EP1772232A1 - Groupe de meulage - Google Patents

Groupe de meulage Download PDF

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Publication number
EP1772232A1
EP1772232A1 EP06020978A EP06020978A EP1772232A1 EP 1772232 A1 EP1772232 A1 EP 1772232A1 EP 06020978 A EP06020978 A EP 06020978A EP 06020978 A EP06020978 A EP 06020978A EP 1772232 A1 EP1772232 A1 EP 1772232A1
Authority
EP
European Patent Office
Prior art keywords
abrading
crossbar
driving means
driving
along
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Withdrawn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
EP06020978A
Other languages
German (de)
English (en)
Inventor
Adriano Ferrari
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.)
SCM Group SpA
Original Assignee
SCM Group 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.)
Filing date
Publication date
Application filed by SCM Group SpA filed Critical SCM Group SpA
Publication of EP1772232A1 publication Critical patent/EP1772232A1/fr
Withdrawn legal-status Critical Current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
    • B24B27/00—Other grinding machines or devices
    • 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
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
    • 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
    • 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
    • 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
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like
    • 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
    • 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
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces

Definitions

  • the invention relates to an abrading group that is associable with a machine tool, for example a sanding machine arranged for processing wood or comparable materials and a driving method for driving the aforesaid abrading group.
  • the invention relates to an abrading group provided with abrading tools arranged for finishing and sanding corner zones of a piece to be processed, for example a panel.
  • Abrading groups comprising an endless conveying belt that is positioned transversely to and above a conveyor belt arranged for conveying a piece to be processed.
  • the conveying belt moves along a loop path that is substantially transverse to an advance direction of the conveyor belt and comprises a plurality of frontal abrading tools, in particular abrading brushes.
  • the abrading brushes are positioned next to one another and are arranged in a row like the keys of a piano, in a substantially parallel manner with respect to the advance direction of the conveyor belt.
  • Each abrading brush is further provided with strips of abrasive paper arranged for interacting with a surface to be processed.
  • the slide is driven by a connecting rod-crank unit and is arranged for move forwards and backwards transversely to the advance direction of the conveyor belt and is designed for supporting a plurality of abrading brushes of the aforesaid type.
  • abrading groups comprising peripherally abrading tools, in particular one or more rotating cylinders, for example two, having opposite rotating directions, which are positioned transversely and above the conveyor belt.
  • the rotating cylinders comprise a side surface from which a plurality of abrading elements project radially.
  • the abrading elements are positioned substantially transversely with respect to the advance direction of the conveyor belt, in such a way as to come into contact, in use, with the surface to be processed.
  • a drawback that besets the aforesaid known abrading groups is that they do not allow uniform finishing of the surface to be sanded.
  • the abrading groups provided with abrading brushes do not allow suitable sanding of corner zones that are substantially transverse with respect to the advance direction of the piece
  • the abrading groups comprising rotating cylinders do not allow suitable abrading of corner zones that are substantially parallel to the advance direction of the piece.
  • the aforesaid abrading groups are used together in known sanding machines, the abrading groups being positioned downstream of one another, in order to ensure even surface finishing.
  • Abrading groups are also known comprising a plurality of frontal abrading tools, in particular abrading discs, each fitted on a respective rotating spindle.
  • Each abrading disc comprises a lower surface from which a plurality of supports projects, positioned radially, each arranged for supporting abrading blades.
  • the rotating abrading discs are supported by a movable frame, which is mounted above and transversely to the conveyor belt.
  • the movable frame driven by pneumatic actuators, is arranged for oscillating along a transverse guide, creating a reciprocating movement.
  • a drawback that besets the aforesaid known abrading groups is the discontinuity of the working conditions of the abrading tools at the motion reversal points.
  • a further drawback of the aforesaid known abrading groups is the necessity of using two distinct sources of energy: electric energy for rotating the rotating discs and compressed air for moving the movable crossbar.
  • An object of the invention is to improve the abrading groups associable with sanding machines arranged for processing wood or comparable materials.
  • a further object is to obtain an abrading group that improves the surface quality of the piece to be processed.
  • a still further object is to obtain abrading groups that are simple to make and of modest cost.
  • Still another object is to provide for a driving method for driving the aforesaid abrading groups that enables the surface finishing of the piece to be processed to be improved.
  • an abrading group comprising a plurality of abrading units rotationally mounted on crossbar means extending along a transverse direction that is transverse with respect to an intended advance direction of pieces to be abraded, driving means for rotating each abrading unit around a longitudinal axis thereof, further driving means for oscillating said crossbar means along said transverse direction, characterised in that said further driving means is such as to oscillate said crossbar means also along said advance direction.
  • a method comprising driving a plurality of abrading units arranged for abrading a surface of a piece to be abraded with a motion having a component along a transverse direction that is transverse with respect to an intended advance direction of said piece to be abraded, characterised in that it comprises further driving said plurality of abrading units with a further motion having a component along said advance direction.
  • the driving means and the further driving means can both be driven by a single energy source, in particular electric energy.
  • an abrading group 1 associable with a sanding machine arranged for processing wood or comparable materials.
  • the abrading unit 1 is arranged for finishing and sanding corner zones 3 of a piece 2 to be processed ( Figures 2 and 3).
  • the abrading group 1 is provided with a plurality of abrading units 4, comprising abrading discs 5 that are frontal and arranged for rotating in a rotation direction R around a substantially vertical axis Z.
  • Each abrading disc 5 comprises a surface 6, operationally facing the piece 2, and supporting a plurality of clamps that are not shown.
  • the radially positioned clamps are designed for supporting abrading elements 7.
  • the abrading elements 7, projecting from the aforesaid clamps, comprise a strip of abrasive paper arranged for abrading the piece 2, and a plurality of supporting bristles.
  • the bristles having a height extension that is less than the strip of abrasive paper, are positioned in contact with the latter.
  • the bristles support the strip of abrasive paper increasing a flexional stiffness value of the latter, with a consequent increase in abrading capacity.
  • the bristles in use, resist the tendency of the abrasive strip to move away from the piece 2, acting as an abutment.
  • Each abrading disc 5 is removably fixed, for example through a threaded connection, to a respective spindle 8.
  • Each spindle 8, provided with bearings 9, is supported by a box element 10, extending along a direction that is substantially parallel to the axis Z.
  • the spindle 8 comprises an end 11 on which a drawn pulley 12 is fitted.
  • Each drawn pulley 12 is rotated by endless flexible driving means 13 that is controlled by first motor means 14, for example an electric motor.
  • the first motor means 14 further comprises a plurality of tensioning rollers 15 arranged for tensioning the flexible driving means 13 and for ensuring a sufficiently wide winding angle ⁇ (Figure 2), which is defined by a portion of the aforesaid flexible driving means 13 in contact with a peripheral portion of the drawn pulley 12.
  • the abrading group 1 further comprises a crossbar 16 arranged for supporting the box elements 9 and consequently the abrading discs 5.
  • the crossbar 16 which is supported at the ends thereof by a frame 17, extends above, and substantially transversely to, a conveyor belt 18 that is arranged for conveying the piece 2, extending and movable along a further substantially horizontal axis X.
  • the crossbar 16 is positioned substantially transversely with respect to an advance direction F of the aforesaid conveyor belt 18, the advance direction F being substantially parallel to the further axis X.
  • the abrading group 1 further comprises driving means 19 that is arranged for moving the crossbar 16.
  • the driving means 19 is received in a space 20 with which the frame 17 is' provided, the frame 17 being in turn supported by a base 21.
  • the driving means 19 is positioned substantially at a first end 23 and at a second end 24 of the crossbar 16.
  • the driving means 19 comprises shaft means 25 that is arranged for rotating around a first vertical axis A1.
  • the shaft means 25 is provided with a first end portion 26, a second end portion 27 and an eccentric portion 28, which is interposed between the first end portion 26 and the second end portion 27.
  • the first end portion 26 and the second end portion 27 extend around the first vertical axis Al, whilst the eccentric portion 28 extends longitudinally around a second vertical axis A2 that is substantially parallel to the first vertical axis A1.
  • the first end portion 26 is arranged for engaging with a reduction gear 29 of a motor unit 30, whilst the second end portion 27, which is provided with bearing means 31, is mounted on an annular plate 32 removably fixed to the frame 17.
  • the motor unit 30 comprises end pulleys 33 driven by further flexible driving means 34, which is endless and moved by second motor means' 35, for example an electric motor.
  • the first end 23 and the second end 24 of the crossbar 16 are fitted on the eccentric portion 28 through fixing means 36 provided with further bearing means 37.
  • the eccentric portion 28 rotates around the first vertical axis A1, which is different from, and parallel to, the second vertical axis A2.
  • the eccentric portion 28 is able to transmit a motion to the crossbar 16, which is integral with the eccentric portion 28.
  • This motion which is induced by the eccentric portion 28, comprises a component C that is substantially parallel to the advance direction F of the piece 2 and a component D that is substantially perpendicular to the advance direction F of the piece 2.
  • the abrading discs 5, in addition to rotating around the rotation axis Z, are also moved by the crossbar 16 along a trajectory that is defined by the substantially parallel component C and by the substantially perpendicular component D.
  • first motor means 14 and the second motor means 35 are both driven by a single energy source, in particular electric energy.

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)
EP06020978A 2005-10-06 2006-10-05 Groupe de meulage Withdrawn EP1772232A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000254A ITMO20050254A1 (it) 2005-10-06 2005-10-06 Gruppo abrasivo

Publications (1)

Publication Number Publication Date
EP1772232A1 true EP1772232A1 (fr) 2007-04-11

Family

ID=37491827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06020978A Withdrawn EP1772232A1 (fr) 2005-10-06 2006-10-05 Groupe de meulage

Country Status (3)

Country Link
US (1) US20070082586A1 (fr)
EP (1) EP1772232A1 (fr)
IT (1) ITMO20050254A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2377646A1 (fr) * 2010-04-19 2011-10-19 SCM Group S.p.A. Dispositif de finition des bords et/ou des surfaces extérieures des pièces
CN104191341A (zh) * 2014-08-13 2014-12-10 苏州奥林五金有限公司 新型抛光机
WO2015087294A1 (fr) * 2013-12-13 2015-06-18 Luca Toncelli Machine pour lisser et/ou polir des dalles de matériau en pierre, tel que de la pierre naturelle ou agglomérée, de la céramique et du verre
CN106514478A (zh) * 2017-01-04 2017-03-22 广东鼎科技有限公司 一种高效抛光机
CN110539212A (zh) * 2019-09-28 2019-12-06 长沙埃福思科技有限公司 一种多工件离子束抛光***及方法
IT201900024631A1 (it) * 2019-12-19 2021-06-19 Biesse Spa Macchina sbavatrice per la finitura di elementi di legno, metallo, materiale plastico o simili

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9950404B1 (en) * 2012-03-29 2018-04-24 Alta Devices, Inc. High throughput polishing system for workpieces
PT3172013T (pt) * 2014-07-24 2018-05-25 Toncelli Luca Método para alisar e/ou polir lajes de pedra ou material tipo pedra
CN107297667A (zh) * 2016-04-15 2017-10-27 中车贵阳车辆有限公司 一种管件的除锈方法及所用的管件除锈设备
CN112025555A (zh) * 2020-08-31 2020-12-04 珠海市惠装居装饰有限责任公司 一种夹紧打磨根据温度自动控制除尘婴儿家居加工装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1909902A (en) * 1926-02-01 1933-05-16 Simplex Engineering Company Glass polishing apparatus
DE2740696A1 (de) * 1977-09-09 1979-03-15 Steinbearbeitungs Maschinenfab Verfahren und vorrichtung zum schleifen oder polieren von steinflaechen
US5081794A (en) * 1990-08-17 1992-01-21 Haney Donald E Sander with orbiting platen and abrasive

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474672A (en) * 1921-11-01 1923-11-20 Heuze Charles Apparatus for grinding, smoothing, and polishing glass, plate glass, and other material substances
US1684029A (en) * 1926-12-11 1928-09-11 Hartford Empire Co Method and apparatus for polishing glass
US1955128A (en) * 1931-04-29 1934-04-17 Libbey Owens Ford Glass Co Glass grinding apparatus
US2403341A (en) * 1944-06-05 1946-07-02 Norton Co Grinding machine
US2539107A (en) * 1948-04-28 1951-01-23 Charles W Sectish Grinding machine
US2627143A (en) * 1950-07-05 1953-02-03 Thomas W Beyer Machine for grinding files
US2945330A (en) * 1957-01-17 1960-07-19 Saint Gobain Apparatus for surfacing glass
US3006116A (en) * 1959-02-17 1961-10-31 Lloyd H Knost Apparatus for honing hard surfaced materials
US4742650A (en) * 1986-11-07 1988-05-10 Conestoga Wood Specialities, Inc. Sanding machine
US4864775A (en) * 1988-05-16 1989-09-12 Timesavers, Inc. Cross-belt sanding machine with oscillating platen means
US6001003A (en) * 1998-05-11 1999-12-14 Park; Kyung Wave beveling machine
US6869349B2 (en) * 2002-10-10 2005-03-22 Slipcon Holding International Aps Abrading machine with abrading discs, which are moved in a reciprocatory movement transverse to an item

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1909902A (en) * 1926-02-01 1933-05-16 Simplex Engineering Company Glass polishing apparatus
DE2740696A1 (de) * 1977-09-09 1979-03-15 Steinbearbeitungs Maschinenfab Verfahren und vorrichtung zum schleifen oder polieren von steinflaechen
US5081794A (en) * 1990-08-17 1992-01-21 Haney Donald E Sander with orbiting platen and abrasive

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2377646A1 (fr) * 2010-04-19 2011-10-19 SCM Group S.p.A. Dispositif de finition des bords et/ou des surfaces extérieures des pièces
ITMO20100117A1 (it) * 2010-04-19 2011-10-20 Scm Group Spa Dispositivo per rifinire bordi e/o superfici esterne di pezzi da lavorare
WO2015087294A1 (fr) * 2013-12-13 2015-06-18 Luca Toncelli Machine pour lisser et/ou polir des dalles de matériau en pierre, tel que de la pierre naturelle ou agglomérée, de la céramique et du verre
US10771388B2 (en) 2013-12-13 2020-09-08 Luca Toncelli Machine for smoothing and/or polishing slabs of stone material, such as natural or agglomerated stone, ceramic and glass
CN104191341A (zh) * 2014-08-13 2014-12-10 苏州奥林五金有限公司 新型抛光机
CN106514478A (zh) * 2017-01-04 2017-03-22 广东鼎科技有限公司 一种高效抛光机
CN110539212A (zh) * 2019-09-28 2019-12-06 长沙埃福思科技有限公司 一种多工件离子束抛光***及方法
IT201900024631A1 (it) * 2019-12-19 2021-06-19 Biesse Spa Macchina sbavatrice per la finitura di elementi di legno, metallo, materiale plastico o simili
EP3838479A1 (fr) * 2019-12-19 2021-06-23 Viet Italia S.r.l. Machine d'ébavurage pour la finition d'éléments en bois, métal, matière plastique ou similaire

Also Published As

Publication number Publication date
ITMO20050254A1 (it) 2007-04-07
US20070082586A1 (en) 2007-04-12

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