EP1422023A1 - Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien - Google Patents

Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien Download PDF

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Publication number
EP1422023A1
EP1422023A1 EP02425570A EP02425570A EP1422023A1 EP 1422023 A1 EP1422023 A1 EP 1422023A1 EP 02425570 A EP02425570 A EP 02425570A EP 02425570 A EP02425570 A EP 02425570A EP 1422023 A1 EP1422023 A1 EP 1422023A1
Authority
EP
European Patent Office
Prior art keywords
wheelhead
machine
working
slab
propeller shaft
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Withdrawn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
EP02425570A
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English (en)
French (fr)
Inventor
Ernesto Comandulli
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.)
Comandulli Costruzioni Meccaniche Srl
Original Assignee
Comandulli Costruzioni Meccaniche 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
Application filed by Comandulli Costruzioni Meccaniche Srl filed Critical Comandulli Costruzioni Meccaniche Srl
Priority to EP02425570A priority Critical patent/EP1422023A1/de
Publication of EP1422023A1 publication Critical patent/EP1422023A1/de
Withdrawn legal-status Critical Current

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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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor
    • 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
    • B24B41/002—Grinding heads
    • 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain

Definitions

  • the present invention relates to a machine for working edges of marble-like slabs, of the type comprising the features set out in the preamble of claim 1.
  • a spindle Operatively associated with the tool-carrying carriage is a spindle essentially including a wheel-carrying head or "wheelhead" fastened to the end of a telescopically extensible shaft, the opposite end of which is connected to an electric motor.
  • a fluid-operated actuator controls extension of the drive shaft to axially move a grinding wheel fastened to the wheelhead, between a rest condition at which it is spaced apart from the workpiece, and a work condition at which it operates in thrust relationship on one edge of the workpiece, so as to cause working of same by effect of the rotation imparted to the grinding wheel in combination with translation of the carriage relative to the support framework.
  • a kinematic oscillation mechanism may be interposed between the tool-carrying carriage and the spindle, by which mechanism the spindle can be moved in a plane perpendicular to the carriage-movement direction, so that the wheel substantially describes an arc around the workpiece edge.
  • the Applicant aims at overcoming the above described drawbacks so as to obtain a machine adapted to carry out working of slabs of marble-like material even of differently-shaped profiles. in a completely automatic and satisfactory manner.
  • the machine 1 has a support framework 2 defining a horizontal working plane 3 at the upper part thereof, on which plane a slab of marble-like material 4 (represented in chain line) is disposed.
  • a plurality of movable abutment elements 5 supported by a bridge girder 6 extending above the working plane 3 facilitates positioning of slab 4 so that an edge under working 4a of same is disposed parallel to one side of the working plane itself.
  • a plurality of presser elements 7 or locking means of other type also supported by the bridge girder 6 to be brought into action by fluid-operated means to cause locking of slab 4 during working.
  • the machine 1 further comprises a tool-carrying carriage 8 supported in cantilevered fashion by the framework 2 and movable along the latter, in parallel to the edge being worked 4a of the marble-like slab 4.
  • a spindle 9 essentially comprising a motor 10 and a wheelhead 11 operatively connected to a propeller shaft 12 to be set in rotation by the motor itself.
  • the wheelhead 11 is disposed along an axis X-X which is parallelly offset with respect to,the axis Y-Y of the propeller shaft 12 and connected to the latter by a kinematic mechanism for transmission of the rotary motion, generally identified by 13.
  • the wheelhead essentially comprises an auxiliary stem 14 rotatably carried by a connecting plate 15 in turn rotatably in engagement with an end portion of the propeller shaft 12, on the opposite side with respect to motor 10.
  • the motion-transmitting kinematic mechanism 13 preferably comprises a first pulley 18 integral with the propeller shaft 12, a second pulley 17 integral with the auxiliary stem 14, and a driving belt 19 operatively looped around the first and second pulleys 18, 17.
  • the belt 19 and pulleys 18, 17 are of the toothed type.
  • the auxiliary stem 14 is adapted to engage at least one diamond wheel 16 or other appropriate tool, preferably with the aid of quick-coupling members not further described or shown in detail because known by themselves and conventional.
  • At least one channel 20 opening close to the wheel 16 is provided to be advantageously formed along the auxiliary stem 14; said channel is connected on its side opposite to the wheel, with a feeding duct 21 through which, by known means not further described, a cooling fluid is supplied during working.
  • At least one fluid-operated actuator 22 is also provided to operate on the connecting plate 15 upon command of which translation of the wheelhead 11 is caused between a rest condition at which, as shown in Fig. 2, said head is moved away from the working plane 3, and an operating condition at which, as shown in chain line in Fig. 1, it is pushed towards the working plane 3 to cause the wheel 16 to act with a predetermined pressure against the edge under working 4a of the marble-like slab 4.
  • actuator 22 operates on a first end 23a of a rod 23 sliding along guide members 24 integral with motor 10.
  • a second end 23b of the rod, opposite to the first end, is fastened to the connecting plate 15 to cause movement thereof upon command of actuator 22.
  • the propeller shaft 12 consists of a first portion 12a and a second portion 12b telescopically connected with each other, so as to follow the connecting plate 15 movement away from and close to motor 10 without adversely affecting transmission of the rotary motion.
  • the quick-coupling members enable the wheelhead 11 to automatically engage wheel 16 when the latter is brought to the operating condition, carriage 10 being positioned in front of a tool-storing unit 25 fastened to a first end portion 2a of the support framework.
  • a kinematic angular-oscillation mechanism 26 should be interposed between the tool-carrying carriage 8 and spindle 9; upon command of said mechanism the angular oscillation of the whole spindle 9 around an axis substantially coincident with the longitudinal extension of the slab edge 4a being worked can be operated so as to enable chamfered or rounded-off edges to be worked.
  • Operation of the machine in accordance with the present invention is essentially as follows. Once fastening of the marble-like slab 4 to the working plane 3 has been carried out by the locking means 7, the grinding wheel 16 previously mounted on the wheelhead 11 is driven in rotation upon the action of motor 10 and brought into thrust relationship against the edge under working 4a by the fluid-operated actuator 22.
  • the tool-carrying carriage 8 performs a translation parallel to the edge under working 4a so as to move the wheel 16 along the latter.
  • the offset axial arrangement of the wheelhead 11 relative to axis Y-Y of motor 10 and of the propeller shaft 12 causes the wheel itself to jut out, at least at its outer diameter, beyond the overall side dimensions of spindle 9 as a whole. This circumstance enables the wheel 16, during working of marble-like slabs having an angled shape as shown in Fig.
  • Working may involve execution of one or more runs of tool 16 along the edge being worked 4a, concurrently with possible angular displacements of the whole spindle 9 by means of the kinematic angular-oscillation mechanism 26, to give the edge 4a a rounded profile, for example.
  • replacement of wheel 16 may be also provided, in order to use differently-grained wheels in succession, for example.
  • the tool-carrying carriage 8 is positioned at the first end 2a of the support framework 2 and the wheelhead 11 is brought close to the storage unit 25, so as to enable deposit of the used wheel into the unit itself and picking up of a new wheel to be used.
  • the wheelhead and the whole spindle 9 therewith are advantageously provided to be mounted on one side of the tool-carrying carriage 8 facing the second end portion 2b of the framework opposite to the first end portion 2a.
  • the storage unit 25 is disposed on the opposite side relative to the projecting portion 4b of the slab 4 under working, so as to avoid any risk of mechanical interferences with the latter during the tool-changing operation.
  • the present invention achieves important advantages.
  • the machine in reference is in fact adapted to carry out working of slab edges of angled shape, until close to the corner determined by the intersection between edges extending in converging directions. Therefore working of this type of slabs is allowed without manual interventions for adjustment and finishing of the workpiece being required, which interventions are on the contrary necessary when machines of the known type are used where, due to mechanical interferences between the spindle components and the projecting portion of the slab, moving forward of the wheel along the edge under working must be interrupted some distance far from the intersection point.

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  • 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)
EP02425570A 2002-09-20 2002-09-20 Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien Withdrawn EP1422023A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02425570A EP1422023A1 (de) 2002-09-20 2002-09-20 Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425570A EP1422023A1 (de) 2002-09-20 2002-09-20 Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien

Publications (1)

Publication Number Publication Date
EP1422023A1 true EP1422023A1 (de) 2004-05-26

Family

ID=32187304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425570A Withdrawn EP1422023A1 (de) 2002-09-20 2002-09-20 Vorrichtung zum bearbeiten der Kanten von Platten aus Marmor und ähnlichen Materialien

Country Status (1)

Country Link
EP (1) EP1422023A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544377A (en) * 1947-02-05 1951-03-06 Francis C Cooke Attachment for floor sanders or the like
FR2453004A1 (fr) * 1979-04-05 1980-10-31 Bernat Sauliere Ets Procede d'usinage d'une polisseuse et machine-outil destinee a mettre en oeuvre ce procede
US5185959A (en) * 1990-03-29 1993-02-16 Tamglass Oy Apparatus for grinding the edge of a glass sheet
EP0611191A2 (de) * 1993-02-08 1994-08-17 Thibaut S.A. Maschine zum Fräsen, Bohren, Oberflächenbearbeiten, Profilschneiden und Polieren von Gestein oder gleichartigem Material
EP0692341A1 (de) * 1994-06-29 1996-01-17 PEGORARO Ermenegildo, PEGORARO Renato, PEGORARO Sergio trading under the trading style PEGORARO DI PEGORARO E. C. S.n.c. Spannfutter insbesondere zum Bearbeiten von Marmor und dergleichen
EP1000702A2 (de) * 1998-11-09 2000-05-17 Romeo Toniolo Automatische Vorrichtung zum Auswechseln von Schleifscheiben in Maschinen zum Profilschneiden und Polieren von Platten aus Marmor, Granit, Glas, Gestein, Zement und dergleichen gewonnenen Werkstücken
EP1063054A2 (de) * 1999-06-21 2000-12-27 Z. BAVELLONI S.p.A. Doppelseitige Kantenschleifmaschine für glas- oder steinartigiges Flachmaterial und desgleichen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544377A (en) * 1947-02-05 1951-03-06 Francis C Cooke Attachment for floor sanders or the like
FR2453004A1 (fr) * 1979-04-05 1980-10-31 Bernat Sauliere Ets Procede d'usinage d'une polisseuse et machine-outil destinee a mettre en oeuvre ce procede
US5185959A (en) * 1990-03-29 1993-02-16 Tamglass Oy Apparatus for grinding the edge of a glass sheet
EP0611191A2 (de) * 1993-02-08 1994-08-17 Thibaut S.A. Maschine zum Fräsen, Bohren, Oberflächenbearbeiten, Profilschneiden und Polieren von Gestein oder gleichartigem Material
EP0692341A1 (de) * 1994-06-29 1996-01-17 PEGORARO Ermenegildo, PEGORARO Renato, PEGORARO Sergio trading under the trading style PEGORARO DI PEGORARO E. C. S.n.c. Spannfutter insbesondere zum Bearbeiten von Marmor und dergleichen
EP1000702A2 (de) * 1998-11-09 2000-05-17 Romeo Toniolo Automatische Vorrichtung zum Auswechseln von Schleifscheiben in Maschinen zum Profilschneiden und Polieren von Platten aus Marmor, Granit, Glas, Gestein, Zement und dergleichen gewonnenen Werkstücken
EP1063054A2 (de) * 1999-06-21 2000-12-27 Z. BAVELLONI S.p.A. Doppelseitige Kantenschleifmaschine für glas- oder steinartigiges Flachmaterial und desgleichen

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