EP1506841B1 - Disque abrasif pour machine à meuler - Google Patents

Disque abrasif pour machine à meuler Download PDF

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Publication number
EP1506841B1
EP1506841B1 EP03026759A EP03026759A EP1506841B1 EP 1506841 B1 EP1506841 B1 EP 1506841B1 EP 03026759 A EP03026759 A EP 03026759A EP 03026759 A EP03026759 A EP 03026759A EP 1506841 B1 EP1506841 B1 EP 1506841B1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding machine
openings
supporting plate
dust
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.)
Expired - Lifetime
Application number
EP03026759A
Other languages
German (de)
English (en)
Other versions
EP1506841A1 (fr
Inventor
Uli Falk
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.)
UFI Schleiftechnik GmbH and Co KG
Original Assignee
UFI Schleiftechnik GmbH and Co KG
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 UFI Schleiftechnik GmbH and Co KG filed Critical UFI Schleiftechnik GmbH and Co KG
Priority to EP06024083A priority Critical patent/EP1775071B1/fr
Publication of EP1506841A1 publication Critical patent/EP1506841A1/fr
Application granted granted Critical
Publication of EP1506841B1 publication Critical patent/EP1506841B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/12—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with apertures for inspecting the surface to be abraded
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental

Definitions

  • the present invention relates to a grinding disc for grinding machines according to the preamble of claim 1, as disclosed in EP-A-1 074 347.
  • a known sanding pad 100 is shown for rotational drive on an output shaft 202 of a hand grinder 200.
  • DE 201 05 199 U1 discloses a grinding tool for preferably dry machining of concrete or stone materials with grinding machines with a suction device.
  • the plate-like grinding tool in this case has a support body with a plurality of passage openings and with a plurality of abrasive segments.
  • passage openings are provided for the grinding dust, which are very large, so that the grinding dust can be sucked without large residues.
  • the edge regions of the passage openings have edge regions which are sharp-edged but not ground or chamfered in any way, so that no aerodynamically favorable design of the abrasive suction openings is created.
  • EP 1 074 347 A2 describes a grinding wheel for use in a grinding apparatus with a dust removing drive, wherein a number of dust discharge holes are arranged in a main body which receives the shaft of an electric motor for connection to the grinding wheel.
  • the dust discharge holes are arranged at intervals in the main body to drive the discharge of the dust generated during the grinding operation by the in cooperation with the dust discharge holes.
  • the grinding wheel then further comprises a number of grinding pads fixedly disposed at predetermined intervals on the lower surface of a peripheral portion of the main body.
  • the driving means comprises a plurality of driving blades inclined to the rotational direction of the main body and having upper and lower surfaces, respectively, arranged to form interfaces of the dust discharge holes therebetween and inclined upward from a horizontal plane to generate the air driving force for discharging dust when the electric motor driven main body rotates.
  • suction housing is provided with an exhaust pipe, from which a suction hose extends to the respective suction device.
  • a laterally projecting handle is provided on the machine housing.
  • the handle is arranged at the same time serving as suction housing protective housing for drive members of the sanding pad, hollow and connected to the cavity of the protective housing.
  • the handle forms a discharge tube for the grinding dust, at the free end of the suction hose is fixed, which extends away from the handle of the hand grinder.
  • a grinding tool of the type which has a flexible replaceable disc, the working surface is covered with a grinding-adhesive mixture and the other side is supported on a plate with a hub for application is provided on the end of a high speed rotating shaft.
  • the document EP 0 781 629 A1 discloses an adapter which can be adapted directly or indirectly to a machine or a manually operable abrasive holder, and to an adapter suitable for work-fair application to a machine grinding plate or to a grinding plate or to an actuatable abrasive holder with or without suction.
  • At least the abrasive article has a perforation that is approximately evenly distributed over the entire surface of the abrasive article, or at least partially disposed, and that at least the abrasive article penetrating layer penetrates, wherein the distance between the individual, the perforations forming openings to each other and to the suction of the grinding plate or the grinding plate is chosen so that according to the document EP 0 781 629 A1 a nearly stauloser transport of the grinding dust should be effected.
  • From DE 44 00 550 A1 discloses a sanding pad for a machine equipped with dust extraction machine is known in which the Absaug tellbrüche in the disk body endend have mouth areas whose openings are widened, so that even with eccentrically placed sanding plates a good flow of dust is guaranteed.
  • a sanding pad for a dust extractor equipped with grinding machine disclosed in DE 89 02 423 U1 in which the disk body for Schleifstaubabsaugung with eight distributed on an inner circular line around the center, extending transversely to the disk body level openings and eight distributed on an outer circle around the center in the free surface of the disk body molded recesses, which are connected via approximately radially extending channels with the periphery of the disk body and with the openings, and to which a disc of abrasive cloth grinding material is attachable, the congruent to the openings on one of the circular lines holes has, wherein each of the arranged distributed on the inner circular line openings opens out at the bottom of a second recess extending from the inner circular line to a middle third circle beyond. This should be used discs of abrasive cloth any hole pattern.
  • the present invention has the object, a sanding plate of the type mentioned so that the air flow or flow with the grinding dust unbroken in aerodynamically formed openings or openings of the Support plate passes, so that the grinding dust better fed to the openings or openings, obtained an increased suction force and clogging of the grinding wheel is removed with abraded sanding dust.
  • At least one channel guide for the air with the sanding dust is provided on the underside of the support plate facing the sanding sheet.
  • the invention relates to a grinding machine, in particular a hand grinder, comprising at least one sanding pad of the type set forth above.
  • FIGS. 1 to 6 The same or similar embodiments, elements or features are provided in FIGS. 1 to 6 with identical reference numerals.
  • FIGS. 2 to 6 show a sanding pad 100 which can be driven eccentrically by means of a hand grinder 200, which is designed in particular as an angle grinder.
  • a hand grinding machine 200 has a drive motor 204 with a preferably right-angled output shaft 202, by means of which the sanding pad 100 is driven in the way of the rotational drive (see Fig. 1).
  • a protective housing for the drive members of the sanding pad 100 can be fastened; This protective housing also serves as a suction housing for the grinding dust 300 resulting from grinding. Furthermore, a handle 208 is attached to the housing of the hand grinder 200, by means of which the hand grinder 200 can be held during the grinding process (see FIG.
  • abrasive sheet 80 is held by means of a hook and loop fastener 70 to a cushion or pad 60, which on the side facing away from the hand grinder 200 surface 16 of Support plate 10 is fixed (see Fig. 1).
  • the support plate 10 facing away from the hand grinder 200 bottom 16, the support plate 10 a plurality of (in the present embodiment: eight) air ducts 28 for the supply of the sucked sanding dust 300 to the openings 20 through which then the Sanding dust 300 is sucked off.
  • channel guides 28 are essential for the air with the sanding dust 300 on the underside 16 of the support plate 10, because in this way the air flow or air flow passes unbroken and substantially unhindered in the openings 20th
  • the apertures 20 are formed approximately oval and extend from the center 12 of the support plate 10 radially to the peripheral edge 14 of the support plate 10 (see Fig. 3 to 6), wherein the openings 20 extend with its longitudinal center line 22 in approximately a circular arc (see FIGS. 5 and 6).
  • each opening 20 widens in the direction of the center 12 of the support plate 10 away to the periphery 14 of the support plate 10 out, d. H. the distance between the first longitudinal side edge 24 of the opening 20 and the second longitudinal side edge 26 of the opening 20 is in the center 12 of the support plate 10 facing area smaller than in the peripheral edge 14 of the support plate 10 facing area.
  • an oblique bevel of the longitudinal side edges 24, 26 of each opening 20 is given by an oblique bevel of the longitudinal side edges 24, 26 of each opening 20. While the first longitudinal side edge 24 of the opening 20, which is barely detected by this air flow or air flow due to the direction of the air flow or air flow of the grinding dust 300, is almost vertical, ie. H. only very slightly ground or chamfered, the second long side edge 26 of the opening 20 strongly detected by the air flow or air flow of the grinding dust 300 is very sharpened or chamfered in order to provide the air flow or air flow of the grinding dust 300 as little resistance as possible, thus the air flow or air flow with the grinding dust 300 passes unbroken into the aerodynamically shaped openings or openings 20 of the support plate 10.
  • the openings 20 can be large or small. In the case that only one aperture 20 (or, for example, an odd number At openings 20) is provided, the support plate 10 is to balance by attaching more masses. Essential to the invention is in any case the above-described aerodynamic design of the fürbrechüngen 20th
  • stiffening webs 50 are provided, by means of which the pressure loads of the support plate 10 are collected. These eight stiffening webs 50 each extend approximately halfway into the area between each two openings or openings 20.
  • FIGS. 3 and 4 show the upper side 18 of the support plate 10 facing the hand grinder 200
  • FIGS. 5 and 6 show the underside 16 of the support plate 10 facing away from the hand grinder 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (5)

  1. Disque abrasif (100) pour l'entraînement rotatif sur un arbre de sortie (202) d'une meuleuse (200, en particulier d'une meuleuse à main, qui présente au moins une plaque d'appui (10) avec au moins une découpure ou ouverture (20) par laquelle la poussière de meulage (300) qui se forme lors du meulage peut être aspirée au moyen d'au moins une cloche d'aspiration (206) placée dans ou sur la meuleuse (300), la découpure ou l'ouverture (20) présentant, pour une configuration aérodynamique de celle-ci, une conformation ovale avec deux bords latéraux longitudinaux (24, 26) ainsi qu'avec une ligne centrale longitudinale (22) qui s'étend à peu près en forme d'arc de cercle et qui s'élargit en direction du bord périphérique (14) de la plaque d'appui (10), seulement l'un (26) des deux bords latéraux longitudinaux (24, 26) de la découpure ou de l'ouverture (20) étant affûté et/ou biseauté,
    caractérisé en ce
    qu'un côté inférieur (16) de la plaque d'appui (10) qui est opposé à la meuleuse (200) présente plusieurs conduits de conduction de l'air (28) vers les découpures (20) et
    qu'il est prévu, sur le côté inférieur (16) de la plaque d'appui (10) qui et opposé à la meuleuse (200),
    au moins une section de bord en relief (30) et/ou
    au moins un moulage (40) entre au moins deux découpures ou ouvertures (20),
    sur lesquels au moins un coussin ou rembourrage (60) peut s'appuyer et/ou être fixé pour la fixation amovible d'au moins une feuille abrasive (80).
  2. Disque abrasif selon la revendication 1, caractérisé en ce que la découpure ou l'ouverture (20) s'étend du centre (12) de la plaque d'appui (10) radialement vers le bord périphérique (14) de la plaque d'appui (10).
  3. Disque abrasif selon la revendication 1 ou 2, caractérisé en ce qu'au moins une moulure de renforcement (50) qui s'étend radialement est prévue sur ou dans la plaque d'appui (10).
  4. Disque abrasif selon la revendication 3, caractérisé en ce que la moulure de renforcement (50)
    est prévue sur la surface (18) de la plaque d'appui (10) qui est tournée vers la meuleuse (200) et/ou
    se trouve au moins partiellement dans la zone entre au moins deux découpures ou ouvertures (20).
  5. Meuleuse (200), en particulier meuleuse à main, caractérisée par au moins un disque abrasif (100) selon au moins l'une des revendications 1 à 4.
EP03026759A 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler Expired - Lifetime EP1506841B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06024083A EP1775071B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20312499U DE20312499U1 (de) 2003-08-11 2003-08-11 Schleifteller für Schleifmaschine
DE20312499U 2003-08-11

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06024083A Division EP1775071B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler

Publications (2)

Publication Number Publication Date
EP1506841A1 EP1506841A1 (fr) 2005-02-16
EP1506841B1 true EP1506841B1 (fr) 2007-02-21

Family

ID=33521681

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03026759A Expired - Lifetime EP1506841B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler
EP06024083A Expired - Lifetime EP1775071B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06024083A Expired - Lifetime EP1775071B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler

Country Status (6)

Country Link
US (1) US7458884B2 (fr)
EP (2) EP1506841B1 (fr)
AT (2) ATE354455T1 (fr)
CA (1) CA2522113A1 (fr)
DE (3) DE20312499U1 (fr)
WO (1) WO2005016600A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006071875A1 (fr) * 2004-12-29 2006-07-06 Millennium Pharmaceuticals, Inc. Composes utilises comme antagonistes des recepteurs de la chemokine
DE102006013221A1 (de) * 2006-03-22 2007-09-27 Gämmerler AG Verfahren zum Schneiden von Papierprodukten
WO2008076366A2 (fr) * 2006-12-15 2008-06-26 Tbw Industries, Inc. Configuration abrasive pour l'élimination dynamique fluidique du matériau abrasé et similaires
DE102007014766A1 (de) * 2007-03-28 2008-10-02 Robert Bosch Gmbh Exzentertellerschleifer
US7717770B1 (en) 2008-07-08 2010-05-18 Clayton R Peterson Expansion joint grinder
DE102008055797A1 (de) * 2008-11-04 2010-05-06 Kai Roscher Schleifmaschine
EP2305742B1 (fr) 2009-10-01 2017-02-22 Symrise AG Particule coeur/enveloppe sphérique
US8382559B2 (en) * 2010-04-09 2013-02-26 X'pole Precision Tools Inc. Negative pressure dust collection structure for power tools
USD658005S1 (en) * 2010-07-09 2012-04-24 Grace Manufacturing, Inc. Culinary cutting blade
US10099343B2 (en) * 2010-11-15 2018-10-16 3M Innovative Properties Company Abrasive disc with universal hole pattern
DK177274B1 (da) * 2011-05-27 2012-09-10 Flex Trim As Slibehoved
ITMI20111434A1 (it) * 2011-07-29 2013-01-30 Guido Valentini Platorello a doppia camera di aspirazione
WO2013032115A1 (fr) * 2011-08-31 2013-03-07 Ehwa Diamond Industrial Co., Ltd. Outil à meuler
EP2758210B1 (fr) * 2011-09-20 2016-05-18 Robert Bosch GmbH Corps de retenue pour produit abrasif flexible, système de meulage et meuleuse
DE202012013026U1 (de) * 2012-01-31 2014-07-15 Robert Bosch Gmbh Baueinheit
DE102013213272A1 (de) * 2013-07-05 2015-01-08 Flex-Elektrowerkzeuge Gmbh Werkzeugaufnahme und handgehaltene Schleifmaschine
USD748963S1 (en) * 2013-07-05 2016-02-09 Flex-Elektrowerkzeuge Gmbh Grinding machine
SE540285C2 (en) * 2015-01-20 2018-05-22 Htc Sweden Ab System comprising a carrier disk and a floor grinding machine
TWI595965B (zh) * 2016-12-30 2017-08-21 Super Master Developing Co Ltd Abrasive pieces
USD906778S1 (en) * 2019-05-02 2021-01-05 Flex-Elektrowerkzeuge Gmbh Sanding and polishing machine
DE102019211349A1 (de) * 2019-07-30 2021-02-04 Robert Bosch Gmbh Schleifwerkzeug
KR102182704B1 (ko) * 2019-12-31 2020-11-25 주식회사 르본인터내셔널 정밀하고 신속한 래핑이 가능한 래핑방법

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Also Published As

Publication number Publication date
ATE354455T1 (de) 2007-03-15
DE50311561D1 (de) 2009-07-09
EP1775071A1 (fr) 2007-04-18
US20060189268A1 (en) 2006-08-24
EP1775071B1 (fr) 2009-05-27
US7458884B2 (en) 2008-12-02
CA2522113A1 (fr) 2005-02-24
ATE432148T1 (de) 2009-06-15
EP1506841A1 (fr) 2005-02-16
DE50306585D1 (de) 2007-04-05
DE20312499U1 (de) 2004-12-16
WO2005016600A1 (fr) 2005-02-24

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