EP1291134A1 - Polishing plate - Google Patents

Polishing plate Download PDF

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Publication number
EP1291134A1
EP1291134A1 EP02017022A EP02017022A EP1291134A1 EP 1291134 A1 EP1291134 A1 EP 1291134A1 EP 02017022 A EP02017022 A EP 02017022A EP 02017022 A EP02017022 A EP 02017022A EP 1291134 A1 EP1291134 A1 EP 1291134A1
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EP
European Patent Office
Prior art keywords
plate
sanding
spring
grinding
teeth
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.)
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EP02017022A
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German (de)
French (fr)
Inventor
Steffen Wuensch
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1291134A1 publication Critical patent/EP1291134A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention is based on a grinding plate according to the preamble of claim 1.
  • a grinding plate is known from US Pat. No. 5,309,682 identifies the lower, separate sanding pad on the underside a sanding sheet can be attached. With its back is the sanding pad with Velcro fastener on one made of plastic existing round support plate releasably attachable to the Can be attached to the center of an output shaft of a hand grinder is. The back of the support plate is behind directed above and facing the output shaft.
  • the sanding pad is attached to the support plate using a Velcro fastener can be coupled and transmits the movement of the support plate or the output shaft on the sanding sheet.
  • the grinding pads of the known grinding plate can be different be thick and can be used to a limited extent Grinding concave or convex curved surfaces become. In such applications, however Adaptation of the sanding pad to certain radii of curvature of workpiece surfaces limited to relatively small Curvatures, d. H. Radii of curvature of the workpiece surface of more than 200 mm.
  • the invention with the features of the characterizing part of claim 1 has the advantage that workpiece surfaces with radii of curvature ⁇ 200 mm with even contact pressure and even grinding removal can be processed. Both concave and convex can be curved Machined surfaces with one and the same sanding plate become.
  • the plate spring or the leaf spring as a round, flat ring with radially inward tooth profile is configured, with a hub on the radially after holding inward-facing tooth tips is easy Way a bistable spring element can be realized, which at Automatically exceed a certain bending position pivots further into a mirror-symmetrical bending position and remains in it. So is a concave pre-curved one Leaf spring or disc spring can be folded into a convex position.
  • leaf or disc spring with polyurethane or the like foam is foamed, is the spring characteristic by selecting the foam in conjunction with its dimensions can be determined particularly well.
  • the sanding plate has dust extraction holes that axially pass through the grinding disc in the area of the tooth gaps, is the dust extraction without interfering with the spring characteristics the leaf or disc spring possible.
  • the invention is based on an exemplary embodiment explained with accompanying drawing.
  • FIG. 1 shows a hand tool 10 with a housing 12, the above with an unspecified handle Power button carries.
  • An output shaft protrudes from the housing 12 below 13 on which a round grinding plate 14 by means of Screw 15 is held in a rotationally fixed, which is the Rotary movement of the output shaft 13 follows.
  • the grinding plate 14 has a central hub 16 that a has central, axial, through hole 17, through that the bolt 15 occurs and so the back of the hub 16 holds on the output shaft 13.
  • the center hub is centered a flat, ring-like disc spring 22, the more essential Is part of a support plate 18 ( Figure 4.6).
  • the Disc spring 22 carries a tooth profile directed radially inwards 34 with tooth gaps 36 and flat, tongue-like teeth 38. These occur with their radially inner ends into the outer edge of the flat, disk-like hub 16.
  • the plate spring 22 is on both sides with polyurethane or Similar foam foams and thus forms the one Foam cushion 20 surrounding support plate 18.
  • the foam cushion 20 has a Velcro fabric on its underside 27, to which a sanding sheet 29 can be attached.
  • the existing of disc spring 22 and grinding pad 20 Sanding plate 14 has a plurality of axially penetrating dust extraction holes 40, of which only one is shown and that from the back with unspecified suction is predictable.
  • the grinding plate On the hub 16 is the grinding plate with a screw 15 14 attached to the drive shaft 13 and is therefore light interchangeable.
  • Plastic existing hub 16 is the plate spring 22,23, 24,25 connected, which is designed as a bistable switching spring is and forms a form-fitting insert that the foamed PU or integral foam, which on both sides Disc spring 22 forms abrasive pad 20 forms, holds.
  • the plate spring 18 enables switching and control functions perform. It is used in its in polyurethane foam embedded layer under force to one convex or concave backing pad / backing pad 14 to be deformed. Leave with such grinding plates predominantly spherical or spherical shapes evenly grind.
  • the compliance / deformability of the Disc spring or the grinding plate / grinding plate 14, 54 allowed grinding of workpiece surfaces with almost flat surfaces Shape. Is about the flatness of the grinding plate or If the grinding plates are pressed further axially, a Snap effect, and the sanding plate or the sanding plate takes the reverse arched shape, i.e. H. from the concave in the convex shape.
  • the grinding plate 14 shown in Figure 2 is without a hand tool shown and is basically with the identical to Figure 1.
  • Figure 3 shows the plate spring 22 in longitudinal section, the Truncated cone shape of the plate spring 22 is particularly clear.
  • the outer, continuous ring 32 can be seen, the radially inward into tooth profile 34 with teeth 38 transforms.
  • Figure 4 shows the top view of the plate spring 22 according to FIG. 3, the tooth profile 34 being particularly clear, whose teeth extend radially inwards, evenly spaced by tooth gaps 36.
  • Figures 5, 6 show another embodiment of a bistable disc spring 23, which is different from the disc spring 22 differs in that teeth 78 are wider than that There are tooth gaps 76 and the tips of the teeth 38 to extend further into the center of the circular disc spring, so that the spring characteristic is harder.
  • Figure 7 shows in the force-displacement diagram, as with increasing Force is reached to a maximum. With increasing strength the counterforce of the spring less; if flat, this jumps Spring over and is out of this position when grinding concave surfaces can be loaded up to a maximum.
  • FIG. 8 shows a characteristic curve of the plate spring that is obtained in this way is that the spring force increases with constant pressure and snapped before the flat position. Will the disc spring 22 relieved, the return to the initial state on. With such a characteristic can machined only concave and convex workpiece surfaces become. Sanding flat surfaces is only possible with considerable qualitative concessions possible.

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

Abstract

The grinding plate (14) has a support plate (18)supporting on its underside an elastic grinding pad (20). The support plate is in the form of an especially bistable plate or leaf spring (22) as round flat ring with radially inward pointing teeth (38) the ends of which are joined to a hub (16). The support plate and grinder plate have axial holes through for sucking up dust.

Description

Stand der TechnikState of the art

Die vorliegende Erfindung geht aus von einer Schleifplatte nach dem Oberbegriff des Anspruchs 1.The present invention is based on a grinding plate according to the preamble of claim 1.

Durch die US 5309682 ist ein Schleifteller bekannt, der ein unteres, separates Schleifkissen ausweist, an dessen Unterseite ein Schleifblatt befestigbar ist. Mit seiner Rückseite ist das Schleifkissen mit Klettverschluß an einer aus Kunststoff bestehenden runden Stützplatte lösbar befestigbar, die mittig an einer Abtriebswelle einer Handschleifmaschine befestigbar ist. Dabei ist die Rückseite der Stützplatte nach oben gerichtet und der Abtriebswelle zugewandt.A grinding plate is known from US Pat. No. 5,309,682 identifies the lower, separate sanding pad on the underside a sanding sheet can be attached. With its back is the sanding pad with Velcro fastener on one made of plastic existing round support plate releasably attachable to the Can be attached to the center of an output shaft of a hand grinder is. The back of the support plate is behind directed above and facing the output shaft.

Das Schleifkissen ist an der Stützplatte mittels Klettverschluss ankuppelbar und überträgt die Bewegung der Stützplatte bzw. der Abtriebswelle auf das Schleifblatt.The sanding pad is attached to the support plate using a Velcro fastener can be coupled and transmits the movement of the support plate or the output shaft on the sanding sheet.

Die Schleifkissen der bekannten Schleifplatte können unterschiedlich dick sein und können in begrenztem Maße zum Schleifen konkaver bzw. konvex gewölbter Oberflächen eingesetzt werden. Bei derartigen Einsatzfällen ist jedoch die Anpassung des Schleifkissens an bestimmte Krümmungsradien von Werkstückoberflächen begrenzt auf verhältnismäßig geringe Krümmungen, d. h. Krümmungsradien der Werkstückoberfläche von mehr als 200 mm.The grinding pads of the known grinding plate can be different be thick and can be used to a limited extent Grinding concave or convex curved surfaces become. In such applications, however Adaptation of the sanding pad to certain radii of curvature of workpiece surfaces limited to relatively small Curvatures, d. H. Radii of curvature of the workpiece surface of more than 200 mm.

Durch die US 5 931 727 ist eine Schleifhandwerkzeugmaschine bekannnt, dessen Schleifkissen mit Granulat gefüllt ist, wobei dessen Unterseite durch Andrücken an profilierte Werkstücke deren Negativform annimmt, die durch Vakuum fixiert wird. Damit sind zwar in guter Qualität komplizierte Oberflächenformen schleifbar, die Maschine ist aber aufwendig herzustellen.Through the US 5 931 727 is a grinding hand machine tool known whose sanding pad is filled with granules, whereby its underside by pressing on profiled workpieces whose negative form takes on, which is fixed by vacuum becomes. This makes complex surface shapes of good quality grindable, but the machine is complex manufacture.

Vorteile der ErfindungAdvantages of the invention

Die Erfindung mit den Merkmalen des kennzeichnenden Teils von Anspruch 1 hat den Vorteil, dass auch Werkstückoberflächen mit Krümmungsradien < 200 mm mit gleichmäßigem Anpressdruck und gleichmäßigem Schleifabtrag bearbeitet werden können. Dabei können sowohl konkave als auch konvex gekrümmte Oberflächen mit ein- und derselben Schleifplatte bearbeitet werden. Dadurch, dass die Stützplatte als Blattfeder oder Tellerfeder ausgestaltet ist, ist eine hohe Elastizität der Schleifplatte bei verhältnismäßig hoher Biegesteifigkeit gewährleistet, so dass damit ein hoher Schleifabtrag realisierbar ist.The invention with the features of the characterizing part of claim 1 has the advantage that workpiece surfaces with radii of curvature <200 mm with even contact pressure and even grinding removal can be processed. Both concave and convex can be curved Machined surfaces with one and the same sanding plate become. The fact that the support plate as a leaf spring or Disc spring is designed, the elasticity is high Sanding plate with relatively high bending rigidity guaranteed, so that a high abrasion can be achieved is.

Dadurch, dass die Tellerfeder bzw. die Blattfeder als runder, flacher Ring mit radial nach innen weisendem Zahnprofil ausgestaltet ist, wobei sich eine Nabe an den radial nach innen gerichteten Zahnspitzen festhält, ist auf einfache Weise ein bistabiles Federelement realisierbar, das beim Überschreiten einer bestimmten Biegeposition selbsttätig weiter in eine spiegelsymmetrische Biegeposition schwenkt und darin verbleibt. So ist eine konkav vorgebogene derartige Blattfeder bzw. Tellerfeder in eine konvexe Position umklappbar. Because the plate spring or the leaf spring as a round, flat ring with radially inward tooth profile is configured, with a hub on the radially after holding inward-facing tooth tips is easy Way a bistable spring element can be realized, which at Automatically exceed a certain bending position pivots further into a mirror-symmetrical bending position and remains in it. So is a concave pre-curved one Leaf spring or disc spring can be folded into a convex position.

Dadurch, dass die Blatt- bzw. Tellerfeder mit Polyurethan oder dergleichen Schaum umschäumt ist, ist die Federcharakteristik durch Auswahl des Schaumstoffs in Verbindung mit dessen Dimensionierung besonders gut festlegbar.The fact that the leaf or disc spring with polyurethane or the like foam is foamed, is the spring characteristic by selecting the foam in conjunction with its dimensions can be determined particularly well.

Dadurch, dass die Schleifplatte Staubabsauglöcher hat, die im Bereich der Zahnlücken den Schleifteller axial durchtreten, ist die Staubabsaugung ohne Eingriff in die Federcharakteristik der Blatt- bzw. Tellerfeder möglich.Because the sanding plate has dust extraction holes that axially pass through the grinding disc in the area of the tooth gaps, is the dust extraction without interfering with the spring characteristics the leaf or disc spring possible.

Dadurch, dass bei einer rechteckigen Schleifplatte zwei parallele Außenränder bistabil umkippbar sind, sind bspw. mit einem Schwingschleifer langgestreckte, halbrohrartige Profile gleichmäßig bearbeitbar.The fact that with a rectangular sanding plate two parallel The outer edges are bistable and can be tipped over, for example an orbital sander, elongated, semi-tubular profiles editable evenly.

Zeichnungdrawing

Nachstehend ist die Erfindung anhand eines Ausführungsbeispiels mit zugehöriger Zeichnung erläutert.The invention is based on an exemplary embodiment explained with accompanying drawing.

Es zeigen:

  • Figur 1 den Längsschnitt einer Handwerkzeugmaschine mit erfindungsgemäßer, runder Schleifplatte;
  • Figur 2 die in ihre konvexe Position gebogene Schleifplatte gemäß Figur 1;
  • Figur 3 einen Längsschnitt der Tellerfeder der Schleifplatten nach Figur 1 und 2;
  • Figur 4 eine Draufsicht auf die Tellerfeder gemäß Figur 3; Figur 5 einen Längsschnitt durch ein weiteres Ausführungsbeispiel einer Tellerfeder;
  • Figur 6 eine Draufsicht auf die Tellerfeder gemäß Figur 5; und Figuren 7, 8 Diagramme der Federcharakteristik der Tellerfedern.
    • Show it:
  • 1 shows the longitudinal section of a hand machine tool with a round grinding plate according to the invention;
  • 2 shows the grinding plate bent into its convex position according to FIG. 1;
  • 3 shows a longitudinal section of the plate spring of the grinding plates according to Figures 1 and 2;
  • Figure 4 is a plan view of the plate spring according to Figure 3; Figure 5 shows a longitudinal section through a further embodiment of a plate spring;
  • FIG. 6 shows a top view of the plate spring according to FIG. 5; and Figures 7, 8 diagrams of the spring characteristic of the disc springs.

    • Ausführungsbeispielembodiment

    Figur 1 zeigt eine Handwerkzeugmaschine 10 mit einem Gehäuse 12, das oben einen nicht näher bezeichneten Handgriff mit Einschalttaste trägt. Unten ragt aus dem Gehäuse 12 eine Abtriebswelle 13, an der eine runde Schleifplatte 14 mittels Schraubbolzen 15 drehfest gehalten wird, die dadurch der Drehbewegung der Abtriebwelle 13 folgt.Figure 1 shows a hand tool 10 with a housing 12, the above with an unspecified handle Power button carries. An output shaft protrudes from the housing 12 below 13 on which a round grinding plate 14 by means of Screw 15 is held in a rotationally fixed, which is the Rotary movement of the output shaft 13 follows.

    Die Schleifplatte 14 weist eine mittige Nabe 16 auf, die ein zentrales, axiales, durchgehendes Loch 17 aufweist, durch das der Schraubbolzen 15 tritt und so die Rückseite der Nabe 16 an der Abtriebswelle 13 festhält. Die mittige Nabe zentriert eine flache, ringartige Tellerfeder 22, die wesentlicher Bestandteil einer Stützplatte 18 ist (Figur 4,6). Die Tellerfeder 22 trägt ein radial nach innen gerichtetes Zahnprofil 34 mit Zahnlücken 36 und flachen, zungenartigen Zähnen 38. Diese treten mit ihren radial innenliegenden Enden in den äußeren Rand der flachen, scheibenartigen Nabe 16.The grinding plate 14 has a central hub 16 that a has central, axial, through hole 17, through that the bolt 15 occurs and so the back of the hub 16 holds on the output shaft 13. The center hub is centered a flat, ring-like disc spring 22, the more essential Is part of a support plate 18 (Figure 4.6). The Disc spring 22 carries a tooth profile directed radially inwards 34 with tooth gaps 36 and flat, tongue-like teeth 38. These occur with their radially inner ends into the outer edge of the flat, disk-like hub 16.

    Die Tellerfeder 22 ist mit beidseitig mit Polyurethan oder ähnlichem Schaumstoff umschäumt und bildet damit die von einem Schaumkissen 20 umgebene Stützplatte 18.The plate spring 22 is on both sides with polyurethane or Similar foam foams and thus forms the one Foam cushion 20 surrounding support plate 18.

    An seiner Unterseite trägt das Schaumkissen 20 ein Klettgewebe 27, an dem ein Schleifblatt 29 befestigbar ist.The foam cushion 20 has a Velcro fabric on its underside 27, to which a sanding sheet 29 can be attached.

    Die aus Tellerfeder 22 und Schleifkissen 20 bestehende Schleifplatte 14 weist mehrere axial durchtretende Staubabsauglöcher 40 auf, von denen nur eines dargestellt ist und das von der Rückseite her mit nicht näher bezeichneten Absaugmitteln versehbar ist. The existing of disc spring 22 and grinding pad 20 Sanding plate 14 has a plurality of axially penetrating dust extraction holes 40, of which only one is shown and that from the back with unspecified suction is predictable.

    An die Nabe 16 ist mit einer Schraube 15 die Schleifplatte 14 an der Antriebswelle 13 befestigt und ist somit leicht austauschbar.On the hub 16 is the grinding plate with a screw 15 14 attached to the drive shaft 13 and is therefore light interchangeable.

    Mit der aus wärmebeständigem, hochfestem und hochstabilem Kunststoff bestehenden Nabe 16 ist die Tellerfeder 22,23, 24,25 verbunden, die als bistabile Schaltfeder ausgestaltet ist und ein formschlüssiges Einlegeteil bildet, das den umschäumten PU- oder Integralschaum, der das beidseitig die Tellerfeder 22 umgreifende Schleifkissen 20 bildet, festhält.With the made of heat-resistant, high-strength and highly stable Plastic existing hub 16 is the plate spring 22,23, 24,25 connected, which is designed as a bistable switching spring is and forms a form-fitting insert that the foamed PU or integral foam, which on both sides Disc spring 22 forms abrasive pad 20 forms, holds.

    Die Tellerfeder 18 ermöglicht es, Schalt- und Regelfunktionen auszuführen. Sie wird dazu verwendet, in ihrer in Polyurethanschaum eingebetteten Lage unter Krafteinwirkung zu einem konvexen oder konkaven Schleifteller/Schleifplatte 14 verformt zu werden. Mit derartigen Schleiftellern lassen sich vorwiegend kugelige oder ballige Formen gleichmäßig schleifend bearbeiten. Die Nachgiebigkeit/Verformbarkeit der Tellerfeder bzw. des Schleiftellers/Schleifplatte 14, 54 erlaubt ein Schleifen von Werkstückoberflächen mit nahezu ebener Form. Wird über die Planlage der Schleifplatte bzw. Schleiftellers weiter axial gedrückt, kommt es zu einem Schnappeffekt, und die Schleifplatte bzw. der Schleifteller nimmt die umgekehrt gewölbte Form an, d. h. von der konkaven in die konvexe Form.The plate spring 18 enables switching and control functions perform. It is used in its in polyurethane foam embedded layer under force to one convex or concave backing pad / backing pad 14 to be deformed. Leave with such grinding plates predominantly spherical or spherical shapes evenly grind. The compliance / deformability of the Disc spring or the grinding plate / grinding plate 14, 54 allowed grinding of workpiece surfaces with almost flat surfaces Shape. Is about the flatness of the grinding plate or If the grinding plates are pressed further axially, a Snap effect, and the sanding plate or the sanding plate takes the reverse arched shape, i.e. H. from the concave in the convex shape.

    Damit wird ein Schleifen konkaver Flächen erleichtert, z.B. runder Behälter bzw. Karosserieteile, wobei sich der Schleifteller durch die elastische Feder leicht der vorgegebenen Kontur anpassen kann.This makes grinding concave surfaces easier, e.g. round container or body parts, the Sanding disc easily by the elastic spring of the specified Can adjust contour.

    Die in Figur 2 dargestellte Schleifplatte 14 ist ohne Handwerkzeugmaschine dargestellt und ist grundsätzlich mit der gemäß Figur 1 identisch. Im Unterschied zu Figur 1 ist der äußere Rand der Stützplatte 18 mit dem Schleifkissen 20 nach oben gebogen, also umgekehrt und verharrt in ihrer Position, angepaßt an eine zu bearbeitende konvexe Werkstückoberfläche.The grinding plate 14 shown in Figure 2 is without a hand tool shown and is basically with the identical to Figure 1. In contrast to Figure 1 is the outer edge of the support plate 18 with the sanding pad 20 after bent at the top, i.e. the other way round and remains in its position, adapted to a convex workpiece surface to be machined.

    Bevorzugt zur Anwendung gelangen zwei verschiedene Anwendungen der Federcharakteristiken für die Teller- bzw. Blattfeder 22,23,24.Two different applications are preferred the spring characteristics for the plate or leaf spring 22,23,24.

    Figur 3 zeigt die Tellerfeder 22 im Längsschnitt, wobei die Kegelstumpfform der Tellerfeder 22 besonders deutlich wird. Dabei ist der äußere, durchgehende Ring 32 erkennbar, der radial nach innen in das Zahnprofil 34 mit den Zähnen 38 übergeht.Figure 3 shows the plate spring 22 in longitudinal section, the Truncated cone shape of the plate spring 22 is particularly clear. The outer, continuous ring 32 can be seen, the radially inward into tooth profile 34 with teeth 38 transforms.

    Figur 4 zeigt die Draufsicht auf der Tellerfeder 22 gemäß Figur 3, wobei das Zahnprofil 34 besonders deutlich wird, dessen Zähne sich radial nach innen erstrecken, gleichmäßig beabstandet durch Zahnlücken 36.Figure 4 shows the top view of the plate spring 22 according to FIG. 3, the tooth profile 34 being particularly clear, whose teeth extend radially inwards, evenly spaced by tooth gaps 36.

    Die Figuren 5, 6 zeigen ein weiteres Ausführungsbeispiel einer bistabilen Tellerfeder 23, die sich von der Tellerfeder 22 dadurch unterscheidet, dass die Zähne 78 breiter als die Zahnlücken 76 sind und sich die Spitzen der Zähne 38 bis weiter in die Mitte der kreisförmigen Tellerfeder erstrekken, so daß die Federcharakteristik härter ist.Figures 5, 6 show another embodiment of a bistable disc spring 23, which is different from the disc spring 22 differs in that teeth 78 are wider than that There are tooth gaps 76 and the tips of the teeth 38 to extend further into the center of the circular disc spring, so that the spring characteristic is harder.

    Figur 7 zeigt im Kraft-Weg-Diagramm, wie bei ansteigender Kraft ein Maximum erreicht wird. Mit zunehmender Kraft wird die Gegenkraft der Feder geringer; bei Planlage springt diese Feder um und ist aus dieser Lage heraus beim Schleifen konkaver Flächen bis zu einem Maximum belastbar.Figure 7 shows in the force-displacement diagram, as with increasing Force is reached to a maximum. With increasing strength the counterforce of the spring less; if flat, this jumps Spring over and is out of this position when grinding concave surfaces can be loaded up to a maximum.

    Mit einer Feder gemäß Charakteristik von Figur 7 kann konkav, konvex und auf ebenen Flächen geschliffen werden. Im Null-Durchgang der Federkraft ist ein labiler Zustand erreicht. Von hier kann der Schleifteller entweder in den konkaven oder den konvexen Zustand mit geringem Kraftaufwand gebracht werden.With a spring according to the characteristic of FIG. 7, concave, be convex and ground on flat surfaces. in the The spring force has passed zero and an unstable state has been reached. From here, the sanding plate can either be in the concave or the convex state with little effort to be brought.

    Figur 8 zeigt eine Kennlinie der Tellerfeder, die so beschaffen ist, dass die Federkraft mit ständigem Andruck zunimmt und noch vor der Planlage durchschnappt. Wird die Tellerfeder 22 entlastet, tritt die Rückführung in den Ausgangszustand ein. Mit einer solchen Charakteristik können nur konkave und konvex verformte Werkstückflächen bearbeitet werden. Ein Schleifen ebener Flächen ist nur mit erheblichen qualitativen Zugeständnissen möglich.FIG. 8 shows a characteristic curve of the plate spring that is obtained in this way is that the spring force increases with constant pressure and snapped before the flat position. Will the disc spring 22 relieved, the return to the initial state on. With such a characteristic can machined only concave and convex workpiece surfaces become. Sanding flat surfaces is only possible with considerable qualitative concessions possible.

    Claims (7)

    Schleifplatte (14,54) zum Einsatz an Handwerkzeugmaschinen (10), insbesondere Exzenterschleifer und Handschwingschleifer, bestehend aus einer Stützplatte (18), an deren Unterseite sich ein elastisches Schleifkissen (20) abstützt, dadurch gekennzeichnet, dass die Stützplatte (18) als, insbesondere bistabile, Blatt- bzw. Tellerfeder (22, 23, 24) ausgestaltet ist.Sanding plate (14, 54) for use on hand-held power tools (10), in particular random orbital sander and hand-held orbital sander, consisting of a support plate (18), on the underside of which an elastic sanding pad (20) is supported, characterized in that the support plate (18) as, in particular bistable, leaf or plate spring (22, 23, 24) is designed. Schleifplatte nach Anspruch 1, dadurch gekennzeichnet, dass die Tellerfeder (22) ein runder, flacher Ring mit radial nach innen weisenden Zähnen (38) ist.Sanding plate according to claim 1, characterized in that the plate spring (22) is a round, flat ring with teeth (38) pointing radially inwards. Schleifplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Stützplatte (18) und das Schleifblatt (20) durchgehende axiale Löcher zur Staubabsaugung tragen.Sanding plate according to claim 1 or 2, characterized in that the support plate (18) and the sanding sheet (20) carry through axial holes for dust extraction. Schleifplatte nach Anspruch 2, dadurch gekennzeichnet, dass die Zähne (38) der Tellerfeder (22) sich regelmäßig mit Zahnlücken (36) abwechseln und ein radial nach innen weisendes Zahnprofil (34) bilden, wobei die Enden der Zähne (38) radial innen mit einer Nabe (16) drehfest verbunden sind. Grinding plate according to claim 2, characterized in that the teeth (38) of the plate spring (22) alternate regularly with tooth gaps (36) and form a radially inwardly facing tooth profile (34), the ends of the teeth (38) being radially on the inside a hub (16) are rotatably connected. Schleifplatte nach Anspruch 2, dadurch gekennzeichnet, dass die Tellerfeder (22) gemeinsam mit dem Zahnprofil (34) eine pyramidenstumpfartige Form hat, so dass mit der Innenseite konvex gewölbte Flächen bearbeitbar sind.Grinding plate according to claim 2, characterized in that the plate spring (22) together with the tooth profile (34) has a truncated pyramid shape, so that convexly curved surfaces can be machined on the inside. Schleifplatte nach Anspruch 1, dadurch gekennzeichnet, dass die Tellerfeder (22) bistabil ist und ihr äußerer Rand gegenüber einem Teilkreis, der radial innen die Enden der Zähne (38) schneidet, axial nach oben oder nach unten umklappbar ist.Sanding plate according to claim 1, characterized in that the plate spring (22) is bistable and its outer edge can be folded axially upwards or downwards relative to a pitch circle which intersects the ends of the teeth (38) radially on the inside. Schleifplatte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schleifkissen (20) bzw. (60) durch insbesondere beidseitiges Umschäumen der Tellerfeder 23, 24, 25) gebildet wird.Sanding plate according to one of the preceding claims, characterized in that the sanding pad (20) or (60) is formed in particular by foaming the plate spring 23, 24, 25) on both sides.
    EP02017022A 2001-09-08 2002-07-27 Polishing plate Withdrawn EP1291134A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10144274 2001-09-08
    DE2001144274 DE10144274A1 (en) 2001-09-08 2001-09-08 sanding plate

    Publications (1)

    Publication Number Publication Date
    EP1291134A1 true EP1291134A1 (en) 2003-03-12

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02017022A Withdrawn EP1291134A1 (en) 2001-09-08 2002-07-27 Polishing plate

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    EP (1) EP1291134A1 (en)
    CN (1) CN1404963A (en)
    DE (1) DE10144274A1 (en)

    Cited By (4)

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    FR2857610A1 (en) * 2003-07-16 2005-01-21 Essilor Int Tool for planing an optical surface with a rigid support, an elastic interface and a flexible tampon to produce polishing, easing and frosting operations
    FR2900356A1 (en) * 2006-04-27 2007-11-02 Essilor Int TOOL FOR SURFACING AN OPTICAL SURFACE
    US9132527B2 (en) 2010-08-31 2015-09-15 Jöst Gmbh Backing plate unit for a rotary grinding machine
    WO2017025303A1 (en) * 2015-08-11 2017-02-16 Festool Gmbh Grinding disc and grinding machine provided with same

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    EP2006048B1 (en) 2007-06-22 2010-08-04 Metabowerke GmbH Grinding tool
    FR2935627B1 (en) * 2008-09-10 2010-09-03 Essilor Int SURFACE TOOL WITH OPTICAL QUALITY
    CN112872929B (en) * 2021-01-13 2023-06-09 意力(广州)电子科技有限公司 Polishing device and polishing method for cylindrical parts
    CN112873026A (en) * 2021-01-13 2021-06-01 意力(广州)电子科技有限公司 Feeding mechanism and burnishing device

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    US3583111A (en) * 1966-08-22 1971-06-08 David Volk Lens grinding apparatus
    US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc

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    US1665292A (en) * 1925-11-27 1928-04-10 Gen Motors Corp Buffer
    US3583111A (en) * 1966-08-22 1971-06-08 David Volk Lens grinding apparatus
    US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc

    Cited By (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    KR100795456B1 (en) * 2003-07-16 2008-01-16 에실러에떼르나쇼날(꽁빠니제네랄돕띠끄) Optical surface-finishing tool
    WO2005007340A2 (en) * 2003-07-16 2005-01-27 Essilor International (Compagnie Generale D'optique) Optical surface-finishing tool
    WO2005007340A3 (en) * 2003-07-16 2005-03-24 Essilor Int Optical surface-finishing tool
    US7223164B2 (en) 2003-07-16 2007-05-29 Essilor International (Compagnie Generale D'optique) Optical surface-finishing tool
    AU2004256949B2 (en) * 2003-07-16 2008-05-29 Essilor International (Compagnie Generale D'optique) Optical surface-finishing tool
    FR2857610A1 (en) * 2003-07-16 2005-01-21 Essilor Int Tool for planing an optical surface with a rigid support, an elastic interface and a flexible tampon to produce polishing, easing and frosting operations
    FR2900356A1 (en) * 2006-04-27 2007-11-02 Essilor Int TOOL FOR SURFACING AN OPTICAL SURFACE
    WO2007128894A1 (en) * 2006-04-27 2007-11-15 Essilor International (Compagnie Generale D'optique) Optical surface surfacing tool
    AU2007247018B2 (en) * 2006-04-27 2012-03-15 Essilor International Optical surface surfacing tool
    KR100955617B1 (en) * 2006-04-27 2010-05-03 에실러에떼르나쇼날(꽁빠니제네랄돕띠끄) Optical surface surfacing tool
    US7559829B2 (en) 2006-04-27 2009-07-14 Essilor International (Compagnie Generale D'optique) Tool for surfacing an optical surface
    US9132527B2 (en) 2010-08-31 2015-09-15 Jöst Gmbh Backing plate unit for a rotary grinding machine
    EP2611573B1 (en) * 2010-08-31 2017-03-01 Jöst GmbH Grinding wheel unit for a rotary grinding machine
    WO2017025303A1 (en) * 2015-08-11 2017-02-16 Festool Gmbh Grinding disc and grinding machine provided with same

    Also Published As

    Publication number Publication date
    DE10144274A1 (en) 2003-03-27
    CN1404963A (en) 2003-03-26

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