EP0285042A1 - Backup plate for abrasive discs - Google Patents

Backup plate for abrasive discs Download PDF

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Publication number
EP0285042A1
EP0285042A1 EP88104907A EP88104907A EP0285042A1 EP 0285042 A1 EP0285042 A1 EP 0285042A1 EP 88104907 A EP88104907 A EP 88104907A EP 88104907 A EP88104907 A EP 88104907A EP 0285042 A1 EP0285042 A1 EP 0285042A1
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EP
European Patent Office
Prior art keywords
disc
grinding
abrasive
circular line
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88104907A
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German (de)
French (fr)
Inventor
Manfred Ihmels
Hartmut Ihmels
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Ihmels Hartmut
IHMELS Manfred
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Individual
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Publication date
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Publication of EP0285042A1 publication Critical patent/EP0285042A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools

Definitions

  • the innovation relates to a grinding plate for a hand-held grinding machine equipped with dust extraction, with a supporting disc having a central pin for clamping in the grinding machine, on the side of which is remote from the pin, a disc body made of elastic material is arranged, which is equipped with openings for grinding dust extraction and on a disc made of abrasive cloth or the like abrasive material can be used, which has holes that are congruent with the openings.
  • the openings for grinding dust extraction are arranged on partial circles with different diameters.
  • Sanding discs with four or eight perforations evenly distributed on a circular line are known which run at a relatively short radial distance around the center of the sanding disc.
  • Grinding plates are also known, in which eight perforations are distributed over a circular line that runs relatively far outside in the vicinity of the outer circumference of the disk.
  • grinding plates are also known, in which six openings are distributed over a circular line which runs approximately in the middle of the radial distance between the center and the outer circumference of the grinding plate.
  • the innovation aims to design a sanding plate so that disks made of sanding lines can be attached with any hole pattern, without covering the openings in the sanding plates necessary for dust extraction.
  • this object is achieved in that eight openings running transversely to the plane of the window body are arranged distributed on an inner circular line around the center, that a groove is formed in the free surface of the window body, which groove affects the eight openings, and that eight Depressions on an outer circular line around the center are formed in the free surface of the disk body and are connected to the periphery of the disk body and to the groove via approximately radial channels.
  • the inner circular line located near the center with the eight perforations distributed thereon enables the use of discs made of abrasive material with eight holes on a corresponding circular line or with four holes which are arranged distributed on the same circular line.
  • the groove running around the center and molded into the surface of the disk body is arranged on a circular line which corresponds to the circular line on which six holes are arranged in a disk made of abrasive material. Since the groove affects the eight openings in the sanding plate, the passageway necessary for the dust extraction continues to exist when using a disc made of abrasive material with six holes, the grinding dust is first sucked through the holes in the disc into the groove and from there enters the openings in the grinding disc.
  • the eight depressions arranged on the outer circular line around the center of the wheel body make it possible to use a wheel made of abrasive material with eight holes arranged in the outer region through which grinding dust to be extracted can enter. Since the depressions are connected to the groove via approximately radially running channels, the function of dust extraction is maintained.
  • the new grinding disc is therefore suitable for fitting with any disc made of grinding material and can be used for grinding work without affecting the working method, in particular the extraction of the grinding dust.
  • grinding dust can advantageously also be extracted from the area of the outer circumference of the grinding wheel during the grinding work.
  • the depressions on the outer circular line can be shaped as blind holes. However, the depressions located on the outer circular line can also be the ends of grooves which branch off radially outwards starting from the circumferential groove.
  • the areas not involved in the suction are covered by the disc made of abrasive material.
  • the new arrangement of recesses, grooves and openings in the grinding plate has the advantage that the holes in the disc made of grinding material always ultimately with the openings for the suction of grinding dust are connected, whereby it does not depend on a special hole pattern of the discs made of abrasive material.
  • the channels that connect the recesses with the groove and / or with the periphery of the grinding plate are stitch holes running approximately in the plane of the disk body, which can be easily molded into the particularly elastic and thus soft material of the disk body.
  • a sanding plate according to a first embodiment is shown in plan view, which can be covered with a disc made of sanding lines or the like sanding material.
  • the disc made of abrasive material can be attached in a known manner, for example by gluing. Velcro bindings are also known.
  • the disc-shaped grinding body 1 of the grinding plate consists of elastic material, for example plastic or rubber.
  • a pin 3 is arranged in the center 2, with which the grinding plate can be clamped in the corresponding receptacle of a hand-held grinding machine.
  • Eight openings 5 are arranged regularly distributed on an inner circular line 4 around the center 2 of the disk body.
  • the openings run across the plane of the sanding plate and serve to extract sanding dust.
  • a groove 6 is formed around its center 2, which affects the eight openings 5.
  • regularly distributed recesses 8 are provided, which in this embodiment are the ends of grooves 9 which are branched off radially outward from the circumferential groove 6.
  • the depressions 8 are thereby connected to the groove 6.
  • 10 channels are referred to, which are formed here as approximately in the plane of the disc body 1 tap holes 11.
  • the tap holes run between the depressions 8 and the outer periphery 12 of the grinding body 1.
  • Fig. 2 the grinding plate is shown in a sectional view along the line II - II in Fig. 1. The same components are identified by the same reference numbers.
  • Fig. 2 shows that the disc body 1 is arranged on the underside of a support disc 13 and that the openings 5 extend through the disc body and the support disc.
  • FIG. 3 shows a view of the uncovered side of a pane body corresponding to FIG. 1, the depressions 8 in this exemplary embodiment being designed as blind holes 14 which are regularly distributed on the outer circular line 7.
  • FIG. 4 shows a sectional view of the grinding plate along the line IV-IV in FIG. 3.
  • the same components are identified by the same reference numbers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A back-up plate for a portable grinding machine equipped with dust extraction comprises a supporting disc having a central journal (3) for clamping in place in the grinding machine. An abrasive body (1) of elastic material is arranged on the side of the supporting disc remote from the journal. The abrasive body (1) is provided with apertures (5) for the extraction of the abrasive dust. A disc of abrasive cloth or suchlike abrasive material can be attached to the abrasive body (1). The disc of abrasive cloth has holes congruent with the apertures. Eight apertures (5) running transversely to the plane of the abrasive body are arranged so as to be distributed on an inner circular line (4) about the centre (2) of the abrasive body. Formed in the free surface of the abrasive body (1) is a groove (6) which encircles its centre (2) and is tangent to the eight apertures (5). Distributed on an outer circular line (7) around the centre (2), eight recesses are formed in the free surface of the abrasive body (1). The recesses are connected to the periphery (12) of the abrasive body (1) and to the groove (6) via channels (10) running approximately radially. <IMAGE>

Description

Die Neuerung betrifft einen Schleifteller für eine mit Staubab­saugung ausgerüstete Hand-Schleifmaschine, mit einer einen zen­trischen Zapfen zum Einspannen in die Schleifmaschine aufwei­senden Tragscheibe, an deren dem Zapfen abgekehrter Seite ein Scheibenkörper aus elastischem Werkstoff angeordnet ist, der mit Durchbrechungen zur Schleifstaubabsaugung ausgerüstet ist und an den eine Scheibe aus Schleifleinen oder dergleichen Schleifmaterial ansetzbar ist, die zu den Durchbrechungen kon­gruente Löcher hat.The innovation relates to a grinding plate for a hand-held grinding machine equipped with dust extraction, with a supporting disc having a central pin for clamping in the grinding machine, on the side of which is remote from the pin, a disc body made of elastic material is arranged, which is equipped with openings for grinding dust extraction and on a disc made of abrasive cloth or the like abrasive material can be used, which has holes that are congruent with the openings.

Bei bekannten Schleiftellern sind die Durchbrechungen zur Schleifstaubabsaugung auf Teilkreisen mit verschiedenen Durch­messern angeordnet. Bekannt sind Schleifteller mit vier oder acht gleichmäßig auf einer Kreislinie verteilten Durchbrechun­gen, die in verhältnismäßig kurzem radialem Abstand um das Zen­trum des Schleiftellers verläuft. Es sind auch Schleifteller bekannt, bei denen acht Durchbrechungen auf einem verhältnis­mäßig weit außen in der Nähe des äußeren Scheibenumfangs verlaufenden Kreislinie verteilt angeordnet sind. Weiterhin sind auch Schleifteller bekannt, bei denen sechs Durchbrechun­gen auf einer Kreislinie verteilt angeordnet sind, die etwa in der Mitte des radialen Abstands zwischen Zentrum und Außenum­fang des Schleiftellers verläuft.In known grinding plates, the openings for grinding dust extraction are arranged on partial circles with different diameters. Sanding discs with four or eight perforations evenly distributed on a circular line are known which run at a relatively short radial distance around the center of the sanding disc. Grinding plates are also known, in which eight perforations are distributed over a circular line that runs relatively far outside in the vicinity of the outer circumference of the disk. Furthermore, grinding plates are also known, in which six openings are distributed over a circular line which runs approximately in the middle of the radial distance between the center and the outer circumference of the grinding plate.

Bei der Anbringung von Scheiben aus Schleifleinen an der frei­en Oberfläche des Scheibenkörpers eines Schleiftellers ist des­ halb darauf zu achten, daß die in der Scheibe aus Schleiflei­nen befindlichen Löcher so angebracht sind, daß sie zu den Durchbrechungen im Schleifteller kongruent sind. Andernfalls werden die Durchbrechungen in den Scheiftellern von der Schei­be aus Schleifleinen abgedeckt und die Staubabsaugung damit außer Funktion gesetzt. Für jede Scheibe aus Schleifleinen muß deshalb auch der jeweils passende Schleifteller zur Verfügung stehen, bevor eine Schleifarbeit aufgenommen werden kann.When attaching discs made of abrasive cloth to the free surface of the disc body of a grinding disc, this is the half make sure that the holes in the disc made of abrasive cloth are made in such a way that they are congruent with the openings in the abrasive pad. Otherwise, the openings in the discs will be covered by the disc made of abrasive cloth and the dust extraction will be disabled. For each wheel made of abrasive cloth, the appropriate sanding pad must therefore be available before sanding can be started.

Die Neuerung bezweckt, einen Schleifteller so auszubilden, daß Scheiben aus Schleifleinen mit beliebigem Lochbild angesetzt werden können, ohne dabei die für die Staubabsaugung notwendi­gen Durchbrechungen in den Schleiftellern abzudecken.The innovation aims to design a sanding plate so that disks made of sanding lines can be attached with any hole pattern, without covering the openings in the sanding plates necessary for dust extraction.

Diese Aufgabe ist neuerungsgemäß dadurch gelöst, daß acht quer zur Scheibenkörperebene verlaufende Durchbrechungen auf einer inneren Kreislinie um das Zentrum verteilt angeordnet sind, daß in die freie Oberfläche des Scheibenkörpers eine um sein Zentrum umlaufende Rille eingeformt ist, welche die acht Durch­brechungen tangiert, und daß acht Vertiefungen auf einer äuße­ren Kreislinie um das Zentrum verteilt in die freie Oberfläche des Scheibenkörpers eingeformt sind, die über etwa radial ver­laufende Kanäle mit der Peripherie des Scheibenkörpers und mit der Rille verbunden sind.According to the innovation, this object is achieved in that eight openings running transversely to the plane of the window body are arranged distributed on an inner circular line around the center, that a groove is formed in the free surface of the window body, which groove affects the eight openings, and that eight Depressions on an outer circular line around the center are formed in the free surface of the disk body and are connected to the periphery of the disk body and to the groove via approximately radial channels.

Die in der Nähe des Zentrums angeordnete innere Kreislinie mit den darauf verteilten acht Durchbrechungen ermöglicht die Ver­wendung von Scheiben aus Schleifmaterial mit acht Löchern auf einer entsprechenden Kreislinie oder mit vier Löchern, die auf der gleichen Kreislinie verteilt angeordnet sind. Die um das Zentrum umlaufende, in die Oberfläche des Scheibenkörpers ein­geformte Rille ist auf einer Kreislinie angeordnet, die der Kreislinie entspricht, auf der sechs Löcher in einer Scheibe aus Schleifmaterial angeordnet sind. Da die Rille die acht Durchbrechungen in dem Schleifteller tangiert, besteht der für die Schleifstaubabsaugung notwendige Durchgangsweg weiter, da bei Verwendung einer Scheibe aus Schleifmaterial mit sechs Lö­chern der Schleifstaub zunächst durch die Löcher in der Schei­be in die Rille gesaugt wird und von dort in die Durchbrechun­gen im Schleifteller eintritt.The inner circular line located near the center with the eight perforations distributed thereon enables the use of discs made of abrasive material with eight holes on a corresponding circular line or with four holes which are arranged distributed on the same circular line. The groove running around the center and molded into the surface of the disk body is arranged on a circular line which corresponds to the circular line on which six holes are arranged in a disk made of abrasive material. Since the groove affects the eight openings in the sanding plate, the passageway necessary for the dust extraction continues to exist when using a disc made of abrasive material with six holes, the grinding dust is first sucked through the holes in the disc into the groove and from there enters the openings in the grinding disc.

Die auf der äußeren Kreislinie um das Zentrum des Scheibenkör­pers herum verteilt angeordneten acht Vertiefungen ermöglichen die Verwendung einer Scheibe aus Schleifmaterial mit im äuße­ren Bereich verteilt angeordneten acht Löchern, durch die abzu­saugender Schleifstaub eintreten kann. Da die Vertiefungen über etwa radial verlaufende Kanäle mit der Rille verbunden sind, wird die Funktion der Staubabsaugung aufrechterhalten. Der neuerungsgemäße Schleifteller ist somit für die Ausrüstung mit beliebigen Scheiben aus Schleifmaterial geeignet und kann für Schleifarbeiten benutzt werden, ohne Beeinträchtigung der Arbeitsweise, insbesondere der Absaugung des Schleifstaubs.The eight depressions arranged on the outer circular line around the center of the wheel body make it possible to use a wheel made of abrasive material with eight holes arranged in the outer region through which grinding dust to be extracted can enter. Since the depressions are connected to the groove via approximately radially running channels, the function of dust extraction is maintained. The new grinding disc is therefore suitable for fitting with any disc made of grinding material and can be used for grinding work without affecting the working method, in particular the extraction of the grinding dust.

Da die etwa radial verlaufenden Kanäle auch die äußeren Vertie­fungen mit der Peripherie des Scheibenkörpers verbinden, kann in vorteilhafter Weise auch Schleifstaub vom Bereich des äuße­ren Umfanges des Schleiftellers während der Schleifarbeiten abgesaugt werden.Since the approximately radially extending channels also connect the outer depressions to the periphery of the wheel body, grinding dust can advantageously also be extracted from the area of the outer circumference of the grinding wheel during the grinding work.

Die auf der äußeren Kreislinie befindlichen Vertiefungen kön­nen als Sacklöcher ausgeformt sein. Die auf der äußeren Kreis­linie befindlichen Vertiefungen können jedoch auch die Enden von Nuten sein, die von der umlaufenden Rille ausgehend radial nach außen abgezweigt sind.The depressions on the outer circular line can be shaped as blind holes. However, the depressions located on the outer circular line can also be the ends of grooves which branch off radially outwards starting from the circumferential groove.

Bei Aufbringen einer Scheibe aus Schleifmaterial mit beliebi­gem Lochbild werden die nicht an der Absaugung beteiligten Be­reiche durch die Scheibe aus Schleifmaterial abgedeckt. Die neuerungsgemäße Anordnung von Vertiefungen, Rille und Durchbre­chungen in dem Schleifteller hat den Vorteil, daß die in der Scheibe aus Schleifmaterial befindlichen Löcher immer letzt­lich mit den Durchbrechungen für die Absaugung von Schleif­ staub verbunden sind, wobei es nicht auf ein spezielles Loch­bild der Scheiben aus Schleifmaterial ankommt.When applying a disc made of abrasive material with any hole pattern, the areas not involved in the suction are covered by the disc made of abrasive material. The new arrangement of recesses, grooves and openings in the grinding plate has the advantage that the holes in the disc made of grinding material always ultimately with the openings for the suction of grinding dust are connected, whereby it does not depend on a special hole pattern of the discs made of abrasive material.

Die Kanäle, welche die Vertiefungen mit der Rille und/oder mit der Peripherie des Schleiftellers verbinden, sind etwa in der Ebene des Scheibenkörpers verlaufende Stichbohrungen, die sich in das insbesondere elastische und somit weiche Material des Scheibenkörpers leicht einformen lassen.The channels that connect the recesses with the groove and / or with the periphery of the grinding plate are stitch holes running approximately in the plane of the disk body, which can be easily molded into the particularly elastic and thus soft material of the disk body.

Ausführungsbeispiele sind in den Zeichnungen dargestellt. Es zeigen:

  • Fig. 1 eine Ansicht der freien unbedeckten Unterseite ei­nes ersten Ausführungsbeispieles eines Schleiftel­lers
  • Fig. 2 eine Seitenansicht des Schleiftellers im Schnitt entlang der Linie II - II in Fig. 1
  • Fig. 3 eine Ansicht der freien unbedeckten Unterseite ei­nes Schleiftellers gemäß einer zweiten Ausfüh­rungsform und
  • Fig. 4 eine Seitenansicht des Schleiftellers im Schnitt entlang der Linie IV - IV in Fig. 3
Exemplary embodiments are shown in the drawings. Show it:
  • Fig. 1 is a view of the free uncovered underside of a first embodiment of a grinding plate
  • FIG. 2 shows a side view of the grinding plate in section along the line II-II in FIG. 1
  • Fig. 3 is a view of the free uncovered underside of a grinding plate according to a second embodiment and
  • 4 shows a side view of the grinding plate in section along the line IV-IV in FIG. 3

In Fig. 1 ist die freie unbedeckte Unterseite eines Schleiftel­lers gemäß einer ersten Ausführungsform in der Draufsicht dar­gestellt, die mit einer Scheibe aus Schleifleinen oder derglei­chen Schleifmaterial abdeckbar ist. Die Scheibe aus Schleifma­terial läßt sich in bekannter Weise z.B. durch Kleben befesti­gen. Auch Klettberbindungen sind bekannt. Der scheibenförmige Schleifkörper 1 des Schleiftellers besteht aus elastischem Ma­terial, beispielsweise Kunststoff oder Gummi. Im Zentrum 2 ist ein Zapfen 3 angeordnet, mit dem der Schleifteller in der ent­sprechenden Aufnahme einer Hand-Schleifmaschine eingespannt werden kann. Auf einer inneren Kreislinie 4 um das Zentrum 2 des Scheibenkörpers sind acht Durchbrechungen 5 regelmäßig ver­teilt angeordnet. Die Durchbrechungen verlaufen quer zur Ebene des Schleiftellers und dienen zur Absaugung von Schleifstaub. In die freie Oberfläche des Scheibenkörpers 1 ist eine um sein Zentrum 2 umlaufende Rille 6 eingeformt, welche die acht Durch­brechungen 5 tangiert. Auf einer zweiten äußeren Kreislinie 7 um das Zentrum 2 sind, regelmäßig verteilt, in den Scheibenkör­per 1 eingeformte Vertiefungen 8 vorgesehen, die bei diesem Ausführungsbeispiel die Enden von Nuten 9 sind, die von der um­laufenden Rille 6 aus radial nach außen abgezweigt sind. Die Vertiefungen 8 stehen dadurch mit der Rille 6 in Verbindung. Mit 10 sind Kanäle bezeichnet, die hier als etwa in der Ebene des Scheibenkörpers 1 verlaufende Stichbohrungen 11 ausgebil­det sind. Die Stichbohrungen verlaufen bei diesem Ausführungs­beispiel zwischen den Vertiefungen 8 und der äußeren Periphe­rie 12 des Schleifkörpers 1.In Fig. 1, the free uncovered underside of a sanding plate according to a first embodiment is shown in plan view, which can be covered with a disc made of sanding lines or the like sanding material. The disc made of abrasive material can be attached in a known manner, for example by gluing. Velcro bindings are also known. The disc-shaped grinding body 1 of the grinding plate consists of elastic material, for example plastic or rubber. A pin 3 is arranged in the center 2, with which the grinding plate can be clamped in the corresponding receptacle of a hand-held grinding machine. Eight openings 5 are arranged regularly distributed on an inner circular line 4 around the center 2 of the disk body. The openings run across the plane of the sanding plate and serve to extract sanding dust. In the free surface of the disc body 1, a groove 6 is formed around its center 2, which affects the eight openings 5. On a second outer circular line 7 around the center 2, regularly distributed recesses 8 are provided, which in this embodiment are the ends of grooves 9 which are branched off radially outward from the circumferential groove 6. The depressions 8 are thereby connected to the groove 6. With 10 channels are referred to, which are formed here as approximately in the plane of the disc body 1 tap holes 11. In this exemplary embodiment, the tap holes run between the depressions 8 and the outer periphery 12 of the grinding body 1.

In Fig. 2 ist der Schleifteller in einer Schnittansicht ent­lang der Linie II - II in Fig. 1 dargestellt. Gleiche Bauteile sind mit gleichen Bezugszahlen bezeichnet. Fig. 2 läßt erken­nen, daß der Scheibenkörper 1 an der Unterseite einer Trag­scheibe 13 angeordnet ist und daß sich die Durchbrechungen 5 durch den Scheibenkörper und die Tragscheibe hindurch erstrek­ken.In Fig. 2 the grinding plate is shown in a sectional view along the line II - II in Fig. 1. The same components are identified by the same reference numbers. Fig. 2 shows that the disc body 1 is arranged on the underside of a support disc 13 and that the openings 5 extend through the disc body and the support disc.

Fig. 3 zeigt eine Ansicht der unbedeckten Seite eines Scheiben­körpers entsprechend Fig. 1, wobei die Vertiefungen 8 bei die­sem Ausführungsbeispiel als Sacklöcher 14 ausgebildet sind, die auf der äußeren Kreislinie 7 regelmäßig verteilt sind. Die Kanäle 10, die hier wiederum als Stichbohrungen 11 ausgebildet sind, verbinden jedes Sackloch 14 mit der äußeren Peripherie des Scheibenkörpers 1 sowie mit der Rille 6, die in den Schei­benkörper 1 so eingeformt ist, daß die Durchbrechungen 5 tan­giert werden.FIG. 3 shows a view of the uncovered side of a pane body corresponding to FIG. 1, the depressions 8 in this exemplary embodiment being designed as blind holes 14 which are regularly distributed on the outer circular line 7. The channels 10, which are in turn formed as tap holes 11, connect each blind hole 14 to the outer periphery of the disc body 1 and to the groove 6, which is formed in the disc body 1 so that the openings 5 are affected.

In Fig. 4 ist eine Schnittansicht des Schleiftellers entlang der Linie IV - IV in Fig. 3 dargestellt. Gleiche Bauteile sind mit gleichen Bezugszahlen bezeichnet.FIG. 4 shows a sectional view of the grinding plate along the line IV-IV in FIG. 3. The same components are identified by the same reference numbers.

Claims (4)

1. Schleifteller für eine mit Staubabsaugung ausgerüstete Hand-­Schleifmaschine, mit einer einen zentrischen Zapfen zum Ein­spannen in die Schleifmaschine aufweisenden Tragscheibe, an de­ren dem Zapfen abgekehrter Seite ein Scheibenkörper aus elasti­schem Werkstoff angeordnet ist, der mit Durchbrechungen zur Schleifstaubabsaugung ausgerüstet ist und an den eine Scheibe aus Schleifleinen oder dergleichen Schleifmaterial ansetzbar ist, die zu den Durchbrechungen kongruente Löcher hat,
dadurch gekennzeichnet,
daß acht quer zur Scheibenkörperebene verlaufende Durchbrechun­gen (5) auf einer inneren Kreislinie (4) um das Zentrum (2) verteilt angeordnet sind,
daß in die freie Oberfläche des Scheibenkörpers (1) eine um sein Zentrum (2) umlaufende Rille (6) eingeformt ist, welche die acht Durchbrechungen (5) tangiert und
daß acht Vertiefungen (8) auf einer äußeren Kreislinie (7) um das Zentrum (2) verteilt in die freie Oberfläche des Scheiben­körpers (1) eingeformt sind, die über etwa radial verlaufende Kanäle (10) mit der Peripherie (12) des Scheibenkörpers (1) und mit der Rille (6) verbunden sind.1.Grinding disc for a hand-held grinding machine equipped with dust extraction, with a supporting disc which has a central pin for clamping in the grinding machine, on the side of which facing away from the pin there is a disc body made of elastic material, which is equipped with openings for grinding dust extraction and on the one Disc made of abrasive cloth or similar abrasive material can be attached, which has holes congruent to the openings,
characterized,
that eight openings (5) running transversely to the disk body plane are arranged on an inner circular line (4) around the center (2),
that in the free surface of the disc body (1) is formed around its center (2) circumferential groove (6) which affects the eight openings (5) and
that eight recesses (8) are formed on an outer circular line (7) around the center (2) in the free surface of the disk body (1), which via approximately radially extending channels (10) with the periphery (12) of the disk body ( 1) and are connected to the groove (6). 2. Schleifteller nach Anspruch 1, dadurch gekennzeichnet, daß die auf der äußeren Kreislinie (7) befindlichen Vertiefungen (8) als Sacklöcher (14) ausgeformt sind.2. Sanding disc according to claim 1, characterized in that the recesses (8) located on the outer circular line (7) are formed as blind holes (14). 3. Schleifteller nach Anspruch 1, dadurch gekennzeichnet, daß die auf der äußeren Kreislinie (7) befindlichen Vertiefungen (8) die Enden von Nuten (9) sind, die, von der umlaufenden Rille (6) ausgehend, radial nach außen abgezweigt sind.3. Sanding disc according to claim 1, characterized in that the recesses (8) located on the outer circular line (7) are the ends of grooves (9) which, starting from the circumferential groove (6), are branched radially outward. 4. Schleifteller nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kanäle (10) etwa in der Ebene des Scheibenkörpers (1) verlaufende Stichbohrungen (11) sind.4. Grinding plate according to one of the preceding claims, characterized in that the channels (10) are approximately in the plane of the disc body (1) extending tap holes (11).
EP88104907A 1987-04-01 1988-03-26 Backup plate for abrasive discs Withdrawn EP0285042A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8704856U DE8704856U1 (en) 1987-04-01 1987-04-01 Sanding disc
DE8704856U 1987-04-01

Publications (1)

Publication Number Publication Date
EP0285042A1 true EP0285042A1 (en) 1988-10-05

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ID=6806594

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EP88104907A Withdrawn EP0285042A1 (en) 1987-04-01 1988-03-26 Backup plate for abrasive discs

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EP (1) EP0285042A1 (en)
DE (1) DE8704856U1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413956A2 (en) * 1989-08-23 1991-02-27 Robert Bosch Gmbh Hand tool with grinding disc
US6059644A (en) * 1998-11-18 2000-05-09 3M Innovative Properties Company Back-up pad for abrasive articles and method of making
EP1586417A2 (en) * 2004-04-17 2005-10-19 Peter Jöst Grinding disc with self-suction provision and method for removing grinding particles
US7244170B2 (en) 2005-09-16 2007-07-17 3M Innovative Properties Co. Abrasive article and methods of making same
US7252694B2 (en) 2005-08-05 2007-08-07 3M Innovative Properties Company Abrasive article and methods of making same
US7258705B2 (en) 2005-08-05 2007-08-21 3M Innovative Properties Company Abrasive article and methods of making same
US7329175B2 (en) 2004-12-30 2008-02-12 3M Innovative Properties Company Abrasive article and methods of making same
WO2007146608A3 (en) * 2006-06-13 2008-02-14 3M Innovative Properties Co Abrasive article and methods of making and using the same
US7390244B2 (en) 2005-09-16 2008-06-24 3M Innovative Properties Company Abrasive article mounting assembly and methods of making same
US7393269B2 (en) 2005-09-16 2008-07-01 3M Innovative Properties Company Abrasive filter assembly and methods of making same
EP3028811A1 (en) * 2014-12-05 2016-06-08 Guido Valentini Backing pad for a hand guided polishing or sanding tool and hand guided polishing or sanding tool with such a backing pad

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3742038A1 (en) * 1987-12-11 1989-06-22 Gerd Braasch GRINDING BODY FOR THE PROCESSING OF SURFACES, IN PARTICULAR WOOD SURFACES
DE8802927U1 (en) * 1987-12-15 1988-05-05 Braasch, Gerd, 4475 Sögel Grinding element for a grinding wheel
US4844967A (en) * 1988-10-14 1989-07-04 Minnesota Mining And Manufacturing Company Back up pad with drive adapter and offset passageways
DE9002801U1 (en) * 1990-03-09 1990-06-21 Nied, Hans Rainer, 8760 Miltenberg Sanding discs for hand sanders
DE4124520A1 (en) * 1991-07-24 1993-01-28 Kolthoff Ag Grinding disc for hand-held grinding tool - has dust removal holes inclined to surface of disc
DE102016100072A1 (en) * 2016-01-04 2017-07-06 Festool Gmbh Sanding pad and abrasives
DE102021209532A1 (en) 2021-08-31 2023-03-02 Tts Microcell Gmbh Sanding pad for a sander and sanding system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513464A1 (en) * 1974-03-26 1975-10-02 Nederman B P Philip GRINDING WHEEL
DE7818274U1 (en) * 1978-06-19 1978-10-05 Marton, Miksa, Windsor, Ontario (Kanada) HAND GRINDER
AU515812B2 (en) * 1975-11-26 1981-04-30 Miksa Marton Backup pad for a vacuum sanding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513464A1 (en) * 1974-03-26 1975-10-02 Nederman B P Philip GRINDING WHEEL
AU515812B2 (en) * 1975-11-26 1981-04-30 Miksa Marton Backup pad for a vacuum sanding device
DE7818274U1 (en) * 1978-06-19 1978-10-05 Marton, Miksa, Windsor, Ontario (Kanada) HAND GRINDER

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413956A2 (en) * 1989-08-23 1991-02-27 Robert Bosch Gmbh Hand tool with grinding disc
EP0413956A3 (en) * 1989-08-23 1991-04-24 Robert Bosch Gmbh Hand tool with grinding disc
US6059644A (en) * 1998-11-18 2000-05-09 3M Innovative Properties Company Back-up pad for abrasive articles and method of making
WO2000029172A1 (en) * 1998-11-18 2000-05-25 Minnesota Mining And Manufacturing Company Back-up pad for abrasive articles and method of making
US6361424B1 (en) 1998-11-18 2002-03-26 3M Innovative Properties Company Back-up pad for abrasive articles and method of making
EP1586417A2 (en) * 2004-04-17 2005-10-19 Peter Jöst Grinding disc with self-suction provision and method for removing grinding particles
EP1586417A3 (en) * 2004-04-17 2006-08-23 Peter Jöst Grinding disc with self-suction provision and method for removing grinding particles
US7329175B2 (en) 2004-12-30 2008-02-12 3M Innovative Properties Company Abrasive article and methods of making same
US7252694B2 (en) 2005-08-05 2007-08-07 3M Innovative Properties Company Abrasive article and methods of making same
US7258705B2 (en) 2005-08-05 2007-08-21 3M Innovative Properties Company Abrasive article and methods of making same
US7244170B2 (en) 2005-09-16 2007-07-17 3M Innovative Properties Co. Abrasive article and methods of making same
US7390244B2 (en) 2005-09-16 2008-06-24 3M Innovative Properties Company Abrasive article mounting assembly and methods of making same
US7393269B2 (en) 2005-09-16 2008-07-01 3M Innovative Properties Company Abrasive filter assembly and methods of making same
WO2007146608A3 (en) * 2006-06-13 2008-02-14 3M Innovative Properties Co Abrasive article and methods of making and using the same
CN101466500B (en) * 2006-06-13 2010-12-22 3M创新有限公司 Abrasive article and methods of making and using the same
EP3028811A1 (en) * 2014-12-05 2016-06-08 Guido Valentini Backing pad for a hand guided polishing or sanding tool and hand guided polishing or sanding tool with such a backing pad
CN105666351A (en) * 2014-12-05 2016-06-15 盖多·瓦伦蒂尼 Backing pad for a hand guided polishing or sanding tool and hand guided polishing or sanding tool with such a backing pad
US10576610B2 (en) 2014-12-05 2020-03-03 Guido Valentini Backing pad for a hand guided polishing or sanding tool and hand guided polishing or sanding tool with such a backing pad

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