EP1155796A1 - Outil à couper de la pierre - Google Patents

Outil à couper de la pierre Download PDF

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Publication number
EP1155796A1
EP1155796A1 EP01111323A EP01111323A EP1155796A1 EP 1155796 A1 EP1155796 A1 EP 1155796A1 EP 01111323 A EP01111323 A EP 01111323A EP 01111323 A EP01111323 A EP 01111323A EP 1155796 A1 EP1155796 A1 EP 1155796A1
Authority
EP
European Patent Office
Prior art keywords
tool according
chain
elements
cutting
rigid elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01111323A
Other languages
German (de)
English (en)
Inventor
Riccardo Belotti
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
Priority claimed from IT2000MI001103A external-priority patent/IT1317643B1/it
Priority claimed from IT2000CO000020A external-priority patent/ITCO20000020A1/it
Application filed by Individual filed Critical Individual
Publication of EP1155796A1 publication Critical patent/EP1155796A1/fr
Withdrawn legal-status Critical Current

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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
    • B28D1/124—Saw chains; rod-like saw blades; saw cables

Definitions

  • the present invention refers to a tool for cutting stone and in particular for cutting large blocks of hard stone such as marble, granite and the like.
  • a method of sawing by means of a steel blade is used. During sawing the blade is integrated with steel grit, which is topped up according to the consumption or the loss encountered. This method is conditioned both by the length of the steel blade and by the high cost of the steel grit consumed.
  • rotary disc saws are used for cutting of small blocks of stone.
  • the disc is made of steel with a cutting edge set with sectors of synthetic diamond, which give such a tool a great hardness, thus obtaining less wear and greater cutting efficiency.
  • discs with a diameter greater than two metres cannot be made; hence diamond discs are suitable only for small blocks of stone.
  • Chain cutters which have a blade supporting a chain provided with cutting elements.
  • Chain cutters are based on technologies tried and tested in other sectors and particularly in deforestation.
  • This cutting method has the advantages of an improbable breakage of the chain and a good cutting precision.
  • it has limitations in the length of the chain-bearing blade which does not exceed four metres and the width of the cut, which is of the order of 40 mm. These limitations are due to the particular structure of the chain which must be adapted to the blade.
  • the diamond wire comprises a steel rope whereon synthetic diamonds spaced at regular intervals are fixed.
  • the synthetic diamonds are shaped like a substantially cylindrical bead with an axial hole wherein the steel wire is inserted.
  • the diamond wire can be used for cutting stones of any size and is also used for quarrying blocks of stone.
  • the diamond wire also has various drawbacks.
  • the diamond wire is normally used in a closed loop configuration.
  • the join of the two ends of the loop which takes place by means of special joints, is particularly rigid and therefore is subjected to greater stress during cutting and is more liable to break.
  • the metal wire if it breaks, can no longer be repaired and must be replaced.
  • An object of the invention is to eliminate said drawbacks by providing a stone-cutting tool that is extremely efficient and at the same time ensures a long life and high reliability.
  • Another object of the present invention is to provide an extremely versatile tool, suitable for cutting large and small blocks of stone.
  • Another object of the present invention is to provide a tool consisting of a plurality of elements that can be replaced individually in the case of wear.
  • Another object of the present invention is to provide such a tool that is suitable for quarrying blocks of stone.
  • Another object of the present invention is to provide such a diamond chain tool that is able to operate in the absence of a supporting blade.
  • Another object of the present invention is to provide such a tool that allows a cut with an extremely small thickness.
  • Another object of the present invention is to provide a tool for stone cutting that is economical, simple to make and simple to use.
  • the stone cutting tool according to the invention provides a plurality of elements, consisting of rigid bodies, linked to one another so as to form a chain.
  • Said elements or links of the chain can be made of any rigid material, preferably steel, and can take the form of rings, plates, tie-rods, hooks and the like.
  • a cutting element comprising synthetic diamond in the most suitable shape is fixed on all the elements of the chain or on some of them.
  • the cutting element can be in the form of a cylindrical bead with an axial hole for application to the element of the chain.
  • the cutting element can advantageously be in the form of a parallelepiped sector, which offers a smaller cutting surface than the bead and consequently better use. Moreover, said cutting element can be substantially U-shaped in cross section, for better anchoring to the chain element.
  • the chain element is preferably trapezoidal in shape.
  • the trapezoidal configuration of the chain element allows freedom of rotation of the chain and allows the diamond cutting element to be applied either on the smaller side or on the greater side of the chain element, according to technical operating requirements.
  • the structure of the chain elements allows the formation of a steel chain that offers a greater total strength and strength per surface unit than a steel cable/rope bearing a diamond bead with the same abrasive surface.
  • This allows the diamond chain according to the invention to be used with the same modalities as the diamond wire, therefore the diamond chain according to the invention can operate without the support of the chain-carrying blade used at present in tools of the prior art.
  • the stone cutting tool according to the invention has various advantages with respect to diamond wires, rotating diamond discs and other tools of the prior art.
  • the tool according to the invention through simple addition or removal of the chain elements, can give rise to a chain of variable length which, according to requirements, can be employed for cutting of large or small blocks and for quarrying of stone.
  • the elements of the diamond chain according to the invention are all the same and perfectly interchangeable and replaceable. Thus if an element is damaged it can be replaced with a new element without the need to replace the entire chain.
  • the tool according to the invention can, moreover, be used in a closed loop configuration, without creating breaks in continuity between its elements which could cause unevenness of stress and thus a weakening of the structure.
  • Figure 1 shows a portion of chain comprising four chain elements 1 linked to each other by means of pins 20, in which the end chain elements 1 are shown broken off.
  • a single element of chain comprises a body 2 in the form of a substantially trapezoidal plate.
  • the body 2 can be made of any material that has a high strength, such as a metal, for example, and preferably steel.
  • the smaller base of the body 2 is coupled to a cutting element 3 comprising synthetic diamond.
  • the cutting element 3 is obtained by sintering of fixative material and synthetic diamond powder, in suitable percentages to ensure a hardness of the cutting element 3 adequate to the cutting of stone.
  • the cutting element 3 can have a cylindrical shape (bead) or a parallelepiped shape (sector). In the present embodiment, as better shown in Figure 3, the cutting element 3 has a sector shape, with a U-shaped or simply parallelepiped-shaped cross section.
  • the coupling method of the cutting element 3 to the metal body 2 is not described in detail since it is well known to the art, in particular to the art of producing diamond discs for stone cutting.
  • the cutting element 3 has been shown coupled to the smaller base of the body 2 of the chain element 1, however, according to the use of the tool, the cutting element 3 can also be coupled to the greater base of the body 2 of the chain element 1.
  • the body 2 has two side parts 4 and 5 and a central part 6.
  • the side parts 4 and 5 have respective substantially arched side profiles 4' and 5'.
  • the right side part 4 has a substantially smaller thickness than the central part 2.
  • a through hole 7 with an axis substantially at right angles to the surface of the side part 4 is formed in the upper part of the side part 4.
  • the through hole 7 has such a diameter as to accommodate one of the linking pins 20.
  • the side part 5 has the same thickness as the central part 6 and has a slot 8 disposed on a vertical plane so as to divide the side part 5 into two plates 9, 9' parallel to each other.
  • the slot 8 has a thickness equal to or slightly greater than the thickness of the side part 4. In this manner the side part 4 of a chain element 6 can be inserted into the slot 8 of another adjacent chain element.
  • Two through holes 10, 10' disposed coaxially are formed in the two plates 9, 9'of the side part 5.
  • the hole 7 of the side part 5 is disposed coaxially with the holes 10 and 10' of the plates 9, 9' of the side part 5.
  • a pin 20 which engages the three holes 10, 7 and 10'. In this manner the two chain elements 1 are linked to each other and can rotate around the pin 20.
  • the particular arched configuration of the side profiles 4', 5' gives to the two linked chain elements 1 a rotational freedom of an angle of about 90°.
  • the diamond chain according to the invention can be used in a closed loop configuration.
  • a driving machine similar to that used for diamond wires of the prior art can give the diamond chain according to the invention a rotatory or reciprocating movement to allow cutting of the stone through abrasion.
  • Figure 4 illustrates a second embodiment of a portion of chain according to the invention in which like or corresponding elements are designated by the same reference numerals as in the first embodiment and are not described.
  • Figure 5 shows a chain element of the portion of chain of figure 4, designated with reference numeral 100.
  • the body 2 of the chain element 100 instead of having a trapezoidal plate configuration has a rectangular plate configuration.
  • the side parts 104 and 105 have at their ends substantially circular side profiles 104', 105', shaped like a semi-circumference.
  • the transverse holes 7 and 10 for receiving the linking pins 20 are disposed substantially in the centre of the radius of curvature of the respective circular profiles 104' and 105'.
  • the particular semicircular configuration of the side profiles 104', 105' gives the two linked chain elements 100 a freedom of rotation with an angle of about 180°.
  • chain elements with a trapezoidal and rectangular configuration have been shown.
  • the chain elements can have different configurations.
  • chain elements in the form of rings, tie-rods and hooks can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP01111323A 2000-05-18 2001-05-09 Outil à couper de la pierre Withdrawn EP1155796A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMI001103 2000-05-18
IT2000MI001103A IT1317643B1 (it) 2000-05-18 2000-05-18 Utensile per il taglio della pietra
ITCO000020 2000-07-31
IT2000CO000020A ITCO20000020A1 (it) 2000-07-31 2000-07-31 Utensile per il taglio della pietra

Publications (1)

Publication Number Publication Date
EP1155796A1 true EP1155796A1 (fr) 2001-11-21

Family

ID=26332706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01111323A Withdrawn EP1155796A1 (fr) 2000-05-18 2001-05-09 Outil à couper de la pierre

Country Status (1)

Country Link
EP (1) EP1155796A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041263A1 (fr) * 2006-10-05 2008-04-10 Fantini Sud S.P.A. Chaîne pour machine à scier des pierres ornementales, ne comportant pas de broches de verrouillage pour l'axe de pivotement
ITGE20080077A1 (it) * 2008-09-17 2010-03-18 Mec Garrone S A S D I Marco Garron Off Catena di taglio per macchine segatrici per l'estrazione in cava di ardesie, marmi, graniti e minerali litoidi in genere.
FR2961572A1 (fr) * 2010-06-22 2011-12-23 Sebastien Guerif Maillon exterieur presentant des tourillons a pivotement libre et chaine dotee de tels maillons.
EP3150882A1 (fr) 2015-09-30 2017-04-05 Guerif, Sébastien Élément modulaire de chaîne présentant des tourillons à pivotement libre et couples de frottement équilibrés, et chaînes dotées de tels éléments

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362979A (en) * 1944-01-08 1944-11-21 Contour Saws Abrasive band
US2869534A (en) * 1956-09-11 1959-01-20 Stihl Andreas Grinding chain tool
EP0028418A1 (fr) * 1979-11-05 1981-05-13 ETABLISSEMENTS FERNAND PERRIER & CIE Société anonyme dite Procédé et dispositif pour le sciage de pierres et marbres
US4619172A (en) * 1985-07-05 1986-10-28 Rafael Perez Cutting saw for grinding solid materials
US4981129A (en) * 1986-09-02 1991-01-01 Oesterman Bror E Chain saw
EP0453322A1 (fr) * 1990-04-23 1991-10-23 Blount, Inc. Chaîne de sciage pour du matériau granulé
US5184598A (en) * 1991-07-15 1993-02-09 Blount, Inc. Saw chain for aggregate materials
IT1241916B (it) * 1990-12-19 1994-02-01 Ditel Centro Ligure Per La Dif Catena di taglio per macchine segatrici, per l'estrazione in cava di ardesie, marmi, graniti e minerali litoidi in genere

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362979A (en) * 1944-01-08 1944-11-21 Contour Saws Abrasive band
US2869534A (en) * 1956-09-11 1959-01-20 Stihl Andreas Grinding chain tool
EP0028418A1 (fr) * 1979-11-05 1981-05-13 ETABLISSEMENTS FERNAND PERRIER & CIE Société anonyme dite Procédé et dispositif pour le sciage de pierres et marbres
US4619172A (en) * 1985-07-05 1986-10-28 Rafael Perez Cutting saw for grinding solid materials
US4981129A (en) * 1986-09-02 1991-01-01 Oesterman Bror E Chain saw
EP0453322A1 (fr) * 1990-04-23 1991-10-23 Blount, Inc. Chaîne de sciage pour du matériau granulé
IT1241916B (it) * 1990-12-19 1994-02-01 Ditel Centro Ligure Per La Dif Catena di taglio per macchine segatrici, per l'estrazione in cava di ardesie, marmi, graniti e minerali litoidi in genere
US5184598A (en) * 1991-07-15 1993-02-09 Blount, Inc. Saw chain for aggregate materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041263A1 (fr) * 2006-10-05 2008-04-10 Fantini Sud S.P.A. Chaîne pour machine à scier des pierres ornementales, ne comportant pas de broches de verrouillage pour l'axe de pivotement
ITGE20080077A1 (it) * 2008-09-17 2010-03-18 Mec Garrone S A S D I Marco Garron Off Catena di taglio per macchine segatrici per l'estrazione in cava di ardesie, marmi, graniti e minerali litoidi in genere.
FR2961572A1 (fr) * 2010-06-22 2011-12-23 Sebastien Guerif Maillon exterieur presentant des tourillons a pivotement libre et chaine dotee de tels maillons.
WO2011161367A1 (fr) 2010-06-22 2011-12-29 Guerif Sebastien Chaine modulaire
EP3150882A1 (fr) 2015-09-30 2017-04-05 Guerif, Sébastien Élément modulaire de chaîne présentant des tourillons à pivotement libre et couples de frottement équilibrés, et chaînes dotées de tels éléments

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