EP0879683A2 - Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine - Google Patents

Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine Download PDF

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Publication number
EP0879683A2
EP0879683A2 EP98109353A EP98109353A EP0879683A2 EP 0879683 A2 EP0879683 A2 EP 0879683A2 EP 98109353 A EP98109353 A EP 98109353A EP 98109353 A EP98109353 A EP 98109353A EP 0879683 A2 EP0879683 A2 EP 0879683A2
Authority
EP
European Patent Office
Prior art keywords
cutting tool
tool according
diamond
cutting
segments
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Withdrawn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
EP98109353A
Other languages
English (en)
French (fr)
Other versions
EP0879683A3 (de
Inventor
Paolo Bernieri
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.)
Stalber Srl
Original Assignee
Stalber Srl
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 IT97MI001214 external-priority patent/IT1291986B1/it
Priority claimed from IT001991 external-priority patent/IT1294371B1/it
Application filed by Stalber Srl filed Critical Stalber Srl
Publication of EP0879683A2 publication Critical patent/EP0879683A2/de
Publication of EP0879683A3 publication Critical patent/EP0879683A3/de
Withdrawn legal-status Critical Current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
    • B28D1/127—Straight, i.e. flat, saw blades; strap saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/123—Details of saw blade body
    • 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
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades

Definitions

  • diamond-tipped tools which may be constructed in the form of "diamond blades" or “diamond disks”.
  • Diamond blades consist of a band of tempered steel which normally has a cross-section of 180 x 3 mm and a length of about 4,000 mm. On their bottom edge, forming the cutting edge, they are provided with small abrasive inserts known as "diamond segments" fixed at a suitable distance from one another; these segments - there being, for example, 35 to 40 segments for each blade - have plan dimensions of 20 x 5 mm and a height of 7-8 mm.
  • Diamond segments of this type - such as those described for example in EP-A-0,090,274 - have the function of cutting the marble owing to the high abrasive effect of the diamond granules incorporated on them, under the pressure exerted by the blade-carrying group on the blades themselves during their alternating movement.
  • Diamond disks have a substantially equivalent structure: they consist of sheet-steel disks which have a thickness of 2.5 to 5 mm and a diameter for example of 30 mm to 3500 mm and which also have fixed on their external edge diamond segments equivalent - except for their dimensions - to those used for blades.
  • the cutting edge of the core In order to perform a cut which is perfectly flat it is essential that the cutting edge of the core should be kept tensioned: in the case of blades, the blades themselves are mounted on a blade-carrying group under longitudinal tension produced by special tensioning devices, while in the case of disks the tension of the edge is produced by the centrifugal force resulting from the high-speed rotation of the diamond disk.
  • a first object of the present invention is to propose an improved diamond-tipped tool with low noise emission. This object is achieved by means of the characteristic features indicated in Claim 1.
  • the invention also relates to a machine for cutting marble and stone, in particular a "diamond cutting frame" of the type comprising a blade-carrying group containing a plurality of diamond blade tools arranged alongside and parallel to one another.
  • the blade-carrying group of a sawing frame is made to perform, in addition to a longitudinal alternating movement, also a slow descending movement onto the block - or alternately, in accordance with less well-known arrangements, the blade-carrying group is kept at a fixed height and the block is made to perform a rising movement - in such a way that the block is "sawn" and transformed into a plurality of slabs.
  • a further object of the present invention is therefore that of providing a structure for a cutting machine, in particular for a diamond cutting frame, which has a low noise level. This object is achieved by means of the characteristic features indicated in Claim 22.
  • the idea underlying the present invention is that of obtaining a low noise emission not so much through the use of structures which prevent the noise from propagating outside the plant, but through the use of means which limit or dampen the noise-generating vibrations or which prevent the propagation of these vibrations, both to the tool and to the various moving parts of the machine.
  • this idea is realized by creating, as mentioned, a barrier between the cutting edge zone of the tool and the remaining part thereof, said barrier not only preventing the noise-generating vibrations from being transmitted, but also resulting in a substantial damping thereof.
  • a series of slots 3 covering the central zone of the blade is formed in a blade 1 which, in a known manner, is formed by a band of drawn sheet steel with a height a of about 180 mm and thickness of between 2.5 mm and 3.5 mm having fixed, on its cutting edge 1a, a plurality of diamond segments 2 which are arranged at a suitable distance from one another.
  • the slots 3 are inclined, parallel and arranged so that the ends of each of them are located above the ends of the immediately adjacent slots, for at least a short distance, corresponding to a zone running transversely with respect to the blade and defined by the pairs of broken lines F.
  • Said incisions 3 form, with respect to the cutting edge, an angle of the order of 20° to 40° and preferably 30°.
  • the incisions 3 are thin, for example have a width of between 2.5 and 3.5 mm, i.e. of the same order of magnitude as the thickness of the blade through which they pass.
  • the ends of said incisions 3 are formed in the manner of a spiral or curl 3a so that the incision may be prevented from propagating as a result of the tensile force in the longitudinal direction, to which the blade is subject during machining.
  • the incisions 3 and the spirals 3a are moreover filled with an elastomer material, for example a polyurethane, a synthetic rubber and in particular a rubber provided with sound-absorbing properties.
  • an elastomer material for example a polyurethane, a synthetic rubber and in particular a rubber provided with sound-absorbing properties.
  • This material is introduced and preferably vulcanized in situ where, also owing to the perfectly square cross-section of the incision 3, it adheres in a perfect and resistant manner.
  • the shape and the arrangement of the incisions 3 according to the invention allow the following to be achieved:
  • a further sound-damping effect may be obtained on the cutting tool by means of another characteristic feature of the invention, namely by increasing the bearing contact area of the blades inside the cutting groove.
  • a diamond blade of about 4000 mm length is normally provided with 35 to 40 diamond segments, each of which has a length of about 20 mm; this means that the blade section comprised between one diamond segment and the next one has a length of the order of 80 to 90 mm.
  • the edge of the blade is free: it is in fact separated from the bottom of the cutting groove by about 7-8 mm, i.e.
  • the edge of the blade is therefore able to vibrate.
  • the filling segments 5, 6 may be made of bronze or of any other relatively soft metallic material which is easily subject to wear, as well as a synthetic material suitable for stable fixing on the metal edge of the blade, for example hard rubber which can be fixed by means of vulcanization.
  • filling segments 5 and 6 Two possible embodiments of filling segments 5 and 6 are shown in Figures 2 and 3.
  • the filling segment 5 is in the form of a parallelepiped, which has a length for example of 20 to 30 mm, height of 7-8 mm and thickness of 3 to 5 mm; this segment has, on one of the larger vertical surfaces, inclined grooves 5a which are suitable for facilitating discharging of the washing water.
  • the filling segment 6 is similar to that shown in Fig. 2, but has inclined grooves 6a and 6b on both the opposite vertical surfaces; in particular these grooves 6a and 6b are oriented in opposite directions and intersect briefly in a central position where they form a window 6c which passes through the segment and is able to improve discharging of the washing water.
  • the number of filling segments may be chosen on the basis of their physical characteristics, in the sense that the vibration may be prevented by suitably choosing the number of filling segments, and in particular:
  • the present invention proposes obtaining the maximum sound-damping effect by modifying not only the tool, but also the machine.
  • FIGs 4 and 5 schematically show a blade-carrying group 11 containing a plurality of parallel blades 12 which are arranged alongside one another and suitably spaced and which are fixed, highly tensioned, onto the blade-carrying group, for example each subject to a load of the order of 9 tonnes.
  • the diamond blades therefore transmit their vibrations to the blade-carrying group, which acts as a resonance chamber.
  • the teaching of the present invention may certainly be transferred from the sector of diamond blades and disks (to which reference has been made by way of example in connection with the cutting of marble and stone) to other sectors using sawing tools without diamond segments, in which the cutting elements consist of other types of inserts made of hard material, such as VIDIA, or simply sharpened teeth which are formed directly in the sheet steel support core, as in the case of wood sawing machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP98109353A 1997-05-23 1998-05-22 Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine Withdrawn EP0879683A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMI971214 1997-05-23
IT97MI001214 IT1291986B1 (it) 1997-05-23 1997-05-23 Telaio perfezionato,a bassa emissione di rumore,per la segagione di materiali lapidei
IT001991 IT1294371B1 (it) 1997-09-01 1997-09-01 Utensile di taglio diamantato, a bassa emissione di rumore per la segagione di materiali lapidei
ITMI971991 1997-09-01

Publications (2)

Publication Number Publication Date
EP0879683A2 true EP0879683A2 (de) 1998-11-25
EP0879683A3 EP0879683A3 (de) 2000-12-20

Family

ID=26331507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109353A Withdrawn EP0879683A3 (de) 1997-05-23 1998-05-22 Geräuscharmes Steinschneidwerkzeug und dieses Werkzeug verwendende Maschine

Country Status (1)

Country Link
EP (1) EP0879683A3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1711310A2 (de) * 2003-12-23 2006-10-18 Diamond Innovations, Inc. Granitplattengeschnitten mit blätter mit diamanthaltigen segmenten einsetzender gattersäge und schneidverfahren dafür
EP1800785A1 (de) 2005-12-23 2007-06-27 BÖHLER-UDDEHOLM Precision Strip GmbH & Co KG Steingattersäge und Vormaterial
US7637257B2 (en) 2003-08-14 2009-12-29 Diamond Innovations, Inc. System and method for cutting granite or similar materials
WO2013026593A1 (de) * 2011-08-23 2013-02-28 Robert Bosch Gmbh Sägeblatt

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016661A (en) * 1959-11-02 1962-01-16 Waldemar C Nidlsen Cutting device
FR1568331A (de) * 1968-03-29 1969-05-23
US3799025A (en) * 1971-07-23 1974-03-26 Garbo P Vibration-damped rotatable cutting disk
JPS57184674A (en) * 1981-05-06 1982-11-13 Niro Inoue Stone cutting diamond blade
EP0141042A1 (de) * 1983-08-27 1985-05-15 Heinrich Mummenhoff Kreissägeblatt
JPS614617A (ja) * 1984-06-20 1986-01-10 Oishi Eng:Kk ゴム状突起を具えたダイヤモンドチツプソ−
US4718398A (en) * 1985-09-04 1988-01-12 Diamant Boart Societe Anonyme Circular saw for stony materials
EP0275860A1 (de) * 1987-01-08 1988-07-27 DIAMANT BOART Société Anonyme Sägeblatt für das Sägen von steinartigen Materialien
EP0400511A1 (de) * 1989-06-02 1990-12-05 Aktiebolaget Electrolux Ringförmiges Kreissägeblatt und Ringkreissäge mit Sägeblattantrieb
EP0839620A1 (de) * 1996-11-07 1998-05-06 Diamond Pauber S.r.l. Diamantiertes Schneidblatt zum Schneiden von defekten Steinmaterialien

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016661A (en) * 1959-11-02 1962-01-16 Waldemar C Nidlsen Cutting device
FR1568331A (de) * 1968-03-29 1969-05-23
US3799025A (en) * 1971-07-23 1974-03-26 Garbo P Vibration-damped rotatable cutting disk
JPS57184674A (en) * 1981-05-06 1982-11-13 Niro Inoue Stone cutting diamond blade
EP0141042A1 (de) * 1983-08-27 1985-05-15 Heinrich Mummenhoff Kreissägeblatt
JPS614617A (ja) * 1984-06-20 1986-01-10 Oishi Eng:Kk ゴム状突起を具えたダイヤモンドチツプソ−
US4718398A (en) * 1985-09-04 1988-01-12 Diamant Boart Societe Anonyme Circular saw for stony materials
EP0275860A1 (de) * 1987-01-08 1988-07-27 DIAMANT BOART Société Anonyme Sägeblatt für das Sägen von steinartigen Materialien
EP0400511A1 (de) * 1989-06-02 1990-12-05 Aktiebolaget Electrolux Ringförmiges Kreissägeblatt und Ringkreissäge mit Sägeblattantrieb
EP0839620A1 (de) * 1996-11-07 1998-05-06 Diamond Pauber S.r.l. Diamantiertes Schneidblatt zum Schneiden von defekten Steinmaterialien

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 029 (M-191), 5 February 1983 (1983-02-05) & JP 57 184674 A (NIROU INOUE), 13 November 1982 (1982-11-13) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 151 (M-483), 31 May 1986 (1986-05-31) -& JP 61 004617 A (OOISHI ENGINEERING:KK), 10 January 1986 (1986-01-10) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7637257B2 (en) 2003-08-14 2009-12-29 Diamond Innovations, Inc. System and method for cutting granite or similar materials
US7814895B2 (en) 2003-08-14 2010-10-19 Diamond Innovations, Inc. System and method for cutting granite or similar materials
US8047192B2 (en) 2003-08-14 2011-11-01 Ehwa Diamond Industrial Co., Ltd. System and method for cutting granite or similar materials
EP1711310A2 (de) * 2003-12-23 2006-10-18 Diamond Innovations, Inc. Granitplattengeschnitten mit blätter mit diamanthaltigen segmenten einsetzender gattersäge und schneidverfahren dafür
EP1711310A4 (de) * 2003-12-23 2009-05-13 Diamond Innovations Inc Granitplattengeschnitten mit blätter mit diamanthaltigen segmenten einsetzender gattersäge und schneidverfahren dafür
EP1800785A1 (de) 2005-12-23 2007-06-27 BÖHLER-UDDEHOLM Precision Strip GmbH & Co KG Steingattersäge und Vormaterial
WO2013026593A1 (de) * 2011-08-23 2013-02-28 Robert Bosch Gmbh Sägeblatt
CN103747907A (zh) * 2011-08-23 2014-04-23 罗伯特·博世有限公司 锯片

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