US20120225615A1 - Abrasive disc for a multiple disc grinding machine, in particular for processing stone and like materials, and a grinding machine including said disc - Google Patents

Abrasive disc for a multiple disc grinding machine, in particular for processing stone and like materials, and a grinding machine including said disc Download PDF

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Publication number
US20120225615A1
US20120225615A1 US13/497,940 US201013497940A US2012225615A1 US 20120225615 A1 US20120225615 A1 US 20120225615A1 US 201013497940 A US201013497940 A US 201013497940A US 2012225615 A1 US2012225615 A1 US 2012225615A1
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US
United States
Prior art keywords
disc
abrasive
discs
driving shaft
grinding machine
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.)
Abandoned
Application number
US13/497,940
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English (en)
Inventor
Dino Zandonella Necca
Ferruccio Gonzo
Carlo Artina
Riccardo Pettucco
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ADI SpA
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ADI SpA
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.)
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Publication date
Application filed by ADI SpA filed Critical ADI SpA
Assigned to ADI S.P.A. reassignment ADI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARTINA, CARLO, GONZO, FERRUCCIO, PETTUCCO, RICCARDO, ZANDONELLA NECCA, DINO
Publication of US20120225615A1 publication Critical patent/US20120225615A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D5/066—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments mounted axially one against the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots

Definitions

  • the present invention relates to an abrasive disc for a multiple disc grinding machine having the features set out in the preamble of the main claim.
  • the invention also relates to a multiple disc grinding machine including a plurality of discs of the above-mentioned type.
  • the invention is for use in particular in the sector of the processing of stone and like materials, in which use is made of multiple disc grinding machines having a plurality of cutting discs with abrasive segments combined in a pack on a shaft which may be caused to rotate.
  • multiple disc grinding machines of the above-mentioned type use is typically made of coolant fluids which are conveyed to the processing zones to ensure that the heat generated by processing, following contact between the abrasive sectors and the surfaces of the workpiece, is adequately dissipated.
  • the shaft is provided with an internal hole in order to convey the fluid to a distributor member, for instance a bushing interposed between the shaft and the discs and designed to collect the fluid and distribute it to the exterior of the discs in the processing zones.
  • This solution nevertheless requires the provision of a specific distributor member which has to be mounted when the cutting discs are being mounted on the multiple disc grinding machine.
  • a main object of the invention is to provide an abrasive disc for multiple disc grinding machines designed to provide a coolant distribution system which is structurally simpler and easier to use, but which continues to provide efficient cooling of the tool.
  • FIG. 1 is a perspective view of an abrasive disc for a multiple disc grinding machine according to the invention
  • FIG. 2 is a view in axial section of the disc of FIG. 1 ;
  • FIG. 3 is a view in partial section of a multiple disc grinding machine equipped with abrasive discs according to the invention.
  • an abrasive disc for a multiple disc grinding machine embodied in accordance with the present invention is shown overall by 1 .
  • a grinding machine equipped with a plurality of abrasive discs closed in a pack on a driving shaft 3 of the grinding machine which may be caused to rotate about an axis X is shown by 2 .
  • Only the cutting disc 1 will be described in detail below, as the features described mirror those of the remaining discs of the pack mounted on the shaft 3 .
  • the multiple disc grinding machine designed in this way is for particular use for the processing of stone and like materials but could be used in other fields, for instance for the processing of ceramics, refractory materials or glass.
  • the disc 1 comprises a disc-shaped support is which is axially symmetrical with a main axis shown by Y in the drawings and bears a circumferential rim 4 on which abrasive cutting sectors 5 are applied.
  • the transverse thickness of the disc at its central portion, measured parallel to the axis Y, is shown by 6 .
  • the support is also provided with a central hole 7 for connection to an end portion 3 a of the driving shaft 3 which causes the disc to rotate during cutting operations involving tangential contact between the rim 4 and the material to be processed.
  • connection hole 7 has a first cylindrical through section 7 a which comes into coupling contact with the driving shaft 3 and a second cylindrical through section 7 b extending as an axial continuation of the first section, this second section having a diameter greater than the first section.
  • annular chamber shown by 8 is formed at the location of the second through section 7 b, following connection with the shaft 3 , whose function will be explained in detail in the following description.
  • the sequence of through holes 7 a, 7 b extends through the entire transverse thickness 6 of the disc, so that the section 7 b extends, with its free end, up to the location of a front transverse surface of the disc shown by 9 .
  • This surface extends with an annular configuration from the hole 7 in the direction of the rim 4 over a predetermined radial development.
  • the front surface 9 is provided with at least one radial recess, shown by 10 , which extends from the annular chamber 8 in the direction of the rim 4 radially including the whole surface.
  • a preferred choice, shown in the appended drawings, is to provide three recesses 10 angularly spaced from one another at regular intervals (with an angular pitch of 120°), although the invention could function with other configurations.
  • the recesses 10 may also be readily provided on the front surface 9 by respective radial milling operations on the surface 9 . As is clearly shown in FIG.
  • the annular chamber 8 is connected in fluid communication with each of the recesses 10 so as to ensure a passage for a coolant fluid accumulated in the chamber and conveyed to the exterior of the disc via the recess 10 .
  • the driving shaft of the grinding machine 2 is provided with an internal axial duct 11 for supplying the coolant fluid, which duct is continued by one or a plurality of radial end ducts 12 opening at the location of cylindrical shell of the end portion of the shaft 3 designed to house the abrasive discs.
  • the thickness 6 of the disc 1 in contact with the shaft is smaller than the diameter of the hole 12 provided on the shaft, so as to ensure a passage for the coolant fluid from the chamber 8 containing the fluid to the recesses 10 , which recesses 10 therefore form a kind of channel for supplying the fluid to the exterior of the disc in order to distribute the fluid to the processing zones close to the abrasive sectors of the circumferential rim 4 .
  • annular chamber 8 in fluid connection with the recesses 10 therefore makes it possible for the coolant fluid to be accumulated in the chamber and then to flow radially, under the centrifugal effect of the rotation of the grinding machine, along the recesses so as efficiently to reach the processing zone of the abrasive sectors of the discs and thus to ensure the cooling of the surfaces in relative contact of the discs and the material being processed.
  • the cylindrical shell of the driving shaft 3 intended to receive the cutting discs may be provided with a groove 13 (or a plurality of grooves 13 ) extending axially along the whole pack of discs and in fluid communication with the supply holes 12 of the coolant fluid.
  • This groove may improve the distribution effect of the coolant fluid to each annular chamber of the discs mounted in a pack on the shaft, as shown in FIG. 3 , in the lower axial section of the grinding machine.
  • the invention thus achieves the objects set out above and provides many advantages over known solutions.
  • a main advantage lies in the simpler structure and operation of the cooling system which the invention applies to multiple disc cooling systems, avoiding the use of specific distribution members for the coolant fluid, such as the bushings or like distributors for which known solutions make provision.
  • This simpler structure is advantageously reflected by easier use, especially as regards operations to mount the pack of discs on the grinding machine and remove it therefrom, a major advantage when taking account of the fact that these tools have to be readily and rapidly interchangeable as a result of the wear of the abrasive profiles to which they are subject when processing materials.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US13/497,940 2009-09-25 2010-09-17 Abrasive disc for a multiple disc grinding machine, in particular for processing stone and like materials, and a grinding machine including said disc Abandoned US20120225615A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITPD2009A000280 2009-09-25
ITPD2009A000280A IT1395952B1 (it) 2009-09-25 2009-09-25 Disco abrasivo per mola multi-disco, particolarmente per lavorazione di materiali lapidei ed affini e mola includente detto disco
PCT/EP2010/063724 WO2011036104A1 (fr) 2009-09-25 2010-09-17 Disque abrasif pour machine de meulage à disques multiples, en particulier pour travailler la pierre et les matériaux similaires, et machine de meulage comprenant ledit disque

Publications (1)

Publication Number Publication Date
US20120225615A1 true US20120225615A1 (en) 2012-09-06

Family

ID=42140344

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/497,940 Abandoned US20120225615A1 (en) 2009-09-25 2010-09-17 Abrasive disc for a multiple disc grinding machine, in particular for processing stone and like materials, and a grinding machine including said disc

Country Status (8)

Country Link
US (1) US20120225615A1 (fr)
EP (1) EP2480376B1 (fr)
AU (1) AU2010299989A1 (fr)
CA (1) CA2710589C (fr)
ES (1) ES2771948T3 (fr)
IT (1) IT1395952B1 (fr)
PL (1) PL2480376T3 (fr)
WO (1) WO2011036104A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700013633A1 (it) * 2017-02-08 2018-08-08 Meccanotecnica Veneta S R L Testa operativa per utensile rotativo a disco e metodo di realizzazione di una testa operativa
IT201700013710A1 (it) * 2017-02-08 2018-08-08 Meccanotecnica Veneta S R L Gruppo operativo per utensile rotativo a disco e metodo di realizzazione di un gruppo operativo
CN112355918A (zh) * 2020-10-20 2021-02-12 黄莉 一种砂轮结构及其加工工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112496758B (zh) * 2020-11-11 2021-10-08 温州职业技术学院 一种机电自动化切磨一体机

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2094650A (en) * 1936-10-01 1937-10-05 Elisha W Hall Abrading or polishing tool
US2581934A (en) * 1949-04-04 1952-01-08 Firestone Tire & Rubber Co Abrading roll
US3109190A (en) * 1960-07-13 1963-11-05 Osborn Mfg Co Rotary brush with fluid channels
US3156274A (en) * 1961-07-27 1964-11-10 Alexander J Golick Mist lubricated ripsawing method and mechanisms
US3324607A (en) * 1964-08-13 1967-06-13 Super Cut Rotary grinding tool with interrupted abrasive helicoid
US3376673A (en) * 1964-09-08 1968-04-09 Super Cut Rotary cutter assembly for concrete leveler
US4341532A (en) * 1977-01-18 1982-07-27 Daichiku Co., Ltd. Laminated rotary grinder and method of fabrication
US5406929A (en) * 1992-12-18 1995-04-18 Hilti Aktiengesellschaft Grinding tool bit
US20020068518A1 (en) * 1998-02-06 2002-06-06 3M Innovative Properties Company Grinding wheel
US20030073396A1 (en) * 2001-10-15 2003-04-17 Fang-Chun Yu Diamond grinding wheel
US6872133B2 (en) * 2003-05-30 2005-03-29 Ehwa Diamond Industrial Co., Ltd. Wave saw blade
US20050126357A1 (en) * 2003-07-11 2005-06-16 Greg Brunton Cutting tool and method of use
EP1681137A1 (fr) * 2004-12-30 2006-07-19 Niesi Mr.Giuseppe Dispositif de meulage, son utilisation pour meuler des objets cylindriques, machine et procédé pour meuler des objets cylindriques
US20060217050A1 (en) * 2005-03-23 2006-09-28 Giovanni Ficai Cutting wheel
US20090117830A1 (en) * 2003-09-24 2009-05-07 Inland Diamond Products Company Ophthalmic roughing wheel
US20110130081A1 (en) * 2008-07-31 2011-06-02 Adi S.P.A. Grinding wheel, particularly for grinding work at a high feed speed
US20130052922A1 (en) * 2011-08-31 2013-02-28 Jang-Hyuk Ahn Grinding tool
US20130260655A1 (en) * 2010-12-06 2013-10-03 Komatsu Ntc Ltd. Grinding wheel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE730901C (de) * 1933-11-28 1943-01-28 Carl Krug Dr Ing Umlaufendes Schleifwerkzeug
JPS5422629Y2 (fr) * 1976-12-21 1979-08-06

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2094650A (en) * 1936-10-01 1937-10-05 Elisha W Hall Abrading or polishing tool
US2581934A (en) * 1949-04-04 1952-01-08 Firestone Tire & Rubber Co Abrading roll
US3109190A (en) * 1960-07-13 1963-11-05 Osborn Mfg Co Rotary brush with fluid channels
US3156274A (en) * 1961-07-27 1964-11-10 Alexander J Golick Mist lubricated ripsawing method and mechanisms
US3324607A (en) * 1964-08-13 1967-06-13 Super Cut Rotary grinding tool with interrupted abrasive helicoid
US3376673A (en) * 1964-09-08 1968-04-09 Super Cut Rotary cutter assembly for concrete leveler
US4341532A (en) * 1977-01-18 1982-07-27 Daichiku Co., Ltd. Laminated rotary grinder and method of fabrication
US5406929A (en) * 1992-12-18 1995-04-18 Hilti Aktiengesellschaft Grinding tool bit
US20020068518A1 (en) * 1998-02-06 2002-06-06 3M Innovative Properties Company Grinding wheel
US20030073396A1 (en) * 2001-10-15 2003-04-17 Fang-Chun Yu Diamond grinding wheel
US6872133B2 (en) * 2003-05-30 2005-03-29 Ehwa Diamond Industrial Co., Ltd. Wave saw blade
US20050126357A1 (en) * 2003-07-11 2005-06-16 Greg Brunton Cutting tool and method of use
US20090117830A1 (en) * 2003-09-24 2009-05-07 Inland Diamond Products Company Ophthalmic roughing wheel
EP1681137A1 (fr) * 2004-12-30 2006-07-19 Niesi Mr.Giuseppe Dispositif de meulage, son utilisation pour meuler des objets cylindriques, machine et procédé pour meuler des objets cylindriques
US20060217050A1 (en) * 2005-03-23 2006-09-28 Giovanni Ficai Cutting wheel
US20110130081A1 (en) * 2008-07-31 2011-06-02 Adi S.P.A. Grinding wheel, particularly for grinding work at a high feed speed
US20130260655A1 (en) * 2010-12-06 2013-10-03 Komatsu Ntc Ltd. Grinding wheel
US20130052922A1 (en) * 2011-08-31 2013-02-28 Jang-Hyuk Ahn Grinding tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700013633A1 (it) * 2017-02-08 2018-08-08 Meccanotecnica Veneta S R L Testa operativa per utensile rotativo a disco e metodo di realizzazione di una testa operativa
IT201700013710A1 (it) * 2017-02-08 2018-08-08 Meccanotecnica Veneta S R L Gruppo operativo per utensile rotativo a disco e metodo di realizzazione di un gruppo operativo
WO2018146608A1 (fr) * 2017-02-08 2018-08-16 Meccanotecnica Veneta S.R.L. Unité fonctionnelle pour un outil rotatif en forme de disque et procédé de fabrication d'une unité fonctionnelle
CN112355918A (zh) * 2020-10-20 2021-02-12 黄莉 一种砂轮结构及其加工工艺

Also Published As

Publication number Publication date
CA2710589A1 (fr) 2010-10-22
ES2771948T3 (es) 2020-07-07
PL2480376T3 (pl) 2020-05-18
ITPD20090280A1 (it) 2011-03-26
IT1395952B1 (it) 2012-11-02
AU2010299989A1 (en) 2012-04-26
EP2480376B1 (fr) 2019-11-13
CA2710589C (fr) 2013-09-24
WO2011036104A1 (fr) 2011-03-31
EP2480376A1 (fr) 2012-08-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ADI S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZANDONELLA NECCA, DINO;GONZO, FERRUCCIO;ARTINA, CARLO;AND OTHERS;REEL/FRAME:027918/0387

Effective date: 20120323

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION