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EP1775071B1 - Disque abrasif pour machine à meuler - Google Patents

Disque abrasif pour machine à meuler Download PDF

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Publication number
EP1775071B1
EP1775071B1 EP06024083A EP06024083A EP1775071B1 EP 1775071 B1 EP1775071 B1 EP 1775071B1 EP 06024083 A EP06024083 A EP 06024083A EP 06024083 A EP06024083 A EP 06024083A EP 1775071 B1 EP1775071 B1 EP 1775071B1
Authority
EP
European Patent Office
Prior art keywords
openings
supporting plate
grinding
grinding machine
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
EP06024083A
Other languages
German (de)
English (en)
Other versions
EP1775071A1 (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
Publication of EP1775071A1 publication Critical patent/EP1775071A1/fr
Application granted granted Critical
Publication of EP1775071B1 publication Critical patent/EP1775071B1/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 plate for grinding machines according to the preamble of claim 1, as in the document EP-A-1 074 347 disclosed.
  • a known sanding pad 100 is shown for rotational drive on an output shaft 202 of a hand grinder 200.
  • openings 20 a plurality of openings
  • the air flow or air flow with the abrasive dust 300 takes place via these openings 20, ie the grinding dust 300 or the like arising during grinding can be replaced by these openings 20.
  • suction bell 206 are sucked.
  • Such a sanding pad is z. B. in the document EP 0 557 773 A1 disclosed.
  • a rotational drive of the sanding plate takes place on the output shaft of the (hand) grinding machine, wherein this sanding disc is automatically centered on the output shaft, in particular on a driver.
  • the disclosed DE 201 05 199 U1 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 sanding 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.
  • the EP 1 074 347 A2 describes a grinding wheel for use in a grinding apparatus having 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 a 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.
  • the grinding wheel according to the publication DE 21 45 714 A1 has on its entire surface on a perforation forming holes, which communicate with the inside of the plate approximately radially extending channels and the other end opens to the outside.
  • EP 0 781 629 A1 are a directly or indirectly with a machine or with a manually operable abrasive holder adaptable abrasive and a job-oriented application to a Machine grinding plate or on a grinding plate or on an operable abrasive holder with or without suction suitable adapter known.
  • At least the abrasive body has a perforation which is approximately evenly distributed over the entire surface of the abrasive body or at least partially arranged and penetrates at least the abrasive layer having, wherein the distance of the individual, the perforations forming openings to each other and to the suction of the sanding plate or the grinding plate is selected so that according to the document EP 0 781 629 A1 a stutter-free transport of the grinding dust should be effected.
  • DE 44 00 550 A1 is a sanding pad for a machine equipped with dust extraction machine known in which the Absaug tellbrüche in the disk body end-side have mouth areas whose openings are widened, so that even with eccentrically mounted sanding plates good dust flow is ensured.
  • a sanding pad for a dust extractor equipped sanding machine discloses the DE 89 02 423 U1 in which the disk body for Schleifstaubabsaugung with eight distributed on an inner circular line around the center, transverse to the disk body plane openings and eight formed on an outer circle around the center formed in the free surface of the disk body recesses formed over approximately radially extending channels with the periphery of the disk body and are connected to the openings, is equipped, and to which a disc of abrasive cloth abrasive material can be attached, which 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 at the bottom of a second recess which extends from the inner circular line to a middle, third circular line. This should be used discs of abrasive cloth any hole pattern.
  • the present invention has the object, a sanding pad of the type mentioned so that the air flow or flow with the grinding dust unbroken in aerodynamically formed openings or openings 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.
  • a sanding pad 100 is shown, which can be driven eccentrically by means of a hand grinder 200 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 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 (cf. Fig. 1 ).
  • the actual grinding process causing abrasive sheet 80 is held by means of a hook and loop fastener 70 on a cushion or pad 60 which is fixed on the side remote from the hand grinder 200 surface 16 of the support plate 10 (see. Fig. 1 ).
  • FIG. 2 shows, facing away from the hand grinder 200 bottom 16 of 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.
  • 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 their longitudinal center line 22 in approximately a circular arc (see. Fig. 5 and 6 ).
  • each opening 20 widens in the direction away from the center 12 of the support plate 10 towards the circumference 14 of the support plate 10, ie 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 longitudinal 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, so that 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 event that only one opening 20 (or, for example, an odd number of openings 20) is provided, the support plate 10 is to be balanced by attaching further masses. Essential to the invention is in any case the above-described aerodynamic design of the openings 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.
  • a total of eight projections 40 are arranged between each two openings 20; these raised, provided with recesses 42 projections 40 have the shape or contour of the gap between the openings 20 and serve for improved management of the sanding dust 300 containing air flow or air flow into the openings 20th

Landscapes

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

Claims (4)

  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 (200),
    caractérisé en ce
    que, pour la configuration aérodynamique des découpures ou ouvertures (20), chacune de ces découpures ou ouvertures présente une configuration ovale s'étendant radialement, orientée en longueur, avec deux bords latéraux longitudinaux (24, 26) qui convergent coniquement à une extrémité en direction du centre (12) de la plaque d'appui (10) et 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 taillé en biseau de telle manière que la surface affûtée s'élargit en direction du bord périphérique (14) de la plaque d'appui (10) de telle manière que la distance entre le bord latéral longitudinal (24) et le bord latéral longitudinal (26) de la découpure ou de l'ouverture (20) est plus petite dans la zone tournée vers le centre (12) de la plaque d'appui (10) que dans la zone tournée vers le bord périphérique (14) de la plaque d'appui (10), un côté inférieur (16) de la plaque d'appui (10) qui est opposé à la meuleuse (200) présentant plusieurs conduits de conduction de l'air (28) vers les découpures (20), cependant que sur le côté inférieur (16) de la plaque d'appui (10) qui est opposé à la meuleuse (200) au moins une section de bord en relief (30) est prévue et/ou au moins un moulage (40) entre au moins deux découpures ou ouvertures (20), section et/ou moulage 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 l'une des revendications 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).
EP06024083A 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler Expired - Lifetime EP1775071B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20312499U DE20312499U1 (de) 2003-08-11 2003-08-11 Schleifteller für Schleifmaschine
EP03026759A EP1506841B1 (fr) 2003-08-11 2003-11-21 Disque abrasif pour machine à meuler

Related Parent Applications (1)

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

Publications (2)

Publication Number Publication Date
EP1775071A1 EP1775071A1 (fr) 2007-04-18
EP1775071B1 true EP1775071B1 (fr) 2009-05-27

Family

ID=33521681

Family Applications (2)

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

Family Applications After (1)

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

Country Status (6)

Country Link
US (1) US7458884B2 (fr)
EP (2) EP1775071B1 (fr)
AT (2) ATE432148T1 (fr)
CA (1) CA2522113A1 (fr)
DE (3) DE20312499U1 (fr)
WO (1) WO2005016600A1 (fr)

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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
US20080160883A1 (en) * 2006-12-15 2008-07-03 Tbw Industries, Inc. Abrasive configuration for fluid dynamic removal of abraded material and the like
DE102007014766A1 (de) * 2007-03-28 2008-10-02 Robert Bosch Gmbh Exzentertellerschleifer
CA125471S (en) * 2007-10-08 2008-11-13 Rin Soon Park Grinding wheel
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
US9028300B2 (en) * 2011-08-31 2015-05-12 Ehwa Diamond Industrial Co., Ltd. Grinding tool adapted to collect grinding particles
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
CA2522113A1 (fr) 2005-02-24
ATE432148T1 (de) 2009-06-15
EP1506841B1 (fr) 2007-02-21
ATE354455T1 (de) 2007-03-15
EP1775071A1 (fr) 2007-04-18
US7458884B2 (en) 2008-12-02
DE20312499U1 (de) 2004-12-16
US20060189268A1 (en) 2006-08-24
EP1506841A1 (fr) 2005-02-16
DE50311561D1 (de) 2009-07-09
WO2005016600A1 (fr) 2005-02-24
DE50306585D1 (de) 2007-04-05

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