EP1708850B1 - Grinding apparatus for treatment of a surface - Google Patents

Grinding apparatus for treatment of a surface Download PDF

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Publication number
EP1708850B1
EP1708850B1 EP04801175A EP04801175A EP1708850B1 EP 1708850 B1 EP1708850 B1 EP 1708850B1 EP 04801175 A EP04801175 A EP 04801175A EP 04801175 A EP04801175 A EP 04801175A EP 1708850 B1 EP1708850 B1 EP 1708850B1
Authority
EP
European Patent Office
Prior art keywords
grinding
heads
item
elements
support arrangement
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.)
Active
Application number
EP04801175A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1708850A1 (en
Inventor
Poul Erik Jespersen
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.)
Flex Trim AS
Original Assignee
Flex Trim AS
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 Flex Trim AS filed Critical Flex Trim AS
Priority to PL04801175T priority Critical patent/PL1708850T3/pl
Publication of EP1708850A1 publication Critical patent/EP1708850A1/en
Application granted granted Critical
Publication of EP1708850B1 publication Critical patent/EP1708850B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • 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
    • B24B7/28—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 wood

Definitions

  • the present invention concerns a grinding apparatus for processing a workpiece, including a support arrangement for a number of grinding heads that each includes a grinding element and a grinding motor driving an associated grinding element.
  • grinding apparatuses with a number of rollers, either with surrounding sandpaper or with a number of grinding elements that are disposed in the longitudinal direction of the roller.
  • the grinding apparatus is designed either with rollers typically rotating opposite each other, or rollers set at different angles in relation to the surface.
  • the grinding apparatus will not be worn evenly along the roller, in particular if items with different dimensions are to be ground.
  • the sandpaper will be worn most at the centre part of the roller.
  • EP 0 471 641 are used a number of grinding arrangements where each grinding arrangement consists of a number of rotating rollers rotating about a vertical shaft. In order to ensure grinding of the entire item, these grinding arrangements are arranged with overlap, causing uneven grinding, since there are areas of the item which are ground more than once.
  • This construction of a surface treatment apparatus entails non-uniform surface treatment, since the grinding areas of the two rows of grinding brushes overlap each other, whereby only one grinding of the surface of the item occurs.
  • the apparatus will not ensure an efficient grinding/deburring of edges and roundings of an item, as e.g. a stationary grinding drum may only grind the surface and forward facing edges/roundings, and a bar with overlapping grinding area of the grinding brushes only ensures a grinding of large parts of the surface once.
  • WO00/62975 discloses a grinding apparatus of the type mentioned in the preamble of the independent claim.
  • the apparatus is intended for cross-grinding and deburring a workpiece.
  • the apparatus comprises a support in the form of a rotatable disc for the grinding heads which is then imparted a circular movement for the grinding operation. The circular movement will not give a satisfying cross-grinding.
  • US 1 666 347 discloses an apparatus for polishing of plane glass surfaces and which comprises conveyor means for moving the polishing heads in an annular course having parts of the annular course extending perpendicular to an underlying conveyor for the workpieces to be polished.
  • This apparatus is not suited for cross-grinding and deburring items which include edges, roundings and burrs.
  • the support arrangement includes an endless conveying means for the grinding heads, the conveyor means being moved in an annular course with at least one long side perpendicular to an underlying conveyor, by at least one moving motor for establishing an epicyclic movement of the grinding elements across the work piece during operation.
  • the grinding apparatus In order to grind an item in one run through the grinding apparatus, it is designed with a number of grinding elements driven by the grinding motors and which constitute a number of grinding heads.
  • These grinding heads are connected with a support arrangement that holds the grinding heads at a desired position in relation to the surface of the item.
  • these grinding elements are circular grinding wheels connected to the grinding motors so that they are disposed in the horizontal plane and preferably in parallel with the surface of the workpiece to be ground.
  • the support arrangement includes a conveying means for the grinding heads, the conveying means being driven by the moving motors.
  • the conveying means is an endless course providing that the grinding heads are moved in an annular path around from one side to the opposite side and back again to the first side, so that the item is surface treated by two rows of grinding heads in one run through the apparatus.
  • the grinding elements are connected to the grinding motors with a fixed shaft, whereby items with uniform thickness may be ground/sanded on the top side face, as the sandpaper on all grinding elements is parallel with the surface.
  • the grinding elements are connected to the grinding motors with a movable shaft, e.g. a universal shaft or a shaft with a ball joint/bowl joint, whereby workpieces/items with non-uniform thickness may be ground on the top side face, since the sandpaper may now follow the contour of the surface of the item.
  • a movable shaft e.g. a universal shaft or a shaft with a ball joint/bowl joint
  • each grinding head includes a grinding element with associated grinding motor, whereby it is possible to have different direction of rotation for each single grinding element.
  • the different directions of rotation of subsequent grinding elements cause that the grinding apparatus advantageously may be used in deburring and grinding edges and roundings.
  • the lateral movement of the grinding heads furthermore entails that an epicyclic movement is effected across the workpiece, providing a more efficient grinding of the edges and roundings of the item.
  • the lateral movement of the grinding heads is to be adjusted to the speed with which the item is moved through the grinding apparatus, so that the grinding heads are moved at least so fast that the item is provided at least two grinding actions, and that there are no areas on the item which are not ground.
  • the conveying means is constituted by a number of drive chains or belts which are adapted for engaging a drive wheel driven by the moving motors.
  • four of these drive wheels are disposed rectangularly in the support frame, so that grinding heads connected to the conveying means are moved transversely of the item at first, and then back transversely of the item.
  • the drive wheel will be sprocket wheels engaging the drive chain and thereby driving the conveying means with grinding heads.
  • the drive wheels will either be smooth drive wheels which by means of the resisting force between V-belt and drive wheel will drive the conveying means with grinding heads around, or be a toothed drive wheel that engage a toothed side of the V-belt.
  • the conveying means may be wires or wide bands or similar where the drive wheel is a narrow drive wheel or a roller, respectively.
  • the drive wheels may be envisaged set up rectangularly in the support frame, as for example:
  • some of these drive wheels may be idlers which are only provided for guiding the conveying means.
  • the conveying means is a wide toothed belt running on two large sprocket wheels disposed with one sprocket wheel at each side of the grinding apparatus.
  • the grinding heads are disposed on the toothed belt.
  • a grinding apparatus Since a grinding apparatus is to be used on items with different thickness or for items with varying thickness, it includes an apparatus frame in which the support arrangement is adjustable in height, arranged by means of a number of displacing force providers.
  • the support frame may be disposed at a set level in the apparatus frame, whereby the grinding elements may be disposed so that they grind a precise thickness of the item.
  • the displacing force providers may be cylinders, rack and pinion arrangements, mechanical rocker arrangements, rotational arrangements or similar, which may be driven hydraulically, pneumatically or electrically.
  • the support frame can be adjusted in height makes it easy to bring the support frame up at a level which is readily accessible for replacing the grinding elements.
  • the grinding elements may be constituted by:
  • grinding elements may be readily replaced so that it is not required with long productions interruptions when grinding elements are to be changed.
  • the grinding heads may have grinding elements with different members, as e.g. sandpaper, grinding brushes, wire brushes, polishing cloths or brushes.
  • a grinding apparatus may find application in the wood industry, but may also find application with other industries where there are surfaces to be ground, e.g. in the automobile industry where sheet parts for vehicles are to be ground.
  • a grinding apparatus 1 that includes a number of grinding heads 6 which are constituted by a grinding motor 3 and grinding element 2.
  • Each grinding head 6 is suspended in the support frame 4 along a conveying means 9 with a sheet part 14.
  • Conveying means 9 is adapted for engaging drive wheels 11 that are driven by moving motors 5.
  • the grinding apparatus 1 there are two drive wheels 11 and two idlers 10 disposed in a rectangle so that the grinding heads 6 are moved perpendicularly and transversely of the feeding direction A of a workpiece or item (not shown).
  • Drive wheels 11 are disposed at opposite corners of the support frame 4.
  • the conveying means 9 is shown as two chains engaging an upper and a lower set of drive wheels 11a, 11b/idlers 10a, 10b, respectively, which are shown as sprocket wheels.
  • the apparatus frame 7 is provided with a wire/a belt 13 that prevents the grinding heads 6 from lateral deflections.
  • the support frame 4 is connected with the apparatus frame 7 via drive wheels 11/idlers 10 and frame part 15, and is adjustable in height by means of cylinder 12.
  • Fig. 5 shows a grinding head 6 including a grinding element 2 which is drivingly connected to a grinding motor 3 and suspended in a plate element 21 which constitutes the connection between the grinding head 6 and the support frame (not shown).
  • Fig. 6 shows an alternative support frame 4 on which a number of grinding heads 6 are arranged on a continuous conveying means 9, shown here as a broad toothed belt.
  • the continuous conveying means 9 is drivingly connected with a moving motor 5 so that the grinding heads 6 may be moved around on the support frame 4, simultaneously with the grinding elements 2 being rotated by means of the grinding motors 3, whereby an epicyclic movement of the individual grinding elements 2 is established.
  • Fig. 7 shows a set-up of two grinding apparatuses 22, 23 in apparatus frame 7, where a first grinding apparatus 22 is arranged so that the grinding elements 2 are in contact with a surface of an item 20 which is moved across a roller table 24.
  • a second grinding apparatus 23 is so arrange in the apparatus frame that the grinding elements 2 are in contact with an underside of the item 20 while it is moved from roller table 24 to roller table 25.
  • Both grinding apparatuses 22, 23 are arranged adjustable in height in the apparatus frame 7 by means of cylinders 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Disintegrating Or Milling (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP04801175A 2003-12-10 2004-12-09 Grinding apparatus for treatment of a surface Active EP1708850B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04801175T PL1708850T3 (pl) 2003-12-10 2004-12-09 Urządzenie szlifierskie do obróbki powierzchni

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200301826A DK200301826A (da) 2003-12-10 2003-12-10 Slibeapparat til behandling af en flade
PCT/DK2004/000851 WO2005056234A1 (en) 2003-12-10 2004-12-09 Grinding apparatus for treatment of a surface

Publications (2)

Publication Number Publication Date
EP1708850A1 EP1708850A1 (en) 2006-10-11
EP1708850B1 true EP1708850B1 (en) 2009-03-25

Family

ID=34673549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04801175A Active EP1708850B1 (en) 2003-12-10 2004-12-09 Grinding apparatus for treatment of a surface

Country Status (12)

Country Link
US (1) US20070099546A1 (pt)
EP (1) EP1708850B1 (pt)
AT (1) ATE426485T1 (pt)
BR (1) BRPI0417483A (pt)
CA (1) CA2548245A1 (pt)
DE (1) DE602004020267D1 (pt)
DK (2) DK200301826A (pt)
ES (1) ES2326892T3 (pt)
NO (1) NO327527B1 (pt)
PL (1) PL1708850T3 (pt)
RU (1) RU2360780C2 (pt)
WO (1) WO2005056234A1 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031656A1 (de) 2007-07-06 2009-01-08 Heesemann, Jürgen, Dipl.-Ing. Schleifmaschine
DK178006B1 (da) * 2007-12-04 2015-03-02 Flex Trim As Slibeværktøj samt apparat til slibning af en overflade på pladeformede emner
DK200701731A (da) * 2007-12-04 2009-06-05 Flex Trim As Apparat til dobbeltsidet slibning
IT1396807B1 (it) * 2009-11-25 2012-12-14 Toncelli Macchina di levigatura o lucidatura di lastre di materiale lapideo, quale pietra naturale e agglomerata, ceramico e vetro.
JP5797145B2 (ja) * 2012-03-29 2015-10-21 三菱重工業株式会社 研磨装置及びその方法
US9950404B1 (en) 2012-03-29 2018-04-24 Alta Devices, Inc. High throughput polishing system for workpieces
ITBO20120364A1 (it) * 2012-07-04 2014-01-05 E M C S R L Macchina per la finitura di pezzi semilavorati.
US9162339B2 (en) * 2013-09-24 2015-10-20 Stmicroelectronics, Inc. Adaptive uniform polishing system
WO2015144274A1 (de) * 2014-03-25 2015-10-01 Kuendig Ag Vorrichtung und verfahren für den planetenartigen umlauf von rotierenden bürst-, schleif- und polierwerkzeugen
EP3172013B1 (en) * 2014-07-24 2018-03-28 Luca Toncelli Method for smoothing and/or polishing slabs of stone or stone-like material
EP3208596A1 (en) * 2016-02-22 2017-08-23 Cockerill Maintenance & Ingenierie S.A. Device for detection of defects in strips
RU2018114822A (ru) * 2015-10-14 2019-11-14 Кокрий Ментенанс Эт Энженьери С.А. Устройство для обнаружения дефектов в полосах
IT201700035961A1 (it) * 2017-03-31 2018-10-01 Surfaces Tech Abrasives S P A Impianto per trattare delle lastre
EP3508305A1 (en) * 2018-01-09 2019-07-10 SRL Volpato Triangular-system belt sander with brush and angle gear
CN109531334B (zh) * 2019-01-18 2024-09-03 佛山市鑫飞达机械有限公司 一种磨边机
CN115070547A (zh) * 2022-07-29 2022-09-20 惠州市盈泰欣精密金属科技有限公司 压铸件毛刺打磨装置
DE202023102584U1 (de) 2023-05-12 2024-08-13 Mb Maschinenbau Gmbh Schleifanlage für ein flächig abzuschleifendes Werkstück
CN117161862B (zh) * 2023-11-02 2023-12-29 南通鹏能实业有限公司 一种基于金属长条制品加工的磨削装置

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US1666347A (en) * 1926-09-03 1928-04-17 Edward Ford Plate Glass Compan Continuous glass-polishing means
GB288196A (en) * 1927-04-04 1928-12-20 Eugene Rowart A process and apparatus for grinding, smoothing, and polishing plates of glass, marble or other similar materials
US1864823A (en) * 1929-09-10 1932-06-28 Heuze Charles Grinding, smoothing, and polishing apparatus
US2901868A (en) * 1956-10-01 1959-09-01 James H Price Brick cleaning machine
US2985989A (en) * 1958-07-15 1961-05-30 Lloyd H Knost Slab surfacing machine
US2948087A (en) * 1958-11-03 1960-08-09 Reproduction Res Lab Inc Plate graining apparatus
DE1216151B (de) * 1962-09-05 1966-05-05 Boettcher & Gessner Dickenschleifmaschine fuer plattenfoermige Werkstuecke
AT244795B (de) * 1964-02-14 1966-01-25 Zuckermann Komm Ges Wien Masch Maschine zum Schleifen von hölzernen Formteilen
US4078905A (en) * 1976-12-03 1978-03-14 Mitsubishi Jukogyo Kabushiki Kaisha Edge-rounding method and apparatus therefor
US4421624A (en) * 1980-03-25 1983-12-20 Hitachi Shipbuilding & Engineering Co., Ltd. Apparatus for continuously processing a band-shape material
US6113472A (en) * 1997-02-28 2000-09-05 Rosa; Valerio Method and an apparatus for polishing a roller and for removing the chromium plating thereof
US6152809A (en) * 1998-09-03 2000-11-28 Yenawine; Peter W. Method and apparatus for cold-end processing full-lead crystal
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Also Published As

Publication number Publication date
ATE426485T1 (de) 2009-04-15
DE602004020267D1 (de) 2009-05-07
PL1708850T3 (pl) 2009-10-30
ES2326892T3 (es) 2009-10-21
CA2548245A1 (en) 2005-06-23
DK200301826A (da) 2005-06-11
DK1708850T3 (da) 2009-07-27
RU2006124354A (ru) 2008-01-20
BRPI0417483A (pt) 2007-05-08
US20070099546A1 (en) 2007-05-03
NO327527B1 (no) 2009-08-03
NO20063094L (no) 2006-07-28
RU2360780C2 (ru) 2009-07-10
EP1708850A1 (en) 2006-10-11
WO2005056234A1 (en) 2005-06-23

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