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WO2006000542A1 - Tete de rubanage pour usiner des pieces a travailler faites de materiaux en pierre dure - Google Patents

Tete de rubanage pour usiner des pieces a travailler faites de materiaux en pierre dure Download PDF

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Publication number
WO2006000542A1
WO2006000542A1 PCT/EP2005/052827 EP2005052827W WO2006000542A1 WO 2006000542 A1 WO2006000542 A1 WO 2006000542A1 EP 2005052827 W EP2005052827 W EP 2005052827W WO 2006000542 A1 WO2006000542 A1 WO 2006000542A1
Authority
WO
WIPO (PCT)
Prior art keywords
tools
group
vertical axis
distance
lapping head
Prior art date
Application number
PCT/EP2005/052827
Other languages
English (en)
Inventor
Dario Toncelli
Original Assignee
Dario Toncelli
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 Dario Toncelli filed Critical Dario Toncelli
Priority to CA002568005A priority Critical patent/CA2568005A1/fr
Priority to US11/630,728 priority patent/US20080032613A1/en
Publication of WO2006000542A1 publication Critical patent/WO2006000542A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B24B41/0475—Grinding heads for working on plane surfaces equipped with oscillating abrasive blocks, e.g. mounted on a rotating head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • B24D99/005—Segments of abrasive wheels

Definitions

  • Lapping head for machining workpieces of hard stone materials *** Description The present invention relates to a lapping head for machining workpieces of hard stone materials, such as granite, porcelain-gres, ceramic material or agglomerate materials made using the Bretonstone technology, obtained by mixing together inert materials such as silica or quartz with organic binders such as polyester resins or inorganic binders such as Portland cement.
  • lapping heads with oscillating segments are conventionally used, namely heads which comprise a body rotating about a vertical axis and having, mounted thereon, a number of arms oscillating about an axis which is horizontal and arranged radially with respect to the rotary vertical axis of the head.
  • each arm has a tool holder on which a tool or abrasive segment is mounted.
  • all the arms have identical dimensions and also the tools have the same dimensions with the result that all the tools are arranged along a circumference at the same distance from the vertical axis of rotation.
  • the lapping/polishing action occurs as a result of the rotational movement of the abrasive tools about the vertical axis of rotation of the head, while each diamond tool (which has a working surface consisting of a cylindrical portion) swings about its radial axis of oscillation and always ensures a tangential contact of the tool with the workpiece being machined.
  • the tools cover a circular ring, leaving necessarily uncovered a circular area in the centre of the head, for the purpose of allowing oscillation of the arms without collision between the adjacent tools.
  • Lapping machines comprise a bench with a moving belt on which the material to be lapped rests and a beam positioned above the belt and arranged parallel with the said belt.
  • Various rotary spindles are mounted in an aligned manner along the beam and at the bottom end of each of them a lapping head provided with diamond tools is mounted, as explained above.
  • the beam is moved back and forth transversely wrth respect to the belt while, at the same time, each lapping head is driven into rotation about its vertical axis and each tool swings about its radial axis of oscillation.
  • the heads are pressed toward the workpiece to be machined so that the tools are brought into contact at a given pressure against the said material and, owing to their swinging movement, are able to perform the lapping of hard materials since a high specific pressure is generated along the tangential line of contact, whereby an aggressive action is exerted on the stone material.
  • the back and forth movement of the beam instead allows lapping of the workpiece, usually in the form of slabs, over its entire surface. ⁇ .
  • the pressing force which the head exerts against the workpiece is uniformly counter-balanced by the reaction of the workpiece on the tools.
  • the pressing force of the heads is no longer counter-balanced in an uniform and regular manner. In other words the head tends to "collapse" on the side where the tools do not rest completely on the material to be lapped. Owing to this phenomenon, machining no longer occurs in a uniform manner and consequently the abovementioned defects may arise.
  • the object of the present invention is therefore to envisage a new head for lapping/polishing workpieces of hard materials or in any case to provide the polishing head with particular contrivances which make the above mentioned surface defects invisible, or nearly so, to the naked eye.
  • a lapping/polishing head for workpieces of hard stone materials comprising a body rotating about a vertical axis and having tools mounted thereon, each tool swinging about an axis arranged radially with respect to said vertical axis and the said tools being circumferentially equidistant from each other, characterized in that said tools are divided into at least two groups of tools, each group being positioned at a distance from said vertical axis different from that of each other group, the tools of each group being equidistant from said vertical axis and arranged in a circumferentially equidistant manner with respect to each other.
  • the tools are six in number, circumferentially equidistant from each other, so as to form an angle of 60° relative to each other
  • said six tools are divided into two groups, each group consisting of three tools circumferentially equidistant from each other so as to form an angle of 120° relative to each other.
  • the tools of a group are arranged on a circumference which is smaller than the other and outer circumference and this is possible due to the fact that the 120° spacing between tools of a same group prevents them to collide during their swinging movement. It is obvious that in this way the overall working surface of the tools, i.e.
  • the surface that rests on the workpiece being machined is no longer concentrated on the outer circumferential part so as to define an outer ring, but is distributed over two rings, an outer ring and an inner ring, for which reason the central circular area not c . covered by the tools during rotation of the head is greatly redwced.
  • the tools arranged at a greater distance from the vertical axis of rotation of the head do not rest completely in each instant on the surface of the workpiece being machined, the tools positioned more close to said axis instead always remain in contact with the workpiece.
  • FIGS 2a, 2b show views, similar to the preceding views, of a lapping head according to the present invention.
  • the lapping head according to the invention with reference to Figures 2a, 2b will be described, even if the same reference numerals have been used in Figures Ia, Ib in order to indicate elements which are structurally or functionally equivalent.
  • 10 denotes overall a lapping head for machining workpieces of hard stone materials such as, for example, granite, ceramic materials, gres or agglomerate obtained by means of Bretonstone technology using silica or quartz-based inerts.
  • the lapping head 10 comprises a box-like body 12 with an approximately cylindrical shape rotating about a vertical axis Y and having a plurality of arms 14 mounted on its bottom side. At the bottom end of each arm 14 there is a tool-holder 18 on which a diamond coated tool 20 is mounted. More precisely, the head 10 has six arms 14a,b,c,d,e,f which are mounted on the body 12 so as to be able to swing about respective axes of oscillation 16a,b,c,d,e,f. The bottom side of each arm 14a,b,c,d,e,f carries a tool-holder respectively denoted by 18a,b,c,d,e,f on which a diamond tool 20a,b,c,d,e,f is fixed.
  • the axes of rotation 16a,b,c,d,e,f of the arms 14a,b,c,d,e,f are arranged in a circumferentially equidistant manner, namely spaced by 60° with respect to each other.
  • the box-shaped body 12 houses driving means 12 which, owing to the rotational movement about the axis Y imparted to the lapping head, transmit the swinging movement to each of the six arms 14a,b,c,d,e,f.
  • the six oscillating arms 14a,b,c,d,e,f are of two types so as to form two separate groups: a first group consisting of the arms 14a,c,e and a second group consisting of the arms 14b,d,f. Both groups comprise three arms which are mounted on the head 10 so as to be circumferentially equidistant, forming an angle of 120° relative to each other, and equidistant from the vertical axis of rotation Y. Essentially the arms of the first group alternate with those of the second group.
  • the second group of arms 14b,d,f is such that the respective tool-holders 18b,d,f are positioned at a distance from the vertical axis of rotation Y smaller than the corresponding distance of the tool-holders 18a,c,e of the first group of arms 14a,c,e so that the tools 20b,d,f supported by the second group of oscillating arms 14b,d,f are also situated at a distance from the axis Y smaller than that of the tools 20a,c,e supported by the first group of oscillating arms 14a,c,e.
  • the tools of each group therefore define a radial extension defined by their maximum and minimum distance from the vertical axis Y.
  • the arrangement of one group of tools could be of such a radial extension that it does not to result in partial overlapping relative to the tools of the other group, in particular the two groups of tools can be adjacent.
  • the tools instead of all being of the same radial length, could have a varied length.
  • the tools in each group could be of the same length, but the length of the tools in one group could be other than the length of the tools in the other group.
  • the lapping/polishing head could have a different number of arms such as, for example, a head with nine arms, and therefore nine tools, circumferentially equidistant from each other so as to form an angle of 40° relative to each other.
  • the nine arms and tools may be subdivided into three groups of even number, each group being arranged at a different distance from the vertical axis Y and in such a way that the tools of each group are circumferentially equidistant from each other at an angle of 120° relative to each other.
  • — 1
  • the nine arms and tools which are circumferentially equidistant from each other so as to form an angle of 40° relative to each other, could be subdivided into two groups: a first group of three arms and three tools circumferentially equidistant from each other so as to form an angle of 120° relative to each other and arranged at a smaller distance from the vertical axis Y than the second group of six arms and six tools arranged in pairs and circumferentially equidistant from each other so as to form an angle of 120° relative to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

L'invention porte sur une tête de rubanage (10) permettant d'usiner une pièce à travailler faite de matériaux en pierre dure, comprenant un corps (12) qui pivote autour d'un axe vertical (Y) et est doté d'instruments (20a,b,c,d,e,f) montés dessus de manière que chaque instrument puisse pivoter autour d'un axe disposé dans le sens radial par rapport à l'axe vertical (Y). Les instruments (20a,b,c,d,e,f) sont subdivisés en au moins deux groupes d'instruments (20a,c,e and 20b,d,f) disposés à des distances différentes de l'axe vertical (Y). Dans chaque groupe, les instruments sont équidistants de l'axe vertical (Y) et sont disposés de manière équidistante dans le sens de la circonférence.
PCT/EP2005/052827 2004-06-24 2005-06-17 Tete de rubanage pour usiner des pieces a travailler faites de materiaux en pierre dure WO2006000542A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002568005A CA2568005A1 (fr) 2004-06-24 2005-06-17 Tete de rubanage pour usiner des pieces a travailler faites de materiaux en pierre dure
US11/630,728 US20080032613A1 (en) 2004-06-24 2005-06-17 Lapping Head for Machining Workpieces of Hard Stone Materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000311U ITMI20040311U1 (it) 2004-06-24 2004-06-24 Testa di le igatura per materiali lapidei duri
ITMI2004U000311 2004-06-24

Publications (1)

Publication Number Publication Date
WO2006000542A1 true WO2006000542A1 (fr) 2006-01-05

Family

ID=34972308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/052827 WO2006000542A1 (fr) 2004-06-24 2005-06-17 Tete de rubanage pour usiner des pieces a travailler faites de materiaux en pierre dure

Country Status (6)

Country Link
US (1) US20080032613A1 (fr)
KR (1) KR20070024587A (fr)
CA (1) CA2568005A1 (fr)
ES (1) ES2304865B1 (fr)
IT (1) ITMI20040311U1 (fr)
WO (1) WO2006000542A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090224A1 (it) * 2009-11-25 2011-05-26 Luca Toncelli Macchina di levigatura o lucidatura di lastre di materiale lapideo, quale pietra naturale e agglomerata, ceramico e vetro.
EP3059060A1 (fr) 2015-02-18 2016-08-24 Airtec AG Élement de ressort destine a une machine de traitement du sol
IT202000004387A1 (it) * 2020-03-02 2021-09-02 Ancora Spa Testa per il trattamento di lastre in materiale ceramico e simili

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510603A2 (fr) * 1991-04-23 1992-10-28 Simec S.P.A. Tête de meulage, en particulier pour le polissage du marbre, granit et matériau pierreux en général
EP0649706A1 (fr) * 1993-09-22 1995-04-26 Luca Toncelli Tête à faire le lapping et le polissage pour granit et des roches semblables
EP0667210A1 (fr) * 1994-02-09 1995-08-16 Simec S.P.A. Tête de polissage, en particulier pour plaques de marbre, granit, céramique, et autres matériaux pierreux
EP1046467A1 (fr) * 1999-04-16 2000-10-25 F.I.M.A.D. s.r.l. Machine de polissage comprenant une tête de polissage portant une pluralité de secteurs de polissage ayant une structure segmentée et élastique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105634A (en) * 1936-04-10 1938-01-18 Marbriere De Paris Sa Soc Machine for facing the surfaces of hard substances by pressure
US4646473A (en) * 1984-05-08 1987-03-03 Udviklingscentret Hansen Method and apparatus for finishing surfaces
US4965965A (en) * 1988-07-06 1990-10-30 Wallin Sven E Grinding head for surfacing and polishing stone, marbles and other hard materials
IT1243109B (it) * 1990-03-17 1994-05-24 Zambon Off Mec Flli Testa rotante a pattini oscillanti per spianare e lucidare superfici di granito, ceramiche o marmi
IT1292726B1 (it) * 1997-05-14 1999-02-11 Luigi Pedrini Testa di lucidatura per materiali lapidei in granito, pietre dure o materiale ceramico, dotata di moto tangenziale oscillante continuo dei
AU737749B2 (en) * 1997-11-03 2001-08-30 Hh Patent A/S Method for sanding surfaces on items

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510603A2 (fr) * 1991-04-23 1992-10-28 Simec S.P.A. Tête de meulage, en particulier pour le polissage du marbre, granit et matériau pierreux en général
EP0649706A1 (fr) * 1993-09-22 1995-04-26 Luca Toncelli Tête à faire le lapping et le polissage pour granit et des roches semblables
EP0667210A1 (fr) * 1994-02-09 1995-08-16 Simec S.P.A. Tête de polissage, en particulier pour plaques de marbre, granit, céramique, et autres matériaux pierreux
EP1046467A1 (fr) * 1999-04-16 2000-10-25 F.I.M.A.D. s.r.l. Machine de polissage comprenant une tête de polissage portant une pluralité de secteurs de polissage ayant une structure segmentée et élastique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090224A1 (it) * 2009-11-25 2011-05-26 Luca Toncelli Macchina di levigatura o lucidatura di lastre di materiale lapideo, quale pietra naturale e agglomerata, ceramico e vetro.
WO2011064706A1 (fr) * 2009-11-25 2011-06-03 Luca Toncelli Machine permettant de lisser et de polir des dalles en pierre, telle qu'une pierre naturelle ou agglomérée, de la céramique et du verre
US9238291B2 (en) 2009-11-25 2016-01-19 Luca Toncelli Machine for smoothing or polishing slabs of stone materials, such as natural and aggolomerated stone, ceramic and glass
EP3059060A1 (fr) 2015-02-18 2016-08-24 Airtec AG Élement de ressort destine a une machine de traitement du sol
IT202000004387A1 (it) * 2020-03-02 2021-09-02 Ancora Spa Testa per il trattamento di lastre in materiale ceramico e simili

Also Published As

Publication number Publication date
ES2304865B1 (es) 2009-10-27
ES2304865A1 (es) 2008-10-16
US20080032613A1 (en) 2008-02-07
KR20070024587A (ko) 2007-03-02
CA2568005A1 (fr) 2006-01-05
ITMI20040311U1 (it) 2004-09-24

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