EP1908554A1 - Grinding plate for vacuum fixation of grinding material - Google Patents

Grinding plate for vacuum fixation of grinding material Download PDF

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Publication number
EP1908554A1
EP1908554A1 EP07117626A EP07117626A EP1908554A1 EP 1908554 A1 EP1908554 A1 EP 1908554A1 EP 07117626 A EP07117626 A EP 07117626A EP 07117626 A EP07117626 A EP 07117626A EP 1908554 A1 EP1908554 A1 EP 1908554A1
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EP
European Patent Office
Prior art keywords
sanding pad
sanding
abrasive material
abrasive
grinding
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Granted
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EP07117626A
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German (de)
French (fr)
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EP1908554B1 (en
Inventor
Karsten Oesterheld
Thomas Neeb
Klaus Messerschmidt
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OnSystem oHG
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OnSystem oHG
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Publication of EP1908554A1 publication Critical patent/EP1908554A1/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
    • B24D9/10—Circular back-plates for carrying flexible material with suction means for securing the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/147—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface

Definitions

  • the invention relates to a sanding pad for a grinding device, which has a receptacle, is attached to the abrasive material by suction, wherein in the sanding pad a channel for attachment of the abrasive material is arranged by vacuum perpendicular to the grinding plane, which is located in the central region of the sanding pad.
  • a sanding pad which absorbs flexible abrasive material by suction.
  • the flexible abrasive material is formed from abrasive grain coated backing material.
  • the sanding pad consists of a Primasaugkanal, of which star-shaped horizontal Saugaugäle in the direction Branch off the outside of the sanding plate and open into a plurality of vertical suction channels evenly distributed in the sanding disk. This arrangement has some disadvantages. Only flexible abrasive material can be used.
  • the sanding pad must be made of non-deformable material when machining the workpieces to maintain the vacuum.
  • the solution shown is only suitable for rotary sander. There are several suction openings on the abrasive material side of the sanding pad necessary to fix the flexible abrasive material.
  • a machining apparatus in which a sanding pad is provided with a receptacle to which sanding material is attached by suction.
  • a channel for fixing the abrasive material is arranged by means of vacuum perpendicular to the grinding plane.
  • the channel is located in the central area of the sanding plate.
  • the invention has for its object to provide a vacuum attachment of abrasive material to a grinder, with which the processing of flat and uneven surfaces is possible, with a cost-effective, yet secure attachment is also possible for small abrasives.
  • the grinding disc according to the invention has for attachment to a grinding machine via a receptacle, is attached to the abrasive material by suction.
  • the sanding pad has a channel at the center of the surface, which is perpendicular to the sanding plane and which runs from the sanding material side to the opposite side of the sanding surface Sanding plate runs.
  • the attachment of an abrasive material is achieved without manual action by a vacuum is applied to an opening of a vacuum channel, which is located on the side facing away from the abrasive material of the grinding disc, which produces a non-positive connection of the abrasive material with the sanding pad.
  • the saving of fasteners on the back of the abrasive material results in a significant cost savings. By eliminating manual attachment of the abrasive material also reduces the set-up of the grinding machine.
  • the vacuum can be generated with the aid of one or more hoses and running through the inside of the machine channels or hoses on the sanding pad, so that a mobility of the sanding pad assembly when used in eccentric, linear or orbital sanders is made possible.
  • Any carrier material coated with abrasive grain can be used in the arrangement without additional coating of the backing material back.
  • material for the sanding plate metals or plastics can be used.
  • the execution of a sanding plate made of plastic allows due to the elastic deformability of the sanding pad an adaptation of the sanding pad to a workpiece.
  • the device according to the invention makes it possible to securely fasten very thin and flexible abrasives with very small diameters of support plates.
  • the central arrangement of the suction opening and the flexible design of abrasive and receiving plate not only flat surfaces, but also curved surfaces can be edited.
  • the abrasive can be tilted on the part to be machined without the vacuum is interrupted.
  • FIG. 1 shows a rotary grinding machine.
  • the grinding device 1 contains the sanding pad 2, a vacuum channel 4 extending through the drive shaft 3 and the sanding pad 2 and the abrasive material 5 fastened by vacuum.
  • the sanding pad 2 is connected to the drive shaft 3 and via this to the drive unit 7.
  • the abrasive material 5 is preferably designed as a round paper sheet with abrasive bodies mounted thereon. However, other forms are possible, for example, it may be formed as a wave edge.
  • FIG. 2 shows an enlarged schematic sectional view of the grinding disk 2 contained in FIG. 1 along the section line A-A '.
  • the abrasive material 5 is fixed by means of vacuum on the underside of the sanding pad 2.
  • the threaded piece 6 connects the sanding pad 2 with the drive shaft 3 shown in Figure 1.
  • the vacuum is preferably generated by means of ejectors, not shown here. It can also be produced with venturi nozzles, pumps, blowers and suckers.
  • the vacuum is supplied to the grinder 1 via one or more hoses or through channels running inside the machine and directed via the vacuum channel 5 to the abrasive side of the sanding plate 2.
  • the abrasive material 5 adheres by the suction effect on the sanding pad 2, wherein the sanding pad 2 consists of a material which ensures the highest possible static friction between sanding pad 2 and 5 abrasive material. As a result, a displacement of the abrasive material 5 is prevented on the sanding plate 2 and allows the safe processing of the workpieces.
  • the sanding pad 2 consists of an upper part 2.1 and a lower part 2.2.
  • Plastic or metal is preferably used for the upper part 2.1 consisting of a solid carrier material, while the lower part 2.2 consists of a flexible material, for example neoprene. It is also possible that the sanding pad 2 has on its underside, against which the abrasive 5, radial short slots which are connected to the central of the outlet opening of the vacuum channel and effect an improved contact of the abrasive 5.
  • the use of elastic plastic material for the sanding pad 2 allows the machining of curved workpieces. It is particularly advantageous that the design according to the invention can also be used for small diameters and single-handed grinders.
  • Figure 3 shows an embodiment in which in the lower part 2.2 of the grinding plate 2, a milled recess is 2.2.1 incorporated.
  • the milled recess 2.2.1 is mounted as a circumferential groove on the lateral surface of the lower part 2.2.
  • a stable disc 2.3 is attached at the bottom of the lower part 2.2, at which the abrasive 5 is sucked in.
  • Figure 4 shows an embodiment for the design of a flexible abrasive material 5.
  • the abrasive material 5 is designed as a round paper sheet with abrasive bodies mounted thereon.
  • apertures are made around the center where the leaflet is sucked against the sanding pad 2.
  • circular slits 5.1... 5.4 are stamped for this purpose. It is also possible that incisions or stampings of different shapes are appropriate. In addition to the better processing possibility of curved surfaces, this also results in improved adhesion of the paper to the sanding pad. 2
  • FIG. 5 shows an arrangement in which the sanding pad 2 is mounted in an additional device 9.
  • the attachment 9 is attached to a commercial hand grinder.
  • the vacuum channel 4 is connected via a hose connection with a vacuum pump.
  • the sanding pad 2 is driven by a belt drive 10 from the grinding wheel 11 of a hand grinder. This design allows for easy and inexpensive attachment of the pneumatic assembly to existing equipment.

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

Abstract

Die Erfindung betrifft einen Schleifteller für ein Schleifgerät, der eine Aufnahme aufweist, an der Schleifmaterial mittels Saugwirkung befestigt wird, wobei im Schleifteller ein Kanal zur Befestigung des Schleifmaterials mittels Vakuum senkrecht zur Schleifebene angeordnet ist, welcher sich im zentralen Bereich des Schleiftellers befindet. Der Erfindung liegt die Aufgabe zugrunde, eine Vakuumbefestigung von Schleifmaterial an einem Schleifgerät anzugeben, mit dem die Bearbeitung von ebenen und unebenen Flächen möglich ist, wobei eine kostengünstige und trotzdem sichere Befestigung auch für kleine Schleifmittel ermöglicht wird. Die Aufgabe wird erfindungsgemäß mit einer Anordnung gelöst, bei der das Schleifmaterial (5) aus einem flexiblen Schleifmaterial besteht, der Kanal (4) durch den Flächenmittelpunkt der Berührungsfläche des Schleiftellers (2) mit dem Schleifmittel (5) verläuft und der Schleifteller (2) aus einem starren Oberteil (2.1) und einem Unterteil (2.2) aus flexiblem Material besteht.The invention relates to a sanding pad for a grinding device, which has a receptacle, is attached to the abrasive material by suction, wherein in the sanding pad a channel for attachment of the abrasive material is arranged by vacuum perpendicular to the grinding plane, which is located in the central region of the sanding pad. The invention has for its object to provide a vacuum attachment of abrasive material to a grinder, with which the processing of flat and uneven surfaces is possible, with a cost-effective, yet secure attachment is also possible for small abrasives. The object is achieved with an arrangement in which the abrasive material (5) consists of a flexible abrasive material, the channel (4) through the center of area of the contact surface of the sanding pad (2) with the abrasive (5) and the sanding pad (2) consists of a rigid upper part (2.1) and a lower part (2.2) made of flexible material.

Description

Die Erfindung betrifft einen Schleifteller für ein Schleifgerät, der eine Aufnahme aufweist, an der Schleifmaterial mittels Saugwirkung befestigt wird, wobei im Schleifteller ein Kanal zur Befestigung des Schleifmaterials mittels Vakuum senkrecht zur Schleifebene angeordnet ist, welcher sich im zentralen Bereich des Schleiftellers befindet.The invention relates to a sanding pad for a grinding device, which has a receptacle, is attached to the abrasive material by suction, wherein in the sanding pad a channel for attachment of the abrasive material is arranged by vacuum perpendicular to the grinding plane, which is located in the central region of the sanding pad.

Im Stand der Technik sind verschiedene Befestigungsarten von Schleifpapier an einem Schleifteller bekannt. Aus DE 297 03 898 U1 ist ein Schleifteller bekannt, mit dem Schleifmaterial mittels einer Unterlegscheibe und Mutter auf der Antriebswelle verschraubt ist. In DE 197 29 125 C1 ist eine Anordnung beschrieben, bei der Schleifteller und Schleifmaterial miteinander verklebt sind. In DE 42 41 908 A1 ist eine Ausführung angegeben, bei der das Schleifmaterial am Schleifteller mittels Klettverschlusstechnik befestigt ist. Bei allen diesen Lösungen ist der zeitaufwendige Schleifmaterialwechsel nachteilig. Ein Schleifmaterialwechsel kann nicht automatisiert erfolgen.Various types of attachment of sandpaper to a sanding pad are known in the art. Out DE 297 03 898 U1 a sanding pad is known, is screwed to the abrasive material by means of a washer and nut on the drive shaft. In DE 197 29 125 C1 an arrangement is described in which sanding pad and abrasive material are glued together. In DE 42 41 908 A1 an embodiment is specified in which the abrasive material is attached to the sanding pad by Velcro technology. In all these solutions, the time-consuming change of abrasive material is disadvantageous. A change of abrasive material can not be automated.

Aus US 2001/0005668A1 ist eine Handschleifmaschine bekannt, bei der das Schleifmaterial mittels Vakuum an den Schleifteller gesaugt wird. Diese Lösung hat den Nachteil, dass der Schleifteller aus starrem Material besteht. Die Ausführung ist zudem nur für Rotationsschleifmaschinen geeignet.Out US 2001 / 0005668A1 a hand grinder is known in which the abrasive material is sucked by vacuum to the sanding pad. This solution has the disadvantage that the sanding pad is made of rigid material. The design is also only suitable for rotary grinding machines.

In DD 225 093 A1 ist ein Schleifteller beschrieben, der flexibles Schleifmaterial mittels Saugwirkung aufnimmt. Das flexible Schleifmaterial wird aus mit Schleifkorn beschichtetem Trägermaterial gebildet. Der Schleifteller besteht aus einem Zentralsaugkanal, von welchem sternförmig angeordnete Horizontalsaugkanäle in Richtung Außenseite des Schleiftellers abzweigen und in mehrere, im Schleifteller gleichmäßig verteilt angeordnete Vertikalsaugkanäle münden. Diese Anordnung weist einige Nachteile auf. Es kann nur flexibles Schleifmaterial verwendet werden. Der Schleifteller muss aus bei der Bearbeitung der Werkstücke unverformbaren Material bestehen, um das Vakuum aufrechtzuerhalten. Die in DD 225 093 A1 gezeigte Lösung ist nur für Rotationsschleifer geeignet. Es sind mehrere Saugöffnungen auf der Schleifmaterialseite des Schleiftellers notwendig, um das flexible Schleifmaterial zu fixieren.In DD 225 093 A1 a sanding pad is described which absorbs flexible abrasive material by suction. The flexible abrasive material is formed from abrasive grain coated backing material. The sanding pad consists of a Zentralsaugkanal, of which star-shaped horizontal Saugaugäle in the direction Branch off the outside of the sanding plate and open into a plurality of vertical suction channels evenly distributed in the sanding disk. This arrangement has some disadvantages. Only flexible abrasive material can be used. The sanding pad must be made of non-deformable material when machining the workpieces to maintain the vacuum. In the DD 225 093 A1 The solution shown is only suitable for rotary sander. There are several suction openings on the abrasive material side of the sanding pad necessary to fix the flexible abrasive material.

Aus DE 298 09 710 U1 ist eine maschinelle Bearbeitungsvorrichtung bekannt, bei der ein Schleifteller mit einer Aufnahme versehen ist, an der Schleifmaterial mittels Saugwirkung befestigt wird. Im Schleifteller ist senkrecht zur Schleifebene ein Kanal zur Befestigung des Schleifmaterials mittels Vakuum angeordnet. Der Kanal befindet sich im zentralen Bereich des Schleiftellers. Nachteilig ist dabei, dass das Schleifmaterial in einer Vertiefung im Schleifteller angeordnet, so dass nur ebene Flächen bearbeitet werden können.Out DE 298 09 710 U1 For example, a machining apparatus is known in which a sanding pad is provided with a receptacle to which sanding material is attached by suction. In the sanding plate, a channel for fixing the abrasive material is arranged by means of vacuum perpendicular to the grinding plane. The channel is located in the central area of the sanding plate. A disadvantage is that the abrasive material arranged in a recess in the sanding pad, so that only flat surfaces can be edited.

Der Erfindung liegt die Aufgabe zugrunde, eine Vakuumbefestigung von Schleifmaterial an einem Schleifgerät anzugeben, mit dem die Bearbeitung von ebenen und unebenen Flächen möglich ist, wobei eine kostengünstige und trotzdem sichere Befestigung auch für kleine Schleifmittel ermöglicht wird.The invention has for its object to provide a vacuum attachment of abrasive material to a grinder, with which the processing of flat and uneven surfaces is possible, with a cost-effective, yet secure attachment is also possible for small abrasives.

Die Aufgabe wird erfindungsgemäß mit einer Anordnung, welche die im Anspruch 1 angegebenen Merkmale aufweist, gelöst.The object is achieved with an arrangement having the features specified in claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche. Gegenstand der Anmeldung sind auch Merkmalskombinationen bei denen die in der Beschreibung und/oder in den Ansprüchen angegebenen Einzelmerkmale beliebig miteinander kombiniert werden.Advantageous developments of the invention are the subject of the dependent claims. The application also relates to combinations of features in which the individual features specified in the description and / or in the claims are combined with one another as desired.

Der erfindungsgemäße Schleifteller verfügt zur Anbringung an einer Schleifmaschine über eine Aufnahme, an der Schleifmaterial mittels Saugwirkung befestigt wird. Der Schleifteller weist im Flächenmittelpunkt einen Kanal auf, der senkrecht zur Schleifebene steht und der von der Schleifmaterialseite zur gegenüberliegenden Seite des Schleiftellers verläuft. Vorteilhaft bei dieser Anordnung ist, dass nur ein Vakuumkanal zur Erzeugung der Haftung notwendig ist.The grinding disc according to the invention has for attachment to a grinding machine via a receptacle, is attached to the abrasive material by suction. The sanding pad has a channel at the center of the surface, which is perpendicular to the sanding plane and which runs from the sanding material side to the opposite side of the sanding surface Sanding plate runs. An advantage of this arrangement is that only a vacuum channel for generating the adhesion is necessary.

Die Befestigung eines Schleifmaterials wird ohne manuelle Tätigkeit erreicht, indem an einer Öffnung eines Vakuumkanals, die sich an der dem Schleifmaterial abgewandten Seite des Schleiftellers befindet, ein Vakuum angelegt wird, welches eine kraftschlüssige Verbindung des Schleifmaterials mit dem Schleifteller herstellt. Durch die Einsparung von Befestigungsmitteln auf der Rückseite des Schleifmaterials ergibt sich eine erhebliche Kostenersparnis. Durch den Wegfall einer manuellen Befestigung des Schleifmaterials reduziert sich außerdem die Rüstzeit der Schleifmaschine.The attachment of an abrasive material is achieved without manual action by a vacuum is applied to an opening of a vacuum channel, which is located on the side facing away from the abrasive material of the grinding disc, which produces a non-positive connection of the abrasive material with the sanding pad. The saving of fasteners on the back of the abrasive material results in a significant cost savings. By eliminating manual attachment of the abrasive material also reduces the set-up of the grinding machine.

Das Vakuum kann mit Hilfe eines oder mehrerer Schläuche sowie durch im Inneren der Maschine verlaufende Kanäle oder Schläuche am Schleifteller erzeugt werden, so dass auch eine Beweglichkeit der Schleiftelleranordnung bei dem Einsatz in Exzenter-, Linear- oder Schwingschleifern ermöglicht wird.The vacuum can be generated with the aid of one or more hoses and running through the inside of the machine channels or hoses on the sanding pad, so that a mobility of the sanding pad assembly when used in eccentric, linear or orbital sanders is made possible.

Es ist jedes mit Schleifkorn beschichtetes Trägermaterial in der Anordnung ohne zusätzliche Beschichtung der Trägermaterialrückseite verwendbar. Als Material für den Schleifteller sind Metalle oder Kunststoffe verwendbar. Die Ausführung eines Schleiftellers aus Kunststoff ermöglicht aufgrund der elastischen Verformbarkeit des Schleiftellers eine Anpassung des Schleiftellers an ein Werkstück.Any carrier material coated with abrasive grain can be used in the arrangement without additional coating of the backing material back. As material for the sanding plate metals or plastics can be used. The execution of a sanding plate made of plastic allows due to the elastic deformability of the sanding pad an adaptation of the sanding pad to a workpiece.

Die erfindungsgemäße Vorrichtung ermöglicht es, sehr dünne und flexible Schleifmittel mit sehr kleinen Durchmessern von Trägertellern sicher zu befestigen. Durch die zentrale Anordnung der Ansaugöffnung und die flexible Ausführung von Schleifmittel und Aufnahmeteller können nicht nur plane Flächen, sondern auch gewölbte Flächen bearbeitet werden. Das Schleifmittel kann verkantet auf das zu bearbeitende Teil aufgesetzt werden, ohne dass das Vakuum unterbrochen wird.The device according to the invention makes it possible to securely fasten very thin and flexible abrasives with very small diameters of support plates. The central arrangement of the suction opening and the flexible design of abrasive and receiving plate not only flat surfaces, but also curved surfaces can be edited. The abrasive can be tilted on the part to be machined without the vacuum is interrupted.

Im Folgenden wird die Erfindung an einem Ausführungsbeispiel näher erläutert. In der zugehörigen Zeichnung zeigen:

Figur 1
eine schematische Darstellung einer Ausführungsform für eine Rotationsschleifmaschine,
Figur 2
eine Schnittdarstellung durch den Schleifteller entlang der Schnittlinie A - A',
Figur 3
eine Schnittdarstellung entlang der Schnittlinie A - A' durch einen Schleifteller mit Einfräsung im Trägermaterial,
Figur 4
eine spezielle Schleifmittelausführung
und
Figur 5
eine Anordnung, bei der der Schleifteller in einer Zusatzeinrichtung an einer handelsüblichen Schleifmaschine angebracht ist
In the following, the invention will be explained in more detail using an exemplary embodiment. In the accompanying drawing show:
FIG. 1
a schematic representation of an embodiment for a rotary grinding machine,
FIG. 2
a sectional view through the sanding pad along the section line A - A ',
FIG. 3
a sectional view along the section line A - A 'through a grinding plate with milled in the substrate,
FIG. 4
a special abrasive version
and
FIG. 5
an arrangement in which the sanding pad is mounted in an auxiliary device on a commercial grinding machine

In Figur 1 ist eine Rotationsschleifmaschine dargestellt. Das Schleifgerät 1 enthält den Schleifteller 2, einem durch die Antriebswelle 3 und den Schleifteller 2 verlaufenden Vakuumkanal 4 und das mittels Vakuum befestigte Schleifmaterial 5. Der Schleifteller 2 ist mit der Antriebswelle 3 und über diese mit der Antriebseinheit 7 verbunden. Das Schleifmaterial 5 ist vorzugsweise als rundes Blättchen aus Papier mit darauf befestigten Schleifkörpern ausgeführt. Es sind jedoch auch andere Formen möglich, z.B. kann es als Wellenrand ausgebildet sein. FIG. 1 shows a rotary grinding machine. The grinding device 1 contains the sanding pad 2, a vacuum channel 4 extending through the drive shaft 3 and the sanding pad 2 and the abrasive material 5 fastened by vacuum. The sanding pad 2 is connected to the drive shaft 3 and via this to the drive unit 7. The abrasive material 5 is preferably designed as a round paper sheet with abrasive bodies mounted thereon. However, other forms are possible, for example, it may be formed as a wave edge.

Figur 2 zeigt eine vergrößerte schematische Schnittdarstellung des in Figur 1 enthaltenen Schleiftellers 2 entlang der Schnittlinie A-A'. Durch den Schleifteller 2 hindurch, senkrecht zur Schleifebene 8, verläuft der Vakuumkanal 4. Das Schleifmaterial 5 ist mittels Vakuum an der Unterseite des Schleiftellers 2 befestigt. Das Gewindestück 6 verbindet den Schleifteller 2 mit der in Figur 1 gezeigten Antriebswelle 3. Das Vakuum wird vorzugsweise mit Hilfe von hier nicht dargestellten Ejektoren erzeugt. Es kann aber auch mit Venturidüsen, Pumpen, Gebläse und Saugern erzeugt werden. Das Vakuum wird über ein oder mehrere Schläuche oder durch im Inneren der Maschine verlaufende Kanäle dem Schleifgerät 1 zugeführt und über den Vakuumkanal 5 zur Schleifmittelseite des Schleiftellers 2 geleitet. Durch das Vakuum wird bei am Schleifteller 2 anliegendem Schleifmaterial 5 eine Sogwirkung ausgebildet, die das Schleifmaterial 5 an den Schleifteller 2 saugt. Das Schleifmaterial 5 haftet durch die Sogwirkung am Schleifteller 2, wobei der Schleifteller 2 aus einem Material besteht, welches eine möglichst hohe Haftreibung zwischen Schleifteller 2 und Schleifmaterial 5 gewährleistet. Dadurch wird ein Verschieben des Schleifmaterials 5 auf dem Schleifteller 2 verhindert und die sichere Bearbeitung der Werkstücke ermöglicht. Der Schleifteller 2 besteht aus einem Oberteil 2.1 und einem Unterteil 2.2. Für das aus einem festen Trägermaterial bestehende Oberteil 2.1 wird vorzugsweise Kunststoff oder Metall verwendet, während das Unterteil 2.2 aus einem flexiblen Material, beispielsweise aus Neopren besteht. Es ist auch möglich, dass der Schleifteller 2 an seiner Unterseite, an der das Schleifmittel 5 anliegt, radiale kurze Schlitze aufweist, die mit der zentralen der Austrittsöffnung des Vakuumkanals verbunden sind und eine verbesserte Anlage des Schleifmittels 5 bewirken. Die Verwendung von elastischem Kunststoffmaterial für den Schleifteller 2 ermöglicht die Bearbeitung gekrümmter Werkstücke. Besonders vorteilhaft ist dabei, dass die erfindungsgemäße Ausführung auch für kleine Durchmesser und an Einhandschleifgeräten verwendbar ist. FIG. 2 shows an enlarged schematic sectional view of the grinding disk 2 contained in FIG. 1 along the section line A-A '. Through the sanding pad 2, perpendicular to the sanding plane 8, runs the vacuum channel 4. The abrasive material 5 is fixed by means of vacuum on the underside of the sanding pad 2. The threaded piece 6 connects the sanding pad 2 with the drive shaft 3 shown in Figure 1. The vacuum is preferably generated by means of ejectors, not shown here. It can also be produced with venturi nozzles, pumps, blowers and suckers. The vacuum is supplied to the grinder 1 via one or more hoses or through channels running inside the machine and directed via the vacuum channel 5 to the abrasive side of the sanding plate 2. As a result of the vacuum, a suction effect is created when the abrasive material 5 abuts against the sanding pad 2, and this is the suction effect Abrasive material 5 sucks on the sanding pad 2. The abrasive material 5 adheres by the suction effect on the sanding pad 2, wherein the sanding pad 2 consists of a material which ensures the highest possible static friction between sanding pad 2 and 5 abrasive material. As a result, a displacement of the abrasive material 5 is prevented on the sanding plate 2 and allows the safe processing of the workpieces. The sanding pad 2 consists of an upper part 2.1 and a lower part 2.2. Plastic or metal is preferably used for the upper part 2.1 consisting of a solid carrier material, while the lower part 2.2 consists of a flexible material, for example neoprene. It is also possible that the sanding pad 2 has on its underside, against which the abrasive 5, radial short slots which are connected to the central of the outlet opening of the vacuum channel and effect an improved contact of the abrasive 5. The use of elastic plastic material for the sanding pad 2 allows the machining of curved workpieces. It is particularly advantageous that the design according to the invention can also be used for small diameters and single-handed grinders.

Figur 3 zeigt eine Ausführung, bei der in das Unterteil 2.2 des Schleiftellers 2 eine Einfräsung 2.2.1 eingearbeitet ist. Die Einfräsung 2.2.1 ist als umlaufende Nut an der Mantelfläche des Unterteils 2.2 angebracht. An der Unterseite des Unterteils 2.2, an der das Schleifmittel 5 angesaugt wird, ist eine stabile Scheibe 2.3 befestigt. Diese Gestaltung ermöglicht trotz fester/steifer Unterlage eine flexible Bearbeitung der Oberfläche, z.B. an Radien bzw. in Vertiefungen, bei gleichzeitiger stabiler Anlage am Schleifteller. Figure 3 shows an embodiment in which in the lower part 2.2 of the grinding plate 2, a milled recess is 2.2.1 incorporated. The milled recess 2.2.1 is mounted as a circumferential groove on the lateral surface of the lower part 2.2. At the bottom of the lower part 2.2, at which the abrasive 5 is sucked in, a stable disc 2.3 is attached. This design allows, despite a solid / rigid base, a flexible machining of the surface, for example at radii or in depressions, while at the same time stable contact with the sanding pad.

Figur 4 zeigt eine Ausführungsform für die Gestaltung eines flexiblen Schleifmaterials 5. Das Schleifmaterial 5 ist als rundes Blättchen aus Papier mit darauf befestigten Schleifkörpern ausgeführt. Um die zur Bearbeitung von gekrümmten Flächen erforderliche Flexibilität des Schleifmittels zu erhöhen, sind um das Zentrum, in dem das Blättchen an den Schleifteller 2 angesaugt wird, Durchbrüche angebracht. Im dargestellten Beispiel sind hierzu kreisförmig Schlitze 5.1 ... 5.4 eingestanzt. Es ist auch möglich, dass Einschnitte oder Einstanzungen verschiedener Formen angebracht sind. Neben der besseren Bearbeitungsmöglichkeit gekrümmter Flächen ergibt sich dadurch auch eine verbesserte Haftung des Papiers am Schleifteller 2. Figure 4 shows an embodiment for the design of a flexible abrasive material 5. The abrasive material 5 is designed as a round paper sheet with abrasive bodies mounted thereon. In order to increase the flexibility of the abrasive required to machine curved surfaces, apertures are made around the center where the leaflet is sucked against the sanding pad 2. In the example shown, circular slits 5.1... 5.4 are stamped for this purpose. It is also possible that incisions or stampings of different shapes are appropriate. In addition to the better processing possibility of curved surfaces, this also results in improved adhesion of the paper to the sanding pad. 2

Aus Figur 5 ist eine Anordnung ersichtlich, bei der der Schleifteller 2 in einer Zusatzeinrichtung 9 angebracht ist. Die Zusatzeinrichtung 9 ist an einer handelsüblichen Handschleifmaschine befestigt. Der Vakuumkanal 4 ist über einen Schlauchanschluss mit einer Vakuumpumpe verbunden. Bei der dargestellten Ausführung wird der Schleifteller 2 über einen Riemenantrieb 10 von der Schleifscheibe 11 einer Handschleifmaschine angetrieben. Diese Ausführung ermöglicht ein einfaches und kostengünstiges Anbringen der pneumatischen Anordnung an vorhandene Geräte. FIG. 5 shows an arrangement in which the sanding pad 2 is mounted in an additional device 9. The attachment 9 is attached to a commercial hand grinder. The vacuum channel 4 is connected via a hose connection with a vacuum pump. In the illustrated embodiment, the sanding pad 2 is driven by a belt drive 10 from the grinding wheel 11 of a hand grinder. This design allows for easy and inexpensive attachment of the pneumatic assembly to existing equipment.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Schleifgerätsharpener
22
Schleifteller
2.1 Oberteil des Schleiftellers
2.2 Unterteil des Schleiftellers
2.2.1 Einfräsung
2.3 Scheibesanding pad
2.1 Upper part of the sanding plate
2.2 Lower part of the sanding plate
2.2.1 Milling
2.3 disc
33
Antriebswelledrive shaft
44
Vakuumkanalvacuum channel
55
Schleifmaterialabrasive material
66
Gewindestückthreaded piece
77
Antriebseinheitdrive unit
88th
Schleifebenegrinding plane
99
Zusatzeinrichtungaccessory
1010
Riemenantriebbelt drive
1111
Schleifscheibegrinding wheel

Claims (5)

Schleifteller für ein Schleifgerät (1) der eine Aufnahme aufweist, an der Schleifmaterial (5) mittels Saugwirkung befestigt wird, wobei im Schleifteller (2) ein Kanal (4) zur Befestigung des Schleifmaterials (5) mittels Vakuum senkrecht zur Schleifebene (8) angeordnet ist, welcher sich im zentralen Bereich des Schleiftellers (2) befindet, dadurch gekennzeichnet, dass das Schleifmaterial (5) aus einem flexiblen Schleifmaterial besteht, der Kanal (4) durch den Flächenmittelpunkt der Berührungsfläche des Schleiftellers (2) mit dem Schleifmittel (5) verläuft und der Schleifteller (2) aus einem starren Oberteil (2.1) und einem Unterteil (2.2) aus flexiblen Material besteht.Sanding plate for a grinding device (1) having a receptacle, is attached to the abrasive material (5) by suction, wherein in the sanding pad (2) a channel (4) for fixing the abrasive material (5) by means of vacuum perpendicular to the grinding plane (8) which is located in the central region of the sanding pad (2), characterized in that the abrasive material (5) consists of a flexible abrasive material, the channel (4) through the center of area of the contact surface of the sanding pad (2) with the abrasive (5) runs and the sanding plate (2) consists of a rigid upper part (2.1) and a lower part (2.2) made of flexible material. Schleifteller nach Anspruch 1, dadurch gekennzeichnet, dass sich im Unterteil (2.2) des Schleiftellers (2) eine umlaufende Einfräsung (2.2.1) befindet und an der Unterseite des Unterteils (2.2) eine stabile Scheibe (2.3) befestigt ist.Sanding pad according to claim 1, characterized in that in the lower part (2.2) of the sanding plate (2) has a circumferential milling (2.2.1) and on the underside of the lower part (2.2) a stable disc (2.3) is attached. Schleifteller nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schleifteller (2) eine Grundfläche aufweist, die der Arbeitsfläche von Rotations-, Exzenter-, Linear- oder Schwingschleifer entspricht und als Schleifmaterial (5) ein mit Schleifkorn beschichtetes Trägermaterial verwendet wird.Sanding pad according to claim 1 or 2, characterized in that the sanding pad (2) has a base surface which corresponds to the working surface of rotational, eccentric, linear or orbital sander and as abrasive material (5) is coated with an abrasive grain carrier material is used. Schleifteller nach Anspruch 3, dadurch gekennzeichnet, dass das Schleifmaterial (5) als rundes Blättchen aus Papier mit darauf befestigten Schleifkörpern ausgeführt ist, welches Durchbrüche (5.1 ... 5.4) aufweist, die außerhalb des zentralen Bereichs angeordnet sind.Sanding pad according to claim 3, characterized in that the abrasive material (5) is designed as a round paper sheet with abrasive bodies mounted thereon, which has openings (5.1 ... 5.4), which are arranged outside the central area. Schleifteller nach einem der vorhergehende Ansprüche, dadurch gekennzeichnet, dass der Schleifteller (2) an einer Zusatzeinrichtung angeordnet ist, die mit einer Handschleifmaschine verbunden ist und von dieser angetrieben wird.Sanding pad according to one of the preceding claims, characterized in that the sanding pad (2) is arranged on an additional device, which is connected to a hand grinder and is driven by this.
EP07117626A 2006-10-02 2007-10-01 Grinding plate for vacuum fixation of grinding material Active EP1908554B1 (en)

Applications Claiming Priority (1)

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DE102006047007A DE102006047007A1 (en) 2006-10-02 2006-10-02 Disc grinder grinding plate, has channel for fixture of grinding material by vacuum normal to grinding plane

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EP1908554A1 true EP1908554A1 (en) 2008-04-09
EP1908554B1 EP1908554B1 (en) 2009-04-22

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AT (1) ATE429308T1 (en)
DE (2) DE102006047007A1 (en)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900005874A1 (en) * 2019-04-16 2020-10-16 Premier S R L IMPROVED ABRASIVE GROUP FOR CERAMIC AND / OR STONE MATERIALS
US20220274225A1 (en) * 2019-07-17 2022-09-01 Rud. Starcke Gmbh & Co. Kg Grinding device
EP4405133A4 (en) * 2021-09-21 2025-09-10 Buff And Shine Mfg Inc POLISHING PAD

Citations (4)

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Publication number Priority date Publication date Assignee Title
DD225093A1 (en) * 1984-07-02 1985-07-24 Sachsenring Automobilwerke GRINDING PLATE FOR RECEIVING FLEXIBLE GRINDING BLADES BY MEANS OF SUCTION
EP0319729A2 (en) * 1987-12-11 1989-06-14 Gerd Braasch Sanding device for treating surfaces, especially wooden surfaces
DE29809710U1 (en) * 1998-05-29 1998-09-03 Müller, Heinrich, 57635 Wölmersen Machine processing device
WO1999067057A1 (en) * 1998-06-23 1999-12-29 Ekamant Ab Pneumatic hand grinding tool

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Publication number Priority date Publication date Assignee Title
US1765808A (en) * 1926-02-23 1930-06-24 Carborundum Co Surfacing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD225093A1 (en) * 1984-07-02 1985-07-24 Sachsenring Automobilwerke GRINDING PLATE FOR RECEIVING FLEXIBLE GRINDING BLADES BY MEANS OF SUCTION
EP0319729A2 (en) * 1987-12-11 1989-06-14 Gerd Braasch Sanding device for treating surfaces, especially wooden surfaces
DE29809710U1 (en) * 1998-05-29 1998-09-03 Müller, Heinrich, 57635 Wölmersen Machine processing device
WO1999067057A1 (en) * 1998-06-23 1999-12-29 Ekamant Ab Pneumatic hand grinding tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900005874A1 (en) * 2019-04-16 2020-10-16 Premier S R L IMPROVED ABRASIVE GROUP FOR CERAMIC AND / OR STONE MATERIALS
US20220274225A1 (en) * 2019-07-17 2022-09-01 Rud. Starcke Gmbh & Co. Kg Grinding device
EP4405133A4 (en) * 2021-09-21 2025-09-10 Buff And Shine Mfg Inc POLISHING PAD

Also Published As

Publication number Publication date
EP1908554B1 (en) 2009-04-22
ES2326346T3 (en) 2009-10-07
DE502007000638D1 (en) 2009-06-04
DE102006047007A1 (en) 2008-04-03
ATE429308T1 (en) 2009-05-15

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