EP1795301B1 - Grinding disc with quick mount-and-release mechanism and disc grinder with such a grinding disc - Google Patents

Grinding disc with quick mount-and-release mechanism and disc grinder with such a grinding disc Download PDF

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Publication number
EP1795301B1
EP1795301B1 EP06023804A EP06023804A EP1795301B1 EP 1795301 B1 EP1795301 B1 EP 1795301B1 EP 06023804 A EP06023804 A EP 06023804A EP 06023804 A EP06023804 A EP 06023804A EP 1795301 B1 EP1795301 B1 EP 1795301B1
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EP
European Patent Office
Prior art keywords
projections
backing pad
bayonet
plug
recess
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EP06023804A
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German (de)
French (fr)
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EP1795301A1 (en
Inventor
Christian Kneip
Torsten Reuss
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Festool GmbH
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Festool GmbH
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Priority to EP09000740A priority Critical patent/EP2052813B1/en
Publication of EP1795301A1 publication Critical patent/EP1795301A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools

Definitions

  • the invention relates to a sanding pad according to the preamble of claim 1 and a disc sander with a holding device for releasably securing a sanding plate.
  • a grinding wheel in the manner of the preamble of claim 1 and a disc sander with a holding device for holding such a grinding wheel go out DE 202 05 495 Ul forth.
  • WO 01/76822 A1 is a grinding machine with a grinding machine tool holder, in which the insert tool is rotated via a resiliently mounted locking element until the locking element, such as a bolt, engages in a bore on the insert tool and fixed in a form-fitting manner.
  • Disc grinders are hand-guided devices and are used for grinding workpieces. Depending on the grinding work to be performed or in the event of wear, a sanding disk change may be required. This removal and attachment of the sanding plate should be possible without tools and without any special difficulties for the user.
  • the object of the invention the assembly and disassembly of a sanding pad of the type mentioned in a holding device of a disc sander, in particular Exzentertellerschleifers, as simple as possible while doing tool-less.
  • the sanding plate should rotate as plan as possible.
  • Bayonet joints generally have a relatively large diameter. Accordingly, in the present case, the diameter can be made large, which favors the flat circulation of the grinding plate.
  • the grinding disc according to the invention has one opposite to that of the workpiece to be ground during use Top outgoing, substantially circular plug-in recess for immersing the holding part.
  • the plug recess containing, consisting of rigid material upper part of the grinding plate can be kept relatively flat, so that an attached to the upper part sanding pad lower part made of elastically deformable plastic material can be made correspondingly thicker.
  • Sanding plates usually have an elastic lower part, on the underside of which the abrasive machining exporting abrasive is attached. In this case, the elastic lower part provides a good nestling of the abrasive to the workpiece, even if it is uneven.
  • a disc grinder 1 In the resulting from the drawing hand grinder is a disc grinder 1 and thereby an eccentric disc grinder having a machine head 2, to which a motor housing 3 connects, in which a drive motor, not shown, is housed.
  • the motor housing 3 is arranged and shaped so that it can serve as a handle. With the other hand you can hold the machine head 2 and hold down against a workpiece to be ground.
  • the machine head 2 contains a driven by the drive motor forth drive unit having a perpendicular to the motor shaft extending and driven via an unillustrated reversing gear from the motor shaft ago drive shaft, which is indicated by its axis line 4.
  • the drive shaft is operatively connected to an eccentric part 5 which is arranged with its axis line 6 eccentric to drive shaft axis line 4 and, depending on the user-set operating mode, revolves around the drive shaft axis line 4 and / or rotates about its eccentric part axis line 6. Further details are of no interest here. In the present context, it could also be a perform only a rotating movement disc grinder.
  • the eccentric 5 is fixedly connected to a coaxially arranged thereon holding device 7, which serves for releasably securing a sanding plate 8.
  • the holding device 7, a holding part 9, which is arranged in the axial extension of the eccentric 5 and fixedly connected thereto by an axially extending fastening screw 10.
  • the sanding pad 8 is detachably attached to the holding device 7 and thereby to its holding part 9 by means of a plug / rotary connection device 11 to be described in detail in the manner of a bayonet connection.
  • the sanding pad 8 has a circular shape. It is made of a sanding pad upper part 12 of rigid material, in particular plastic material, and a bottom attached to the upper part 12 sanding pad base 13 made of elastically deformable material, in particular foam plastic.
  • a sanding blade-like abrasive can be exchangeably secured, with which the grinding of the respective workpiece is performed.
  • the attachment of the abrasive can be done by means of a hook and loop fastener.
  • a Klettenhaftbelag 14 is disposed on the underside of the sanding pad base 13.
  • the abrasive not shown has a cooperating with the Velcro adhesive 14 Klettenhaftbelag.
  • the illustrated sanding pad 8 is traversed by Staubabsaugötechnisch 15, which emanate from the sanding pad bottom and through which the resulting dust during grinding can be sucked off in a manner not shown. This interests in the present case not further.
  • the plug / rotary connection device 11 includes on the holding part 9 circumferentially spaced apart arranged rear engagement projections 16 which project in the radial direction and each extend a distance in the circumferential direction.
  • the Schugreifvorsprüngen 16 is in the axial direction of the sanding pad 8 away an annular surface 17 of the holding device 7 opposite, so that at each Hintergreifvorsprung 16 a limited in the axial direction 6 on the one hand by the respective rear engagement projection 16 and on the other hand by the annular surface 17
  • Clausringnut 18 annular surface
  • bayonet projections 19 are arranged in the number of Stromgreifvorsprüngen 16, which are arranged distributed in the circumferential direction at a distance from each other, extending in the circumferential direction and protrude inward in the radial direction.
  • the measured in the circumferential direction length of the bayonet projections 19 is smaller than the distance between the Schugreifvorsprüngen 16 of the holding part 9, so that the bayonet projections 19 are movable in a mounting rotational position of the grinding disc 8 between the Häifvorsprüngen 16 and in a mounting rotational position in the Generalringnuten 18th the holding device 7 are arranged and engage behind the Deutschengreifvorsprünge 16.
  • the sanding pad 8 is placed on the holding part 9 when it is mounted in the mounting rotational position in which theSchgreifvorsprünge 16 and the bayonet projections 19 are arranged so to speak on a gap to each other.
  • the bayonet projections 19 pass through the spaces between the Hintergreifvorsprüngen 16 and the Schugreifvorsprünge 16 through the spaces between the bayonet projections 19.
  • the bayonet projections 19 reach behind the Häifvorsprünge 16 so that a firm locking takes place. To remove the sanding pad 8 this is first rotated and then withdrawn in the axial direction.
  • Said annular surface 17, which limits the Operaringnuten 18 above, is arranged to be movable in the axial direction and to the rear engagement projections 16 spring-loaded.
  • the arrangement is such that the annular surface 17 is held at a removed grinding plate 8 by the spring force against a stop that the Operaringnuten 18 in the axial direction less wide than the bayonet projections 19 are thick.
  • Both the Hintergreifvorsprünge 16 and the bayonet projections 19 are arranged in a respective same, perpendicular to the axial direction plane of the holding part 9 and the sanding pad 8.
  • the bayonet projections are automatically clamped during rotation of the sanding pad 8 in its mounting rotational position, so that the sanding pad 8 holds securely on the holding part 9.
  • the annular surface 17 is formed by a relative to the holding part 9 axially movably mounted pressure ring 20.
  • the pressure ring 20 is placed on a cylindrical portion 21 of the holding part 9, which is arranged in the axial direction next to the Deutschengreifvorsprünge 16 supporting holding part section 22.
  • the spring force is applied by a plate spring 23, which has a conical shape and the pressure ring 20 back extended.
  • the plate spring 23 is supported radially inwardly against an annular shoulder 24 of the holding device 7 and radially outwardly against the pressure ring 20. It can be seen that when screwing the bayonet projections 19 into the partial ring grooves 18 when the pressure ring 20 is moved in the direction away from the rear engagement projections 16, the cone angle of the plate spring 23 is increased.
  • the Hintergreifvorsprünge 16 have, as from FIG. 4 it can be seen on its the respective partial annular groove 18 bounding inside a screwing the bayonet projections facilitating inclined surface 25, so that, so to speak, a funnel-like mouth for the engagement of the respective bayonet projection 19 results.
  • the adjoining the inclined surface 25 portion 26 of the inner side of the Schugreifvorsprünge runs flat, while in a direction transverse to the axial direction of the plane.
  • a total of three bayonet projections 19 are arranged on the sanding pad 8. Accordingly, the holding part 9 has three Deutschengreifvorsprünge 16.
  • substantially circular plug recess 27 is formed, with the sanding plate 8 is attached to the holding part 9 so that it dips into the plug recess 27.
  • the plug-in recess 27 is formed in the sanding pad upper part 12.
  • the plug-in recess 27 terminates within the grinding plate 8 on a bottom surface 28 formed by the sanding pad upper part 12.
  • the sanding pad 8 is in its fastened state all around against the holding device 7 and thereby against the pressure ring 20 formed annular surface 17 supported.
  • the sanding pad 8 on its upper side an annular around the plug recess 27 around circumferential flat surface 29, whose plane is transverse to the axial direction.
  • the bayonet projections 19 protrude radially inwards from the inner circumference of the plug-in recess 27 and are arranged in the axial direction so that the upper side 30 of the bayonet projections 19 is formed by regions of the planar surface 29 which are drawn inwards.
  • the bayonet projections 19 are flush with their upper surface 30 in the plane surface 29.
  • the bayonet projections 19 are located at the furthest possible location of the plug recess 27, so this must accordingly not extend far into the sanding pad. This allows a relatively thin construction of the sanding pad upper part 12, so that the sanding pad lower part also below the plug recess 27 of the upper part 12 has a sufficient thickness for a good nestling against the workpiece.
  • the plug recess 27 must be so deep that the Hintergreifvorsprünge 16 of the holding part 9 can get behind the bayonet projections 19.
  • a circumferentially extending gap 31 for receiving the respective Häifvorsprungs 16 is formed on the circumference of the plug recess 27 in the axial direction between each bayonet projection 19 and the bottom surface 28.
  • Each of these gaps 31 terminates in the circumferential direction at one of its ends on a rotation stop 32.
  • the sanding plate 8 mounted on the holding part 9 is rotated such that the rear grip projections 16 pass through the open ends of the gaps 31 behind the bayonet projections 19.
  • the Rotary stops 32 limit this rotation of the grinding plate 8, so that too much twisting is avoided. In principle, it would be sufficient if only such a rotation stop 32 was present in one of the gaps 31.
  • the rotational stops 32 like the bayonet projections 19, integrally formed on the sanding pad upper part 12. They form a conclusion of column 31.
  • the bayonet projections 19 have over their circumferentially extending length in the axial direction constant thickness.
  • the centering of the sanding plate 8 on the holding part 9 takes place by the centering of the bayonet projections 19 on the circumference of the holding part 9.
  • the bottom of the bayonet projections 19 receiving Operaringnuten 18 is formed by the grinding disc 8 centering peripheral surface of the holding part 9.

Description

Die Erfindung betrifft einen Schleifteller gemäß Oberbegriff des Anspruchs 1 sowie ein Tellerschleifer mit einer Haltevorrichtung zum lösbaren Befestigen eines Schleiftellers.The invention relates to a sanding pad according to the preamble of claim 1 and a disc sander with a holding device for releasably securing a sanding plate.

Eine Schleifscheibe in der Art des Oberbegriffs des Anspruchs 1 sowie ein Tellerschleifer mit einer Haltevorrichtung zum Halten einer solchen Schleifscheibe gehen aus DE 202 05 495 Ul hervor.A grinding wheel in the manner of the preamble of claim 1 and a disc sander with a holding device for holding such a grinding wheel go out DE 202 05 495 Ul forth.

Aus der WO 01/76822 A1 geht eine Schleifmaschine mit einer Schleifmaschinenwerkzeugaufnahme hervor, bei der das Einsatzwerkzeug über ein federnd gelagertes Rastelement gedreht wird, bis das Rastelement, beispielsweise ein Bolzen, in eine Bohrung am Einsatzwerkzeug eingreift und formschlüssig fixiert.From the WO 01/76822 A1 is a grinding machine with a grinding machine tool holder, in which the insert tool is rotated via a resiliently mounted locking element until the locking element, such as a bolt, engages in a bore on the insert tool and fixed in a form-fitting manner.

Tellerschleifer sind von Hand geführte Geräte und dienen zur schleifenden Bearbeitung von Werkstücken. Dabei kann je nach der vorzunehmenden Schleifarbeit oder im Verschleißfall ein Schleiftellerwechsel erforderlich werden. Dieses Entfernen und Anbringen des Schleiftellers sollte möglichst werkzeuglos und ohne besondere Schwierigkeiten für den Benutzer erfolgen.Disc grinders are hand-guided devices and are used for grinding workpieces. Depending on the grinding work to be performed or in the event of wear, a sanding disk change may be required. This removal and attachment of the sanding plate should be possible without tools and without any special difficulties for the user.

Ferner besteht bei Schleiftellern allgemein die Gefahr, dass sie keine exakt plan verlaufende Schleifbewegung ausführen sondern mit einem sogenannten Planschlag umlaufen, was das Arbeitsergebnis beeinträchtigen kann.Furthermore, in the case of sanding discs there is generally the risk that they do not execute a precisely planar grinding movement but circulate with a so-called flat rate, which can affect the work result.

Ausgehend hiervon liegt der Erfindung die Aufgabe zu Grunde, die Montage und Demontage eines Schleiftellers der eingangs genannten Art an einer Haltevorrichtung eines Tellerschleifers, insbesondere Exzentertellerschleifers, möglichst einfach und dabei werkzeuglos zu gestalten. Außerdem soll der Schleifteller möglichst plan umlaufen.Proceeding from this, the object of the invention, the assembly and disassembly of a sanding pad of the type mentioned in a holding device of a disc sander, in particular Exzentertellerschleifers, as simple as possible while doing tool-less. In addition, the sanding plate should rotate as plan as possible.

Diese Aufgabe wird durch einen Schleifteller gemäß der technischen Lehre des Anspruchs 1 gelöst.This object is achieved by a sanding pad according to the technical teaching of claim 1.

Beim Befestigen des Schleiftellers muss dieser lediglich in axialer Richtung an die Haltevorrichtung angesteckt und dann verdreht werden, sodass die Bajonettverbindung wirksam und der Schleifteller damit sicher gehalten wird. Das Wegnehmen des Schleiftellers erfolgt in umgekehrter Richtung. Es ergibt sich eine sehr einfache Handhabung. Irgendwelche Werkzeuge werden nicht benötigt.When attaching the sanding pad this must only be plugged in the axial direction of the fixture and then rotated, so that the bayonet connection is effective and the sanding pad is held securely. The removal of the sanding plate takes place in the opposite direction. This results in a very easy handling. Any tools are not needed.

Bajonettverbindungen weisen allgemein einen verhältnisnmäßig großen Durchmesser auf. Dementsprechend kann auch vorliegend der Durchmesser groß bemessen werden, was den planen Umlauf des Schleiftellers begünstigt.Bayonet joints generally have a relatively large diameter. Accordingly, in the present case, the diameter can be made large, which favors the flat circulation of the grinding plate.

Ein weiterer Vorteil besteht darein, dass eine Bajonettverbindung in axialer Richtung kurz baut. In Zusammenhang hiermit weist der erfindungagemäße Schleifteller eine von seiner beim Gebrauch dem zu schleifenden Werkstück entgegengesetzten Oberseite ausgehende, im Wesentlichen kreisförmige Steckausnehmung zum Eintauchen des Halteteils auf.Another advantage is that a bayonet connection is short in the axial direction. In this connection, the grinding disc according to the invention has one opposite to that of the workpiece to be ground during use Top outgoing, substantially circular plug-in recess for immersing the holding part.

Auf diese Weise findet die Bajonettverriegelung sozusagen im Inneren des Schleiftellers statt. Auf Grund der geringen axialen Länge der Steckausnehmung kann ein die Steckausnehmung enthaltendes, aus starrem Material bestehendes Oberteil des Schleiftellers verhältnismäßig flach gehalten werden, sodass ein an das Oberteil angesetztes Schleifteller-Unterteil aus elastisch verformbarem Kunststoffmaterial entsprechend dicker gemacht werden kann. Schleifteller weisen üblicherweise ein elastisches Unterteil auf, an dessen Unterseite das die Schleifbearbeitung ausführende Schleifmittel angebracht wird. Dabei erhält man durch das elastische Unterteil ein gutes Anschmiegen des Schleifmittels an das Werkstück, auch wenn dieses uneben ist.In this way, the bayonet locking takes place so to speak inside the sanding pad. Due to the small axial length of the plug recess, the plug recess containing, consisting of rigid material upper part of the grinding plate can be kept relatively flat, so that an attached to the upper part sanding pad lower part made of elastically deformable plastic material can be made correspondingly thicker. Sanding plates usually have an elastic lower part, on the underside of which the abrasive machining exporting abrasive is attached. In this case, the elastic lower part provides a good nestling of the abrasive to the workpiece, even if it is uneven.

Zweckmäßige Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen angegeben.Advantageous embodiments of the invention are specified in the further claims.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung im Einzelnen erläutert. Es zeigen:

Figur 1
einen Tellerschleifer mit zugehörigem Schleifteller, wobei der Schleifteller und die ihn haltende Halteeinrichtung des Tellerschleifers im Schnitt gezeigt und vom Tellerschleifer ansonsten nur der Umriss strichpunktiert angedeutet ist,
Figur 2
die in Figur 1 enthaltene Schnittdarstellung des Schleiftellers und der Halteeinrichtung in vergrößertem Zustand,
Figur 3
den Schleifteller allein im den Figuren 1 und 2 entsprechenden Schnitt,
Figur 4
den Schleifteller und die Halteeinrichtung im voneinander getrennten Zustand in Schrägansicht und
Figur 5
den Schleifteller in Draufsicht gemäß Pfeil V in Figur 3.
An embodiment of the invention will be explained in detail below with reference to the drawings. Show it:
FIG. 1
a disc sander with associated sanding pad, wherein the sanding pad and the holding device of the disc sander holding it is shown in section and otherwise only the outline is indicated in broken lines by the disc sander,
FIG. 2
in the FIG. 1 included sectional view of the grinding plate and the holding device in an enlarged state,
FIG. 3
the sanding pad alone in the FIGS. 1 and 2 appropriate cut,
FIG. 4
the sanding pad and the holding device in the separated state in an oblique view and
FIG. 5
the sanding pad in plan view according to arrow V in FIG. 3 ,

Bei der aus der Zeichnung hervorgehenden Handschleifmaschine handelt es sich um einen Tellerschleifer 1 und dabei um einen Exzentertellerschleifer, der einen Maschinenkopf 2 aufweist, an den sich ein Motorgehäuse 3 anschließt, in dem ein nicht dargestellter Antriebsmotor untergebracht ist. Dabei ist das Motorgehäuse 3 so angeordnet und geformt, dass es als Handgriff dienen kann. Mit der anderen Hand kann man den Maschinenkopf 2 halten und nach unten gegen ein zu schleifendes Werkstück halten.In the resulting from the drawing hand grinder is a disc grinder 1 and thereby an eccentric disc grinder having a machine head 2, to which a motor housing 3 connects, in which a drive motor, not shown, is housed. In this case, the motor housing 3 is arranged and shaped so that it can serve as a handle. With the other hand you can hold the machine head 2 and hold down against a workpiece to be ground.

Der Maschinenkopf 2 enthält eine vom Antriebsmotor her antreibbare Antriebseinheit, die eine rechtwinkelig zur Motorwelle verlaufende und über ein nicht dargestelltes Umlenkgetriebe von der Motorwelle her angetriebene Antriebswelle aufweist, die durch ihre Achslinie 4 angedeutet ist. Die Antriebswelle steht in Wirkverbindung mit einem Exzenterteil 5, das mit seiner Achslinie 6 exzentrisch zu Antriebswellen-Achslinie 4 angeordnet ist und je nach der vom Benutzer eingestellten Betriebsart um die Antriebswellen-Achslinie 4 kreist und/oder um seine Exzenterteil-Achslinie 6 rotiert. Weitere Einzelheiten hierzu interessieren vorliegend nicht weiter. Im vorliegenden Zusammenhang könnte es sich auch um einen nur eine rotierende Bewegung ausführenden Tellerschleifer handeln.The machine head 2 contains a driven by the drive motor forth drive unit having a perpendicular to the motor shaft extending and driven via an unillustrated reversing gear from the motor shaft ago drive shaft, which is indicated by its axis line 4. The drive shaft is operatively connected to an eccentric part 5 which is arranged with its axis line 6 eccentric to drive shaft axis line 4 and, depending on the user-set operating mode, revolves around the drive shaft axis line 4 and / or rotates about its eccentric part axis line 6. Further details are of no interest here. In the present context, it could also be a perform only a rotating movement disc grinder.

Das Exzenterteil 5 ist fest mit einer koaxial zu ihm angeordneten Haltevorrichtung 7 verbunden, die zum lösbaren Befestigen eines Schleiftellers 8 dient. Dabei weist die Haltevorrichtung 7 ein Halteteil 9 auf, das in axialer Verlängerung des Exzenterteils 5 angeordnet und mit diesem durch eine axial verlaufende Befestigungsschraube 10 fest verbunden ist.The eccentric 5 is fixedly connected to a coaxially arranged thereon holding device 7, which serves for releasably securing a sanding plate 8. In this case, the holding device 7, a holding part 9, which is arranged in the axial extension of the eccentric 5 and fixedly connected thereto by an axially extending fastening screw 10.

Der Schleifteller 8 wird mittels einer im Einzelnen noch zu beschreibenden Steck-/Drehverbindungseinrichtung 11 nach Art einer Bajonettverbindung lösbar an der Haltevorrichtung 7 und dabei an dessen Halteteil 9 befestigt.The sanding pad 8 is detachably attached to the holding device 7 and thereby to its holding part 9 by means of a plug / rotary connection device 11 to be described in detail in the manner of a bayonet connection.

Der Schleifteller 8 weist eine kreisrunde Gestalt auf. Er wird von einem Schleifteller-Oberteil 12 aus starrem Material, insbesondere Kunststoffmaterial, und einem unten an das Oberteil 12 angesetzten Schleifteller-Unterteil 13 aus elastisch verformbarem Material, insbesondere Schaumkunststoff, gebildet. An der Unterseite des Schleifteller-Unterteils 13 kann ein schleifblattartiges Schleifmittel auswechselbar befestigt werden, mit dem die Schleifbearbeitung des jeweiligen Werkstücks ausgeführt wird. Die Befestigung des Schleifmittels kann mittels eines Klettverschlusses erfolgen. Hierzu ist an der Unterseite des Schleifteller-Unterteils 13 ein Klettenhaftbelag 14 angeordnet. Das nicht dargestellte Schleifmittel weist einen mit dem Klettenhaftbelag 14 zusammenwirkenden Klettenhaftbelag auf.The sanding pad 8 has a circular shape. It is made of a sanding pad upper part 12 of rigid material, in particular plastic material, and a bottom attached to the upper part 12 sanding pad base 13 made of elastically deformable material, in particular foam plastic. On the underside of the sanding pad lower part 13, a sanding blade-like abrasive can be exchangeably secured, with which the grinding of the respective workpiece is performed. The attachment of the abrasive can be done by means of a hook and loop fastener. For this purpose, a Klettenhaftbelag 14 is disposed on the underside of the sanding pad base 13. The abrasive not shown has a cooperating with the Velcro adhesive 14 Klettenhaftbelag.

Der dargestellte Schleifteller 8 wird von Staubabsaugöffnungen 15 durchzogen, die von der Schleifteller-Unterseite ausgehen und durch die der beim Schleifen entstehende Staub in nicht dargestellter Weise abgesaugt werden kann. Dies interessiert vorliegend nicht weiter.The illustrated sanding pad 8 is traversed by Staubabsaugöffnungen 15, which emanate from the sanding pad bottom and through which the resulting dust during grinding can be sucked off in a manner not shown. This interests in the present case not further.

Die Steck-/Drehverbindungseinrichtung 11 enthält am Halteteil 9 in Umfangsrichtung mit Abstand zueinander verteilt angeordnete Hintergreifvorsprünge 16, die in radialer Richtung vorstehen und sich jeweils ein Stück weit in Umfangsrichtung erstrecken. Den Hintergreifvorsprüngen 16 liegt in axialer Richtung vom Schleifteller 8 weg eine Ringfläche 17 der Haltevorrichtung 7 gegenüber, sodass bei jedem Hintergreifvorsprung 16 eine in axialer Richtung 6 einerseits von dem betreffenden Hintergreifvorsprung 16 und andererseits von der Ringfläche 17 begrenzte Teilringnut 18 gebildet wird.The plug / rotary connection device 11 includes on the holding part 9 circumferentially spaced apart arranged rear engagement projections 16 which project in the radial direction and each extend a distance in the circumferential direction. The Hintergreifvorsprüngen 16 is in the axial direction of the sanding pad 8 away an annular surface 17 of the holding device 7 opposite, so that at each Hintergreifvorsprung 16 a limited in the axial direction 6 on the one hand by the respective rear engagement projection 16 and on the other hand by the annular surface 17 Teilringnut 18 is formed.

Am Schleifteller 8 sind in der Anzahl den Hintergreifvorsprüngen 16 entsprechende Bajonettvorsprünge 19 angeordnet, die in Umfangsrichtung mit Abstand zueinander verteilt angeordnet sind, sich in Umfangsrichtung erstrecken und in radialer Richtung nach innen vorstehen. Die in Umfangsrichtung gemessene Länge der Bajonettvorsprünge 19 ist kleiner als der Abstand zwischen den Hintergreifvorsprüngen 16 des Halteteils 9, sodass die Bajonettvorsprünge 19 in einer Montage-Drehlage des Schleiftellers 8 zwischen den Hintergreifvorsprüngen 16 hindurch bewegbar sind und in einer Befestigungs-Drehlage in den Teilringnuten 18 der Haltevorrichtung 7 angeordnet sind und die Hintergreifvorsprünge 16 hintergreifen.On the sanding pad 8 corresponding bayonet projections 19 are arranged in the number of Hintergreifvorsprüngen 16, which are arranged distributed in the circumferential direction at a distance from each other, extending in the circumferential direction and protrude inward in the radial direction. The measured in the circumferential direction length of the bayonet projections 19 is smaller than the distance between the Hintergreifvorsprüngen 16 of the holding part 9, so that the bayonet projections 19 are movable in a mounting rotational position of the grinding disc 8 between the Hintergreifvorsprüngen 16 and in a mounting rotational position in the Teilringnuten 18th the holding device 7 are arranged and engage behind the Hintergreifvorsprünge 16.

Somit wird der Schleifteller 8 bei seinem Befestigen in der Montage-Drehlage, in der die Hintergreifvorsprünge 16 und die Bajonettvorsprünge 19 sozusagen auf Lücke zueinander angeordnet sind, auf das Halteteil 9 gesteckt. Dabei gelangen die Bajonettvorsprünge 19 durch die Zwischenräume zwischen den Hintergreifvorsprüngen 16 und die Hintergreifvorsprünge 16 durch die Zwischenräume zwischen den Bajonettvorsprüngen 19. Beim anschließenden Verdrehen des Schleiftellers 8 in seine Befestigungs-Drehlage gelangen die Bajonettvorsprünge 19 hinter die Hintergreifvorsprünge 16, sodass eine feste Verriegelung stattfindet. Zum Wegnehmen des Schleiftellers 8 wird dieser zunächst gedreht und dann in axialer Richtung abgezogen.Thus, the sanding pad 8 is placed on the holding part 9 when it is mounted in the mounting rotational position in which the Hintergreifvorsprünge 16 and the bayonet projections 19 are arranged so to speak on a gap to each other. The bayonet projections 19 pass through the spaces between the Hintergreifvorsprüngen 16 and the Hintergreifvorsprünge 16 through the spaces between the bayonet projections 19. During subsequent rotation of the grinding plate 8 in its mounting rotational position, the bayonet projections 19 reach behind the Hintergreifvorsprünge 16 so that a firm locking takes place. To remove the sanding pad 8 this is first rotated and then withdrawn in the axial direction.

Die genannte Ringfläche 17, die die Teilringnuten 18 oben begrenzt, ist in axialer Richtung bewegbar angeordnet und zu den Hintergreifvorsprüngen 16 hin federbelastet. Dabei ist die Anordnung so getroffen, dass die Ringfläche 17 bei entferntem Schleifteller 8 durch die Federkraft so gegen einen Anschlag gehalten wird, dass die Teilringnuten 18 in axialer Richtung weniger breit als die Bajonettvorsprünge 19 dick sind.Said annular surface 17, which limits the Teilringnuten 18 above, is arranged to be movable in the axial direction and to the rear engagement projections 16 spring-loaded. In this case, the arrangement is such that the annular surface 17 is held at a removed grinding plate 8 by the spring force against a stop that the Teilringnuten 18 in the axial direction less wide than the bayonet projections 19 are thick.

Beim Befestigen des Schleiftellers 8, wenn dieser axial aufgesteckt und dann verdreht wird, wird die Ringfläche 17 durch die Bajonettvorsprünge 19 entgegen der Federkraft in axialer Richtung verdrängt, sodass die Bajonettvorsprünge 19 anschließend durch die Federkraft klemmend in den Teilringnuten 18 gehalten werden.When attaching the sanding plate 8, when this is axially plugged and then rotated, the annular surface 17 is displaced by the bayonet projections 19 against the spring force in the axial direction, so that the bayonet projections 19 are then held by the spring force clamping in the Teilringnuten 18.

Sowohl die Hintergreifvorsprünge 16 als auch die Bajonettvorsprünge 19 sind in einer jeweils gleichen, rechtwinkelig zur axialen Richtung stehenden Ebene des Halteteils 9 bzw. des Schleiftellers 8 angeordnet.Both the Hintergreifvorsprünge 16 and the bayonet projections 19 are arranged in a respective same, perpendicular to the axial direction plane of the holding part 9 and the sanding pad 8.

Auf die genannte Weise werden die Bajonettvorsprünge beim Verdrehen des Schleiftellers 8 in seine Befestigungs-Drehlage selbsttätig verklemmt, sodass der Schleifteller 8 sicher am Halteteil 9 hält.In the manner mentioned, the bayonet projections are automatically clamped during rotation of the sanding pad 8 in its mounting rotational position, so that the sanding pad 8 holds securely on the holding part 9.

Die Ringfläche 17 wird von einem relativ zum Halteteil 9 axial beweglich gelagerten Druckring 20 gebildet. Dabei ist der Druckring 20 auf eine zylindrische Partie 21 des Halteteils 9 gesteckt, die in axialer Richtung neben der die Hintergreifvorsprünge 16 tragenden Halteteilpartie 22 angeordnet ist.The annular surface 17 is formed by a relative to the holding part 9 axially movably mounted pressure ring 20. In this case, the pressure ring 20 is placed on a cylindrical portion 21 of the holding part 9, which is arranged in the axial direction next to the Hintergreifvorsprünge 16 supporting holding part section 22.

Die Federkraft wird von einer Tellerfeder 23 aufgebracht, die eine konische Gestalt aufweist und sich zum Druckring 20 hin erweitert. Die Tellerfeder 23 ist radial innen gegen einen Ringabsatz 24 der Haltevorrichtung 7 und radial außen gegen den Druckring 20 abgestützt. Es ist ersichtlich, dass sich beim Eindrehen der Bajonettvorsprünge 19 in die Teilringnuten 18, wenn der Druckring 20 in Richtung von den Hintergreifvorsprüngen 16 weg bewegt wird, der Konuswinkel der Tellerfeder 23 vergrößert.The spring force is applied by a plate spring 23, which has a conical shape and the pressure ring 20 back extended. The plate spring 23 is supported radially inwardly against an annular shoulder 24 of the holding device 7 and radially outwardly against the pressure ring 20. It can be seen that when screwing the bayonet projections 19 into the partial ring grooves 18 when the pressure ring 20 is moved in the direction away from the rear engagement projections 16, the cone angle of the plate spring 23 is increased.

Die Hintergreifvorsprünge 16 weisen, wie aus Figur 4 ersichtlich ist, an ihrer die jeweilige Teilringnut 18 begrenzenden Innenseite eine das Eindrehen der Bajonettvorsprünge erleichternde Schrägfläche 25 auf, sodass sich sozusagen eine trichterähnliche Mündung für das Eingreifen des jeweiligen Bajonettvorsprungs 19 ergibt. Der an die Schrägfläche 25 anschließende Bereich 26 der Innenseite der Hintergreifvorsprünge verläuft eben und dabei in einer quer zur axialen Richtung stehenden Ebene. Wie aus der Zeichnung ferner ersichtlich ist, sind insgesamt drei Bajonettvorsprünge 19 am Schleifteller 8 angeordnet. Dementsprechend weist auch das Halteteil 9 drei Hintergreifvorsprünge 16 auf.The Hintergreifvorsprünge 16 have, as from FIG. 4 it can be seen on its the respective partial annular groove 18 bounding inside a screwing the bayonet projections facilitating inclined surface 25, so that, so to speak, a funnel-like mouth for the engagement of the respective bayonet projection 19 results. The adjoining the inclined surface 25 portion 26 of the inner side of the Hintergreifvorsprünge runs flat, while in a direction transverse to the axial direction of the plane. As can also be seen from the drawing, a total of three bayonet projections 19 are arranged on the sanding pad 8. Accordingly, the holding part 9 has three Hintergreifvorsprünge 16.

Am Schleifteller 8 ist eine von seiner beim Gebrauch dem zu schleifenden Werkstück entgegengesetzten Oberseite 26 ausgehende, im Wesentlichen kreisförmige Steckausnehmung 27 ausgebildet, mit der der Schleifteller 8 auf das Halteteil 9 aufgesteckt wird, sodass dieses in die Steckausnehmung 27 eintaucht. Die Steckausnehmung 27 ist in das Schleifteller-Oberteil 12 eingeformt. Die Steckausnehmung 27 endet innerhalb des Schleiftellers 8 an einer vom Schleifteller-Oberteil 12 gebildeten Bodenfläche 28.On the sanding pad 8 one of his in use the workpiece to be ground opposite top 26 outgoing, substantially circular plug recess 27 is formed, with the sanding plate 8 is attached to the holding part 9 so that it dips into the plug recess 27. The plug-in recess 27 is formed in the sanding pad upper part 12. The plug-in recess 27 terminates within the grinding plate 8 on a bottom surface 28 formed by the sanding pad upper part 12.

Der Schleifteller 8 ist in seinem befestigten Zustand rundum gegen die Haltevorrichtung 7 und dabei gegen die vom Druckring 20 gebildete Ringfläche 17 abgestützt. Hierzu weist der Schleifteller 8 an seiner Oberseite eine ringförmig um die Steckausnehmung 27 herum umlaufende Planfläche 29 auf, deren Ebene quer zur axialen Richtung steht. Die Bajonettvorsprünge 19 stehen vom Innenumfang der Steckausnehmung 27 nach radial innen vor und sind in axialer Richtung so angeordnet, dass die Oberseite 30 der Bajonettvorsprünge 19 von nach innen vorgezogenen Bereichen der Planfläche 29 gebildet wird. Die Bajonettvorsprünge 19 liegen also mit ihrer Oberseite 30 flächenbündig in der Planfläche 29. Dies ergibt eine möglichst großflächige Abstützung des Schleiftellers 8 über die Planfläche 29 am Druckring 20. Ferner befinden sich die Bajonettvorsprünge 19 an der am weitesten oben möglichen Stelle der Steckausnehmung 27, sodass sich diese entsprechend wenig weit in den Schleifteller hinein erstrecken muss. Dies ermöglicht eine verhältnismäßig dünne Bauweise des Schleifteller-Oberteils 12, sodass das Schleifteller-Unterteil auch unterhalb der Steckausnehmung 27 des Oberteils 12 eine ausreichende Dicke für ein gutes Anschmiegen an das Werkstück aufweist.The sanding pad 8 is in its fastened state all around against the holding device 7 and thereby against the pressure ring 20 formed annular surface 17 supported. For this purpose, the sanding pad 8 on its upper side an annular around the plug recess 27 around circumferential flat surface 29, whose plane is transverse to the axial direction. The bayonet projections 19 protrude radially inwards from the inner circumference of the plug-in recess 27 and are arranged in the axial direction so that the upper side 30 of the bayonet projections 19 is formed by regions of the planar surface 29 which are drawn inwards. Thus, the bayonet projections 19 are flush with their upper surface 30 in the plane surface 29. This results in the largest possible support of the sanding plate 8 on the flat surface 29 on the pressure ring 20. Furthermore, the bayonet projections 19 are located at the furthest possible location of the plug recess 27, so this must accordingly not extend far into the sanding pad. This allows a relatively thin construction of the sanding pad upper part 12, so that the sanding pad lower part also below the plug recess 27 of the upper part 12 has a sufficient thickness for a good nestling against the workpiece.

Die Steckausnehmung 27 muss so tief sein, dass die Hintergreifvorsprünge 16 des Halteteils 9 hinter die Bajonettvorsprünge 19 gelangen können. In diesem Zusammenhang ist vorgesehen, dass am Umfang der Steckausnehmung 27 in axialer Richtung zwischen jedem Bajonettvorsprung 19 und der Bodenfläche 28 ein in Umfangsrichtung verlaufender Spalt 31 zur Aufnahme des jeweiligen Hintergreifvorsprungs 16 gebildet wird.The plug recess 27 must be so deep that the Hintergreifvorsprünge 16 of the holding part 9 can get behind the bayonet projections 19. In this context, it is provided that a circumferentially extending gap 31 for receiving the respective Hintergreifvorsprungs 16 is formed on the circumference of the plug recess 27 in the axial direction between each bayonet projection 19 and the bottom surface 28.

Jeder dieser Spalte 31 endet in Umfangsrichtung an einem seiner Enden an einem Drehanschlag 32. Bei der Montage wird der auf das Halteteil 9 aufgesteckte Schleifteller 8 so verdreht, dass die Hintergreifvorsprünge 16 durch die offenen Enden der Spalte 31 hinter die Bajonettvorsprünge 19 gelangen. Die Drehanschläge 32 begrenzen dieses Verdrehen des Schleiftellers 8, sodass ein zu weites Verdrehen vermieden wird. Prinzipiell würde es genügen, wenn nur bei einem der Spalte 31 ein solcher Drehanschlag 32 vorhanden wäre. Die Drehanschläge 32 sind, wie die Bajonettvorsprünge 19, einstückig an das Schleifteller-Oberteil 12 angeformt. Sie bilden einen Abschluss der Spalte 31.Each of these gaps 31 terminates in the circumferential direction at one of its ends on a rotation stop 32. During assembly, the sanding plate 8 mounted on the holding part 9 is rotated such that the rear grip projections 16 pass through the open ends of the gaps 31 behind the bayonet projections 19. The Rotary stops 32 limit this rotation of the grinding plate 8, so that too much twisting is avoided. In principle, it would be sufficient if only such a rotation stop 32 was present in one of the gaps 31. The rotational stops 32, like the bayonet projections 19, integrally formed on the sanding pad upper part 12. They form a conclusion of column 31.

Die Bajonettvorsprünge 19 weisen eine über ihre in Umfangsrichtung verlaufende Länge hinweg in axialer Richtung gleichbleibende Dicke auf.The bayonet projections 19 have over their circumferentially extending length in the axial direction constant thickness.

Die Zentrierung des Schleiftellers 8 am Halteteil 9 erfolgt durch die Zentrierung der Bajonettvorsprünge 19 auf dem Umfang des Halteteils 9. Der Boden der die Bajonettvorsprünge 19 aufnehmenden Teilringnuten 18 wird von der den Schleifteller 8 zentrierenden Umfangsfläche des Halteteils 9 gebildet.The centering of the sanding plate 8 on the holding part 9 takes place by the centering of the bayonet projections 19 on the circumference of the holding part 9. The bottom of the bayonet projections 19 receiving Teilringnuten 18 is formed by the grinding disc 8 centering peripheral surface of the holding part 9.

Claims (11)

  1. Backing pad for a router, in particular an orbital sander, comprising a retaining device (7) for the releasable attachment of the backing pad (8), which performs a power-driven rotary and/or orbital movement in operation, wherein the backing pad (8) is provided with a substantially circular plug-in recess (27) starting from its top side, which in use is opposite the workpiece to be machined, and used for a retaining part (9) of the router to dip in, and wherein projections project radially inwards from the inner circumference of the plug-in recess (27), which in an assembly rotary position of the backing pad (8) are movable between engagement projections (16) of the retaining part (9) and the undersides of which, which are located opposite their top sides in the axial direction, are engaged from behind by a respective engagement projection (16) in a mounting rotary position of the backing pad (8), wherein at least one projection (19) is provided at the end assigned to the mounting rotary position in the circumferential direction with a rotary stop (32) for the respective engagement projection (16) of the retaining part (9) in order to limit the twisting of the backing pad (8), wherein the backing pad (8) has on its top side (26) a plane surface (29) surrounding the plug-in recess (27), on which rests in the mounting rotary position an annular surface (17) of the retaining part (9) spring-loaded towards the engagement projections (16), and wherein a thickness of the projections (19) defined by a distance between the top sides (30) and the undersides is greater than a width of partial annular grooves (18) present between the engagement projections (16) and the annular surface (17) of the retaining part (9) when the backing pad (8) is removed, characterised in that the undersides of the projections (19) run out freely towards ends of the projections (19) assigned to the assembly rotary position in the circumferential direction, and in that the backing pad (8) can be secured to the retaining device (7) by means of a plug-in/rotary connecting device (11) designed in the manner of a bayonet joint, wherein the projections representing the bayonet projections (19) are clamped automatically between the annular surface (17) and the engagement projections (16) as the backing pad (8) is turned into the mounting rotary position.
  2. Backing pad according to claim 1, characterised in that the thickness of the bayonet projections (19) remains constant along their length.
  3. Backing pad according to claim 1 or 2, characterised in that three bayonet projections (19) are provided.
  4. Backing pad according to any of the preceding claims, characterised in that the top sides (30) of the bayonet projections (19) are represented by regions of the plane surface (29) which are drawn inwards.
  5. Backing pad according to any of the preceding claims, characterised in that the plug-in recess (27) is so deep that the engagement projections (16) of the retaining part (9) can reach behind the bayonet projections (19).
  6. Backing pad according to any of the preceding claims, characterised in that a circumferential gap (31) for the accommodation of the respective engagement projection (16) of the retaining part (9) is formed in the axial direction between the bayonet projection (19) and the base surface (28) of the plug-in recess (27) which bounds the plug-in recess (27) towards the bottom.
  7. Backing pad according to any of the preceding claims, characterised in that it comprises an upper part (12) made of a rigid material and containing the plug-in recess (27) and a lower part (13) made of an elastically deformable plastic material, which is attached to the upper part (12).
  8. Router, in particular orbital sander, with a backing pad according to any of claims 1 to 7 and with a retaining device (7) for the releasable attachment of the backing pad, wherein a retaining part (9) of the retaining device (7), which in the mounted state dips into the plug-in recess (27) of the backing pad (8), is provided with engagement projections (16) projecting radially outwards and acting together with the projections (19) of the backing pad (8), axially opposite of which and remote from the backing pad (8) there is provided an annular surface (17), and wherein the annular surface (17) is axially movable and spring-loaded towards the engagement projections (16), its width being less than the thickness of the projections (19) of the backing pad (8), wherein at each engagement projection (16) a partial annular groove (18) bounded in the axial direction by the engagement projection (16) on one side and by the annular surface (17) on the other side is formed, and wherein the engagement projections (16) are provided on their inside bounding the respective partial annular groove (18) with an inclined surface (25) facilitating the insertion of the bayonet projections (19) represented by the projections of the backing pad (8), so that the annular surface (17) is displaced in the axial direction against the force of the spring as the backing pad (8) is turned in through the bayonet projections (19), thus clamping the bayonet projections (19) in the partial annular grooves (18) by the force of the spring.
  9. Router according to claim 8, characterised in that the annular surface (17) of the retaining device (7) is represented by a thrust ring (20) which is axially movable relative to the retaining part (9), and in that the spring force is applied by a belleville spring (23).
  10. Router according to claim 9, characterised in that the conical belleville spring (23) widens towards the thrust ring (20) and is radially supported on the inside by an annular shoulder (24) of the retaining device (7) and on the outside by the thrust ring (20).
  11. Router according to any of claims 8 to 10, characterised in that the retaining part (9) is provided with three engagement projections (16).
EP06023804A 2005-12-12 2006-11-16 Grinding disc with quick mount-and-release mechanism and disc grinder with such a grinding disc Active EP1795301B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09000740A EP2052813B1 (en) 2005-12-12 2006-11-16 Plate grinder and grind plate for a plate grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510060514 DE102005060514A1 (en) 2005-12-12 2005-12-12 Disc sander and sanding pad for a disc sander

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09000740A Division EP2052813B1 (en) 2005-12-12 2006-11-16 Plate grinder and grind plate for a plate grinder

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EP1795301B1 true EP1795301B1 (en) 2009-03-11

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EP09000740A Active EP2052813B1 (en) 2005-12-12 2006-11-16 Plate grinder and grind plate for a plate grinder

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007014470U1 (en) * 2007-10-16 2008-02-07 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg Grinding wheel for a machining of objects, in particular stones, bricks or the like, or wheel body or slip ring or closure piece for such a grinding wheel
DE202010010653U1 (en) 2010-07-26 2011-11-15 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg Machine with tool quick change system
CN102814790A (en) * 2011-06-09 2012-12-12 苏州宝时得电动工具有限公司 Power tool and working head and adaptor applied to power tool
CN102814793B (en) * 2011-06-09 2015-08-19 苏州宝时得电动工具有限公司 Power tool and be applied to working head and the adapter of this power tool
CN104070506A (en) * 2013-03-27 2014-10-01 苏州宝时得电动工具有限公司 Multifunctional machine
NL2016421B1 (en) 2016-03-11 2017-10-02 Blastrac B V Double-sided sanding disc with quick-change system.
ITUA20161640A1 (en) * 2016-03-14 2017-09-14 Costa Levigatrici Spa Backing pad and quick release hook holder
DK178917B1 (en) * 2016-05-31 2017-05-22 Kadicma Aps Bayonet coupling and machining unit with such bayonet coupling
WO2019123310A1 (en) * 2017-12-20 2019-06-27 Fabrica Machinale S.R.L. Method and apparatus for carrying out the replacement of an abrasive element in a machine for working surfaces
DE102018106347A1 (en) * 2018-03-19 2019-09-19 Boeck Gmbh CONNECTION DEVICE
EP4063069B1 (en) 2021-03-23 2022-12-07 Andrea Valentini Plate-like backing pad adapted for releasable attachment to a hand-held polishing or sanding power tool
FR3126193B1 (en) 2021-08-20 2023-08-11 Gilbert Constructions Mec assembly for the assembly and disassembly of a rotating tool on a rotating drive spindle of a machine tool
CN114274044B (en) * 2021-12-31 2023-12-26 厦门创云精智机械设备股份有限公司 Grinding wheel and bench grinder using same
CN115781516B (en) * 2023-02-07 2023-04-25 强信机械科技(莱州)有限公司 Five-axis numerical control grinding equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131326A1 (en) * 2001-06-28 2003-01-16 Bosch Gmbh Robert Tool for grinding machines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES207480Y (en) * 1973-11-14 1976-07-16 Mario Lazzari ABRASIVE WHEEL FOR POLISHING AND POLISHING MACHINES OF MARBLE AND STONES.
DE10017458A1 (en) 2000-04-07 2001-10-18 Bosch Gmbh Robert Tool holder for a grinding machine has insert tool actively connected to drive shaft through follower device with positive engagement through spring-tensioned detent element
DE10017457A1 (en) * 2000-04-07 2001-10-11 Bosch Gmbh Robert Grinder tool holder
DE10030586A1 (en) * 2000-06-21 2002-01-10 Bruno Schmitz Schleifmittelwer Tool
DE20205495U1 (en) 2001-06-21 2002-08-01 Bruno Schmitz Schleifmittelwer Fastening device, clamping system and assigned tools
DE102004001580B3 (en) 2004-01-10 2005-06-23 Festool Gmbh Coupling device securing polishing disc to rotary machine tool has fixing part associated with polishing disc screwed to fixing part associated with machine tool drive

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131326A1 (en) * 2001-06-28 2003-01-16 Bosch Gmbh Robert Tool for grinding machines

Also Published As

Publication number Publication date
EP2052813B1 (en) 2012-05-16
DE102005060514A1 (en) 2007-06-14
DE502006003079D1 (en) 2009-04-23
EP1795301A1 (en) 2007-06-13
EP2052813A1 (en) 2009-04-29

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