WO2011061765A1 - Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé - Google Patents

Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé Download PDF

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Publication number
WO2011061765A1
WO2011061765A1 PCT/IT2009/000517 IT2009000517W WO2011061765A1 WO 2011061765 A1 WO2011061765 A1 WO 2011061765A1 IT 2009000517 W IT2009000517 W IT 2009000517W WO 2011061765 A1 WO2011061765 A1 WO 2011061765A1
Authority
WO
WIPO (PCT)
Prior art keywords
slab
smoothing
heads
tool
along
Prior art date
Application number
PCT/IT2009/000517
Other languages
English (en)
Inventor
Luca Bonato
Original Assignee
Mbd S.R.L
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 Mbd S.R.L filed Critical Mbd S.R.L
Priority to EP09802023A priority Critical patent/EP2501519A1/fr
Priority to PCT/IT2009/000517 priority patent/WO2011061765A1/fr
Publication of WO2011061765A1 publication Critical patent/WO2011061765A1/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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/224—Portal grinding machines; Machines having a tool movable in a plane
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power

Definitions

  • the present invention relates to a method for smoothing-polishing surfaces of stone materials, ceramics, marble, granite and the like, herein below simply defined as polishing method.
  • the present invention further relates to a smoothing-polishing machine suitable for performing the above-mentioned method .
  • the operating heads applied on the common smoothing-polishing machines comprise many abrading tools, equipped with an oscillating motion and radially and circumferentially arranged around the rotation axis of the operating head.
  • the operating heads are assembled on a framework that gives them a rectilinear reciprocating motion (working motion) with perpendicular direction with respect to the slab advancement direction.
  • Such construction arrangement has at least two operating inconveniences: the imperfect planarity of the smoothed surface and a very slow working speed, which result from the rectilinear reciprocating motion of the operating heads.
  • Object of the present invention is solving the above prior art problems, by providing a smoothing- polishing machine that allows a perfect planarity of the smoothed surface and a high working speed.
  • a further object of the present invention is providing a polishing method for the slab made of stone material which is able to make the slab working uniform along the whole irregular profile of the slab.
  • Such method consists in a combination of the continuous advanced movement of the slab with the tool motion, so that each tool-holder head, pressing on the slab surface through the tools integral therewith, moves along the slab reducing at an indispensable minimum the detachment of the tool from the slab.
  • This object is reached by controlling the position of the tool-carrier heads, which move along the slab profile avoiding to bump against the slab edges.
  • figures 1, 2 and 3 representation of a preferred embodiment of the machine with fixed axis suitable for polishing regular slabs of the present invention
  • figure 4 diagram of the interaction along an irregular edge of a tool-holder head seen by an observer placed on the fixed axis K of the machine ;
  • FIG. 6 graphic diagram of the radial translation of a specific tool-holder head
  • figure 7 axonometric representation in orthogonal projection of a machine with tool- carrier heads actuated by an independent actuator
  • figure 8 axonometric detail of the guiding support of the tool-holder head.
  • the operating heads 1, arranged radially with respect to the vertical axis "K”, are applied on a un chassis, globally designated with reference 2, rotating around the above axis.
  • every operating head 1 is supported and is sliding, through the support 3, on the guides 4, integral between the central body 5 and each one of the projecting wings 6 composing the chassis 2.
  • the radial adjustment of the operating heads 1 is performed through threaded pins 7, which are engaged by respective supports 3, placed in simultaneous rotation through the transmission assembly 8, contained inside the central body 5, composed of two bevel gear pairs 9 and of two transmission pinions 10 and rotated through the action of the motor 11 of the transmission 12, that moves one of the above pins .
  • the whole supporting chassis of the operating heads 1 is applied on the lower part of a cylindrical body 13, which is anchored, with points 14, on the carrier structure 15 of the machine.
  • the rotation of the chassis 2 and therefore of the individual operating heads 1 around the vertical axis "K" is performed by using a fifth wheel 16, interposed between the central body 5 of the moving chassis and the fixed cylindrical body 13, where the ring 17 is integral with the above cylindrical body, while the internal toothed ring 18, integral with the above central body 5, is rotated through the motor 19, equipped with the pinion 20, fastened to the base of said cylindrical body.
  • the polishing method of the invention refers to the use of the above-described machine, in which every operating head 1 moves along cyclical trajectories resulting from the rotary movement around its own axis and the rotation of the structure 2 around the central axis K.
  • the above-described machine provides for lifting the tool-carrier heads when there are slabs having irregular edges.
  • pneumatic means make the tool applied to the head 1 move away from the slab 100 during the head transit next to the recesses of the irregular edge of the slab; and said pneumatic means take care of restoring the tool/slab contact by following the same vertical trajectory but in reverse, when the tool is next to the slab.
  • the tool approaching towards the slab to be polished along an orthogonal trajectory is the single known solution to avoid that the slab edge is crushed or the diamond tool gets damaged.
  • the limits of this method are linked to the need of having to control the impact and working pressure speed of the tool in contact with the surface of the slab 100.
  • the slab 100 is composed of an entry side and an exit side and of two side edges, which are parallel or irregular with recesses 51; such slab 100 is pushed along the side edges by means of a conveyor belt and is subjected to the abrading and cutting action given by the multitude of tools 1 equipped with a peripheral sped compatible with optimum abrasion and cutting parameters of the stone material.
  • Such tools 1 move along a predefined path along the surface o the slab, and the motion imparted by the conveyor belt and the predefined path of the tools are combined in order to completely cover the surface of the slab 100: in this way, the contact between the slab 100 and the tools 1 is free of interruptions along the irregular edges of the slab 100.
  • a controller of the electronic type governs the detachment and the approach of the tool-holder head with respect to the slab, complying with set values of pressure and descent speed depending on the physical nature of the stone to be polished.
  • An application of the polishing method of the present invention comprises a slab 100 made of stone material, with indefinite length and width H, in a continuous advancement along direction AD.
  • a spindle 2 with maximum diameter D supports a series of tool- carrier heads 1 arranged radially with the same angular pitch.
  • the tools are of a cylindrical shape, the circular base having a diameter d and the cylinder height being h.
  • Spatula-type tools also fall within the scope of the method: these tools move along pendulum-type trajectories associated with the tool-holder head rotation.
  • the spindle 2 continuously rotates with respect to the fixed axis K perpendicular to the surface of the slab 100; the tool-carrier heads 1 rotate at a speed corresponding to the peripheral cutting speed Vp compatible with the characteristics of the material of the slab to be polished.
  • the number of tool-carrier heads 1, arranged radially along the circumference D of the spindle 2, is set.
  • the tool-carrier heads are four la, lb, lc and Id.
  • a controller C correlates data transmitted by a device S for measuring the shape of the slab 100 to be polished with: the slab advancement speed along direction AD; the rotation speed of the spindle 2 with respect to the fixed axis K; each actuator M having the task of moving radially along the guides 52 of each tool-holder head 1.
  • the controller C rebuilds the shape of the slab 100 and correlates the angular position of each tool-holder head 1 with the position of the slab 100 along the translation plan depending on the advancement speed of the slab 100.
  • a dedicated protocol connected to the controller C, manages the interaction of the profile of the slab 100 with respect to the size of the tool with diameter d integral with the tool-holder head 1.
  • the software rebuilds the interaction with respect to the recessed edge 51, computing the value of arm R depending on the recessed edge 51.
  • the thereby collected data are used to control every actuator M, which changes the radial position of each tool- holder head la, lb, lc and Id.
  • each actuator M connected to the tool-holder head 1 ensures that the tool is kept inside the edge of the slab 100 independently from the geometric shape and therefore the presence of the recesses 51.
  • This arrangement removes every sort of manual adjustment in order to adapt the working distance D to the width H of the slab 100.
  • the tool detachment from the slab 100 is limited to the entry and exit steps of the slab 100, namely to the lower and upper edges of the slab 100.
  • the machine is further equipped with a single actuator connected to the spindle 2 which vertically moves the spindle 2 depending on the slab thickness.
  • a simplified version of the machine of the invention provides for the use of a single actuator for the radial movement of the heads 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne une machine de polissage-parachèvement pour produits (100) de type dalle constitués d'un matériau pierreux, tel que du marbre, du granite ou un agglomérat, entre autres, ladite machine comportant au moins deux têtes (1) de travail à axe vertical, montées et réparties régulièrement dans les sens radial et circonférentiel sur un bâti animé d'un mouvement tournant autour d'un axe vertical fixe, et qui effectuent l'opération de polissage-parachèvement de la dalle (100) composée d'un côté d'entrée et d'un côté de sortie ainsi que de deux bords latéraux, parallèles ou irréguliers avec renfoncements (51) ; les têtes (1) se déplacent en suivant un parcours prédéfini le long de la surface de la dalle (100), avec des mouvements de travail combinés afin de couvrir entièrement la surface de la dalle (100), le contact entre la dalle (100) et les têtes (1) étant ininterrompu le long des bords irréguliers de la dalle (100).
PCT/IT2009/000517 2009-11-17 2009-11-17 Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé WO2011061765A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09802023A EP2501519A1 (fr) 2009-11-17 2009-11-17 Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé
PCT/IT2009/000517 WO2011061765A1 (fr) 2009-11-17 2009-11-17 Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2009/000517 WO2011061765A1 (fr) 2009-11-17 2009-11-17 Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé

Publications (1)

Publication Number Publication Date
WO2011061765A1 true WO2011061765A1 (fr) 2011-05-26

Family

ID=42830300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2009/000517 WO2011061765A1 (fr) 2009-11-17 2009-11-17 Procédé de polissage-parachèvement de surfaces de matériaux pierreux et machine associée audit procédé

Country Status (2)

Country Link
EP (1) EP2501519A1 (fr)
WO (1) WO2011061765A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354086A (zh) * 2014-10-30 2015-02-18 安徽鼎恒再制造产业技术研究院有限公司 一种磨床用双向打磨装置
CN110153856A (zh) * 2019-06-17 2019-08-23 巢湖云海镁业有限公司 一种镁合金零件生产用的打磨装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1267230A (fr) * 1960-06-04 1961-07-21 Perfectionnements apportés aux machines à surfacer les pierres telles que marbres, granits ou granitos
FR2480173A1 (fr) * 1980-04-15 1981-10-16 Virelec Dispositif et procede de travail automatique pour machine de polissage des pierres
EP1190816A1 (fr) * 2000-09-20 2002-03-27 Z. BAVELLONI S.p.A. Appareil pour l'usinage des bords de plaques de verre
EP1477276A1 (fr) * 2003-05-16 2004-11-17 Mbd S.R.L. Tête de polissage pour dalles de pierre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1267230A (fr) * 1960-06-04 1961-07-21 Perfectionnements apportés aux machines à surfacer les pierres telles que marbres, granits ou granitos
FR2480173A1 (fr) * 1980-04-15 1981-10-16 Virelec Dispositif et procede de travail automatique pour machine de polissage des pierres
EP1190816A1 (fr) * 2000-09-20 2002-03-27 Z. BAVELLONI S.p.A. Appareil pour l'usinage des bords de plaques de verre
EP1477276A1 (fr) * 2003-05-16 2004-11-17 Mbd S.R.L. Tête de polissage pour dalles de pierre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354086A (zh) * 2014-10-30 2015-02-18 安徽鼎恒再制造产业技术研究院有限公司 一种磨床用双向打磨装置
CN110153856A (zh) * 2019-06-17 2019-08-23 巢湖云海镁业有限公司 一种镁合金零件生产用的打磨装置

Also Published As

Publication number Publication date
EP2501519A1 (fr) 2012-09-26

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