EP3965993A1 - Grinding device - Google Patents

Grinding device

Info

Publication number
EP3965993A1
EP3965993A1 EP20727982.9A EP20727982A EP3965993A1 EP 3965993 A1 EP3965993 A1 EP 3965993A1 EP 20727982 A EP20727982 A EP 20727982A EP 3965993 A1 EP3965993 A1 EP 3965993A1
Authority
EP
European Patent Office
Prior art keywords
grinding
plate
grinding device
sanding
held
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.)
Pending
Application number
EP20727982.9A
Other languages
German (de)
French (fr)
Inventor
Werner Unnerstall
Christian Wall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rud Starcke GmbH and Co KG
Original Assignee
Rud Starcke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rud Starcke GmbH and Co KG filed Critical Rud Starcke GmbH and Co KG
Publication of EP3965993A1 publication Critical patent/EP3965993A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/06—Portable grinding machines, e.g. hand-guided; Accessories therefor with abrasive belts, e.g. with endless travelling belts; Accessories therefor

Definitions

  • the invention relates to a grinding device according to the preamble of claim 1.
  • Such a grinding device is known, for example, from EP 1 908 554 B1.
  • the grinding element of this grinding device is leaf-shaped latestbil det with a round, oval, square or rectangular base and is held by suction on the grinding plate.
  • the size of the base area of the sanding element corresponds to the base area of the sanding plate.
  • the grinding elements used are available as individual sheets that have to be replaced when the grinding elements are worn out.
  • the grinding device known from the cited EP 1 908 554 B1 is designed for manual use, which, however, results in a number of necessary operations which, in particular, oppose cost optimization.
  • DE 102 22 956 A1 discloses a grinding device in which a grinding belt is used that is drawn continuously over the support surface of a grinding plate.
  • the adhesion of the sanding belt to the sanding plate should be supported by vacuum tension, whereby the adhesion, i.e. the resulting frictional force, must be smaller than the tensile force with which the sanding belt is continuously moved.
  • a generic grinding device is also known from DE 10 2017 108 191 A1. In principle, this grinding device has proven itself in practice, but the problems mentioned in connection with EP 1 908 554 B1 also occur during operation.
  • the invention is based on the object of further developing a grinding device of the type according to the species in such a way that reworking of the grinding points is not necessary and the processing time, including the set-up times, is shortened.
  • the grinding device according to the invention offers clear advantages over one according to the prior art.
  • the circumferential protruding edge of the grinding element provided according to the invention means that the machined grinding points in the formed edge area can be polished out more quickly, since this edge area has a lower roughness, which results in a higher quality machining result.
  • the sanding pad is designed to be rectangular instead of a circular base area, this rectangular shape being particularly suitable for sanding beads.
  • a grinding belt is used as the grinding element, which is preferably rolled up and unwound, for which purpose a suitable device is provided.
  • the sanding pad is fed with new sanding element at certain time intervals when the sanding element is worn out, so to speak, with the result that set-up and changing times are minimized.
  • the sanding pad is multilayered, preferably consisting of a connector with a threaded hole for fastening to a grinding machine, for example, this connector preferably being made of plastic.
  • an elastic intermediate layer in particular made of a foam, which is covered by a dimensionally stable support plate, in particular made of an elastomer with a flat support surface, on which the grinding element rests by suction.
  • the connecting piece can also be made of a different material, in particular also of Me tall, with a connection element that is firmly connected to a drive is turned into the threaded hole.
  • the thread pairing of the connecting element / connecting piece is designed to be self-locking, so that, on the one hand, a secure hold is guaranteed during operation and, on the other hand, it can be changed without tools.
  • connection element as well as the connection piece, the elastic intermediate layer and the support plate are provided with a central air line which is angled in the connection element as a suction connection.
  • This lateral suction connection allows the use of a commercially available, orbitally driven grinding machine, whereby the grinding plate can be decoupled from the drive of the grinding machine through this design.
  • the arrival The drive motor and the sanding pad can be operatively connected via a toothed belt, for example.
  • the elastic intermediate layer preferably consisting of foam, adapts particularly well to contours to be ground, so that this grinding device according to the invention is particularly suitable for processing finished surfaces.
  • the sanding pad is convexly curved on the side facing the sanding element, i.e. the side on which the sanding element is held, whereby, as has been shown, beads to be sanded are particularly easy and effective to machine.
  • Fig. 1 is connected to a grinding machine Schleifvorrich device according to the invention in a schematic perspective view
  • Fig. 2 is a detail of the grinding machine in a cut Be tenansicht
  • Fig. 3 views a detail of the grinding device in different to
  • Fig. 4 shows a further detail of the grinding device, also in un different views
  • FIG. 5 shows a further exemplary embodiment of the detail according to FIG. 4 in a perspective view.
  • FIG. 1 shows a grinding machine with a grinding device 1 to which a drive 4 is connected, by means of which a grinding plate 2 can be driven.
  • a sanding element 3 in the form of a sanding belt is held by suction, with a suction connection 6 (Fig. 2) attached to a connection element 7 of the sanding plate 2, which is connected to a suction line, not shown.
  • the grinding element 3 is guided around two parallel and spaced, on both sides of the grinding plate 2 arranged pulleys 5.
  • the entire grinding machine can be attached to a robot (not shown) or the like and guided to the surfaces to be ground under computer control.
  • the grinding element 3 protrudes circumferentially with respect to the grinding plate 2, the useful side of the grinding element 3 being formed by abrasive grains that cover the entire surface of the latter. This means that the width of the grinding belt is larger than the assigned dimensions of the grinding plate 2.
  • FIG. 2 a part of the grinding machine is shown in a cut toan view. Only one connection element 7 of the sanding plate 2 can be seen, which is shown as a detail in FIG. 3.
  • connection element 7 can be moved orbitally or eccentrically in a plane by means of the drive 4, a toothed belt 8 being provided as the drive means, which is guided laterally into the grinding device 1.
  • suction connection 6 is connected to a suction line 10 of the connection element 7.
  • connection element 7 can be seen in FIG. 3, specifically in a perspective view from below and a sectional side view.
  • connection element 7 has a threaded nipple 9, on which a connecting piece 11, which has a threaded bore 14, is screwed.
  • the suction line 10 which, in relation to the central axis of the connection element 7, extends at an angle, namely once as a blind hole and proceeding therefrom in the axial direction through the threaded nipple 9.
  • Fig. 4 shows the grinding plate 2 partially again. It can be seen here that at the end of the connecting piece 11 facing away from the connecting element 7 an elastic intermediate layer 12 is attached to which in turn a support plate 13 is attached.
  • the grinding element 3 is securely held on the support plate 13 by the suction effect which is active during operation.
  • the thread of the threaded bore 14 is designed to be self-locking in correspondence with the thread of the threaded nipple 9, so that the grinding plate 2 can be loosened without tools.
  • FIG. 5 a further variant of the sanding plate 2 can be seen.
  • the side of the support plate 13 and the intermediate layer 12 facing the grinding element 3 has a rectangular base area, which in the example are convexly curved.
  • This shape of the grinding plate 2 is particularly suitable for grinding beads or the like.
  • connection element 8 toothed belt

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention relates to a grinding device having a drivable backing pad (2) and a flexible grinding element (3) which is held on the backing pad (2) by suctioning and is provided with abrasive grains. The grinding device according to the invention is designed such that the grinding element (3) in the form of a grinding belt protrudes circumferentially with respect to the backing pad (2), the abrasive grains covering the entire area of the grinding element (3).

Description

Schleifvorrichtung Grinding device
Die Erfindung betrifft eine Schleifvorrichtung nach dem Oberbegriff des An spruchs 1. The invention relates to a grinding device according to the preamble of claim 1.
Eine derartige Schleifvorrichtung ist beispielsweise aus der EP 1 908 554 B1 bekannt. Das Schleifelement dieser Schleifvorrichtung ist blattförmig ausgebil det mit einer runden, ovalen, quadratischen oder rechteckigen Grundfläche und ist durch Ansaugen am Schleifteller gehalten. Dabei entspricht die Grundfläche des Schleifelements in ihrem Abmaß der Grundfläche des Schleiftellers. Such a grinding device is known, for example, from EP 1 908 554 B1. The grinding element of this grinding device is leaf-shaped ausgebil det with a round, oval, square or rectangular base and is held by suction on the grinding plate. The size of the base area of the sanding element corresponds to the base area of the sanding plate.
Überdies liegen die zum Einsatz kommenden Schleifelemente als einzelne Blätter vor, die nach Abnutzung der Schleifkörper ausgewechselt werden müs sen. In addition, the grinding elements used are available as individual sheets that have to be replaced when the grinding elements are worn out.
Vor allem im industriellen Einsatz, wenn also ein kontinuierlicher Schleifbetrieb gewünscht ist, sind die sich aus einem Schleifelementwechsel ergebenden Rüstzeiten inakzeptabel, insbesondere auch dann, wenn die Schleifvorrichtung automatisch betrieben werden soll, beispielsweise mittels eines Roboters. Especially in industrial use, when continuous grinding operation is desired, the set-up times resulting from a grinding element change are unacceptable, especially when the grinding device is to be operated automatically, for example by means of a robot.
Auch das Schleifergebnis selbst entspricht vielfach nicht den gestellten Anfor derungen, vor allem aufgrund der gleichen Grundflächenabmaße des Schleif tellers einerseits und des Schleifelementes andererseits. Dabei ist der Über gang zu dem nicht schleifend bearbeiteten Bereich sozusagen zu abrupt, so dass eine zeitaufwändige Nachbearbeitung erforderlich ist. Even the grinding result itself often does not meet the requirements, mainly due to the same base dimensions of the grinding plate on the one hand and the grinding element on the other. The transition to the non-abrasive area is, so to speak, too abrupt, so that time-consuming post-processing is necessary.
Die aus der genannten EP 1 908 554 B1 bekannte Schleifvorrichtung ist für ei nen manuellen Einsatz konzipiert, woraus sich allerdings eine Reihe notwendi ger Arbeitsgänge ergeben, die insbesondere einer Kostenoptimierung entge genstehen. The grinding device known from the cited EP 1 908 554 B1 is designed for manual use, which, however, results in a number of necessary operations which, in particular, oppose cost optimization.
Der erhebliche Zeitaufwand, der für das Wechseln des Schleifelementes erfor derlich ist, ergibt sich insbesondere daraus, dass das Schleifelement passge nau, zentrisch und mit der richtigen Seite am Schleifteller befestigt werden muss. The considerable amount of time required to change the grinding element results in particular from the fact that the grinding element must be attached to the sanding pad with a precise fit, centrically and with the correct side.
Alles in allem ist die bekannte, gattungsgemäße Schleifvorrichtung nicht geeig net, die Anforderungen, insbesondere in qualitativer Hinsicht des Schleifergeb- nisses, aber auch hinsichtlich einer optimierten Bearbeitungszeit, gerecht zu werden. All in all, the known, generic grinding device is not suitable to meet the requirements, especially in terms of the quality of the grinding device. nisses, but also with regard to an optimized processing time.
In der DE 102 22 956 A1 ist eine Schleifvorrichtung offenbart, bei der ein Schleifband zum Einsatz kommt, das kontinuierlich über die Trägerfläche eines Schleiftellers gezogen wird. Die Haftung des Schleifbandes am Schleifteller soll durch Vakuumspannung unterstützt werden, wobei die Haftung, sprich eine sich ergebende Reibkraft, kleiner sein muss als die Zugkraft, mit der das Schleifband kontinuierlich bewegt wird. DE 102 22 956 A1 discloses a grinding device in which a grinding belt is used that is drawn continuously over the support surface of a grinding plate. The adhesion of the sanding belt to the sanding plate should be supported by vacuum tension, whereby the adhesion, i.e. the resulting frictional force, must be smaller than the tensile force with which the sanding belt is continuously moved.
Eine gattungsgemäße Schleifvorrichtung ist weiterhin aus der DE 10 2017 108 191 A1 bekannt. Prinzipiell hat sich diese Schleifvorrichtung in der Praxis be währt, jedoch treten im Betrieb auch die zur EP 1 908 554 B1 genannten Prob leme auf. A generic grinding device is also known from DE 10 2017 108 191 A1. In principle, this grinding device has proven itself in practice, but the problems mentioned in connection with EP 1 908 554 B1 also occur during operation.
Der Erfindung liegt die Aufgabe zugrunde, eine Schleifvorrichtung der gat tungsgemäßen Art so weiterzuentwickeln, dass eine Nachbearbeitung der Schleifstellen nicht erforderlich ist und die Bearbeitungszeit, einschließlich der Rüstzeiten verkürzt wird. The invention is based on the object of further developing a grinding device of the type according to the species in such a way that reworking of the grinding points is not necessary and the processing time, including the set-up times, is shortened.
Diese Aufgabe wird durch eine Schleifvorrichtung mit den Merkmalen des An spruchs 1 gelöst. This object is achieved by a grinding device with the features of claim 1.
Die erfindungsgemäße Schleifvorrichtung bietet gegenüber einer nach dem Stand der Technik deutliche Vorteile. Hierzu ist zunächst anzuführen, dass durch den erfindungsgemäß vorgesehenen umfänglichen Randüberstand des Schleifelementes die bearbeiteten Schleifstellen in dem gebildeten Randbe reich schneller auspolierbar sind, da dieser Randbereich eine geringere Rautie fe aufweist, woraus sich ein qualitativ hochwertigeres Bearbeitungsergebnis ergibt. The grinding device according to the invention offers clear advantages over one according to the prior art. First of all, it should be noted that the circumferential protruding edge of the grinding element provided according to the invention means that the machined grinding points in the formed edge area can be polished out more quickly, since this edge area has a lower roughness, which results in a higher quality machining result.
Bei einem kreisrunden Schleifteller entstehen rechteckig ausgeführte Schleif stellen mit der genannten geringeren Rautiefe im Randbereich, dies vor allem deshalb, da der vom Schleifteller wirksame Anpressdruck lediglich reduziert wirkt. In the case of a circular sanding pad, rectangular sanding points with the aforementioned lower roughness are created in the edge area, mainly because the contact pressure effective from the sanding pad only has a reduced effect.
Nach einem weiteren Gedanken der Erfindung ist der Schleifteller statt mit ei ner kreisrunden Grundfläche rechteckig ausgeführt, wobei diese Rechteckform vor allem zum Schleifen von Sicken geeignet ist. Gemäß der Erfindung findet als Schleifelement ein Schleifband Verwendung, das vorzugsweise gerollt vorliegt und abgewickelt wird, wozu eine geeignete Einrichtung vorgesehen ist. According to a further idea of the invention, the sanding pad is designed to be rectangular instead of a circular base area, this rectangular shape being particularly suitable for sanding beads. According to the invention, a grinding belt is used as the grinding element, which is preferably rolled up and unwound, for which purpose a suitable device is provided.
Durch den Vorschub des Schleifbandes wird dem Schleifteller in bestimmten zeitlichen Abständen, wenn das Schleifelement sozusagen abgenutzt ist, neues Schleifelement zugeführt, mit der Folge, dass Rüst- und Wechselzeiten mini miert werden. As a result of the advance of the sanding belt, the sanding pad is fed with new sanding element at certain time intervals when the sanding element is worn out, so to speak, with the result that set-up and changing times are minimized.
Hierzu trägt auch bei, dass das Schleifband im Anlagebereich an dem Schleif teller exakt ausgerichtet wird, womit die Bearbeitungsdauer sowie das Schlei fergebnis optimiert werden. This also contributes to the fact that the sanding belt is precisely aligned in the contact area on the sanding plate, which optimizes the processing time and the sanding result.
Nach einem weiteren Gedanken der Erfindung ist der Schleifteller mehrlagig ausgebildet, vorzugsweise bestehend aus einem Verbindungsstück mit bei spielsweise einer Gewindebohrung zum Befestigen an einer Schleifmaschine, wobei dieses Verbindungsstück vorzugsweise aus Kunststoff besteht. According to a further idea of the invention, the sanding pad is multilayered, preferably consisting of a connector with a threaded hole for fastening to a grinding machine, for example, this connector preferably being made of plastic.
Daran gehalten, dem Schleifelement zugewandt, ist eine elastische Zwischen lage, insbesondere aus einem Schaumstoff, die abgedeckt wird von einer form stabilen Tragplatte, insbesondere aus einem Elastomer mit einer planebenen Tragfläche, an der das Schleifelement angesaugt anliegt. Attached to it, facing the grinding element, is an elastic intermediate layer, in particular made of a foam, which is covered by a dimensionally stable support plate, in particular made of an elastomer with a flat support surface, on which the grinding element rests by suction.
Neben der Ausbildung des Verbindungsstückes aus Kunststoff kann das Ver bindungsstück auch aus einem anderen Material, insbesondere auch aus Me tall gefertigt sein, wobei in die Gewindebohrung ein Anschlusselement einge dreht ist, das fest mit einem Antrieb verbunden ist. In addition to the formation of the connecting piece made of plastic, the connecting piece can also be made of a different material, in particular also of Me tall, with a connection element that is firmly connected to a drive is turned into the threaded hole.
Die Gewindepaarung AnschlusselementA/erbindungsstück ist selbsthemmend ausgebildet, so dass einerseits ein sicherer Halt auch im Betrieb gewährleistet ist und andererseits ein werkzeugloser Wechsel möglich ist. The thread pairing of the connecting element / connecting piece is designed to be self-locking, so that, on the one hand, a secure hold is guaranteed during operation and, on the other hand, it can be changed without tools.
Das Anschlusselement, ebenso wie das Verbindungsstück, die elastische Zwi schenschicht und die Tragplatte sind mit einer zentralen Luftleitung versehen, die im Anschlusselement abgewinkelt ausgeführt ist als Sauganschluss. The connection element, as well as the connection piece, the elastic intermediate layer and the support plate are provided with a central air line which is angled in the connection element as a suction connection.
Dieser seitliche Sauganschluss erlaubt den Einsatz einer handelsüblichen, or bital angetriebenen Schleifmaschine, wobei durch diese Bauweise der Schleif teller vom Antrieb der Schleifmaschine entkoppelt werden kann. Der An- triebsmotor und der Schleifteller können beispielsweise über einen Zahnrie menantrieb in Wirkverbindung stehen. This lateral suction connection allows the use of a commercially available, orbitally driven grinding machine, whereby the grinding plate can be decoupled from the drive of the grinding machine through this design. The arrival The drive motor and the sanding pad can be operatively connected via a toothed belt, for example.
Die elastische, vorzugsweise aus Schaumstoff bestehende Zwischenschicht passt sich besonders gut an zu beschleifende Konturen an, so dass diese Schleifvorrichtung gemäß der Erfindung insbesondere geeignet ist, um endla ckierte Oberflächen zu bearbeiten. The elastic intermediate layer, preferably consisting of foam, adapts particularly well to contours to be ground, so that this grinding device according to the invention is particularly suitable for processing finished surfaces.
Nach einem weiteren Gedanken der Erfindung ist der Schleifteller auf der dem Schleifelement zugewandten Seite, d.h., der Seite, an der das Schleifelement gehalten ist, konvex gewölbt, wodurch sich, wie sich gezeigt hat, zu beschlei fende Sicken besonders einfach und effektiv bearbeitbar sind. According to a further concept of the invention, the sanding pad is convexly curved on the side facing the sanding element, i.e. the side on which the sanding element is held, whereby, as has been shown, beads to be sanded are particularly easy and effective to machine.
Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Further advantageous developments of the invention are characterized in the subclaims.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der beigefüg ten Zeichnungen beschrieben. Embodiments of the invention are described below with reference to the accompanying drawings.
Es zeigen: Show it:
Fig. 1 eine an eine Schleifmaschine angeschlossene Schleifvorrich tung gemäß der Erfindung in einer schematischen perspektivi schen Ansicht Fig. 1 is connected to a grinding machine Schleifvorrich device according to the invention in a schematic perspective view
Fig. 2 eine Einzelheit der Schleifmaschine in einer geschnittenen Sei tenansicht Fig. 2 is a detail of the grinding machine in a cut Be tenansicht
Fig. 3 eine Einzelheit der Schleifvorrichtung in unterschiedlichen An sichten Fig. 3 views a detail of the grinding device in different to
Fig. 4 eine weitere Einzelheit der Schleifvorrichtung, gleichfalls in un terschiedlichen Ansichten Fig. 4 shows a further detail of the grinding device, also in un different views
Fig. 5 eine weiteres Ausführungsbeispiel der Einzelheit nach Fig. 4 in einer perspektivischen Ansicht. FIG. 5 shows a further exemplary embodiment of the detail according to FIG. 4 in a perspective view.
In der Fig. 1 ist eine Schleifmaschine abgebildet, mit einer Schleifvorrichtung 1 , an der ein Antrieb 4 angeschlossen ist mittels dessen ein Schleifteller 2 an- treibbar ist. An der freien Seite des Schleiftellers 2 ist ein Schleifelement 3 in Form eines Schleifbandes durch Ansaugen gehalten, wobei seitlich an ein Anschlussele ment 7 des Schleiftellers 2 ein Sauganschluss 6 (Fig. 2) angebracht ist, der mit einer nicht dargestellten Saugleitung verbunden ist. 1 shows a grinding machine with a grinding device 1 to which a drive 4 is connected, by means of which a grinding plate 2 can be driven. On the free side of the sanding plate 2, a sanding element 3 in the form of a sanding belt is held by suction, with a suction connection 6 (Fig. 2) attached to a connection element 7 of the sanding plate 2, which is connected to a suction line, not shown.
Das Schleifelement 3 ist um zwei parallel und abständig, beidseitig des Schleif tellers 2 angeordnete Umlenkrollen 5 geführt. Die gesamte Schleifmaschine kann an einem nicht dargestellten Roboter oder dergleichen befestigt sein und rechnergesteuert zu den zu beschleifenden Oberflächen geführt werden. The grinding element 3 is guided around two parallel and spaced, on both sides of the grinding plate 2 arranged pulleys 5. The entire grinding machine can be attached to a robot (not shown) or the like and guided to the surfaces to be ground under computer control.
Gemäß der Erfindung steht das Schleifelement 3 umfänglich gegenüber dem Schleifteller 2 vor, wobei die Nutzseite des Schleifelementes 3 durch diese voll flächig bedeckende Schleifkörner gebildet wird. D.h., die Breite des Schleifban des ist größer als das zugeordnete Abmaß des Schleiftellers 2. According to the invention, the grinding element 3 protrudes circumferentially with respect to the grinding plate 2, the useful side of the grinding element 3 being formed by abrasive grains that cover the entire surface of the latter. This means that the width of the grinding belt is larger than the assigned dimensions of the grinding plate 2.
In der Fig. 2 ist ein Teil der Schleifmaschine in einer geschnittenen Seitenan sicht abgebildet. Von dem Schleifteller 2 ist lediglich ein Anschlusselement 7 erkennbar, das in der Fig. 3 als Einzelheit dargestellt ist. In Fig. 2, a part of the grinding machine is shown in a cut Seitenan view. Only one connection element 7 of the sanding plate 2 can be seen, which is shown as a detail in FIG. 3.
Dieses Anschlusselement 7 ist mittels des Antriebs 4 in einer Ebene orbital o- der exzentrisch bewegbar, wobei als Antriebsmittel vorzugsweise ein Zahnrie men 8 vorgesehen ist, der seitlich in die Schleifvorrichtung 1 geführt ist. This connection element 7 can be moved orbitally or eccentrically in a plane by means of the drive 4, a toothed belt 8 being provided as the drive means, which is guided laterally into the grinding device 1.
Weiter ist erkennbar, dass der Sauganschluss 6 an eine Saugleitung 10 des Anschlusselementes 7 angeschlossen ist. It can also be seen that the suction connection 6 is connected to a suction line 10 of the connection element 7.
Wie erwähnt, ist in der Fig. 3 das Anschlusselement 7 erkennbar und zwar in einer perspektivischen Unteransicht und einer geschnittenen Seitenansicht. As mentioned, the connection element 7 can be seen in FIG. 3, specifically in a perspective view from below and a sectional side view.
Dieses Anschlusselement 7 weist einen Gewindenippel 9 auf, an dem ein Ver bindungsstück 11 , das eine Gewindebohrung 14 aufweist, angeschraubt ist. This connection element 7 has a threaded nipple 9, on which a connecting piece 11, which has a threaded bore 14, is screwed.
Die Saugleitung 10, die, bezogen auf die Mittelachse des Anschlusselementes 7 sich winkelförmig erstreckt, und zwar einmal als Sackbohrung und davon ausgehend in axialer Richtung durch den Gewindenippel 9. The suction line 10, which, in relation to the central axis of the connection element 7, extends at an angle, namely once as a blind hole and proceeding therefrom in the axial direction through the threaded nipple 9.
Die Fig. 4 gibt den Schleifteller 2 teilweise wieder. Hier ist zu erkennen, dass an dem dem Anschlusselement 7 abgewandten Ende des Verbindungsstückes 11 eine elastische Zwischenschicht 12 angebracht ist, an der wiederum eine Trag platte 13 befestigt ist. Fig. 4 shows the grinding plate 2 partially again. It can be seen here that at the end of the connecting piece 11 facing away from the connecting element 7 an elastic intermediate layer 12 is attached to which in turn a support plate 13 is attached.
Durch die drei Komponenten ist eine Durchgangsbohrung 15 geführt, die in die Axialbohrung des Anschlusselementes 7 führt. A through hole 15, which leads into the axial hole of the connection element 7, is guided through the three components.
Durch die im Betrieb aktive Saugwirkung wird das Schleifelement 3 sicher an der Tragplatte 13 gehalten. Im Übrigen ist das Gewinde der Gewindebohrung 14 in Korrespondenz mit dem Gewinde des Gewindenippels 9 selbsthemmend ausgebildet, so dass ein werkzeugloses Lösen des Schleiftellers 2 möglich ist. The grinding element 3 is securely held on the support plate 13 by the suction effect which is active during operation. In addition, the thread of the threaded bore 14 is designed to be self-locking in correspondence with the thread of the threaded nipple 9, so that the grinding plate 2 can be loosened without tools.
In der Fig. 5 ist eine weitere Ausführungsvariante des Schleiftellers 2 erkenn- bar. Dabei weist die dem Schleifelement 3 zugewandte Seite der Tragplatte 13 und der Zwischenschicht 12 eine rechteckige Grundfläche auf, die im Beispiel konvex gewölbt sind. Diese Form des Schleiftellers 2 eignet sich insbesondere zum Beschleifen von Sicken oder dergleichen. In FIG. 5, a further variant of the sanding plate 2 can be seen. The side of the support plate 13 and the intermediate layer 12 facing the grinding element 3 has a rectangular base area, which in the example are convexly curved. This shape of the grinding plate 2 is particularly suitable for grinding beads or the like.
Bezugszeichenliste List of reference symbols
1 Schleifvorrichtung1 grinding device
2 Schleifteller 2 sanding pads
3 Schleifelement3 grinding element
4 Antrieb 4 drive
5 Umlenkrolle 5 pulley
6 Sauganschluss 6 suction connection
7 Anschlusselement 8 Zahnriemen 7 connection element 8 toothed belt
9 Gewindenippel 9 threaded nipples
10 Saugleitung 10 suction line
11 Verbindungsstück 11 connector
12 Zwischenschicht 13 Tragplatte 12 intermediate layer 13 support plate
14 Gewindebohrung 14 threaded hole
15 Durchgangsbohrung 15 through hole

Claims

Ansprüche Expectations
1. Schleifvorrichtung mit einem antreibbaren Schleifteller (2) sowie einem fle xiblen, am Schleifteller (2) durch Ansaugen gehaltenen, mit Schleifkörnern versehenen Schleifelement (3), dadurch gekennzeichnet, dass das Schleifelement (3) in Form eines Schleifbandes umfänglich gegenüber dem Schleifteller (2) vorsteht, wobei die Schleifkörner das Schleifelement (3) vollflächig bedecken. 1. Grinding device with a drivable grinding plate (2) and a flexible, on the grinding plate (2) held by suction, provided with abrasive grains grinding element (3), characterized in that the grinding element (3) in the form of a grinding belt circumferentially opposite the grinding plate ( 2) protrudes, with the abrasive grains covering the entire surface of the grinding element (3).
2. Schleifvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Schleifteller (2) ein starres Verbindungsstück (11 ) aufweist, an dem eine elastische Zwischenschicht (12) gehalten ist, das wiederum auf der dem Verbindungsstück (11 ) abgewandten Seite eine Tragplatte (13) gehalten ist, an der das Schleifelement (3) in Funktion anliegt. 2. Grinding device according to claim 1, characterized in that the grinding plate (2) has a rigid connecting piece (11) on which an elastic intermediate layer (12) is held, which in turn has a support plate (13) on the side facing away from the connecting piece (11) ) is held, on which the grinding element (3) rests in function.
3. Schleifvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die elastische Zwischenschicht aus einem Schaumstoff besteht. 3. Grinding device according to claim 1 or 2, characterized in that the elastic intermediate layer consists of a foam.
4. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die die Tragplatte (13) aus einem Elastomer be steht. 4. Grinding device according to one of the preceding claims, characterized in that the support plate (13) is made of an elastomer BE.
5. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schleifteller (2) an einem angetriebenen An schlusselement (7) angeschraubt ist. 5. Grinding device according to one of the preceding claims, characterized in that the grinding plate (2) is screwed to a driven connection element (7).
6. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gewindepaarung des Anschlusselementes (7) und des Schleiftellers (2) selbsthemmend ausgebildet ist. 6. Grinding device according to one of the preceding claims, characterized in that the thread pairing of the connection element (7) and the grinding plate (2) is designed to be self-locking.
7. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schleifteller (2) im Grundriss rechteckig aus gebildet ist. 7. Grinding device according to one of the preceding claims, characterized in that the grinding plate (2) is formed from rectangular in plan.
8. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schleifteller (2) auf seiner dem Schleifelement (3) zugewandten Seite konvex gewölbt ist. 8. Grinding device according to one of the preceding claims, characterized in that the grinding plate (2) is convexly curved on its side facing the grinding element (3).
9. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Anschlusselement (7) eine radial ausgerichte- te Saugleitung (10) aufweist, die in eine axiale Saugleitung übergeht, wo bei die axiale Saugleitung durch den Schleifteller (2) fortgesetzt ist. 9. Grinding device according to one of the preceding claims, characterized in that the connecting element (7) has a radially aligned te suction line (10), which merges into an axial suction line, where the axial suction line is continued through the grinding plate (2).
10. Schleifvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schleifteller (2) mittels eines an einem Antrieb10. Grinding device according to one of the preceding claims, characterized in that the grinding plate (2) by means of one on a drive
(4) angeschlossenen Zahnriemens (8) antreibbar ist. (4) connected toothed belt (8) can be driven.
EP20727982.9A 2019-07-17 2020-05-20 Grinding device Pending EP3965993A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019119333.8A DE102019119333A1 (en) 2019-07-17 2019-07-17 Grinding device
PCT/EP2020/064150 WO2021008760A1 (en) 2019-07-17 2020-05-20 Grinding device

Publications (1)

Publication Number Publication Date
EP3965993A1 true EP3965993A1 (en) 2022-03-16

Family

ID=70847368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20727982.9A Pending EP3965993A1 (en) 2019-07-17 2020-05-20 Grinding device

Country Status (9)

Country Link
US (1) US20220274225A1 (en)
EP (1) EP3965993A1 (en)
CN (1) CN114096380A (en)
BR (1) BR112021023426A2 (en)
CA (1) CA3141180A1 (en)
DE (1) DE102019119333A1 (en)
MA (1) MA55886A (en)
MX (1) MX2022000577A (en)
WO (1) WO2021008760A1 (en)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1876404U (en) * 1963-01-22 1963-07-25 Josef Heim HAND GRINDING MACHINE FOR GRINDING ROCK, PROFILES, EDGES OD. DGL.
DD225093A1 (en) * 1984-07-02 1985-07-24 Sachsenring Automobilwerke GRINDING PLATE FOR RECEIVING FLEXIBLE GRINDING BLADES BY MEANS OF SUCTION
AT383763B (en) * 1984-11-02 1987-08-25 Braun Michael PROFILE GRINDING MACHINE
DE3642086A1 (en) * 1986-12-10 1988-06-23 Fraunhofer Ges Forschung Grinding device
DE29809710U1 (en) * 1998-05-29 1998-09-03 Mueller Heinrich Machine processing device
DE20221899U1 (en) * 2002-05-24 2008-12-11 FIP Forschungsinstitut für Produktionstechnik GmbH Braunschweig fine grinding machine
TWI278377B (en) * 2006-03-24 2007-04-11 Jhy-Cherng Tsai Compliant suspension for precision polishing and grinding machine
TWM297810U (en) * 2006-03-24 2006-09-21 Jhy-Cherng Tsai Apparatus for precision linear polishing and grinding
DE102006047007A1 (en) * 2006-10-02 2008-04-03 Onsystem Ohg Disc grinder grinding plate, has channel for fixture of grinding material by vacuum normal to grinding plane
WO2009104614A1 (en) * 2008-02-22 2009-08-27 日本ミクロコーティング株式会社 Method and apparatus for polishing outer circumferential end section of semiconductor wafer
ITUD20080204A1 (en) * 2008-09-26 2010-03-27 Delle Vedove Levigatrici S P A GRINDING MACHINE AND ITS PROCEDURE
US8148266B2 (en) * 2009-11-30 2012-04-03 Corning Incorporated Method and apparatus for conformable polishing
JP6071611B2 (en) * 2013-02-13 2017-02-01 Ｍｉｐｏｘ株式会社 Method for manufacturing circular wafer by polishing peripheral edge of wafer made of crystalline material having notch portion such as orientation flat using polishing tape
DE102017108191A1 (en) * 2017-04-18 2018-10-18 Rud. Starcke Gmbh & Co. Kg Method for partially grinding a surface and grinding device
CN107263262B (en) * 2017-07-13 2023-05-26 哈尔滨工业大学深圳研究生院 Six-degree-of-freedom abrasive belt grinding unit attitude compensation device

Also Published As

Publication number Publication date
US20220274225A1 (en) 2022-09-01
DE102019119333A1 (en) 2021-01-21
MX2022000577A (en) 2022-02-10
CN114096380A (en) 2022-02-25
WO2021008760A1 (en) 2021-01-21
MA55886A (en) 2022-03-16
CA3141180A1 (en) 2021-01-21
BR112021023426A2 (en) 2022-01-04

Similar Documents

Publication Publication Date Title
DE60101652T2 (en) GRINDING TOOL
DE202012002267U1 (en) Disc grinder of a device for deburring and / or rounding of metal workpieces in a continuous process
DE3243598C2 (en)
DE2604233B2 (en) Grinding or polishing machine with suction
EP1552904A1 (en) Tool
EP3459679A1 (en) Device for generating an undefined finish on a surface of a metal workpiece in a continuous method
WO2021008760A1 (en) Grinding device
DE212012000205U1 (en) Abrasive element and its use in a processing device
EP3015222B1 (en) Grinding disc
DE202011001512U1 (en) milling tool
EP2340149B1 (en) Adjustable belt sander
EP3969224B1 (en) Orbital grinding machine having a braking device
AT4931U1 (en) MACHINES
EP0988928B1 (en) Grinding apparatus for grinding the edges of ceramic workpieces
EP1174219A2 (en) Grinding tool
DE10314695B4 (en) Belt sander
DE102016111155B4 (en) Finish band clamping device and finishing device
EP1940590A1 (en) Separating and grinding device, clamping device, and tool featuring vibration damping
EP3556513A1 (en) Grinding disc assembly
DE19920651A1 (en) Rotating machine grinding tool
DE202016103612U1 (en) Sanding belt adapter for decoiling machines
DE690946C (en) Device for grinding the cutting knife on double-weave looms
DE102006053420B4 (en) belt sander
EP0900631B1 (en) Abrasive tool
EP4241948A1 (en) Aggregate for machining an edge surface of a wood-based panel and method for machining the same

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAV Requested validation state of the european patent: fee paid

Extension state: MA

Effective date: 20211208