Co., Ltd. Actively controlled automotive suspension system with improved damping characteristics
WO2000013867A1 (en) * 1998-09-07 2000-03-16 Diamant Boart S.A. Sawing method for stone-cutting, diamond-bearing segment for cutting tool and cutting tool equipped with same
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
WO2000036264A1 (en) * 1998-12-15 2000-06-22 De Beers Industrial Diamond Division (Proprietary) Limited Tool component
WO2003059562A1 (en) * 2002-01-16 2003-07-24 Tyrolit Schleifmittelwerke Swarovski Kg Band saw
EP1332822A1 (en) * 2002-01-16 2003-08-06 Tyrolit Schleifmittelwerke Swarovski KG Bandsaw
CN100368131C (en) * 2002-01-16 2008-02-13 蒂罗利特磨料机械斯沃罗夫斯基两合公司 Band saw
KR100941826B1 (en) * 2002-01-16 2010-02-11 티로리트 슈라이프미텔베르케 스바로프스키 콤만디트게젤샤프트 A band saw and a process for producing abrasive segments for a band saw
ES2267398A1 (en) * 2005-08-04 2007-03-01 Electrolux Construction Diamond segment for cutting tools e.g. cutting disks for cutting stony materials has prismatic configuration having surfaces each with cross-sectional channel that runs between bases of segment
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
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)
CN117140745A (en) * 2023-10-30 2023-12-01 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
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

Also Published As

Publication number Publication date
EP0133124B1 (en) 1987-03-04
DE3462454D1 (en) 1987-04-09
FR2549769B1 (en) 1987-08-07
FR2549769A1 (en) 1985-02-01

Similar Documents

Publication Publication Date Title
EP0133124B1 (en) Diamond cutting segments for circular saws, in particular for cutting natural stone, and circular saw provided with such cutting segments
FR2519569A1 (en) METAL SAW BLADE HAVING IMPROVED TOOTH TO INCREASE CUTTING SPEED AND SERVICE LIFE AND REDUCE NOISE
FR2502524A1 (en) BREAKING TOOL WITH REPORTED PELLETS
FR2688163A1 (en) MAINTAINING DEVICE FOR THE BLADES OF A SAW TRAIN AND SAW TRAIN USING SUCH A DEVICE.
FR2504842A1 (en) SAW AND METHOD OF MANUFACTURING THE SAME
FR2462958A1 (en) Cutting tool with chip divider groove - has groove bottom curving between front and clearance faces
CH624873A5 (en)
EP0090773B1 (en) Saw chain cutter link
BE1016679A5 (en) Bead for wire saw, includes at least one groove formed at peripheral surface of shank main body and filled with metallic-bond material to form metallic-bond material layer
US10751817B1 (en) Sawblade grinding methods, sawblade grinding preparation methods and sawblades
FR2471845A1 (en) DIPOSITIVE INTENDED TO GIVE A TENDENT SHAPE TO THE GUIDE FACES OF THE KNIFE HOLDERS OF A WOOD FRAGMENT MACHINE
FR2550050A1 (en) Toothed cutting wheel for mower or tree-dozer
EP3452874A1 (en) Timepiece hairspring
EP0370843B1 (en) Polishing plate
FR2777823A1 (en) CUTTING ASSEMBLY OF A MOTORIZED CHAIN SAW
FR2495535A1 (en) IMPROVED DEVICE FOR CUTTING STONE MATERIALS
FR2469250A1 (en) Tapered cruciform bit for screw-driver - has identical tapered wings at ninety degree intervals and is in one pressed piece
WO2000013867A1 (en) Sawing method for stone-cutting, diamond-bearing segment for cutting tool and cutting tool equipped with same
BE1008044A5 (en) Segment diamond cutting concretion.
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
BE567449A (en)
CA1242373A (en) Radial saw with toothed peripheral hoop
FR2570317A1 (en) Circular blade with toothing of the "gouging" type
BE470003A (en)
EP1596260A1 (en) Production method for a toothed wheel

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

Designated state(s): BE DE GB IT NL SE

17P Request for examination filed

Effective date: 19850805

17Q First examination report despatched

Effective date: 19860514

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT NL SE

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

Ref country code: SE

Effective date: 19870304

Ref country code: NL

Effective date: 19870304

REF Corresponds to:

Ref document number: 3462454

Country of ref document: DE

Date of ref document: 19870409

ITF It: translation for a ep patent filed

Owner name: CALVANI SALVI E VERONELLI S.R.L.

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890731

Year of fee payment: 6

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

Ref country code: BE

Payment date: 19890809

Year of fee payment: 6

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

Ref country code: DE

Payment date: 19890825

Year of fee payment: 6

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

Ref country code: GB

Effective date: 19900723

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

Ref country code: BE

Effective date: 19900731

BERE Be: lapsed

Owner name: DURAND MICHEL

Effective date: 19900731

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910403