EP2145733A1 - Plaquette pour surface d'usinage avec canaux d'aspiration incurvés - Google Patents

Plaquette pour surface d'usinage avec canaux d'aspiration incurvés Download PDF

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Publication number
EP2145733A1
EP2145733A1 EP09165057A EP09165057A EP2145733A1 EP 2145733 A1 EP2145733 A1 EP 2145733A1 EP 09165057 A EP09165057 A EP 09165057A EP 09165057 A EP09165057 A EP 09165057A EP 2145733 A1 EP2145733 A1 EP 2145733A1
Authority
EP
European Patent Office
Prior art keywords
pad
holes
peripheral
channels
pad according
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Withdrawn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
EP09165057A
Other languages
German (de)
English (en)
Inventor
Guido Valentini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2145733A1 publication Critical patent/EP2145733A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • the present invention relates to a pad for machining surfaces with curved aspiration channels.
  • pads consist of a body that is circular or has another shape, which is provided with a central shank for fitting to a portable tool and is traversed by axial holes for the machining dust, which is suitably aspirated by aspirating systems associated with the tool.
  • the aspirating system connected to the portable tool causes the dust to move through the through holes of the pad to the upper part of the pad on which a guard rests that conveys the removed material to an aspirating pipe.
  • the aspirating holes are usually concentrated in the outermost part of the pad and anyway inside the conveying guard, because the central part of the pad consists of a stiff support embedded in a flexible body that is stiffly commanded to rotate by the central attachment shank.
  • Pads are known with an external circumferal series of through holes with a rectilinear channel that connects the centre drilled below of the pad to the periphery drilled at a plurality of points.
  • An object of the present invention is to make a pad with internal aspirating channels that enable an aspirating equilibrium to be obtained between the central zone and the peripheral zone of the pad in consideration of the fact that below the central zone of the pad the dust accumulates.
  • this object is achieved with a pad comprising a monobloc body traversed by a plurality of peripheral through holes for aspirating dust, in which channels are formed that extend parallel to the lower surface of the pad, connecting a lower central aspiration hole of said pad with peripheral holes, characterised in that said channels intercept lower internal holes of the pad that do not pass through the monobloc that are suitable for conveying the abraded dust from the central part of the pad to the peripheral through holes through the channels.
  • a pad 1 of circular shape consists of a monobloc body 2 consisting of a drilled stiff support 10 and a drilled flexible body 11, preferably made of expanded polyurethane, in which said stiff support 10 is embedded.
  • Said pad 1 with an outside diameter equal to about 148 mm, comprises a plurality of peripheral through holes 3 distributed according to concentric circumferences, in particular ( figure 2 ):
  • Said pad 1 is further provided with curved channels 4 that connect, extending parallel to the abrasive surface of the pad, a lower central hole 33 with a diameter of 16-20 mm with the peripheral holes 3C that permit aspiration through an upper guard 9, and is placed in circular motion or rotary-orbital motion with respect to the portable tool that supports the pad by a mechanism (not shown in the figures) that is part of a portable tool and is connected to a pin or central shank 5 that is suitably shaped, fixed to the support 10.
  • the curved channels 4 intercept lower internal holes 101 having a diameter of 3-5 mm of the pad ( figure 2-5 ) that do not pass through the monobloc 2 that are arranged along concentric circumferences 101A (diameter 56-59 mm) and 101B (diameter 37-39 mm) and are suitable for conveying the abraded dust from the central part of the pad, between the lower central hole 33 and the peripheral through holes 3C to said peripheral holes 3C through the curved channels 4.
  • the present invention enables several holes 101 to be obtained in the central part without the need to drill the monobloc 2 centrally, i.e. the thickest part of the pad.
  • a thin layer of Velcro 100 covers the lower surface of the pad 1, enabling a sheet of abrasive material to adhere (not shown), that is intended to interact with the surface to be machined, said abrasive sheet normally having a number of holes that is appropriate to the number of holes of the pad.
  • the external edge of the body 2 of the pad 1 is shaped in such a way as to be able to mount thereupon the guard 9 with which the portable tool is provided in order to contain and convey to an aspirating tube the dust attracted into the interior thereof through the holes 3 and the channels 4.
  • the pad moves with a circular or rotary-orbital motion with respect to the tool to which it is linked and the dust produced by the interaction of the abrasive sheet with the surface to be machined is removed by means of an aspirating system that is not shown in the figures.
  • the dust particles move from the centre to the exterior of the pad through the curved channels 4 and reach the upper part of the pad 1 through the holes 3C.
  • the abrasive sheet with curved series of holes is mounted so as to superimpose on the curved channels 4 of the pad at least some of said curved series of holes, i.e. by superimposing on the holes 101 inside the curved channels 4 at least some of the holes of the abrasive sheet, the curvatures of said series of holes of the abrasive sheet following the same route as the curved channels 4.
  • the channels 4 and the relative internal holes 101 are the same as one another and repeated every 120°, the angular arrangement of the other holes 141 is easily obtainable.
  • peripheral holes 3 are repeated every 90°, it being necessary to emphasise the angular regularity of the peripheral through holes 3 measuring 7-9 mm that on the other hand follow one another at regular intervals of 45°. This occurs to adapt better the mounting of the external deflector, which is not shown in the figures, on the pad.
  • the pad tends to centrifuge the dust, in the interior the pad tends to retain the dust.
  • the pad according to the present invention thus captures the dust where it forms through the effect of the abrasion in a varied manner, depending on the different abrasive power generated by the rotary-orbital action of the pad.
  • the aspirating aspect and the abrading aspect are equalised, obtaining not only perfect aspiration but also avoiding a dangerous accumulation of dust on the abrasive paper, the latter being the cause of faulty machinings.
  • Said curved channels 4 are preferably the same as one another, placed at a constant angular distance around the central hole 33 of the pad, and preferably terminate at a first series of the external holes 3C that are not adjacent to the external edge of the pad.
  • the present embodiment shows three curved channels 4 and two holes 101 for each channel 4, but it is possible to provide a different number of channels 4 and holes 101 in function of the dimensions and required performance of the pad.
  • a further embodiment of the present invention provides internal rectilinear and non curved channels (4), i.e. in function of the arrangement of the holes of the sheet of abrasive paper.
  • Said soft sheet is, for example, mounted on the pad by means of a plush that is coupled with the layer of Velcro 100, and to which the abrasive paper is attached by means of a new Velcro fastening.
  • Said soft layer is ideal for abrasive paper of grade 500 and above for ultra-fine finishes and has a number and an arrangement of holes coinciding with the pad.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP09165057A 2008-07-15 2009-07-09 Plaquette pour surface d'usinage avec canaux d'aspiration incurvés Withdrawn EP2145733A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000222U ITMI20080222U1 (it) 2008-07-15 2008-07-15 "platorello per la lavorazione di superfici con canali di aspirazione curvi"

Publications (1)

Publication Number Publication Date
EP2145733A1 true EP2145733A1 (fr) 2010-01-20

Family

ID=41139302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09165057A Withdrawn EP2145733A1 (fr) 2008-07-15 2009-07-09 Plaquette pour surface d'usinage avec canaux d'aspiration incurvés

Country Status (4)

Country Link
US (1) US20100015900A1 (fr)
EP (1) EP2145733A1 (fr)
CN (1) CN101712140A (fr)
IT (1) ITMI20080222U1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002865A1 (fr) * 2013-07-02 2015-01-08 3M Innovative Properties Company Article abrasif et adaptateur pour celui-ci
PT107454A (pt) * 2014-02-06 2015-08-06 Indasa Indústria De Abrasivos S A Prato com rasgos para discos de lixagem multifuros
EP3028811A1 (fr) * 2014-12-05 2016-06-08 Guido Valentini Tampon de support pour un outil de polissage ou de sablage guidé à la main et ledit outil de polissage ou de sablage guidé avec un tel tampon
EP3072639A1 (fr) * 2011-12-31 2016-09-28 Saint-Gobain Abrasives, Inc. Article abrasif à répartition irrégulière d'ouvertures
US20200023495A1 (en) * 2017-02-13 2020-01-23 Mirka Ltd Conduit arrangements in intermediate pad, backing pad, and abrading article for extracting abrading debris
CN110788712A (zh) * 2019-11-11 2020-02-14 浙江冠鑫科技股份有限公司 一种能够收集火花的角磨机
CN112536720A (zh) * 2020-11-16 2021-03-23 湖南大学 一种磨床自适应砂轮装置的除尘冷却方法
USD915167S1 (en) * 2019-02-28 2021-04-06 Guido Valentini Circular backing pad with magnets

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015071217A (ja) * 2013-10-04 2015-04-16 スリーエム イノベイティブ プロパティズ カンパニー 研磨ディスクを支持するためのパッド
EP2859997B1 (fr) * 2013-10-08 2015-09-30 Valentini, Guido Procédé de fabrication d'un tampon de polissage et tampon de polissage
DE202013010480U1 (de) * 2013-11-21 2014-11-13 Kolthoff & Co. Schleifteller
DE102013225223A1 (de) * 2013-12-09 2015-06-11 Robert Bosch Gmbh Halterung zum Halten eines Schleifmittels, Verfahren zum Herstellen einer Halterung, Schleifsystem und Verwendung einer Halterung
USD936443S1 (en) * 2019-10-18 2021-11-23 Guido Valentini Polishing pad
CN112720160A (zh) * 2020-12-28 2021-04-30 南京顺遂姐商贸有限公司 一种塑料生产用打磨设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067057A1 (fr) * 1998-06-23 1999-12-29 Ekamant Ab Outil de rectification a main, pneumatique
WO2002072313A1 (fr) * 2001-03-12 2002-09-19 Guido Valentini Plaque de fonctionnement ayant une forme fondamentalement circulaire destinee a des outils portables
EP1514644A1 (fr) * 2003-09-11 2005-03-16 Guido Valentini Support avec déflecteur pour le traitement de surface
WO2007143400A2 (fr) * 2006-05-30 2007-12-13 3M Innovative Properties Company Article abrasif comprenant un disque abrasif fendu et un tampon de soutien

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287685A (en) * 1978-12-08 1981-09-08 Miksa Marton Pad assembly for vacuum rotary sander
JP3042593B2 (ja) * 1995-10-25 2000-05-15 日本電気株式会社 研磨パッド
US6692338B1 (en) * 1997-07-23 2004-02-17 Lsi Logic Corporation Through-pad drainage of slurry during chemical mechanical polishing
US6656019B1 (en) * 2000-06-29 2003-12-02 International Business Machines Corporation Grooved polishing pads and methods of use
US6413157B1 (en) * 2000-12-15 2002-07-02 Miksa Marton Double action orbital sander

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067057A1 (fr) * 1998-06-23 1999-12-29 Ekamant Ab Outil de rectification a main, pneumatique
WO2002072313A1 (fr) * 2001-03-12 2002-09-19 Guido Valentini Plaque de fonctionnement ayant une forme fondamentalement circulaire destinee a des outils portables
EP1514644A1 (fr) * 2003-09-11 2005-03-16 Guido Valentini Support avec déflecteur pour le traitement de surface
WO2007143400A2 (fr) * 2006-05-30 2007-12-13 3M Innovative Properties Company Article abrasif comprenant un disque abrasif fendu et un tampon de soutien

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2797714B1 (fr) 2011-12-31 2019-04-03 Saint-Gobain Abrasives, Inc. Article abrasif à répartition irrégulière d'ouvertures
US10076820B2 (en) 2011-12-31 2018-09-18 Saint-Gobain Abrasives, Inc. Abrasive article having a non-uniform distribution of openings
US11504822B2 (en) 2011-12-31 2022-11-22 Saint-Gobain Abrasives, Inc. Abrasive article having a non-uniform distribution of openings
EP3072639A1 (fr) * 2011-12-31 2016-09-28 Saint-Gobain Abrasives, Inc. Article abrasif à répartition irrégulière d'ouvertures
US20190001464A1 (en) * 2011-12-31 2019-01-03 Saint-Gobain Abrasives, Inc. Abrasive article having a non-uniform distribution of openings
US9656366B2 (en) 2011-12-31 2017-05-23 Saint-Gobain Abrasives, Inc. Abrasive article having a non-uniform distribution of openings
WO2015002865A1 (fr) * 2013-07-02 2015-01-08 3M Innovative Properties Company Article abrasif et adaptateur pour celui-ci
JP2016523728A (ja) * 2013-07-02 2016-08-12 スリーエム イノベイティブ プロパティズ カンパニー 研磨物品及びそのためのアダプタ
PT107454A (pt) * 2014-02-06 2015-08-06 Indasa Indústria De Abrasivos S A Prato com rasgos para discos de lixagem multifuros
US10576610B2 (en) 2014-12-05 2020-03-03 Guido Valentini Backing pad for a hand guided polishing or sanding tool and hand guided polishing or sanding tool with such a backing pad
EP3028811A1 (fr) * 2014-12-05 2016-06-08 Guido Valentini Tampon de support pour un outil de polissage ou de sablage guidé à la main et ledit outil de polissage ou de sablage guidé avec un tel tampon
US20200023495A1 (en) * 2017-02-13 2020-01-23 Mirka Ltd Conduit arrangements in intermediate pad, backing pad, and abrading article for extracting abrading debris
US11780056B2 (en) * 2017-02-13 2023-10-10 Mirka Ltd Conduit arrangements in intermediate pad, backing pad, and abrading article for extracting abrading debris
USD915167S1 (en) * 2019-02-28 2021-04-06 Guido Valentini Circular backing pad with magnets
CN110788712A (zh) * 2019-11-11 2020-02-14 浙江冠鑫科技股份有限公司 一种能够收集火花的角磨机
CN112536720A (zh) * 2020-11-16 2021-03-23 湖南大学 一种磨床自适应砂轮装置的除尘冷却方法

Also Published As

Publication number Publication date
CN101712140A (zh) 2010-05-26
ITMI20080222U1 (it) 2010-01-16
US20100015900A1 (en) 2010-01-21

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