EP0491162A2 - Orbital sander - Google Patents

Orbital sander Download PDF

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Publication number
EP0491162A2
EP0491162A2 EP91119323A EP91119323A EP0491162A2 EP 0491162 A2 EP0491162 A2 EP 0491162A2 EP 91119323 A EP91119323 A EP 91119323A EP 91119323 A EP91119323 A EP 91119323A EP 0491162 A2 EP0491162 A2 EP 0491162A2
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EP
European Patent Office
Prior art keywords
grinding plate
orbital sander
molded
cast
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91119323A
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German (de)
French (fr)
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EP0491162A3 (en
Inventor
Ernst Kränzler
Vinzenz Dipl.-Ing. Härle (FH)
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0491162A2 publication Critical patent/EP0491162A2/en
Publication of EP0491162A3 publication Critical patent/EP0491162A3/en
Withdrawn legal-status Critical Current

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    • 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
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B24B23/046—Clamping or tensioning means for abrasive sheets

Definitions

  • the invention relates to an orbital sander according to the preamble of claim 1.
  • a generic orbital sander with an eccentric drive is known from US Pat. No. 3,375,616.
  • This has a sanding plate, which carries on its back a device for clamping the sanding paper and several elastic, column-like vibrating elements supported on the housing as well as a bearing seat for receiving a roller bearing, via which the rotary movement of the eccentric drive is converted into oscillating movements of the sanding plate.
  • the vibrating elements are elastically twistable and bendable, their ends are screwed to the sanding plate and the orbital sander housing.
  • the vibrating elements bind and guide the sanding plate on its working stroke. With regard to material selection and dimensioning, they are matched to the speed and eccentric stroke of the eccentric drive.
  • Orbital grinders are also known in which only a single vibrating element in the form of an elastic hose functions which takes over several vibrating elements.
  • the hose concentrically surrounds the motor output shaft and is attached to the sanding plate and the orbital sander housing in the support area by means of hose clamps.
  • the parts mentioned on the back of the sanding plate are manufactured separately and then have to be attached individually to the sanding plate in complex assembly steps.
  • the orbital sander according to the invention with the features of claim 1, on the other hand, has the advantage that the individual parts to be fastened to the grinding plate are produced in a single operation and, at the same time, are molded onto the grinding plate with high dimensional accuracy. This means that there is no need to rework the grinding plate and the orbital sander has significantly lower costs than with the conventional manufacturing process. Only little dirt and dust can stick to the transitions on the edges and throats of the grinding plate and their structures, which are rounded due to the manufacturing process, and which can also be removed particularly easily during cleaning.
  • the orbital sander 1 shown in Figure 1 has a symmetrically constructed grinding plate 3, the lower, free surface of which carries an abrasive paper 5. This is held at its two ends on the back of the grinding plate 3 by means of a clamping member 6, 7 each.
  • the tendon 6, 7 has the shape of a two-armed lever. This is supported on a spring 4, 8 at one end 2, 9. In a bearing block 11, 12, which is fastened to the grinding plate 3 in a cast connection, the tendon 7 is pivotally held on the back of the grinding plate 3 near the edge thereof. A section of the other end 10, 20 of the tensioning member 7 facing the sanding plate 3 holds the sanding paper 5 in place.
  • a plurality of plastic connecting parts 13, 15 are injection molded or molded onto the grinding plate 3. These are connected to a housing 17 on their sides facing away from the grinding plate 3 in receiving openings 14, 16 and thus hold the grinding plate 3 firmly on the housing 17.
  • the grinding plate 3 can be moved with a specific deflection stroke relative to the housing 17.
  • the housing 17 carries a handle 19 on its upper side and a motor 21 not shown in detail on the inside.
  • a drive shaft 23 with an eccentricity "e" between the motor 21 and the grinding plate 3 is guided in a ball bearing 25.
  • the ball bearing 25 is held with its outer ring in a bearing ring 27 made of plastic, which is fastened in a cast compound on the grinding plate 3.
  • the connection between the bearing ring 27 and the grinding plate 3 can be made particularly stiffening and secure by a collar-like protrusion of the edge of the opening in the sheet.
  • FIG. 1 A further exemplary embodiment of the grinding plate 30 of an orbital sander is shown in sections in FIG.
  • the grinding plate 30 carries a clamping device with a clamping member 37 pointing vertically upward, the end 40 of which serves as a handle.
  • the tensioning element 37 can be moved by hand into a release or tensioning position. In the clamping position, a clamping claw (not shown) of the clamping member 37 presses the end of the not shown sanding paper against the back of the grinding plate 30.
  • a spring holds the tendon 37 in its clamping position.
  • Elastic connecting parts 43, 45, a bearing ring 57 and one of the bearing blocks 51 are together in the outsert-molding process, i.e. integrally formed on the grinding plate 30 or connected to it.
  • the grinding plate is provided with a plastic coating applied in the cast composite, which serves as corrosion protection and as a cushion or as a sliding and pressure surface in order to enable the most uniform possible pressure distribution between the grinding plate and the workpiece surface.
  • all parts molded or cast onto the grinding plate are made of the same material in a single operation and cast with the sanding plate.
  • the roughly stamped, non-deburred carrier or core plate made of sheet metal which has a punched opening in the area of the bearing ring, for example, with an edge bent up into a collar, is inserted into a casting mold.
  • the inflowing, liquid plastic is injected into the cavities corresponding to the parts to be cast.
  • the individual parts molded onto the grinding plate in this way for example the bearing ring, always have the same, exact dimensions and, due to the design of the core plate, high stability.
  • the core plates can be roughly tolerated and therefore manufactured cheaply.
  • the molded parts are highly precise, completely compensate for the inaccuracies of the core plates and can be manufactured very inexpensively. This combination of the two materials increases the strength of the grinding plate and thus the stability of the orbital sander according to the invention - in comparison to the known orbital sander - by a multiple.
  • the grinding plate can consist of metal or plastic, provided that these are temperature-resistant during outsert molding.
  • the metal or plastic cores of the grinding plate which are preferably not designed with multiple perforations, have the advantage of a particularly intimate connection between the core and coating and a reduction in weight of the orbital sander.

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

Abstract

For an orbital sander (1) with a housing (17) provided with a handle (19) and a motor (21), fitted in the said housing, for driving a sanding plate (3) which is movably coupled to the housing (17) via at least one elastic connecting part (13, 15) and which, to transmit the orbital movement of the motor (21) to the sanding plate (3), carries a bearing location ring (27) as well as a clamping device (7) for abrasive paper (5), the object of reducing the manufacturing costs while improving the product quality is achieved in that at least one connecting part (13, 15) is integrally formed and fastened to the sanding plate (3) by a cast bond. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Schwingschleifer nach der Gattung des Anspruchs 1.The invention relates to an orbital sander according to the preamble of claim 1.

Ein gattungsgemäßer Schwingschleifer mit Exzenterantrieb ist aus der US-PS 3 375 616 bekannt. Dieser besitzt eine Schleifplatte, die auf ihrer Rückseite eine Vorrichtung zum Festklemmen des Schleifpapiers und mehrere elastische, säulenartige, sich am Gehäuse abstützende Schwingelemente sowie einen Lagersitz zur Aufnahme eines Wälzlagers trägt, über das die Drehbewegung des Exzenterantriebs in Schwingbewegungen der Schleifplatte umgewandelt wird. Die Schwingelemente sind elastisch verdreh- und biegefähig, ihre Enden sind mit der Schleifplatte und dem Schwingschleifergehäuse verschraubt. Die Schwingelemente fesseln und führen die Schleifplatte auf ihrem Arbeitshub. Sie sind bezüglich Werkstoffauswahl und Dimensionierung auf Drehzahl und Exzenterhub des Exzenterantriebs abgestimmt.A generic orbital sander with an eccentric drive is known from US Pat. No. 3,375,616. This has a sanding plate, which carries on its back a device for clamping the sanding paper and several elastic, column-like vibrating elements supported on the housing as well as a bearing seat for receiving a roller bearing, via which the rotary movement of the eccentric drive is converted into oscillating movements of the sanding plate. The vibrating elements are elastically twistable and bendable, their ends are screwed to the sanding plate and the orbital sander housing. The vibrating elements bind and guide the sanding plate on its working stroke. With regard to material selection and dimensioning, they are matched to the speed and eccentric stroke of the eccentric drive.

Es sind auch Schwingschleifer bekannt, bei denen nur ein einziges Schwingelement in Gestalt eines elastischen Schlauches die Funktion der mehreren Schwingelemente übernimmt. Der Schlauch umgibt die Abtriebswelle des Motors konzentrisch und ist an der Schleifplatte und am Schwingschleifergehäuse im Abstützbereich mittels Schlauchschellen befestigt.Orbital grinders are also known in which only a single vibrating element in the form of an elastic hose functions which takes over several vibrating elements. The hose concentrically surrounds the motor output shaft and is attached to the sanding plate and the orbital sander housing in the support area by means of hose clamps.

Die genannten Teile auf der Rückseite der Schleifplatte werden gesondert gefertigt und müssen dann einzeln in aufwendigen Montageschritten an der Schleifplatte befestigt werden.The parts mentioned on the back of the sanding plate are manufactured separately and then have to be attached individually to the sanding plate in complex assembly steps.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Schwingschleifer mit den Merkmalen des Anspruchs 1 hat dagegen den Vorteil, daß in einem einzigen Arbeitsgang die an der Schleifplatte zu befestigenden Einzelteile hergestellt und gleichzeitig mit hoher Maßgenauigkeit an der Schleifplatte angespritzt werden. Dadurch entfällt die Nachbearbeitung der Schleifplatte und für den Schwingschleifer entstehen erheblich geringere Kosten als nach dem herkömmliche Herstellungsverfahren. An den herstellungsbedingt gerundeten Übergängen an Kanten und Kehlen der Schleifplatte und deren Aufbauten kann sich nur wenig Schmutz und Staub halten, der außerdem beim Reinigen besonders leicht entfernt werden kann.The orbital sander according to the invention with the features of claim 1, on the other hand, has the advantage that the individual parts to be fastened to the grinding plate are produced in a single operation and, at the same time, are molded onto the grinding plate with high dimensional accuracy. This means that there is no need to rework the grinding plate and the orbital sander has significantly lower costs than with the conventional manufacturing process. Only little dirt and dust can stick to the transitions on the edges and throats of the grinding plate and their structures, which are rounded due to the manufacturing process, and which can also be removed particularly easily during cleaning.

Die Merkmale der Unteransprüche kennzeichnen vorteilhafte Ausgestaltungen der im Anspruch 1 beanspruchten Spannvorrichtung.The features of the subclaims characterize advantageous embodiments of the tensioning device claimed in claim 1.

Zeichnungdrawing

Die Erfindung ist nachfolgend anhand eines Ausführungsbeispieles mit zugehöriger Zeichnung erläutert. In der Zeichnung zeigt die

  • Fig. 1 eine seitliche Schnittdarstellung des Schwingschleifers,
  • Fig. 2 eine ausschnittsweise Draufsicht auf die Schleifplatte als montagebereites Einzelteil
The invention is explained below using an exemplary embodiment with the associated drawing. In the drawing, the
  • 1 is a sectional side view of the orbital sander,
  • Fig. 2 is a partial plan view of the grinding plate as a single part ready for assembly

Beschreibung des AusführungsbeispielsDescription of the embodiment

Der in Figur 1 dargestellte Schwingschleifer 1 hat eine symmetrisch aufgebaute Schleifplatte 3, deren untere, freie Fläche ein Schleifpapier 5 trägt. Dieses wird an seinen beiden Enden auf der Rückseite der Schleifplatte 3 mittels je eines Spanngliedes 6, 7 klemmend gehalten.The orbital sander 1 shown in Figure 1 has a symmetrically constructed grinding plate 3, the lower, free surface of which carries an abrasive paper 5. This is held at its two ends on the back of the grinding plate 3 by means of a clamping member 6, 7 each.

Das Spannglied 6, 7 hat die Form eines zweiarmigen Hebels. Dieser stützt sich an einer Feder 4, 8 an seinem einen Ende 2, 9 ab. In einem Lagerbock 11, 12, der an der Schleifplatte 3 im Gußverbund befestigt ist, ist das Spannglied 7 auf der Rückseite der Schleifplatte 3 nahe deren Rand schwenkbar gehalten. Ein auf die Schleifplatte 3 weisender Abschnitt des anderen Endes 10, 20 des Spanngliedes 7 hält das Schleifpapier 5 fest.The tendon 6, 7 has the shape of a two-armed lever. This is supported on a spring 4, 8 at one end 2, 9. In a bearing block 11, 12, which is fastened to the grinding plate 3 in a cast connection, the tendon 7 is pivotally held on the back of the grinding plate 3 near the edge thereof. A section of the other end 10, 20 of the tensioning member 7 facing the sanding plate 3 holds the sanding paper 5 in place.

An die Schleifplatte 3 angespritzt oder angegossen sind mehrere aus Kunststoff bestehende Verbindungsteile 13, 15. Diese sind auf ihren der Schleifplatte 3 abgewandten Seiten in Aufnahmeöffnungen 14, 16 mit einem Gehäuse 17 verbunden und halten damit die Schleifplatte 3 am Gehäuse 17 fest. Die Schleifplatte 3 ist mit einem bestimmten Auslenkhub relativ zum Gehäuse 17 bewegbar.A plurality of plastic connecting parts 13, 15 are injection molded or molded onto the grinding plate 3. These are connected to a housing 17 on their sides facing away from the grinding plate 3 in receiving openings 14, 16 and thus hold the grinding plate 3 firmly on the housing 17. The grinding plate 3 can be moved with a specific deflection stroke relative to the housing 17.

Das Gehäuse 17 trägt auf seiner Oberseite einen Griff 19 und im Inneren einen nicht im einzelnen dargestellten Motor 21.The housing 17 carries a handle 19 on its upper side and a motor 21 not shown in detail on the inside.

Eine Antriebswelle 23 mit einer Exzentrizität "e" zwischen Motor 21 und der Schleifplatte 3 ist in einem Kugellager 25 geführt. Das Kugellager 25 wird mit seinem Außenring in einem aus Kunststoff bestehenden Lagerring 27 gehalten, der im Gußverbund auf der Schleifplatte 3 befestigt ist. Die Verbindung zwischen dem Lagerring 27 und der Schleifplatte 3 kann dabei durch eine kragenartig nach oben weisenden Ausstülpung des Randes der Öffnung im Blech besonders versteifend und sicher gestaltet sein.A drive shaft 23 with an eccentricity "e" between the motor 21 and the grinding plate 3 is guided in a ball bearing 25. The ball bearing 25 is held with its outer ring in a bearing ring 27 made of plastic, which is fastened in a cast compound on the grinding plate 3. The connection between the bearing ring 27 and the grinding plate 3 can be made particularly stiffening and secure by a collar-like protrusion of the edge of the opening in the sheet.

In Figur 2 ist abschnittsweise ein weiteres Ausführungsbeispiel der Schleifplatte 30 eines Schwingschleifers gezeigt. Die Schleifplatte 30 trägt eine Klemmvorrichtung mit einem senkrecht nach oben weisenden Spannglied 37, dessen Ende 40 als Griff dient. Über diesen kann das Spannglied 37 per Hand in eine Löse- oder Spannstellung bewegt werden. In der Spannstellung drückt eine nichtdargestellte Spannkralle des Spanngliedes 37 das Ende des nichtdargestellten Schleifpapiers gegen die Rückseite der Schleifplatte 30.A further exemplary embodiment of the grinding plate 30 of an orbital sander is shown in sections in FIG. The grinding plate 30 carries a clamping device with a clamping member 37 pointing vertically upward, the end 40 of which serves as a handle. The tensioning element 37 can be moved by hand into a release or tensioning position. In the clamping position, a clamping claw (not shown) of the clamping member 37 presses the end of the not shown sanding paper against the back of the grinding plate 30.

Eine nichtdargestellte Feder hält das Spannglied 37 in seiner Spannposition. Elastische Verbindungsteile 43, 45, ein Lagerring 57 und einer der Lagerböcke 51, sind gemeinsam im outsert-molding Verfahren, d.h. im Verbundguß an die Schleifplatte 30 angeformt bzw. mit dieser verbunden.A spring, not shown, holds the tendon 37 in its clamping position. Elastic connecting parts 43, 45, a bearing ring 57 and one of the bearing blocks 51 are together in the outsert-molding process, i.e. integrally formed on the grinding plate 30 or connected to it.

Bei einem nichtdargestellten Ausführungsbeispiel der Erfindung ist die Schleifplatte mit einem im Gußverbund aufgebrachten Kunststoffüberzug versehen, der als Korrosionsschutz und als Polster bzw. als Gleit- und Druckfläche dient, um eine möglichst gleichmäßige Druckverteilung zwischen der Schleifplatte und der Werkstückoberfläche zu ermöglichen.In a non-illustrated embodiment of the invention, the grinding plate is provided with a plastic coating applied in the cast composite, which serves as corrosion protection and as a cushion or as a sliding and pressure surface in order to enable the most uniform possible pressure distribution between the grinding plate and the workpiece surface.

Bei einem weiteren, nichtdargestellten Ausführungsbeispiel sind alle an die Schleifplatte angespritzten oder angegossenen Teile aus einem gleichen Werkstoff in einem einzigen Arbeitsgang hergestellt sowie mit der Schleifplatte vergossen. Dazu wird die grob gestanzte, nicht entgratete Träger- oder Kernplatte aus Blech, die beispielsweise im Bereich des Lagerringes einen ausgestanzten Durchbruch mit zu einem Kragen hochgebogenem Rand aufweist, in eine Gußform eingelegt. Der einströmende, flüssige Kunststoff wird in die den zu gießenden Teilen entsprechenden Hohlräume eingespritzt. Die so an die Schleifplatte angeformten Einzelteile, beispielsweise der Lagerring, haben stets gleiche, genaue Maße und bedingt durch die Ausgestaltung der Kernplatte eine hohe Stabilität. Hier vereinen sich folgende Vorteile: Die Kernplatten können grob toleriert und somit billig hergestellt werden. Die Anspritzteile sind hochgenau, gleichen die Ungenauigkeiten der Kernplatten völlig aus und sind sehr kostengünstig herstellbar. Diese Kombination der zwei Werkstoffe erhöht die Festigkeit der Schleifplatte und damit die Stabilität des erfindungsgemäßen Schwingschleifers - im Vergleich zu den bekannten Schwingschleifern - um ein Mehrfaches.In a further embodiment, not shown, all parts molded or cast onto the grinding plate are made of the same material in a single operation and cast with the sanding plate. For this purpose, the roughly stamped, non-deburred carrier or core plate made of sheet metal, which has a punched opening in the area of the bearing ring, for example, with an edge bent up into a collar, is inserted into a casting mold. The inflowing, liquid plastic is injected into the cavities corresponding to the parts to be cast. The individual parts molded onto the grinding plate in this way, for example the bearing ring, always have the same, exact dimensions and, due to the design of the core plate, high stability. The following advantages are combined here: The core plates can be roughly tolerated and therefore manufactured cheaply. The molded parts are highly precise, completely compensate for the inaccuracies of the core plates and can be manufactured very inexpensively. This combination of the two materials increases the strength of the grinding plate and thus the stability of the orbital sander according to the invention - in comparison to the known orbital sander - by a multiple.

Die Schleifplatte kann bei weiteren Ausführungsbeispielen aus Metall oder Kunststoff bestehen, sofern diese beim outsert molding temperaturbeständig sind.In further exemplary embodiments, the grinding plate can consist of metal or plastic, provided that these are temperature-resistant during outsert molding.

Die nicht dargestellten, vorzugsweise vielfach gelocht ausgestalteten Metall- oder Kunststoff-Kerne der Schleifplatte haben den Vorteil einer besonders innigen Verbindung zwischen Kern und Überzug sowie einer Gewichtsminderung des Schwingschleifers.The metal or plastic cores of the grinding plate, which are preferably not designed with multiple perforations, have the advantage of a particularly intimate connection between the core and coating and a reduction in weight of the orbital sander.

Claims (8)

Schwingschleifer (1) mit einem Gehäuse (17) und einem darin eingebauten Motor (21) mit einer Antriebswelle zum exzentrischen Antrieb einer Schleifplatte (3), die über mindestens ein elastisches Verbindungsteil (13, 15) bewegbar mit dem Gehäuse (17) gekoppelt ist und die zur Übertragung der Exzenterbewegung der Antriebswelle auf die Schleifplatte (3) einen Lagerring (27) sowie darüber hinaus eine Klemmvorrichtung (7) für Schleifpapier (5) trägt, dadurch gekennzeichnet, daß das mindestens eine Verbindungsteil (13, 15) an die Schleifplatte (3) angespritzt oder angegossen ist.Orbital sander (1) with a housing (17) and a motor (21) installed therein with a drive shaft for eccentrically driving a grinding plate (3) which is movably coupled to the housing (17) via at least one elastic connecting part (13, 15) and which carries a bearing ring (27) as well as a clamping device (7) for sandpaper (5) for transmitting the eccentric movement of the drive shaft to the grinding plate (3), characterized in that the at least one connecting part (13, 15) to the grinding plate (3) is molded or molded. Schwingschleifer nach Anspruch 1, dadurch gekennzeichnet, daß außerdem zumindest ein Teil der Klemmvorrichtung (7) an die Schleifplatte (3) angespritzt oder angegossen ist.Orbital sander according to claim 1, characterized in that at least a part of the clamping device (7) is injection molded or cast onto the grinding plate (3). Schwingschleifer nach Anspruch 2, dadurch gekennzeichnet, daß der Lagerring (27) an die Schleifplatte (3) angespritzt oder angegossen ist.Orbital sander according to claim 2, characterized in that the bearing ring (27) is injection molded or cast onto the grinding plate (3). Schwingschleifer nach Anspruch 3, dadurch gekennzeichnet, daß die Schleifplatte (3) vielfach gelocht ist und aus Kunststoff oder Blech besteht.Orbital sander according to claim 3, characterized in that the grinding plate (3) is perforated many times and consists of plastic or sheet metal. Schwingschleifer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet daß die Schleifplatte (3) einen angespritzten oder angegossenen Überzug aus Kunststoff trägt.Orbital sander according to one of claims 1 to 4, characterized in that the grinding plate (3) has an injection-molded or cast-on plastic cover. Schwingschleifer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die von der Schleifplatte (3) getragenen Einzelteile und der Überzug aus gemeinsam angespritztem oder angegossenem einheitlichem Werkstoff bestehen.Orbital sander according to one of claims 1 to 6, characterized in that the individual parts carried by the grinding plate (3) and the cover consist of a uniformly molded or cast on uniform material. Schwingschleifer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die von der Schleifplatte (3) getragenen Einzelteile und der Überzug aus gemeinsam angespritzten oder angegossenen unterschiedlichen Werkstoffen, insbesondere Kunststoffen, bestehen.Orbital sander according to one of claims 1 to 5, characterized in that the individual parts carried by the grinding plate (3) and the coating consist of different materials, in particular plastics, which are injection-molded or cast on together. Verfahren zur Herstellung eines Schwingschleifers, dadurch gekennzeichnet, daß insbesondere Metallflächen einer Schleifplatte im outsert-molding Prozess mit Kunststoff überzogen werden, wobei in einem einzigen Arbeitsgang Funktionsflächen und Zusatzteile angespritzt werden.Process for producing an orbital sander, characterized in that in particular metal surfaces of a grinding plate are coated with plastic in the outsert-molding process, functional surfaces and additional parts being molded on in a single operation.
EP19910119323 1990-12-19 1991-11-13 Orbital sander Withdrawn EP0491162A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4040578 1990-12-19
DE19904040578 DE4040578A1 (en) 1990-12-19 1990-12-19 ORBITAL GRINDERS

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EP0491162A2 true EP0491162A2 (en) 1992-06-24
EP0491162A3 EP0491162A3 (en) 1992-12-16

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Cited By (3)

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US6179696B1 (en) * 1998-04-29 2001-01-30 Black & Decker Inc. Powered oscillating hand tool
CN107791135A (en) * 2016-08-31 2018-03-13 南京德朔实业有限公司 Sander
CN116423350A (en) * 2023-06-12 2023-07-14 佛山市侨泽铝业有限公司 End face polishing device for luminous curtain rail production

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US6260591B1 (en) 1999-08-11 2001-07-17 Black & Decker Inc. Biscuit joiner

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FR2255999A1 (en) * 1973-12-31 1975-07-25 Stoll Kg Kurt Oscillating plate sander with perforated plate - has annular seal of cap engaging rear plate face to form dust passage
DE7713994U1 (en) * 1977-05-04 1978-11-02 Robert Bosch Gmbh, 7000 Stuttgart ORBITAL GRINDER

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US3375616A (en) * 1965-01-11 1968-04-02 Portable Electric Tools Inc Dual motion surface-dressing machine
FR2255999A1 (en) * 1973-12-31 1975-07-25 Stoll Kg Kurt Oscillating plate sander with perforated plate - has annular seal of cap engaging rear plate face to form dust passage
DE7713994U1 (en) * 1977-05-04 1978-11-02 Robert Bosch Gmbh, 7000 Stuttgart ORBITAL GRINDER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179696B1 (en) * 1998-04-29 2001-01-30 Black & Decker Inc. Powered oscillating hand tool
USRE40345E1 (en) * 1998-04-29 2008-05-27 Black & Decker, Inc. Powered oscillating hand tool
CN107791135A (en) * 2016-08-31 2018-03-13 南京德朔实业有限公司 Sander
CN116423350A (en) * 2023-06-12 2023-07-14 佛山市侨泽铝业有限公司 End face polishing device for luminous curtain rail production
CN116423350B (en) * 2023-06-12 2023-09-01 佛山市侨泽铝业有限公司 End face polishing device for luminous curtain rail production

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EP0491162A3 (en) 1992-12-16

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