EP0781629B1 - Directly or indirectly adaptable grinding body for a machine or a manually operable grinding device holder, as well as a suitable adapter for same - Google Patents
Directly or indirectly adaptable grinding body for a machine or a manually operable grinding device holder, as well as a suitable adapter for same Download PDFInfo
- Publication number
- EP0781629B1 EP0781629B1 EP96106587A EP96106587A EP0781629B1 EP 0781629 B1 EP0781629 B1 EP 0781629B1 EP 96106587 A EP96106587 A EP 96106587A EP 96106587 A EP96106587 A EP 96106587A EP 0781629 B1 EP0781629 B1 EP 0781629B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- grinding
- abrasive
- perforation
- grinding body
- 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
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Classifications
-
- 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
Definitions
- the invention relates to an abrasive body according to the Preamble of claim 1, a combination of one Abrasive body and an abrasive holder and one for appropriate application on a machine grinding plate or sanding plate or on an actuatable Abrasive holder with or without suction, suitable adapter.
- Abrasive bodies of the type mentioned, in particular machine-adaptable grinding wheels are in the most varied Embodiments, in terms of structure and known geometric shape.
- circular grinding wheels commercially available with a velor on the back for attaching to the sanding plate.
- the Grinding wheels also have, for example, six or eight holes arranged in a circle by several Millimeters in diameter with the corresponding Drilled hole in the sanding plate covered must be removed in order to extract the grinding dust enable (catalog Bosch DIY program 1994/95, P. 22).
- abrasives are in the form of sanding grids known (US 4 937 984, US 5 007 206, US 5 503 627).
- sanding grids are difficult to attach because they need to be excited. You only have one relative short service life.
- the present invention is therefore based on the object based on a grinding wheel as well as corresponding Adaption means for machines or manual tools too create the disadvantage of the state of the described Counter technology effectively and at the same time continuous, regular and satisfactory Removal of the grinding dust ensures which both can be used individually or in combination are.
- this object is achieved by a grinding wheel according to the characterizing part of claim 1, by a Combination of an abrasive wheel and an abrasive holder according to claim 12 or by an adapter solved according to claim 14.
- both the grinding wheel and also the one used for some work-related fastenings Adapter a network of breakthroughs that both among themselves, i.e. communicate with each other, as well as, for example, with the suction device Machine in communication so that both the exhaust air as well as the particle flow is effective and the dust can be removed.
- the present invention is characterized from that by means of this on the one hand a machine adaptable Abrasive body is formed, the least consists of a layer containing the abrasive and directly or indirectly using an adapter on the Sanding disc or the grinding plate of the machine can be attached to work and where means are provided with the suction of the Sanding plates or the grinding plate of the machine can cooperate, being the essence of the present Invention is that at least the grinding wheel has a perforation that is approximately even over spread the entire surface of the grinding wheel or is at least partially arranged and at least that Abrasive layer penetrates, the Distance of the individual who form the perforation Breakthroughs to each other and to the Suction devices of the grinding plate or Sanding plate are arranged so that an almost jam-free Transport of the grinding dust is effected.
- this grinding wheel is characterized by that it consists of at least one containing the abrasive Layer exists and that directly or with the help of a Adapters indirectly on an abrasive holder can be fastened to suit the work and also means are provided with the suction of the Abrasive holder can interact.
- This grinding wheel is characterized in that at least the grinding wheel has a perforation, which are approximately even over the entire surface of the Distributed abrasive or at least partially arranged and at least the one containing the abrasive Layer penetrates, the distance of each, the Perforations forming each other and opposite the suction devices of the abrasive holder are arranged so that an almost dustless transport of the grinding dust is caused.
- the invention provides a grinding wheel created the one without suction devices satisfactory removal of the grinding dust causes. It was recognized that the presence of the Perforation of the sanding dust solely by the contact pressure away from the grinding surface and in zones and layers is pushed behind the grinding plane. So is a Clogging of the abrasive grains almost avoided.
- the adapter also has one with the perforation the interacting perforation of the grinding wheel.
- a first particularly preferred embodiment of the present invention provides an abrasive body which consists of the layer containing the abrasive and / or the layer carrying or embedding the abrasive and / or the Velcro adaptation layer, which are penetrated together by the perforation.
- An auxiliary functional layer can be arranged between the layer containing the abrasive or its carrier or embedding layer and the Velcro adaptation layer.
- Such auxiliary function layers can be formed as elastic adaptation layers or compensation layers, for example made of foam.
- these auxiliary function layers can also have a temperature blocking effect and be suitable for both wet and dry grinding. All the layers forming the grinding wheel are preferably penetrated by a common perforation.
- the auxiliary functional layer consists of a foam-like structure, it does not provide any perforation, but rather forms communication and transport channels itself through its foam-like structure, between the perforations of the perforation of the adjacent layer and the suction devices of the grinding plate or the tools used.
- the perforation as well as the communication channels can flow through gas and particles.
- the shapes of the perforations forming the perforation can be circular, angular and oval. You can also through slot-like openings, which are linear or are aligned in an arc. This applies to the perforation of the grinding wheel as well also for the perforation of the adapter. Both the Abrasive wheel as well as the adapter can be disc-shaped circular, angular, i.e. rectangular or triangular or also be star-shaped.
- the abrasive backing consists of paper, tissue or a fleece.
- the present invention also provides an adapter ready to work on machine or Abrasive holder arrangement of a conventional as also an abrasive wheel according to claims 1 to 11 is suitable and is characterized in that the Velcro adapter layer adapter, one Foam particle layer and a velor layer, the one pointing to the grinding wheel Velcro adaptation layer penetrated by the perforation is.
- the perforation as such, both in the grinding wheel as well as in the adapter according to the invention, where the layer as such gas or particle flow impermeable.
- the property of Abrasive body in terms of structure and layers, with Exception of the grinding layer, also apply to the Adapters.
- FIGS. 4 and 5 show a grinding plate 5, the with Suction devices 7, here individual radially arranged Holes. About these Suction devices 7 is conventionally the removed grinding dust is fed into a collecting bag, the actual suction device on or in Grinder is integrated. This representation is representative of a grinding plate or one other abrasive holder 6 with or without Suction devices.
- the abrasives for example circular grinding wheels, also with Provide openings that are congruent to the Suction devices 7 are to be applied.
- the grinding plate 5 has a Velcro adaptation surface 17.
- Both the latter layer and the The perforation surface is fixed on a support plate 19 applied which a connecting element 20 for Owns the machine.
- Both the Velcro adaptation surface 17 and also the soft layer 18 and the support plate 19 of the Sanding discs are in shape from the suction devices 7 penetrated by perforations or bores.
- a grinding wheel 1 according to FIG. 1 is now used to 3 and an adapter according to Figures 5 to 7 created.
- the general idea of the invention is expressed for example in Figures 1 to 3.
- the grinding wheel 1 is provided with a perforation 8, which is distributed over the entire area, for example.
- the abrasive body 1 can be made from a wide variety Layers are formed. This depends on respective grinding process, quality of the ground Layer and the material to be found. At least it is according to the invention the layer 3 carrying the abrasive 2 of the perforations 9 forming the perforation 8 enforced.
- Openings 9 of the perforation 8 to one another and opposite the suction devices 7 of the grinding plate 5 is an almost dust-free transport of the grinding dust the suction devices 7 causes.
- the inventive grinding wheel 1, from which Abrasive 2 layer 3 and the Abrasive 2 or the abrasive 2 embedding layer 10 and a Velcro adaptation layer 11 formed, all penetrated by the perforation 8 are.
- this can also be an auxiliary functional layer 12 arranged between the layer 3 containing the abrasive 2 or its carrier or embedding layer 10 and the Velcro adaptation layer 11, which can be present, for example, as a foam body for the purpose of elastic adaptation and compensation, but also as a temperature barrier layer.
- This can also be produced for wet or dry grinding designs.
- all the layers forming the grinding body 1 can be penetrated by a common perforation or only individual layers can be penetrated by this.
- the auxiliary functional layer 12 has no perforation 8, but rather forms communication channels 13 between the openings 9 of the perforation 8 and the suction devices 7 of the grinding plate 5 due to its own foam-like structure. It goes without saying that both the perforation 8 and the communication channels 13 can flow through both gas and particles. The same also applies to the construction of the adapter according to FIGS. 6 to 7.
- the adapter 4 also provides the perforation 8 here, which, if the adapter 4 consists of a Velcro adaptation layer 14, only penetrates this if a foam particle layer 15 is also shown, as shown here a subsequent velor layer 16, which can itself be flowed through.
- FIG. 8 shows a perforation 8 which is formed from circular openings.
- FIG. 9 shows star-shaped openings 9 and FIG. 10 polygonal openings 9. These openings can be symmetrical like the square, rectangular or triangular openings according to FIGS. 11 to 13, or they can be of an asymmetrical shape.
- FIG. 14 shows oval openings 9. The choice of the geometric shape is determined by the respective application. So slot-like openings 9 in a linear (FIG. 15) or arc-shaped alignment (FIG. 16) are also possible.
- the essence of the invention is determined, inter alia, by the perforations in the grinding wheel and in the adapter or their layer structure. It was thus recognized that both the grinding wheel and the adapter can be used separately or in combination with one another.
- the adapter according to the invention can even be used with conventional Abrasive bodies having perforations can be used in the sense of the inventive concept.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Die Erfindung betrifft einen Schleifkörper nach dem
Oberbegriff des Anspruchs 1, eine Kombination aus einem
Schleifkörper und einem Schleifmittelhalter sowie einen
zum arbeitsgerechten Aufbringen auf einen Maschinenschleifteller
oder Schleifplatte bzw. auf einen betätigbaren
Schleifmittelhalter mit oder ohne Absaugung,
geeigneten Adapter.The invention relates to an abrasive body according to the
Preamble of
Schleifkörper der eingangs genannten Art, insbesondere maschinenadaptierbare Schleifkörper, sind in den vielfältigsten Ausführungsformen, hinsichtlich Aufbau und geometrischer Form bekannt. Beispielsweise sind für Exzenterschleifer geeignete, kreisrunde Schleifscheiben im Handel erhältlich, die auf ihrer Rückseite ein Velours zum Ankletten an die Schleifplatte aufweisen. Die Schleifscheiben weisen ferner beispielsweise sechs oder acht auf einem Kreis angeordnete Löcher von mehreren Millimetern Durchmesser auf, die mit entsprechender Bohrung in der Schleifplatte zur Überdeckung gebracht werden müssen, um ein Absaugen des Schleifstaubes zu ermöglichen (Katalog Bosch Heimwerker-Programm 1994/95, S. 22).Abrasive bodies of the type mentioned, in particular machine-adaptable grinding wheels are in the most varied Embodiments, in terms of structure and known geometric shape. For example, for orbital sanders suitable, circular grinding wheels commercially available with a velor on the back for attaching to the sanding plate. The Grinding wheels also have, for example, six or eight holes arranged in a circle by several Millimeters in diameter with the corresponding Drilled hole in the sanding plate covered must be removed in order to extract the grinding dust enable (catalog Bosch DIY program 1994/95, P. 22).
Andere Schleifmittel sind in Form von Schleifgittern bekannt (US 4 937 984, US 5 007 206, US 5 503 627). Schleifgitter sind jedoch schwierig zu befestigen, weil sie gespannt werden müssen. Sie haben nur eine relativ geringe Standzeit. Other abrasives are in the form of sanding grids known (US 4 937 984, US 5 007 206, US 5 503 627). However, sanding grids are difficult to attach because they need to be excited. You only have one relative short service life.
Um ein einwandfreies Schleifergebnis zu erzielen, bedarf es des kontinuierlichen Abtransports des Schleifstaubes. Ist ein solcher Abtransport des Schleifstaubes nicht vorhanden oder wird ein solcher Abtransport nur unzureichend vorgenommen, führt dies zum Zusetzen der Schleifscheibe, so daß z.B. das einzelne Schleifkorn nicht mehr wirksam werden kann. Die Folge hieraus ist ein nicht zufriedenstellendes Schleifergebnis und eine beträchtlich verkürzte Standzeit des Schleifkörpers.To achieve a perfect grinding result, the continuous removal of the Grinding dust. Is such a removal of the Grinding dust does not exist or becomes such This is caused by inadequate removal for clogging the grinding wheel so that e.g. the individual Abrasive grain can no longer take effect. The The consequence of this is an unsatisfactory grinding result and a considerably reduced service life of the Grinding wheel.
Die Konsequenz hieraus war beispielsweise die Anordnung von Absaugeinrichtungen im Schleifteller oder der Schleifplatte der Maschine, wobei der Schleifkörper mit Mitteln versehen wurde, so daß die Absaugung theoretisch dadurch erfüllt werden sollte, in dem sich im Schleifkörper befindliche Lochungen mit den Absaugkanälen des Schleiftellers oder der Platte überragten. Diese Maßnahmen gelten auch für manuell nutzbare Schleifmittelhalter, die mit Absaugeinrichtungen versehen sein können. The consequence of this, for example, was the arrangement of suction devices in the grinding plate or Grinding plate of the machine, the grinding wheel with Means was provided, so that the suction theoretically should be fulfilled in which the Perforated holes with the suction channels of the grinding plate or the plate. This Measures also apply to manually usable abrasive holders, which are provided with suction devices can.
Nun ist es aber, um eine grundlegende Funktion
sicherzustellen, erforderlich, daß der Anwender den
Schleifkörper mit seinen Durchbrechungen deckungsgleich zu
den Ansaugkanälen des Schleiftellers bzw. der
Schleifplatte oder den weiteren Werkzeughilfsmittel
aufbringt, worauf aber erfahrungsgemäß bei den meisten
Anwendern nicht geachtet wird. Noch schwieriger erweist
sich die Erfüllung dieser Voraussetzung, wenn zwischen
Schleifkörper und Schleifteller bzw. Schleifplatte oder
Schleifklotz oder ähnlichem ein Adapterteil zuzuordnen
ist. In der Praxis ist jedoch auch bei vorschriftsmäßiger
Übereinanderanordnung der adaptierten Teile kein
zufriedenstellender Abtransport des Schleifstaubes zu
erwarten. Der Schleifstaub wird nämlich nicht dort
aufgesaugt oder abtransportiert, wo er entsteht, sondern
dort wo er durch die Rotation oder Oszillationsbewegung
des Schleifkörpers unter die Ansauglochungen transportiert
wird.
Zwischenzeitlich wird der Schleifstaub sowohl auf dem
Werkstück verrieben als auch in die Schleiffläche gepreßt,
wo er zum Zusetzen der Schleifmittel führt.
Dies führt letztendlich zu einem qualitativ nicht
zufriedenstellenden Schleifergebnis.However, in order to ensure a basic function, it is necessary for the user to apply the grinding body with its openings congruent to the suction channels of the grinding plate or the grinding plate or the other tool aids, but experience has shown that most users do not pay attention to this. This proves to be even more difficult if an adapter part is to be assigned between the grinding body and the grinding plate or grinding plate or grinding block or the like. In practice, however, a satisfactory removal of the grinding dust is not to be expected even when the adapted parts are arranged one above the other in accordance with the regulations. This is because the grinding dust is not sucked up or removed where it is created, but where it is transported under the suction holes by the rotation or oscillation movement of the grinding wheel.
In the meantime, the grinding dust is both ground on the workpiece and pressed into the grinding surface, where it leads to clogging of the abrasives.
This ultimately leads to an unsatisfactory grinding result.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Schleifkörper sowie entsprechende Adaptionsmittel für Maschinen oder manuelle Werkzeuge zu schaffen, der dem geschilderten Nachteil des Standes der Technik wirkungsvoll entgegentritt und dabei einen kontinuierlichen, regelmäßigen und zufriedenstellenden Abtransport des Schleifstaubes sicherstellt, welche sowohl einzeln als auch im Kombination miteinander verwendbar sind. The present invention is therefore based on the object based on a grinding wheel as well as corresponding Adaption means for machines or manual tools too create the disadvantage of the state of the described Counter technology effectively and at the same time continuous, regular and satisfactory Removal of the grinding dust ensures which both can be used individually or in combination are.
Diese Aufgabe wird erfindungsgemäß durch einen Schleifkörper
nach dem Kennzeichen des Anspruchs 1, durch eine
Kombination aus einem Schleifkörper und einem Schleifmittelhalter
nach Anspruch 12 bzw. durch einen Adapter
nach Anspruch 14 gelöst.According to the invention, this object is achieved by a grinding wheel
according to the characterizing part of
Besonders bevorzugte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Particularly preferred developments of the invention are characterized in the subclaims.
Erfindungsgemäß weist nun sowohl der Schleifkörper als auch der für manche arbeitsgerechte Befestigungen verwendete Adapter ein Netz von Durchbrechungen auf, die sowohl untereinander, d.h. miteinander kommunizieren, als auch beispielsweise mit der Absaugeinrichtung der Maschine in Verbindung stehen, so daß sowohl die Absaugluft als auch der Partikelstrom wirksam wird und der Staub abgefördert werden kann.According to the invention, both the grinding wheel and also the one used for some work-related fastenings Adapter a network of breakthroughs that both among themselves, i.e. communicate with each other, as well as, for example, with the suction device Machine in communication so that both the exhaust air as well as the particle flow is effective and the dust can be removed.
Je nach dem, wie der Aufbau des Schleifkörpers gewählt ist, ist es ausreichend, die Perforation in einer Schicht des Schleifkörpers anzuordnen, wenn die darunterliegende Schicht gas- und partikeldurchlässig ist. Bei wiederum anderen Schleifkörpern, mit anders geartetem Schichtaufbau kann es sinnvoll sein, die Perforation nicht durch eine, sondern durch mehrere oder alle Schichten, durchdringen zu lassen.Depending on how the structure of the grinding wheel is chosen is sufficient, the perforation in one Arrange layer of the grinding wheel if the underlying one Layer is gas and particle permeable. With other grinding wheels, with a different type Layer structure, it may be useful to perforate not by one, but by several or all Layers to let penetrate.
Gleiches gilt für den Aufbau des Adapters.The same applies to the construction of the adapter.
Daher zeichnet sich die vorliegende Erfindung dadurch aus, daß mittels dieser einerseits ein maschinenadaptierbarer Schleifkörper gebildet ist, der mindestens aus einer das Schleifmittel aufweisenden Schicht besteht und der direkt oder mit Hilfe eines Adapters indirekt auf den Schleifteller oder die Schleifplatte der Maschine arbeitsgerecht befestigbar ist und bei denen Mittel vorgesehen sind, die mit Absaugeinrichtungen des Schleiftellers oder der Schleifplatte der Maschine zusammenwirken können, wobei das Wesen der vorliegenden Erfindung darin liegt, daß mindestens der Schleifkörper eine Perforation aufweist, die annähernd gleichmäßig über die gesamte Fläche des Schleifkörpers verteilt oder zumindest partiell angeordnet ist und 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 angeordnet sind, daß ein nahezu stauloser Transport des Schleifstaubes bewirkt ist.Therefore, the present invention is characterized from that by means of this on the one hand a machine adaptable Abrasive body is formed, the least consists of a layer containing the abrasive and directly or indirectly using an adapter on the Sanding disc or the grinding plate of the machine can be attached to work and where means are provided with the suction of the Sanding plates or the grinding plate of the machine can cooperate, being the essence of the present Invention is that at least the grinding wheel has a perforation that is approximately even over spread the entire surface of the grinding wheel or is at least partially arranged and at least that Abrasive layer penetrates, the Distance of the individual who form the perforation Breakthroughs to each other and to the Suction devices of the grinding plate or Sanding plate are arranged so that an almost jam-free Transport of the grinding dust is effected.
Andererseits wird durch die vorliegende Erfindung ein Schleifkörper bereitgestellt, der auf einem manuell betätigbaren Schleifmittelhalter aufbringbar ist, welcher ebenfalls mit Absaugeinrichtungen bestückt ist und an eine externe Absauganlage gekoppelt wird.On the other hand, by the present invention Grinding wheel provided on a manually actuatable abrasive holder can be applied, which is also equipped with suction devices and to one external suction system is coupled.
Erfindungsgemäß zeichnet sich dieser Schleifkörper dadurch aus, daß er mindestens aus einer das Schleifmittel aufweisenden Schicht besteht und der direkt oder mit Hilfe eines Adapters indirekt auf einen Schleifmittelhalter arbeitsgerecht befestigbar ist und bei dem ferner Mittel vorgesehen sind, die mit Absaugeinrichtungen des Schleifmittelhalters zusammenwirken können. Das Wesen dieses Schleifkörpers ist dadurch gekennzeichnet, daß mindestens der Schleifkörper eine Perforation aufweist, die annähernd gleichmäßig über die gesamte Fläche des Schleifkörpers verteilt oder Zumindest partiell angeordnet ist und zumindest die das Schleifmittel aufweisende Schicht durchdringt, wobei der Abstand der einzelnen, die Perforation bildenden Durchbrechungen zueinander und gegenüber den Absaugeinrichtungen des Schleifmittelhalters so angeordnet sind, daß ein nahezu staubloser Transport des Schleifstaubes bewirkt ist.According to the invention, this grinding wheel is characterized by that it consists of at least one containing the abrasive Layer exists and that directly or with the help of a Adapters indirectly on an abrasive holder can be fastened to suit the work and also means are provided with the suction of the Abrasive holder can interact. The essence this grinding wheel is characterized in that at least the grinding wheel has a perforation, which are approximately even over the entire surface of the Distributed abrasive or at least partially arranged and at least the one containing the abrasive Layer penetrates, the distance of each, the Perforations forming each other and opposite the suction devices of the abrasive holder are arranged so that an almost dustless transport of the grinding dust is caused.
Ferner wird durch die Erfindung ein Schleifkörper geschaffen, der ohne Absaugeinrichtungen einen zufriedenstellenden Abtransport des Schleifstaubes bewirkt. Es wurd erkannt, daß durch das Vorhandensein der Perforation der Schleifstaub alleine durch den Anpreßdruck von der Schleiffläche entfernt und in Zonen und Schichten hinter der Schleifebene gedrängt wird. Somit ist ein Zusetzen der Schleifkörner nahezu vermieden.Furthermore, the invention provides a grinding wheel created the one without suction devices satisfactory removal of the grinding dust causes. It was recognized that the presence of the Perforation of the sanding dust solely by the contact pressure away from the grinding surface and in zones and layers is pushed behind the grinding plane. So is a Clogging of the abrasive grains almost avoided.
Bei einer besonders bevorzugten Ausführungsform ist vorgesehen, daß auch der Adapter eine mit der Perforation des Schleifkörpers zusammenwirkende Perforation aufweist.In a particularly preferred embodiment provided that the adapter also has one with the perforation the interacting perforation of the grinding wheel.
Eine erste besonders bevorzugte Ausführungsvorm der
vorliegenden Erfindung sieht einen Schleifkörper vor, der
aus der das Schleifmittel aufweisenden Schicht und/oder
der das Schleifmittel tragenden oder das Schleifmittel
einbettenden Schicht und/oder der Klettadaptionsschicht
besteht, die gemeinsam von der Perforation durchdrungen
sind.
Zwischen der das Schleifmittel aufweisenden Schicht oder
deren Träger oder Einbettungsschicht und der
Klettadaptionsschicht kann eine Hilfsfunktionsschicht
angeordnet sein. Solche Hilfsfunktionsschichten können als
elastische Anpassungsschichten oder Ausgleichsschichten,
beispielsweise aus Schaumstoff gebildet sein. Diese
Hilfsfunktionsschichten können aber auch eine
Temperatursperrwirkung besitzen und sowohl für den Naßals
auch für den Trockenschliff geeignet sein.
Bevorzugterweise sind alle den Schleifkörper bildenden
Schichten von einer gemeinsamen Perforierung durchsetzt.
Jedoch insbesondere, wenn die Hilfsfunktionschicht aus
einem schaumartigen Aufbau besteht, sieht diese keine
Perforation vor, sondern bildet selbst durch ihren
schaumartigen Aufbau Kommuniktions- und Transportkanäle,
zwischen den Durchbrechungen der Perforation der
benachbarten Schicht und den Absaugeinrichtungen des
Schleiftellers oder der verwendeten Werkzeuge. Die
Perforation als auch die Kommunikationskanäle sind dabei
gas- und partikeldurchströmbar.A first particularly preferred embodiment of the present invention provides an abrasive body which consists of the layer containing the abrasive and / or the layer carrying or embedding the abrasive and / or the Velcro adaptation layer, which are penetrated together by the perforation.
An auxiliary functional layer can be arranged between the layer containing the abrasive or its carrier or embedding layer and the Velcro adaptation layer. Such auxiliary function layers can be formed as elastic adaptation layers or compensation layers, for example made of foam. However, these auxiliary function layers can also have a temperature blocking effect and be suitable for both wet and dry grinding. All the layers forming the grinding wheel are preferably penetrated by a common perforation. However, especially if the auxiliary functional layer consists of a foam-like structure, it does not provide any perforation, but rather forms communication and transport channels itself through its foam-like structure, between the perforations of the perforation of the adjacent layer and the suction devices of the grinding plate or the tools used. The perforation as well as the communication channels can flow through gas and particles.
Die Formen der die Perforation bildenden Durchbrechungen können sowohl kreisförmig, eckig und oval sein. Sie können auch durch schlitzartige Durchbrechungen, welche linear oder bogenförmig ausgerichtet sind, gebildet werden. Dies gilt sowohl für die Perforation des Schleifkörpers, als auch für die Perforation des Adapters. Sowohl der Schleifkörper als auch der Adapter kann scheibenförmig kreisrund, eckig, d.h. rechteckig oder dreieckig oder auch sternförmig ausgebildet sein. Der Schleifmittelträger besteht aus Papier, Gewebe oder einem Vlies.The shapes of the perforations forming the perforation can be circular, angular and oval. You can also through slot-like openings, which are linear or are aligned in an arc. This applies to the perforation of the grinding wheel as well also for the perforation of the adapter. Both the Abrasive wheel as well as the adapter can be disc-shaped circular, angular, i.e. rectangular or triangular or also be star-shaped. The abrasive backing consists of paper, tissue or a fleece.
Die vorliegende Erfindung stellt auch einen Adapter
bereit, der zu arbeitsgerechten Maschinen- oder
Schleifmittelhalteranordnung eines konventionellen als
auch eines Schleifkörpers nach den Ansprüchen 1 bis 11
geeignet ist und kennzeichnet sich dadurch, daß der
Adapter aus einer Klettadaptionsschicht, einer
Schaumpartikelschicht und einer Veloursschicht besteht,
wobei die zum Schleifkörper hinweisende
Klettadaptionsschicht mit von der Perforation durchdrungen
ist. Die Perforation als solche, sowohl im Schleifkörper
als auch im Adapter ist erfindungsgemäß dort anzuordnen,
wo die Schicht als solche gas- oder
partikelstromundurchlässig ist. Die Eigenschaft des
Schleifkörpers hinsichtlich Aufbau und Schichten, mit
Ausnahme der Schleifschicht, gelten auch für die des
Adapters.The present invention also provides an adapter
ready to work on machine or
Abrasive holder arrangement of a conventional as
also an abrasive wheel according to
Anhand den beigefügten Zeichnungen, die besonders
bevorzugte Ausführungsbeispiele der Erfindung zeigen, wird
diese nun näher beschrieben.
Dabei zeigen:
Figur 1- eine Draufsicht auf eine erste Ausführungsvariante der vorliegenden Erfindung, hier eine mit Klettadaptionsfläche versehene Schleifscheibe
Figur 2- das in
Figur 1 mit A gekennzeichnete Detail in einer Vergrößerung; Figur 3- einen Schnitt entlang der in
Figur 2 angedeuteten Linie B-B in einer Vergrößerung; Figur 4- eine Seitenansicht eines Schleiftellers;
- Figur 5
- die Unterseite des Schleiftellers nach
Figur 4 aus der inFigur 4 angedeuteten Richtung C; - Figur 6
- einen Adapter in der Draufsicht auf die Klettadaptionsfläche;
Figur 7- einen Schnitt entlang der in Figur 6
angedeuteten Linie D-D, wobei der
geschnittene Adapter 4 nur in einem Teilbereich, und zwar in vergrößerter Darstellung gezeigt ist. Figuren 8 bis 16- verschiedene Varianten der Perforationsbildung.
Show:
- Figure 1
- a plan view of a first embodiment of the present invention, here a grinding wheel provided with Velcro adaptation surface
- Figure 2
- the detail marked with A in Figure 1 in an enlargement;
- Figure 3
- a section along the line BB indicated in Figure 2 in an enlargement;
- Figure 4
- a side view of a grinding plate;
- Figure 5
- the underside of the grinding plate according to Figure 4 from the direction C indicated in Figure 4;
- Figure 6
- an adapter in plan view of the Velcro adaptation surface;
- Figure 7
- a section along the line DD indicated in Figure 6, the
cut adapter 4 is shown only in a partial area, namely in an enlarged view. - Figures 8 to 16
- different types of perforation.
Zunächst wird auf die Figuren 4 und 5 Bezug genommen. Die
Figuren 4 und 5 zeigen einen Schleifteller 5, der mit
Absaugeinrichtungen 7, hier einzelne radial angeordnete
Bohrungen, ausgestattet ist. Über diese
Absaugeinrichtungen 7 wird herkömmlicherweise der
abgetragene Schleifstaub einem Auffangbeutel zugeführt,
wobei die eigentliche Saugeinrichtung am oder im
Schleifgerät integriert ist. Diese Darstellung ist
stellvertretend für eine Schleifplatte oder einen
sonstigen Schleifmittelhalter 6 mit oder ohne
Absaugeinrichtungen.First, reference is made to FIGS. 4 and 5. The
Figures 4 and 5 show a grinding plate 5, the with
Es gilt nun erfindungsgemäß die funktionsgerechte
Zuführung des Schleifstaubes zu diesen Absaugeinrichtungen
7 oder den gleichwertigen Abtransport sicherzustellen.
Herkömmlicherweise sind hierzu die Schleifmittel,
beispielsweise kreisrunde Schleifscheiben, ebenfalls mit
Durchbrechungen versehen, die deckungsgleich zu den
Absaugeinrichtungen 7 aufzubringen sind. Wie eingangs
bereits erwähnt, kann dieser Stand der Technik nicht
sicherstellen, daß das Schleifergebnis zufriedenstellend
ausfällt. Der Grund hierfür liegt im eigentlichen System.
Der Schleifteller 5 besitzt eine Klettadaptionsfläche 17.
Darüber befindet sich eine druck- und stoßausgleichende
weichere Schicht 18. Sowohl letztere Schicht als auch die
Perforationsfläche sind fest auf einem Tragteller 19
aufgebracht, welcher ein Verbindungselement 20 zur
Maschine besitzt. Sowohl die Klettadaptionsfläche 17 als
auch die weiche Schicht 18 und der Tragteller 19 des
Schleiftellers sind von den Absaugeinrichtungen 7 in Form
von Durchbrechungen oder Bohrungen durchsetzt.According to the invention, the functionally correct one now applies
Feeding the grinding dust to these
Wird nun der Schleifkörper 1 unsachgemäß auf den
Schleifteller 5 aufgebracht, d.h. wenn die herkömmlichen
mit den Absaugeinrichtungen 7 deckungsgleichen Bohrungen
der Schleifscheibe nicht exakt über die Absaugeinrichtung
7 positioniert werden, ist die Absaugung des
Schleifstaubes zunichte gemacht.
Aber auch dann, wenn die Schleifscheibe ordnungsgemäß
positioniert wird, ist eine kontinuierliche Absaugung aus
den bereits genannten Gründen nicht gewährleistet.If the
But even if the grinding wheel is properly positioned, continuous extraction is not guaranteed for the reasons already mentioned.
Erfindungsgemäß wird nun ein Schleifkörper 1 gemäß Figur 1
bis 3 sowie ein Adapter gemäß den Figuren 5 bis 7
geschaffen. Der allgemeine Erfindungsgedanke drückt sich
beispielsweise in den Figuren 1 bis 3 aus. Erfindungsgemäß
ist der Schleifkörper 1 mit einer Perforation 8 versehen,
die sich beispielsweise über die gesamte Fläche verteilt.
Der Schleifkörper 1 kann dabei aus verschiedensten
Schichten gebildet werden. Dies ist abhängig vom
jeweiligen Schleifverfahren, Güte der beschliffenen
Schicht und dem anzutreffenden Material. Zumindest ist
erfindungsgemäß die das Schleifmittel 2 tragende Schicht 3
von den die Perforation 8 bildenden Durchbrechungen 9
durchsetzt. Durch diese erfindungsgemäße Anordnung der
Durchbrechungen 9 der Perforation 8 zueinander sowie
gegenüber den Absaugeinrichtungen 7 des Schleiftellers 5
ist ein nahezu stauloser Transport des Schleifstaubes zu
den Absaugeinrichtungen 7 bewirkt. Beispielsweise ist der
erfindungsgemäße Schleifkörper 1, aus der das
Schleifmittel 2 aufweisenden Schicht 3 und der das
Schleifmittel 2 tragenden oder das Schleifmittel 2
einbettenden Schicht 10 und einer Klettadaptionsschicht 11
gebildet, die alle durch die Perforation 8 durchdrungen
sind.According to the invention, a
Es kommen also Schleifkörper für diese Erfindung in Frage,
bei denen der unterschiedlichste Schichtaufbau möglich
ist. Beispielsweise kann dies auch gemäß Figur 3a eine
zwischen der das Schleifmittel 2 aufweisenden Schicht 3
oder deren Träger oder Einbettungsschicht 10 und der
Klettadaptionsschicht 11 angeordnete Hilfsfunktionsschicht
12 sein, die beispielsweise als Schaumkörper zum Zwecke
der elastischen Anpassung und des Ausgleiches aber auch
als Temperatursperrschicht vorliegen kann. Diese ist
ebenfalls für Naß- oder Trockenschliffausführungen
herstellbar.
Wie zuvor dargelegt, können alle den Schleifkörper 1
bildenden Schichten von einer gemeinsamen Perforation
durchsetzt sein oder auch nur einzelne Schichten von
dieser durchsetzt werden.
Eine Ausführungsform der vorliegenden Erfindung besteht
darin, daß die Hilfsfunktionsschicht 12 keine Perforation
8 aufweist, sondern durch ihren eigenen schaumartigen
Aufbau Kommunikationskanäle 13 zwischen den
Durchbrechungen 9 der Perforation 8 und den
Absaugeinrichtungen 7 des Schleiftellers 5 bildet. Es
versteht sich hierbei, daß sowohl die Perforation 8 als
auch die Kommunikationskanäle 13 sowohl gas- als auch
partikeldurchströmbar sind. Gleiches gilt auch für den
Aufbau des Adapters gemäß den Figuren 6 bis 7. Der Adapter
4 sieht auch hier die Perforation 8 vor, die, falls der
Adapter 4 aus einer Klettadaptionsschicht 14 besteht,
lediglich diese durchsetzt, wenn wie hier gezeigt eine
Schaumpartikelschicht 15 mit einer darauf folgenden
Veloursschicht 16, welche selbst durchströmbar sind,
besteht.So there are grinding wheels for this invention in which the most varied layer structure is possible. For example, according to FIG. 3a, this can also be an auxiliary
As explained above, all the layers forming the grinding
One embodiment of the present invention is that the auxiliary
Figur 8 zeigt eine Perforation 8 die aus kreisrunden
Durchbrechungen gebildet ist. Figur 9 zeigt sternförmige
durchbrechungen 9 und Figur 10 vieleckige Durchbrechungen
9. Diese Durchbrechungen können symmetrisch wie die
quadratischen, rechteckigen oder dreieckigen
Durchbrechungen gemäß den Figuren 11 bis 13 oder auch von
assymetrischer Formgebung sein. Die Figur 14 zeigt ovale
Durchbrechungen 9. Die Wahl der geometrischen Form wird
durch den jeweiligen Anwendungsfall bestimmt. So kommen
auch schlitzartige Durchbrechungen 9 in lineare (Figur 15)
oder bogenförmige Ausrichtung (Figur 16) in Betracht. Das
Wesen der Erfindung wird u.a. durch die Perforationen im
Schleifkörper und im Adapter bzw. deren Schichtaufbau
bestimmt. So wurde erkannt, daß sowohl der Schleifkörper
als auch der Adapter separat oder auch in Kombination
miteinander genutzt werden können. Der erfindungsgmäße
Adapter kann sogar mit herkömmlichen,
Lochungen aufweisenden Schleifkörpern im Sinne des
Erfindungsgedankens genutzt werden. FIG. 8 shows a
Abrasive bodies having perforations can be used in the sense of the inventive concept.
- 11
- SchleifkörperGrinding wheel
- 22nd
- SchleifmittelAbrasives
- 33rd
- Schicht für 2 (tragend)Layer for 2 (load-bearing)
- 44th
- Adapteradapter
- 55
- Schleifteller/SchleifplatteSanding disc / plate
- 66
- SchleifmittelhalterAbrasive holder
- 77
- AbsaugeinrichtungSuction device
- 88th
- Perforationperforation
- 99
- Durchbrechungen von 8Breakthroughs of 8
- 1010th
- Schicht für 2 (einbettend)Layer for 2 (embedding)
- 1111
- Klettadaptionsschicht von 1Velcro adaptation layer from 1
- 1212th
- HilfsfunktionsschichtAuxiliary function layer
- 1313
- Kommunikationskanäle von 12/15Communication channels from 12/15
- 1414
- Kleppadaptionsschicht von 4Kleppadaptionsschicht of 4
- 1515
- Schaumpartikelschicht von 4Foam particle layer from 4
- 1616
- Veloursschicht von 4Velor layer from 4
- 1717th
- Klettadaptionsfläche von 5Velcro adaptation area of 5
- 1818th
- Zwischenschicht von 5Intermediate layer of 5
- 1919th
- Tragteller von 5Carrying plate from 5
- 2020th
- Verbindungselement von 5Connection element of 5
Claims (16)
- Grinding body, at least consisting of a particle stream-impermeable layer (3) comprising an abrasive (2), which can be mounted in a manner fit for work directly or by means of an adapter (4) indirectly on an abrasive holder (5, 6), with apertures (9) which at least pass through the layer (3) comprising the abrasive (2), and a layer, in particular a hooking adaptation layer (11), which is gas-permeable and particle stream-permeable, characterised in that the apertures (9) are constructed as a perforation (8) through which gas and particles can flow and which is distributed approximately uniformly over the whole surface area of the grinding body or part of it, wherein the individual apertures (9) forming the perforation (8) are connected to each other and the distance between them is selected such that continuous transport of the grinding dust almost without congestion is caused.
- Grinding body according to claim 1, characterised in that the layer (3) comprising the abrasive (2) and the hooking adaptation layer (11) together have the perforation (8) passing through them.
- Grinding body according to claim 1 or 2, characterised in that between the layer (3) comprising the abrasive (2) or its carrier or embedding layer (10) and the hooking adaptation layer (11) is arranged an additional gas-permeable and particle-permeable layer which is formed as a resilient adaptation layer or equalisation layer or as a temperature barrier layer or is suitable for wet and/or dry grinding.
- Grinding body according to claims 1 to 3, characterised in that the layers forming the grinding body (1) have a common perforation (8).
- Grinding body according to claims 1 to 4, characterised in that the additional layer (12) has no perforation (8) and due to a foam-like structure forms communication channels (13) between the apertures (9) of the perforation (8) of the adjacent layer and the extraction means (7) of the abrasive holder (5, 6).
- Grinding body according to claims 1 to 5, characterised in that gas and particles can flow through the communication channels (13) too.
- Grinding body according to claims 1 to 6, characterised in that the perforation (8) is formed by circular, angular or oval apertures (9).
- Grinding body according to claims 1 to 6, characterised in that the perforation (8) is formed by slot-like apertures (9) which are oriented in particular linearly or arcuately.
- Grinding body according to claims 1 to 8, characterised in that it is disc-shaped.
- Grinding body according to claims 1 to 9, characterised in that it is round, angular, in particular rectangular, triangular or star-shaped.
- Grinding body according to claims 1 to 10, characterised in that the abrasive carrier is made of paper, a woven fabric or fleece.
- Combination of a grinding body according to any of claims 1 to 11 and an abrasive holder (5, 6) to which the grinding body is attached and which comprises means which cooperate with extraction means (7), and the distance between the apertures (9) and the extraction means (7) of the abrasive holder (5) is selected such that transport of the grinding dust almost without congestion is caused.
- Combination according to claim 12, characterised in that it can be mounted on an abrasive holder (5) of a machine constructed as a grinding disc or grinding plate.
- Adapter for mounting in a manner fit for work both a conventional grinding body and a grinding body according to claims 1 to 11 on a machine or abrasive holder, which consists of a hooking adaptation layer (14), a foam particle layer (15) and a velours layer (16) which are gas-permeable and particle stream-permeable, wherein through the hooking adaptation layer (14) facing towards the grinding body (1) passes a perforation (8) which is gas-permeable and particle stream-permeable and distributed approximately uniformly over the whole surface area of the adapter or part of it.
- Adapter according to claim 14, characterised in that the foam particle layer (15) is constructed as a resilient adaptation layer or equalisation layer or as a temperature barrier layer or is suitable for wet and/or dry grinding.
- Adapter according to claim 15, characterised in that the foam particle layer (15) has no perforation (8) and due to the foam-like structure forms communication channels (13) through which gas and particles can flow between the apertures (9) of the perforation of the adjacent layer and the extraction means of the grinding disc or grinding plate or the abrasive holde.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29520566U | 1995-12-29 | ||
DE29520566U DE29520566U1 (en) | 1995-12-29 | 1995-12-29 | Abrasives that can be adapted directly or indirectly with a machine or a manually operated abrasive holder as well as a suitable adapter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0781629A1 EP0781629A1 (en) | 1997-07-02 |
EP0781629B1 true EP0781629B1 (en) | 1999-06-09 |
Family
ID=8017243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96106587A Expired - Lifetime EP0781629B1 (en) | 1995-12-29 | 1996-04-26 | Directly or indirectly adaptable grinding body for a machine or a manually operable grinding device holder, as well as a suitable adapter for same |
Country Status (7)
Country | Link |
---|---|
US (1) | US5810650A (en) |
EP (1) | EP0781629B1 (en) |
AT (1) | ATE181010T1 (en) |
DE (2) | DE29520566U1 (en) |
DK (1) | DK0781629T3 (en) |
ES (1) | ES2132803T3 (en) |
GR (1) | GR3030560T3 (en) |
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EP2957387A1 (en) | 2014-06-18 | 2015-12-23 | Hermes Schleifmittel GmbH & Co. KG | Adapter for attaching a grinding wheel on a support pad |
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- 1995-12-29 DE DE29520566U patent/DE29520566U1/en not_active Expired - Lifetime
-
1996
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- 1996-04-26 ES ES96106587T patent/ES2132803T3/en not_active Expired - Lifetime
- 1996-04-26 AT AT96106587T patent/ATE181010T1/en active
- 1996-04-26 DK DK96106587T patent/DK0781629T3/en active
- 1996-04-26 EP EP96106587A patent/EP0781629B1/en not_active Expired - Lifetime
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1999
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010002539A1 (en) | 2010-03-03 | 2011-09-08 | Jöst Gmbh | Abrasive body for use in sharpening plate of e.g. sanding sleeve of angle grinder for grinding cylindrical inner or outer surfaces of work-piece for construction of e.g. furniture, has filter froth exhibiting specific air permeability |
EP2409592A2 (en) | 2010-07-20 | 2012-01-25 | Gottlieb Binder GmbH & Co. KG | Fastener part and method for manufacturing same |
DE102010027616A1 (en) | 2010-07-20 | 2012-01-26 | Gottlieb Binder Gmbh & Co. Kg | Adhesive closure part and method for producing an adhesive closure part |
DE102012201329A1 (en) | 2012-01-31 | 2013-08-01 | Robert Bosch Gmbh | unit |
DE202012013026U1 (en) | 2012-01-31 | 2014-07-15 | Robert Bosch Gmbh | unit |
EP2957387A1 (en) | 2014-06-18 | 2015-12-23 | Hermes Schleifmittel GmbH & Co. KG | Adapter for attaching a grinding wheel on a support pad |
DE102017216175A1 (en) * | 2017-09-13 | 2019-03-14 | Robert Bosch Gmbh | abrasive article |
WO2019052787A1 (en) | 2017-09-13 | 2019-03-21 | Robert Bosch Gmbh | Abrasive article |
US11697186B2 (en) | 2017-09-13 | 2023-07-11 | Robert Bosch Gmbh | Abrasive article |
Also Published As
Publication number | Publication date |
---|---|
DE29520566U1 (en) | 1996-02-22 |
DK0781629T3 (en) | 1999-12-06 |
US5810650A (en) | 1998-09-22 |
EP0781629A1 (en) | 1997-07-02 |
GR3030560T3 (en) | 1999-10-29 |
ATE181010T1 (en) | 1999-06-15 |
ES2132803T3 (en) | 1999-08-16 |
DE59602161C5 (en) | 2011-03-03 |
DE59602161D1 (en) | 1999-07-15 |
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