EP1775071B1 - Abrasive disc for grinding machine - Google Patents

Abrasive disc for grinding machine Download PDF

Info

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)
French (fr)
Other versions
EP1775071A1 (en
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/en
Application granted granted Critical
Publication of EP1775071B1 publication Critical patent/EP1775071B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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)

Abstract

An improved grinding, or cutting disc, for a hand power tool, e.g. an angle grinder, has aerodynamic holes (20) for an enhanced airflow through the disc to the extract ducts remove grinding dust and grit. The extract holes can be rounded, oval or any suitable shape and with sloping edges to enhance the blower effect, and are positioned between the central mounting hole (12) and the outer rim (14).

Description

Die vorliegende Erfindung betrifft einen Schleifteller für Schleifmaschinen gemäß dem Oberbegriff des Anspruches 1, wie in der Druckschrift EP-A-1 074 347 offenbart.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.

In Fig. 1 ist ein bekannter Schleifteller 100 zur Drehmitnahme an einer Abtriebswelle 202 einer Handschleifmaschine 200 dargestellt.In Fig. 1 a known sanding pad 100 is shown for rotational drive on an output shaft 202 of a hand grinder 200.

Dieser Schleifteller 100 weist eine Stützplatte 10 mit mehreren Durchbrechungen (= Öffnungen 20) von in etwa kreisförmigem Querschnitt auf; über diese Durchbrechungen 20 erfolgt der Luftfluss oder Luftstrom mit dem Schleifmittelstaub 300, d. h. durch diese Durchbrechungen 20 kann der beim Schleifen entstehende Schleifstaub 300 o. dgl. (z. B. weitere feine Verunreinigungen, die beim Schleifen anfallen und zusammen mit dem Schleifstaub abtransportiert werden) unter Einsatz einer in oder an der Schleifmaschine 200 angeordneten, in Fig. 1 aus Gründen der Übersichtlichkeit der Darstellung nicht näher dargestellten Absaugglocke 206 abgesaugt werden.This sanding pad 100 has a support plate 10 with a plurality of openings (= openings 20) of approximately circular cross section; 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. (For example, further fine impurities which are produced during grinding and removed together with the grinding dust ) using an in or on the grinding machine 200, in Fig. 1 for reasons of clarity of illustration not shown suction bell 206 are sucked.

Eine derartiger Schleifteller ist z. B. in der Druckschrift EP 0 557 773 A1 offenbart. Bei dieser bekannten Anordnung erfolgt eine Drehmitnahme des Schleiftellers an der Abtriebswelle der (Hand-)Schleifmaschine, wobei sich dieser Schleifteller selbsttätig an der Abtriebswelle, insbesondere an einem Mitnehmer, zentriert.Such a sanding pad is z. B. in the document EP 0 557 773 A1 disclosed. In this known arrangement, 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.

Des weiteren offenbart die DE 201 05 199 U1 ein Schleifwerkzeug zur vorzugsweise Trockenbearbeitung von Beton oder Steinmaterialien mit Schleifmaschinen mit einer Absaugeinrichtung. Das tellerartige Schleifwerkzeug weist dabei einen Tragkörper mit mehreren Durchlassöffnungen und mit mehreren Schleifsegmenten auf. Um ein besseres Schleifwerkzeug zu schaffen, mit dem bessere Abtragsleistungen und Schleifqualitäten erreicht werden sollen, sind Durchlassöffnungen für den Schleifstaub vorgesehen, die sehr groß bemessen sind, so dass der Schleifstaub ohne große Rückstände abgesogen werden kann. Die Randbereiche der Durchlassöffnungen weisen Randbereiche auf, die scharfkantig, jedoch in keiner Weise angeschliffen oder abgeschrägt sind, so dass keine aerodynamisch günstige Ausbildung der Schleifabsaugdurchbrechungen geschaffen werden.Furthermore, 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. To get a better grinding tool To create, with the better removal rates and grinding qualities to be achieved, 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.

Die EP 1 074 347 A2 beschreibt eine Schleifscheibe für die Verwendung in einer Schleifvorrichtung mit einer Antriebseinrichtung zur Staubabfuhr, wobei eine Anzahl von Staubabfuhrlöcher in einem Hauptkörper angeordnet sind, der die Welle eines Elektromotors zum Verbinden mit der Schleifscheibe aufnimmt.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.

Die Staubabfuhrlöcher sind in Abständen in dem Hauptkörper angeordnet, um das Abführen des beim Schleifvorgang erzeugten Staubes durch die im Zusammenwirken mit den Staubabfuhrlöchern anzutreiben. Die Schleifscheibe umfasst dann ferner eine Anzahl von Schleifplättchen, die in vorbestimmten Abständen auf der unteren Fläche eines Umfangsteils des Hauptkörpers fest angeordnet sind. Zur Staubabfuhr weist die Antriebseinrichtung eine Anzahl von Antriebsschaufeln, die zur Drehrichtung des Hauptkörpers schräg liegen und jeweils obere und untere Flächen aufweisen, und die so angeordnet sind, dass sie Grenzflächen der Staubabfuhrlöcher zwischen sich bilden und von einer horizontalen Ebene nach oben geneigt sind, um die Luftantriebskraft zum Abführen von Staub zu erzeugen, wenn der elektromotorisch angetriebene Hauptkörper sich dreht. Mit dieser Schleifscheibe mit Antriebsschaufeln wird der beim Schleifvorgang erzeugte Staub zu einer Staubsammelmaschine abgeführt, um eine Verteilung des Staubes in die Luft zu verringern. Die im Hauptkörper vorgesehenen Staubabführlöcher weisen keine speziell geformten Randbereiche auf, so dass auch keine aerodynamisch günstige Ausbildung der Schleifstaubabsaugdurchbrechungen erhalten wird, um den Luftfluss mit dem Schleifstaub optimieren zu können.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. For discharging dust, 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. With this grinding wheel with drive blades, the dust generated during the grinding process is discharged to a dust collecting machine in order to reduce a distribution of the dust into the air. The provided in the main body Staubabführlöcher have no specially shaped edge areas, so that no aerodynamically favorable training the Schleifstaubabsaugdurchbrechungen is obtained in order to optimize the air flow with the grinding dust can.

Des weiteren ist es bekannt, bei als Winkelschleifgerät ausgebildeten Handschleifmaschinen an deren Gehäuse ein Absauggehäuse mit elastisch verformbarer Absaugmanschette anzuflanschen. Dieses Absauggehäuse ist mit einem Abluftstutzen versehen, von dem sich ein Absaugschlauch zum jeweiligen Absauggerät erstreckt. Am Maschinengehäuse ist ein seitlich abstehender Handgriff vorgesehen.Furthermore, it is known to flange at an angle grinder designed hand grinders on the housing, a suction with elastically deformable suction cuff. This suction housing is provided with an exhaust pipe from which a suction hose extends to the respective suction device. On the machine housing a laterally projecting handle is provided.

Gemäß der Druckschrift DE 40 32 069 A1 ist der Handgriff am zugleich als Absauggehäuse dienenden Schutzgehäuse für Antriebsorgane des Schleiftellers angeordnet, hohl ausgebildet sowie mit dem Hohlraum des Schutzgehäuses verbunden. Der Handgriff bildet ein Abführrohr für den Schleifstaub, an dessen freien Ende der Absaugschlauch befestigt ist, der sich vom Handgriff der Handschleifmaschine weg erstreckt.According to the document DE 40 32 069 A1 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.

Aus der Druckschrift DE 21 45 714 A1 ist ein Schleifwerkzeug von der Art bekannt, die eine biegsame auswechselbare Scheibe besitzt, deren Arbeitsfläche mit einem Schleif-Klebemittel-Gemisch bedeckt ist und deren andere Seite sich auf einem Teller abstützt, der mit einer Nabe zum Aufbringen auf das Ende einer sich mit hoher Geschwindigkeit drehenden Welle versehen ist.From the publication DE 21 45 714 A1 there is known a grinding tool of the type having a flexible interchangeable disc whose working surface is covered with an abrasive-adhesive mixture and the other side of which rests on a disc which is provided with a hub for application to the end of a high speed is provided rotating shaft.

Die Schleifscheibe gemäß der Druckschrift DE 21 45 714 A1 weist auf ihrer gesamten Oberfläche eine Perforierung bildende Löcher auf, die mit im Inneren des Tellers annähernd radial verlaufenden Kanälen in Verbindung stehen und deren anderes Ende nach außen mündet.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.

In der Druckschrift EP 0 781 629 A1 sind ein direkt oder indirekt mit einer Maschine oder mit einem manuell betreibbaren Schleifmittelhalter adaptierbarer Schleifkörper sowie ein zum arbeitsgerechten Aufbringen auf einen Maschinenschleifteller oder auf eine Schleifplatte bzw. auf einen betätigbaren Schleifmittelhalter mit oder ohne Absaugung geeigneter Adapter bekannt.In the publication 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.

Zumindest der Schleifkörper weist eine Perforation auf, die annähernd gleichmäßig über die gesamte Fläche des Schleifkörpers verteilt oder zumindest partiell angeordnet ist und die zumindest die das Schleifmittel aufweisende Schicht durchdringt, wobei der Abstand der einzelnen, die Perforation bildenden Durchbrechungen zueinander und gegenüber den Absaugeinrichtungen des Schleiftellers oder der Schleifplatte so gewählt ist, dass gemäß der Druckschrift EP 0 781 629 A1 ein nahezu stauloser Transport des Schleifstaubs bewirkt sein soll.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.

Ergänzend kann zum Stand der Technik noch auf die Druckschriften EP 1 186 379 A2 sowie US 4 616 449 hingewiesen werden.In addition to the state of the art still on the pamphlets EP 1 186 379 A2 such as US 4,616,449 be pointed out.

Durch die DE 44 00 550 A1 ist ein Schleifschuh für eine mit Staubabsaugung ausgerüstete Arbeitsmaschine bekannt, bei dem die Absaugdurchbrüche in dem Scheibenkörper einendseitig Mündungsbereiche aufweisen, deren Öffnungen verbreitert sind, so dass auch bei exzentrisch aufgelegten Schleiftellern ein guter Staubfluss gewährleistet ist.By the DE 44 00 550 A1 is a sanding pad for a machine equipped with dust extraction machine known in which the Absaugdurchbrüche 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.

Einen Schleifteller für eine mit Staubabsaugung ausgerüstete Schleifmaschine offenbart die DE 89 02 423 U1 , bei dem der Scheibenkörper zur Schleifstaubabsaugung mit acht auf einer inneren Kreislinie um das Zentrum verteilten, quer zur Scheibenkörperebene verlaufenden Durchbrechungen und mit acht auf einer äußeren Kreislinie um das Zentrum verteilten in die freie Oberfläche des Scheibenkörpers eingeformten Vertiefungen, die über etwa radial verlaufende Kanäle mit der Peripherie des Scheibenkörpers und mit den Durchbrechungen verbunden sind, ausgerüstet ist, und an den eine Scheibe aus Schleifleinen Schleifmaterial ansetzbar ist, die zu den Durchbrechungen auf einer der Kreislinien kongruente Löcher hat, wobei jede der auf der inneren Kreislinie verteilt angeordneten Durchbrechungen am Boden einer zweiten Vertiefung ausmündet, die sich von der inneren Kreislinie bis über eine mittlere, dritte Kreislinie hinaus erstreckt. Dadurch sollen Scheiben aus Schleifleinen beliebigem Lochbild verwendet werden.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.

Allerdings ist den vorstehend diskutierten Gegenständen gemäß dem Stand der Technik gemeinsam, dass der Luftfluss bzw. Luftstrom mit dem Schleifstaub nicht ungebrochen in die Durchbrechungen oder Öffnungen der Stützplatte gelangt, wobei die Öffnungen nicht aerodynamisch ausgebildet sind.However, the objects of the prior art discussed above share in common that the air flow or air flow with the grinding dust does not penetrate unbroken into the openings or openings of the support plate, wherein the openings are not aerodynamically formed.

Ausgehend von den vorstehend dargelegten Nachteilen und Unzulänglichkeiten sowie unter Würdigung des umrissenen Standes der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Schleifteller der eingangs genannten Art so weiterzuentwickeln, dass der Luftfluss bzw. Luftstrom mit dem Schleifstaub ungebrochen in aerodynamisch ausgebildete Durchbrechungen oder Öffnungen der Stützplatte gelangt, so dass der Schleifstaub besser den Durchbrechungen oder Öffnungen zugeführt, eine erhöhte Ansaugkraft erhalten und ein Zusetzen der Schleifscheibe mit abgetragenem Schleifstaub vermieden wird.Based on the disadvantages and inadequacies set out above, and in appreciation of the outlined prior art, 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.

Diese Aufgabe wird gemäß der Lehre der vorliegenden Erfindung durch einen Schleifteller mit den im Anspruch 1 genannten Merkmalen gelöst. Vorteilhafte Ausgestaltungen und zweckmäßige Weiterbildungen der vorliegenden Erfindung sind in den Unteransprüchen gekennzeichnet.This object is achieved according to the teaching of the present invention by a sanding pad having the features mentioned in claim 1. Advantageous embodiments and expedient developments of the present invention are characterized in the subclaims.

Um den Luftfluss bzw. den Luftstrom zusammen mit dem Schleifstaub ungebrochen in die Durchbrechungen bzw. Öffnungen der Stützplatte eines zur Drehmitnahme mit einer Antriebswelle verbundenen Schleiftellers einer Schleifmaschine, wie Handschleifmaschine, zu leiten, wobei der beim Schleifen entstehende Schleifstaub mittels mindestens einer in oder an der Schleifmaschine angeordneten Absaugglocke abgesogen wird, sieht die Erfindung vor, dass zur aerodynamischen Ausbildung der Durchbrechungen oder Öffnung (20) jede dieser Durchbrechungen oder Öffnungen eine etwa radial verlaufende, längsgerichtete ovale Ausgestaltung mit zwei Längsseitenrändern (24, 26), die einendseitig in Richtung zum Mittelpunkt (12) der Stützplatte (10) konisch zusammenlaufen und eine sich in etwa kreisbogenförmig erstreckende Längsmittellinie (22) aufweist und sich in Richtung zum umlaufenden Rand (14) der Stützplatte (10) hin erweitert, wobei nur ein Längsseitenrand (26) der beiden Längsseitenränder (24, 26) der Durchbrechung oder Öffnung (20) derart angeschliffen und/oder angeschrägt ist, dass die angeschliffene Fläche sich in Richtung zum umlaufenden Rand (14) der Stützplatte (10) hin erweitert, so dass der Abstand zwischen dem Längsseitenrand (24) und dem Längsseitenrand (26) der Durchbrechung oder Öffnung (20) in dem dem Mittelpunkt (12) der Stützplatte (10) zugewandten Bereich kleiner als in dem dem umlaufenden Rand (14) der Stützplatte (10) zugewandten Bereich ist, wobei eine von der Schleifmaschine (200) abgewandte Unterseite (16) der Stützplatte (10) mehrere Luftführungskanäle (28) zu den Durchbrechungen (20) aufweist, wobei auf der von der Schleifmaschine (200) abgewandten Unterseite (16) der Stützplatte (10) mindestens ein erhabener Randabschnitt (30) und/oder zwischen mindestens zwei Durchbrechungen oder Öffnungen (20) mindestens eine Anformung (40) vorgesehen ist, an denen mindestens ein Kissen oder Polster (60) zum lösbaren Fixieren mindestens eines Schleifblattes (80) abstützbar und/oder anbringbar ist.In order to guide the air flow and the air flow together with the grinding dust unbroken in the openings or openings of the support plate connected to the rotary drive with a drive shaft grinding plate grinding machine, such as hand grinder, wherein the resulting during grinding sanding dust by means of at least one in or on the Suction machine arranged sucking bell is sucked, sees the invention for the aerodynamic design of the openings or opening (20) of each of these openings or openings an approximately radially extending, longitudinal oval configuration with two longitudinal side edges (24, 26), the one end towards the center (12) of the support plate (10 ) converge conically and has an approximately circular arc extending longitudinal center line (22) and in the direction of the peripheral edge (14) of the support plate (10) out, with only one longitudinal side edge (26) of the two longitudinal side edges (24, 26) of the opening or opening (20) is ground and / or chamfered such that the ground surface widens in the direction of the peripheral edge (14) of the support plate (10), so that the distance between the longitudinal side edge (24) and the longitudinal side edge (26) the aperture or opening (20) in the center (12) of the support plate (10) facing the area smaller than in the uml on the edge (14) of the support plate (10) facing region, wherein one of the grinding machine (200) facing away underside (16) of the support plate (10) has a plurality of air ducts (28) to the openings (20), wherein on the of the Grinding machine (200) opposite bottom (16) of the support plate (10) at least one raised edge portion (30) and / or between at least two openings or openings (20) at least one Anformung (40) is provided at which at least one cushion or pad ( 60) for releasably fixing at least one abrasive sheet (80) can be supported and / or attached.

Durch diese aerodynamisch günstige Ausbildung der Schleifstaubabsaug-Durchbrechungen bzw. -Öffnungen wird der Luftfluss bzw. Luftstrom mit dem Schleifstaub optimiert und der Weg des Luftflusses bzw. Luftstroms vereinfacht, so dass der Luftfluss bzw. Luftstrom im wesentlichen ungebrochen in die Durchbrechungen bzw. Öffnungen gelangt; durch die Drehung des Schleiftellers erfolgt eine Erhöhung des Luftflusses bzw. Luftstroms durch die Durchbrechungen bzw. Öffnungen hindurch und somit eine Erhöhung der Ansaugkraft.Through this aerodynamically favorable design of the Schleifstaubabsaug perforations or -Öffnungen the air flow and air flow is optimized with the grinding dust and simplifies the path of the air flow or air flow, so that the air flow or air flow passes substantially unbroken in the openings or openings ; by the rotation of the grinding plate is an increase in the air flow or air flow through the apertures or openings therethrough and thus an increase in the suction force.

Erfindungsgemäß ist also ein nahezu stauloser Transport des Schleifstaubs bewirkt, so dass ein einwandfreies Schleifergebnis erzielt wird, denn die Schleifscheibe kann gar nicht mehr oder kaum noch von abgetragenem Schleifstaub zugesetzt werden; somit wird eine erheblich erhöhte Stand- bzw. Laufzeit des Schleifkörpers erreicht.According to the invention, therefore, a virtually stau-less transport of the grinding dust is effected, so that a perfect grinding result is achieved, because the grinding wheel can no longer or hardly be worn away Grinding dust are added; Thus, a significantly increased stability or running time of the grinding body is achieved.

Die dem Anspruch 1 nachgeordneten Ansprüche sind Weiterbildungen der Erfindung. Weitere Ausgestaltungen, Merkmale und Vorteile der vorliegenden Erfindung werden nachstehend anhand des durch die Fig. 2 bis 6 veranschaulichten Ausführungsbeispiels näher erläutert.The claims subordinate to claim 1 are developments of the invention. Further embodiments, features and advantages of the present invention are described below with reference to the. By the Fig. 2 to 6 illustrated embodiment explained in more detail.

Es zeigt:

Fig. 1
in Querschnittsdarstellung einen einer Handschleifmaschine mit Absaugglocke zugeordneten Schleifteller, an dem ein Schleifblatt angebracht ist, nach dem Stand der Technik,
Fig. 2
in Querschnittdarstellung ein Ausführungsbeispiel für einen Schleifteller gemäß der vorliegenden Erfindung,
Fig. 3
in frontaler Aufsicht den Schleifteller aus Fig. 2,
Fig. 4
in perspektivischer Aufsicht den Schleifteller aus Fig. 2 und 3,
Fig. 5
in frontaler Unteransicht den Schleifteller aus Fig. 2 bis 4,
Fig. 6
in perspektivischer Unteransicht den Schleifteller aus Fig. 2 bis 5.
It shows:
Fig. 1
a cross-sectional view of a sanding machine associated with a suction cup associated sanding pad on which a sanding sheet is mounted, according to the prior art,
Fig. 2
in cross-section an embodiment of a sanding pad according to the present invention,
Fig. 3
in frontal view, the sanding pad Fig. 2 .
Fig. 4
in perspective view of the sanding pad Fig. 2 and 3 .
Fig. 5
in frontal bottom view of the sanding pad Fig. 2 to 4 .
Fig. 6
in perspective bottom view of the sanding pad Fig. 2 to 5 ,

Gleiche oder ähnliche Ausgestaltungen, Elemente oder Merkmale sind in den Fig. 1 bis 6 mit identischen Bezugszeichen versehen.The same or similar embodiments, elements or features are in the Fig. 1 to 6 provided with identical reference numerals.

In den Fig. 2 bis 6 ist ein Schleifteller 100 dargestellt, der exzentrisch mittels einer insbesondere als Winkelschleifgerät ausgebildeten Handschleifmaschine 200 antreibbar ist. Hierzu weist eine derartige Handschleifmaschine 200 einen Antriebsmotor 204 mit einer vorzugsweise rechtwinklig abgeführten Abtriebswelle 202 auf, mittels derer der Schleifteller 100 im Wege der Drehmitnahme angetrieben wird (vgl. Fig. 1).In the Fig. 2 to 6 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. For this purpose, such 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 ).

Am Gehäuse der Handschleifmaschine 200 ist ein Schutzgehäuse für die Antriebsorgane des Schleiftellers 100 befestigbar; dieses Schutzgehäuse dient zugleich als Absauggehäuse für den beim Schleifen anfallenden Schleifstaub 300. Des weiteren ist am Gehäuse der Handschleifmaschine 200 ein Handgriff 208 angebracht, mittels dessen die Handschleifmaschine 200 während des Schleifvorgangs gehalten werden kann (vgl. Fig. 1).On the housing of the hand grinder 200, 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 ).

Das den eigentlichen Schleifvorgang bewirkende Schleifblatt 80 wird mittels eines Klettverschlusses 70 an einem Kissen oder Polster 60 gehalten, das auf der von der Handschleifmaschine 200 abgewandten Fläche 16 der Stützplatte 10 fixiert ist (vgl. Fig. 1). Mithin stellt die Unterseite 16 (= die von der Schleifmaschine 200 abgewandte Fläche) eine Anlagefläche für das Kissen oder Polster 60 und damit über den Klettverschluss 70 auch für das Schleifblatt 80 dar.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 ). Thus, the underside 16 (= the surface facing away from the grinding machine 200) is a contact surface for the pad or pad 60 and thus on the hook and loop fastener 70 also for the abrasive sheet 80.

Wie der Darstellung der Fig. 2 bis 6 entnehmbar ist, weist der Schleifteller 100 eine z. B. aus Metall gefertigte Stützplatte 10 mit insgesamt acht Durchbrechungen (= acht Staubabsaugeöffnungen 20) auf, über die der beim Schleifen entstehende Schleifstaub 300 (gegebenenfalls zusammen mit weiteren feinen Verunreinigungen) mittels der in der Handschleifmaschine 200 angeordneten Absaugglocke 206 abgesaugt werden kann; die eigentliche Handschleifmaschine 200 ist mit Absaugeinrichtungen (so genannten Absaugglocken oder Abzugsglocken 206) für den Schleifstaub versehen.As the representation of Fig. 2 to 6 can be removed, the sanding pad 100 has a z. B. made of metal support plate 10 with a total of eight openings (= eight Staubabsaugeöffnungen 20) over which the resulting grinding sanding dust 300 (possibly together with other fine impurities) can be sucked by means arranged in the hand grinder 200 suction bell 206; the actual hand grinder 200 is provided with suction devices (so-called suction bells or dangling bells 206) for the grinding dust.

Wie aus der Darstellung der Fig. 2 hervorgeht, weist die von der Handschleifmaschine 200 abgewandte Unterseite 16 der Stützplatte 10 mehrere (im vorliegenden Ausführungsbeispiel: acht) Luftführungskanäle 28 für die Zuführung des angesogenen Schleifstaubs 300 zu den Durchbrechungen 20 auf, durch die dann der Schleifstaub 300 abgesogen wird.As from the representation of 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.

Diese Kanalführungen 28 sind für die Luft mit dem Schleifstaub 300 auf der Unterseite 16 der Stützplatte 10 wesentlich, denn auf diese Weise gelangt der Luftfluss bzw. Luftstrom ungebrochen und im wesentlichen ungehindert in die Öffnungen 20.These 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

Die Besonderheit beim Schleifteller 100 gemäß den Fig. 2 bis 6 besteht nun darin, dass die Durchbrechungen 20 in der Stützplatte 10 des Schleiftellers 100 aerodynamisch geformt sind; es liegt also eine aerodynamische Formgebung für die Staubabsaugöffnungen (= Durchbrechungen 20) vor, so dass der Luftfluss bzw. Luftstrom mit dem Schleifstaub 300 ungebrochen in die Durchbrechungen oder Öffnungen 20 der Stützplatte 10 gelangt.The peculiarity of the sanding pad 100 according to the Fig. 2 to 6 consists in the fact that the openings 20 in the support plate 10 of the grinding plate 100 are aerodynamically shaped; Thus, there is an aerodynamic shape for the Staubabsaugöffnungen (= openings 20), so that the air flow or air flow with the grinding dust 300 passes unbroken in the openings or openings 20 of the support plate 10.

Die Durchbrechungen 20 sind in etwa oval ausgebildet und erstrecken sich vom Mittelpunkt 12 der Stützplatte 10 radial zum umlaufenden Rand 14 der Stützplatte 10 (vgl. Fig. 3 bis 6), wobei sich die Durchbrechungen 20 mit ihrer Längsmittellinie 22 in etwa kreisbogenförmig erstrecken (vgl. Fig. 5 und 6).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 ).

Der Darstellung der Fig. 3 bis 6 ist des weiteren entnehmbar, dass sich jede Durchbrechung 20 in Richtung vom Mittelpunkt 12 der Stützplatte 10 weg zum Umfang 14 der Stützplatte 10 hin erweitert, d. h. der Abstand zwischen dem ersten Längsseitenrand 24 der Durchbrechung 20 und dem zweiten Längsseitenrand 26 der Durchbrechung 20 ist im dem Mittelpunkt 12 der Stützplatte 10 zugewandten Bereich kleiner als im dem umlaufenden Rand 14 der Stützplatte 10 zugewandten Bereich.The representation of the Fig. 3 to 6 Furthermore, it can be seen that 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.

Ein weiteres erfindungswesentliches Merkmal ist durch einen schrägen Anschliff der Längsseitenränder 24, 26 einer jeden Durchbrechung 20 gegeben. Während der aufgrund der Richtung des Luftflusses oder Luftstroms des Schleifstaubs 300 von diesem Luftfluss oder Luftstrom kaum erfasste erste Längsseitenrand 24 der Durchbrechung 20 nahezu senkrecht verläuft, d. h. nur sehr schwach angeschliffen oder angeschrägt ist, ist der vom Luftfluss oder Luftstrom des Schleifstaubs 300 stark erfasste zweite Längsseitenrand 26 der Durchbrechung 20 sehr stark angeschliffen oder angeschrägt, um dem Luftfluss oder Luftstrom des Schleifstaubs 300 möglichst wenig Widerstand zu bieten, damit der Luftfluss oder Luftstrom mit dem Schleifstaub 300 ungebrochen in die aerodynamisch geformten Durchbrechungen oder Öffnungen 20 der Stützplatte 10 gelangt.Another feature essential to the invention 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.

Grundsätzlich können die Durchbrechungen 20 groß oder klein sein. In dem Falle, dass nur eine Durchbrechung 20 (oder z. B. eine ungerade Anzahl an Durchbrechungen 20) vorgesehen ist, ist die Stützplatte 10 durch Anbringen weiterer Massen auszuwuchten. Erfindungswesentlich ist in jedem Falle die vorbeschriebene aerodynamische Ausbildung der Durchbrechungen 20.In principle, 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

Auf der der Handschleifmaschine 200 zugewandte Oberseite 18 der Stützplatte 10 sind sich radial erstreckende Versteifungsstege 50 vorgesehen, mittels derer die Druckbelastungen der Stützplatte 10 aufgefangen werden. Diese acht Versteifungsstege 50 erstrecken sich jeweils in etwa hälftig in den Bereich zwischen jeweils zwei Durchbrechungen oder Öffnungen 20 hinein.On the hand grinder 200 facing top 18 of the support plate 10 are radially extending 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.

Während in den Fig. 3 und 4 die der Handschleifmaschine 200 zugewandte Oberseite 18 der Stützplatte 10 dargestellt ist, zeigen die Fig. 5 und 6 die von der Handschleifmaschine 200 abgewandte Unterseite 16 der Stützplatte 10.While in the Fig. 3 and 4 the hand grinder 200 facing top 18 of the support plate 10 is shown, show the Fig. 5 and 6 the remote from the hand grinder 200 bottom 16 of the support plate 10th

Auf dieser Unterseite 16 der Stützplatte 10 sind insgesamt acht Anformungen 40 zwischen jeweils zwei Durchbrechungen 20 angeordnet; diese erhabenen, mit Ausnehmungen 42 versehenen Anformungen 40 weisen die Form bzw. Kontur des Zwischenraums zwischen den Durchbrechungen 20 auf und dienen zur verbesserten Führung des den Schleifstaub 300 enthaltenden Luftflusses oder Luftstroms in die Durchbrechungen 20.On this underside 16 of the support plate 10, 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

Des weiteren ist auf der Unterseite 16 der Stützplatte 10 auch ein erhabener, mit Ausnehmungen 32 sowie mit den Durchbrechungen 20 zur Sammlung und Beschleunigung des Luftflusses bzw. Luftstroms des Schleifstaubs 300 räumlich zugeordneten Einbuchtungen 34 versehener Randabschnitt 30 angeordnet, der wie die Anformungen 40 zur Abstützung und Anlage des Kissens oder Polsters 60 dient.Furthermore, on the underside 16 of the support plate 10 and a raised, with recesses 32 and the openings 20 for collecting and accelerating the air flow or air flow of the grinding dust 300 spatially associated indentations 34 provided edge portion 30 is arranged, like the projections 40 for support and attachment of the pad or pad 60 serves.

BezuaszeichenlisteBezuaszeichenliste

100100
Schleiftellersanding pad
1010
Stützplattesupport plate
1212
Mittelpunkt der Stützplatte 10Center of the support plate 10
1414
Rand der StützplatteEdge of the support plate
1616
von der Schleifmaschine 200 abgewandte Fläche der Stützplatte 10from the grinding machine 200 facing away from the surface of the support plate 10th
1818
der Schleifmaschine 200 zugewandten Fläche der Stützplatte 10the grinding machine 200 facing surface of the support plate 10th
2020
Durchbrechung oder ÖffnungOpening or opening
2222
Mittellinie, insbesondere Längsmittellinie, der Durchbrechung oder Öffnung 20Center line, in particular longitudinal center line, the opening or opening 20
2424
erster Längsseitenrand der Durchbrechung oder Öffnung 20first longitudinal side edge of the opening or opening 20th
2626
zweiter Längsseitenrand der Durchbrechung oder Öffnung 20second longitudinal side edge of the opening or opening 20th
2828
LuftführungskanalAir duct
3030
Randabschnittedge section
3232
Ausnehmung des Randabschnitts 30Recess of the edge portion 30th
3434
Einbuchtung des Randabschnitts 30Indentation of the edge portion 30
4040
Anformungconformation
4242
Ausnehmung der Anformung 40Recess of Anformung 40th
5050
Versteifungsstegreinforcing web
6060
Kissen oder PolsterPillow or cushion
7070
Klettverschlussvelcro fastener
8080
Schleifblattsanding sheet
200200
Schleifmaschine, insbesondere HandschleifmaschineGrinding machine, in particular hand grinder
202202
Abtriebswelleoutput shaft
204204
Antriebsmotordrive motor
206206
Absaugglocke oder AbzugsglockeSuction bell or bell
208208
Handgriffhandle
300300
Schleifstaubswarf

Claims (4)

  1. Abrasive disc (100) for a grinding machine for the rotary driving on a driven shaft (202) of a grinding machine (200), in particular of a hand grinding machine, which has at least one supporting plate (10) with at least one opening or aperture (20) through which the grinding dust (300) which forms during grinding can be sucked off by means of at least one suction bell (206) placed in or on the grinding machine (200),
    characterized in
    that for the aerodynamic configuration of the openings or apertures (20) each of these openings or apertures has a radially extending oval configuration orientated lengthwise with two longitudinal side edges (24, 26) which converge conically at the one end in direction to the centre (12) of the supporting plate (10) and which has a longitudinal central line (22) extending approximately as an arc of a circle and which widens in direction of the peripheral edge (14) of the supporting plate (10), whereby only one longitudinal side edge (26) of the two longitudinal side edges (24, 26) of the opening or aperture (20) is polished and/or bevelled in such a manner that the polished surface widens in direction to the peripheral edge (14) of the supporting plate (10) so that the distance between the longitudinal side edge (24) and the longitudinal side edge (26) of the opening or aperture (20) is smaller in the area turned to the centre (12) of the supporting plate (10) than in the area turned to the peripheral edge (14) of the supporting plate (10), whereby one lower side (16) of the supporting plate (10) which is turned off the grinding machine (200) has several air conduction channels (28) to the openings (20), whereby on the lower side (16) turned off the grinding machine (200) at least one raised edge section (30) and/or between at least two openings or apertures (20) at least one moulding (40) is provided on which at least one cushion or pad (60) can be supported and/or fixed for the detachable fixing of at least one abrasive disc (80).
  2. Abrasive disc according to claim 1,
    characterized in
    that the opening or aperture (20) extends from the centre (12) of the supporting plate (10) radially to the peripheral edge (14) of the supporting plate (10).
  3. Abrasive disc according to any of the claims 1 or 2,
    characterized in
    that at least one radially extending stiffening ridge (50) is provided on or in the supporting plate (10).
  4. Abrasive disc according to claim 3,
    characterized in
    that the stiffening ridge (50)
    - is provided on the surface (18) of the supporting plate (10) which is turned to the grinding machine (200) and/or
    - is situated at least partially in the area between at least two openings or apertures (20).
EP06024083A 2003-08-11 2003-11-21 Abrasive disc for grinding machine Expired - Lifetime EP1775071B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20312499U DE20312499U1 (en) 2003-08-11 2003-08-11 Sanding disc for grinding machine
EP03026759A EP1506841B1 (en) 2003-08-11 2003-11-21 Abrasive disc for grinding machine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP03026759A Division EP1506841B1 (en) 2003-08-11 2003-11-21 Abrasive disc for grinding machine

Publications (2)

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

Family

ID=33521681

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06024083A Expired - Lifetime EP1775071B1 (en) 2003-08-11 2003-11-21 Abrasive disc for grinding machine
EP03026759A Expired - Lifetime EP1506841B1 (en) 2003-08-11 2003-11-21 Abrasive disc for grinding machine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03026759A Expired - Lifetime EP1506841B1 (en) 2003-08-11 2003-11-21 Abrasive disc for grinding machine

Country Status (6)

Country Link
US (1) US7458884B2 (en)
EP (2) EP1775071B1 (en)
AT (2) ATE354455T1 (en)
CA (1) CA2522113A1 (en)
DE (3) DE20312499U1 (en)
WO (1) WO2005016600A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006071875A1 (en) * 2004-12-29 2006-07-06 Millennium Pharmaceuticals, Inc. Compounds useful as chemokine receptor antagonists
DE102006013221A1 (en) * 2006-03-22 2007-09-27 Gämmerler AG Method of cutting paper products
CN101568406A (en) * 2006-12-15 2009-10-28 Tbw工业有限公司 Abrasive configuration for fluid dynamic removal of abraded material and the like
DE102007014766A1 (en) * 2007-03-28 2008-10-02 Robert Bosch Gmbh Eccentric disc grinder
US7717770B1 (en) 2008-07-08 2010-05-18 Clayton R Peterson Expansion joint grinder
DE102008055797A1 (en) * 2008-11-04 2010-05-06 Kai Roscher grinding machine
EP2305742B1 (en) 2009-10-01 2017-02-22 Symrise AG Spherical core-shell-particle
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 (en) * 2011-05-27 2012-09-10 Flex Trim As Grinding head
ITMI20111434A1 (en) * 2011-07-29 2013-01-30 Guido Valentini DOUBLE SUCTION CHAMBER CUP
US9028300B2 (en) * 2011-08-31 2015-05-12 Ehwa Diamond Industrial Co., Ltd. Grinding tool adapted to collect grinding particles
EP2758210B1 (en) * 2011-09-20 2016-05-18 Robert Bosch GmbH Retaining body for flexible grinding means, grinding system, and grinding tool
DE102012201329A1 (en) * 2012-01-31 2013-08-01 Robert Bosch Gmbh unit
USD748963S1 (en) 2013-07-05 2016-02-09 Flex-Elektrowerkzeuge Gmbh Grinding machine
DE102013213272A1 (en) * 2013-07-05 2015-01-08 Flex-Elektrowerkzeuge Gmbh Tool holder and hand-held grinding machine
SE540285C2 (en) * 2015-01-20 2018-05-22 Htc Sweden Ab System comprising a carrier disk and a floor grinding machine
TWI595965B (en) * 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 (en) * 2019-07-30 2021-02-04 Robert Bosch Gmbh Grinding tool
KR102182704B1 (en) * 2019-12-31 2020-11-25 주식회사 르본인터내셔널 A lapping process for precise and rapid lapping

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1778470A (en) * 1928-11-16 1930-10-14 Stratmore Company Surfacing apparatus
FR2365411A1 (en) * 1976-09-27 1978-04-21 Robert Jean SANDPAPER DISC SANDER MOUNTED ON A ROTATING CIRCULAR PLATE
US4616449A (en) 1984-08-31 1986-10-14 Miksa Marton Suction housing for vacuum sanding devices
DE8902423U1 (en) * 1989-03-01 1989-06-29 Ihmels, Manfred
DE4032069A1 (en) 1990-03-23 1991-09-26 Hans Rainer Nied Angle grinder with dust extracting guard - has suction passage for escape of dust laden air from guard incorporated in handle
DE4205977A1 (en) 1992-02-27 1993-09-02 Bosch Gmbh Robert GRINDING PLATE FROM MULTIPLE MATERIAL LAYERS
DE4400550A1 (en) * 1994-01-11 1995-07-13 Koltec Ag Grinding shoe for hand tool with vacuum removal of dust
US5609516A (en) * 1995-09-25 1997-03-11 Courson; Michael W. Rotating abrader with polygonal pad and dust evacuation
US6368199B1 (en) * 1995-12-08 2002-04-09 Saint-Gobain Technology Company Backing plates for abrasive disks
DE29520566U1 (en) 1995-12-29 1996-02-22 Joest Peter Abrasives that can be adapted directly or indirectly with a machine or a manually operated abrasive holder as well as a suitable adapter
JPH09267251A (en) * 1996-04-02 1997-10-14 S P Air Kk Grinding device
KR100314287B1 (en) * 1999-07-29 2001-11-23 김세광 Grinding wheel
DE20023967U1 (en) * 2000-03-14 2008-02-28 Robert Bosch Gmbh Electric hand grinder, in particular eccentric grinder
ITBO20000520A1 (en) 2000-09-07 2002-03-07 Bruno Oliosi DEVICE FOR GRINDING AND / OR ABRASION OF SURFACES THROUGH ORBITAL ROTARY MACHINES
KR100433194B1 (en) * 2001-02-19 2004-05-28 이화다이아몬드공업 주식회사 Grinding wheel with segment for preventing side abrasion
DE20105199U1 (en) * 2001-03-26 2002-08-08 Diewe Diamantwerkzeuge Gmbh grinding tool
US6743086B2 (en) * 2001-08-10 2004-06-01 3M Innovative Properties Company Abrasive article with universal hole pattern
JP3895256B2 (en) * 2002-10-11 2007-03-22 Ｙｋｋ株式会社 Polishing substrate for portable polishing machine

Also Published As

Publication number Publication date
DE50311561D1 (en) 2009-07-09
EP1506841A1 (en) 2005-02-16
WO2005016600A1 (en) 2005-02-24
CA2522113A1 (en) 2005-02-24
US20060189268A1 (en) 2006-08-24
EP1506841B1 (en) 2007-02-21
EP1775071A1 (en) 2007-04-18
DE50306585D1 (en) 2007-04-05
ATE432148T1 (en) 2009-06-15
DE20312499U1 (en) 2004-12-16
ATE354455T1 (en) 2007-03-15
US7458884B2 (en) 2008-12-02

Similar Documents

Publication Publication Date Title
EP1775071B1 (en) Abrasive disc for grinding machine
EP2349642B1 (en) Ceiling grinder
EP1866125B1 (en) Hand-held machine tool having a grinding disk
DE60024365T2 (en) Grinding wheel with dust ejection drive wings
EP0781629B1 (en) Directly or indirectly adaptable grinding body for a machine or a manually operable grinding device holder, as well as a suitable adapter for same
DE2427450A1 (en) DUST COLLECTING DEVICE FOR PORTABLE TURNTABLE MILL
EP1977858B1 (en) Sanding system
EP1321233B1 (en) Grinding tool
EP1925401B1 (en) Motor driven hand grinder with adjustable suction mechanism
EP3187305B1 (en) Grinding plate and abrasive
EP1120198B1 (en) Grinding tool, machine using the same and method using this tool for machining workpieces
DE19945060B4 (en) Sander machine
DE3145151C2 (en) Drivable roller for grinding or polishing the surface of a vehicle body or the like
DE602004012197T3 (en) Device including grinding wheel for electric hand grinder
DE7727864U1 (en) GRINDING DISC FOR A ROTARY SANDER
DE102008027141A1 (en) Abrasive wheel for use in machine tool for grinding workpiece, has abrasive free regions arranged between adjacent abrasive segments, and extending from central opening to outer edge of wheel, and carrier made of flexible material
DE19854113A1 (en) Tool for processing stone or stone-like materials
DE102016226273A1 (en) Abrasives fixture
DE102012214382A1 (en) Changeable abrasive for a grinder with suction device
DE20220969U1 (en) Tool holder for machining mineral surfaces e.g. stone floors fits on rotary drive support plate and is fitted with machining tool made from polycrystalline diamond set in socket on tool holder
WO2023126271A1 (en) Grinding means
DE2323782C3 (en) Sharpening roller for whetstones
DD282184A5 (en) HANGING TOOL FOR CLEANING SOLID STALLBOEDES IN ANIMAL PRODUCTION EQUIPMENT
DE202007016109U1 (en) Milling wheel with dust discharge opening for renovation routers and their arrangement
DE2264838A1 (en) Self-contained power sweeper vehicle - has brush roller located in transverse tunnel and replaceable tunnel insert

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20061129

AC Divisional application: reference to earlier application

Ref document number: 1506841

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17Q First examination report despatched

Effective date: 20070724

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 1506841

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50311561

Country of ref document: DE

Date of ref document: 20090709

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090927

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090827

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090907

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090827

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100302

BERE Be: lapsed

Owner name: UFI SCHLEIFTECHNIK G.M.B.H. & CO. KG

Effective date: 20091130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20091121

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100730

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100528

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090828

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50311561

Country of ref document: DE

Effective date: 20110601

Ref country code: DE

Ref legal event code: R119

Ref document number: 50311561

Country of ref document: DE

Effective date: 20110531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090527

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110531