EP1050376A2 - Back-plate for rotating tools for surface finishing - Google Patents

Back-plate for rotating tools for surface finishing Download PDF

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Publication number
EP1050376A2
EP1050376A2 EP00106971A EP00106971A EP1050376A2 EP 1050376 A2 EP1050376 A2 EP 1050376A2 EP 00106971 A EP00106971 A EP 00106971A EP 00106971 A EP00106971 A EP 00106971A EP 1050376 A2 EP1050376 A2 EP 1050376A2
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EP
European Patent Office
Prior art keywords
support plate
plate
plate according
removable
receiving carrier
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.)
Granted
Application number
EP00106971A
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German (de)
French (fr)
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EP1050376A3 (en
EP1050376B1 (en
Inventor
Dieter Kolthoff
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KOLTHOFF AND Co
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KOLTHOFF AND Co
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Filing date
Publication date
Application filed by KOLTHOFF AND Co filed Critical KOLTHOFF AND Co
Publication of EP1050376A2 publication Critical patent/EP1050376A2/en
Publication of EP1050376A3 publication Critical patent/EP1050376A3/en
Application granted granted Critical
Publication of EP1050376B1 publication Critical patent/EP1050376B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • 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

  • Support plate for rotating tools for example as a tool attachment for hand drills, have long been in one piece from an elastomeric material known, with a front adhesive surface, for example, smooth for Glue a grinding or polishing disc with an adhesive back or with a full or partial hook surface ("Velcro") for easy Adhesion of grinding or polishing discs with a suitable back Loop covering is provided.
  • a front adhesive surface for example, smooth for Glue
  • a grinding or polishing disc with an adhesive back or with a full or partial hook surface (“Velcro") for easy Adhesion of grinding or polishing discs with a suitable back Loop covering is provided.
  • the grinding or polishing wheel When working with such a backing pad the grinding or polishing wheel is usually not fully opposed the workpiece pressed on, but angled, depending on the pressure and resilience of the backing plate material a smaller or larger contact area arises.
  • the grinding and polishing discs wear out quickly and are therefore easy to replace.
  • the support plates also experience Wear and damage from careless work,
  • the object of the invention is to provide a support plate that is as uncritical as possible is to be handled and which can be used at different costs Adapts work requirements and in the event of damage in the area of Can cheaply renew adhesive surface.
  • a support plate according to claim 1.
  • Such a Backing pad allows the use of conventional inexpensive grinding, Polishing or the like.
  • Working medium discs on an adhesive surface which on an elastic deformable plate lies and thus without the risk of dangerous Edge lies flat against the workpiece to be machined.
  • this plate can not only be replaced when worn or Damage is present, but also if a softer or firmer pressure is required.
  • Such a removable plate can also be replaced if, for example, a smooth adhesive surface instead of a hook is desired for other working medium discs.
  • a quick-change connection in the manner of a bayonet intervention in particular if possible at a fixed direction of rotation of the rotating tool easy release in the opposite direction. It is understood that quick change connections for this purpose also in another known manner without further notice, for example in the form of "clip" or snap connections.
  • the one behind it normally on the drive side not replaced mounting bracket with a coupling extension in engages the interior of the interchangeable plate, so that it admittedly towards the outside includes the plate material to be specified for the supporting forces, but on the inside is reduced from the material and thus also from the material costs.
  • the interior can the removable plate are firmly supported on the mounting bracket.
  • the removable plate can be broken into a ring shape be or only as a closed adhesive surface on the front thin cover surface are formed.
  • the receiving carrier can advantageously be around the area of the inside Quick change connection around still have a flange with which it supports the removable plate over a ring area, so that the removable plate can accordingly be made thinner and thus material-saving.
  • the removable plate can also be used as a tool in many cases be trained if the material-saving and flexible design of the Removable plate offers a brush-like design.
  • Support plate comprises a receiving carrier 2 and an annular interchangeable plate 3.
  • the receiving carrier 2 consists of one with respect to a central axis 4 essentially axially symmetrical plastic injection molded part with an embedded metal nut 5 that fits on a Unscrew the threaded stub of a drive machine and thus one Forms drive connection.
  • Around this drive connection 5 has the Recording carrier 2 a grip circumference 6 with six ribs 7 for a better Hand or tool attack.
  • the Recording carrier 2 On the front axially opposite the drive connection 5 is the Recording carrier 2 with a coupling extension 8 to a quick change connection equipped with the removable plate 3.
  • the coupling extension is on the radial inside 8 broken through to mother 5, so that there is a free one Access for lock nuts, locking elements and the like.
  • To one Ring collar 9 around the inside of the nut 5, which is to the front of the Support plates protruding from the mother as a protective ring are two blind holes 10,11, arranged radially opposite each other to provide access for one Allow wrenches from the front.
  • the receiving support 2 provides a spiral, slightly undercut edge contour of the coupling extension 8 a snail receptacle that works in conjunction with a suitable Counter contour is very easy to bring into rotation specified direction of rotation at work itself, in the opposite direction but is also easy to solve.
  • the receiving carrier 2 goes along the interchangeable plate 3 a rigid, positive connection.
  • the smooth undercut shape with a sloping flank is easier and faster to do handle as a stepped edge contour.
  • the receiving carrier 2 supports the removable plate 3 with a Flange 13 over part of the (larger) radius of the removable plate 3 from, so that these are relative given the deformability and flexibility can be thin and therefore inexpensive.
  • the interchangeable plate 3 rests with a rear annular surface 14 on a suitable annular surface 15 of the flange 13. In the present case, both ring surfaces are flat, although this is not absolutely necessary as long as there is only a suitable adaptation. In an annular region 16 that extends beyond the flange 13 of the receiving carrier 2, the thickness of the exchangeable plate 3 decreases towards an outer edge 17. It is of particular interest that the interchangeable plate 3 is not planar in an edge region of the front side 18, but is raised or spherical, so that a slightly oblique placement of the support plate is already partially taken into account. The interchangeable plate 3 and thus also its front side 18 have a recess on the inside, the spiral edge 19 of which cooperates with the coupling extension 8 of the receiving carrier 2.
  • the opening in the front side 18 is harmless insofar as only the peripheral regions of the exchangeable plate are required for the work intervention. Otherwise, the middle area could also be closed off on the front side 18 by a possibly thin-walled inner area. However, the quick-change connection to the receiving carrier 2 would then be covered and thus more difficult to control.
  • a working medium disc - for example a grinding disc - is to be attached with an adhesive back and removed when it is used.
  • the interchangeable plate 3 can depend on the plate thickness and the course of the plate thickness towards the edge, from the choice of material, from the outside diameter and / or from the frusto-conical or convex shape of the front 18 can be varied the different work equipment and the different deformations to offer appropriate panel properties when working. There are different To provide removable disks without this being the case with a inventive material-saving design and a simple Exchange option would be expensive. Removable disks can also be used to be present in exchange, in which the surface is not only as with present embodiment, smooth and thus as an adhesive surface for self-adhesive Suitable work tool discs, but also with hook trimmings or with Clamping elements are provided.
  • removable disks can be exchanged against the removable disks described above, which themselves are designed as work equipment.
  • this removable plate can be used be equipped with brushes or nubs for post-processing and can be used after grinding or with abrasive filled Bristles can be provided for grinding.
  • a further interchangeable plate 23 is shown, which is opposite the 4 and 5 a smaller outer diameter but has the same spiral edge 19 on a free inner Breakthrough opening 24 for placement on a receiving support 2 according to FIG. 1 and 2.
  • the removable plate is made in one piece from an elastomeric material and in this respect, as a whole, being flexible, on the receiving support 2 put on, through this finds firm support.
  • bristle-shaped Extensions 25 each have a conical cone shape that leads to a flat boundary surface taper, this flat boundary surface defining a work surface 26.
  • Such bristle-like extensions 25 are resilient, as you would for Grinding, polishing or brushing required.
  • the flexibility in or against the direction of rotation of the interchangeable plate 23 is made by a 8 supports the cross-sectional shape of the bristle-like extensions 25, which is a larger dimension in the radial direction than in the tangential Direction.
  • the bristle-like extensions 25 are slightly radial placed inwards so that they tend to stand up when rotating than being deflected outwards.
  • the bristle-like extensions 25 are coated with an abrasive, namely powdered corundum, filled and can be used instead of Grinding wheels are used. It is understood that in the elastomer Material of the removable plate 23 other polishing materials can be embedded can or on such extensions as the pin-like extensions 25 can be applied to the surface.
  • an abrasive namely powdered corundum

Abstract

The support plate (1) has at least one elastically deformable exchange plate (3) and an accommodation support (2). The excha plate supports the adhesion surface and has an inner space in which a coupling extension (8) of the accommodation support engage from behind with a bayonet or similar edge-side rapid exchange connection.

Description

Stützteller für rotierende Werkzeuge - etwa als Werkzeugvorsatz für Handbohrmaschinen, sind seit langem in einstückiger Form aus einem elastomeren Material bekannt, wobei eine vorderseitige Haftfläche beispielsweise glatt für das Aufkleben einer Schleif- oder Polierscheibe mit einer Klebrückseite oder aber mit einer voll- oder teilflächigen Hakenhaftfläche ("Klettverschluß") zum einfachen Anhaften von Schleif- oder Polierscheiben mit einem passenden rückseitigen Schlaufenbelag versehen ist. Bei der Arbeit mit einem solchen Stützteller wird die Schleif- oder Polierscheibe normalerweise nicht vollflächig gegen das Werkstück angedrückt, sondern winklig angelegt, wobei je nach Andruck und Nachgiebigkeit des Stütztellermaterials eine kleinere oder größere Andruckfläche entsteht. Die Schleif- und Polierscheiben verbrauchen sich schnell und sind deshalb leicht auszuwechseln. Allerdings erfahren auch die Stützteller Abnutzungen und Beschädigungen bei unachtsamer Arbeit, bei zu spätem Wechsel der Arbeitsmittelscheibe, bei schwierigen Oberflächengestaltungen sowie bei schlecht angepaßter Nachgiebigkeit des Stütztellers.Support plate for rotating tools - for example as a tool attachment for hand drills, have long been in one piece from an elastomeric material known, with a front adhesive surface, for example, smooth for Glue a grinding or polishing disc with an adhesive back or with a full or partial hook surface ("Velcro") for easy Adhesion of grinding or polishing discs with a suitable back Loop covering is provided. When working with such a backing pad the grinding or polishing wheel is usually not fully opposed the workpiece pressed on, but angled, depending on the pressure and resilience of the backing plate material a smaller or larger contact area arises. The grinding and polishing discs wear out quickly and are therefore easy to replace. However, the support plates also experience Wear and damage from careless work, too late Change of the working medium disc for difficult surface designs as well as with poorly adjusted resilience of the support plate.

Daneben gibt es formsteife rotierende Werkzeuge zur Oberflächenfeinbearbeitung etwa in Form von Lamellenschleifscheiben, bei denen Streifen von Arbeitsmittellagen lamellenförmig übereinanderliegend auf eine Wechselplatte aufgebracht sind, und zwar unter Ausbildung einer erhabenen stumpfkegeligen Form, die üblicherweise nur jeweils mit einem Teilbereich des Umfangs an der zu bearbeitenden Oberfläche anliegt. Eine solche Wechselplatte mit einem Bajonettanschluß oder dgl. Verbindung zu einem Aufnahmeträger ist, wenn das Arbeitsmittel verbraucht ist, mit dem tragenden, gegebenenfalls beschädigten Wechselplattenkörper auszuwechseln.There are also dimensionally stable rotating tools for surface finishing for example in the form of flap discs with strips of working material layers laminate on top of each other on a removable plate are applied, with the formation of a raised truncated cone Shape that usually only with a portion of the circumference at the surface to be machined. Such a removable plate with a bayonet connection or the like. Connection to a recording medium, if that Work equipment is used up with the load-bearing, possibly damaged Replaceable plate body.

Allerdings ist eine solche Lamellenschleifscheibe teuer. Überdies fordert die steife Ausgestaltung der Lamellenschleifscheibe eine relativ feinfühlige und sorgfältige Arbeit, damit nicht durch Verkanten punktuelle Ungleichmäßigkeiten in der Bearbeitung entstehen.However, such a flap grinding wheel is expensive. In addition, the stiff design of the flap disc a relatively sensitive and careful work, so that there is no jamming of specific irregularities arise in processing.

Aufgabe der Erfindung ist es, einen Stützteller zu schaffen, der möglichst unkritisch zu handhaben ist und der sich mit geringem Kostenaufwand an unterschiedliche Arbeitsanforderungen anpaßt und bei Beschädigung im Bereich der Haftfläche preisgünstig erneuern läßt.The object of the invention is to provide a support plate that is as uncritical as possible is to be handled and which can be used at different costs Adapts work requirements and in the event of damage in the area of Can cheaply renew adhesive surface.

Diese Aufgabe wird mit einem Stützteller nach dem Anspruch 1 gelöst. Ein solcher Stützteller erlaubt die Verwendung herkömmlicher preisgünstiger Schleif-, Polier- oder dgl. Arbeitsmittelscheiben auf einer Haftfläche, die auf einer elastisch verformbaren Platte liegt und damit ohne die Gefahr des gefährlichen Kantens flächig an dem zu bearbeitenden Werkstück anliegt. Als Wechselplatte kann diese Platte nicht nur ausgetauscht werden, wenn eine Abnutzung oder Beschädigung vorliegt, sondern auch, wenn ein weicherer oder festerer Andruck gefordert wird. Desgleichen kann eine solche Wechselplatte ausgetauscht werden, wenn etwa statt eines Hakenbesatzes eine glatte Haftfläche für andere Arbeitsmittelscheiben gewünscht ist.This object is achieved with a support plate according to claim 1. Such a Backing pad allows the use of conventional inexpensive grinding, Polishing or the like. Working medium discs on an adhesive surface, which on an elastic deformable plate lies and thus without the risk of dangerous Edge lies flat against the workpiece to be machined. As a removable plate this plate can not only be replaced when worn or Damage is present, but also if a softer or firmer pressure is required. Such a removable plate can also be replaced if, for example, a smooth adhesive surface instead of a hook is desired for other working medium discs.

Eine Schnellwechselverbindung nach Art eines Bajonetteingriffs möglichst insbesondere bei fest vorgegebener Drehrichtung des rotierenden Werkzeugs ein einfaches Lösen in Gegenrichtung. Es versteht sich, daß Schnellwechselverbindungen zu diesem Zwecke auch ohne weiteres in anderer bekannter Weise, etwa in Form von "Klipp"- oder Rastverbindungen zu erstellen ist.A quick-change connection in the manner of a bayonet intervention, in particular if possible at a fixed direction of rotation of the rotating tool easy release in the opposite direction. It is understood that quick change connections for this purpose also in another known manner without further notice, for example in the form of "clip" or snap connections.

Besonders vorteilhaft ist, wenn der dahinterliegende, antriebsseitig normalerweise nicht ausgewechselte Aufnahmeträger mit einem Kupplungsfortsatz in den Innenraum der Wechselplatte eingreift, so daß diese zwar nach außen hin das für die Stützkräfte vorzugebende Plattenmaterial umfaßt, innenseitig aber vom Material her und damit auch von den Materialkosten reduziert ist. Da in diesem Bereich keine Nachgiebigkeit wie am Rand benötigt wird, kann der Innenbereich der Wechselplatte fest auf den Aufnahmeträger gestützt werden. In diesem Bereich kann die Wechselplatte insgesamt zu einer Ringform durchbrochen sein oder aber nur zu einer geschlossenen Haftfläche vorderseitig als dünne Abdeckfläche ausgebildet werden.It is particularly advantageous if the one behind it, normally on the drive side not replaced mounting bracket with a coupling extension in engages the interior of the interchangeable plate, so that it admittedly towards the outside includes the plate material to be specified for the supporting forces, but on the inside is reduced from the material and thus also from the material costs. There in In this area, no flexibility as required at the edge, the interior can the removable plate are firmly supported on the mounting bracket. In In this area, the removable plate can be broken into a ring shape be or only as a closed adhesive surface on the front thin cover surface are formed.

Vorteilhaft kann der Aufnahmeträger um den Bereich der innenliegende Schnellwechselverbindung herum noch einen Flansch aufweisen, mit dem er die Wechselplatte über einen Ringbereich abstützt, so daß die Wechselplatte dementsprechend dünner und damit materialsparend ausgebildet sein kann.The receiving carrier can advantageously be around the area of the inside Quick change connection around still have a flange with which it supports the removable plate over a ring area, so that the removable plate can accordingly be made thinner and thus material-saving.

Die Wechselplatte kann aber auch in vielen Fällen günstig selbst als Werkzeug ausgebildet sein, wenn etwa die materialsparende und flexible Gestaltung der Wechselplatte eine bürstenartige Ausgestaltung anbietet.The removable plate can also be used as a tool in many cases be trained if the material-saving and flexible design of the Removable plate offers a brush-like design.

Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachfolgend näher beschrieben. In der Zeichnung zeigen:

Fig. 1
Vorderansicht eines Aufnahmeträgers zu einem Stützteller,
Fig. 2
Seitenansicht des Aufnahmeträgers nach Fig. 1,
Fig. 3
Schnitt nach Linie III-III in Fig. 1 durch den Aufnahmeträger, ergänzt durch eine Wechselplatte,
Fig. 4
Vorderansicht der Wechselplatte aus Fig. 3,
Fig. 5
Schnitt nach Linie V-V durch die Wechselplatte gemäß Fig. 4,
Fig. 6
Ansicht einer zweiten, als Schleifbürste ausgebildeten Wechselplatte von unten,
Fig. 7
Schnitt nach Linie VII-VII in Fig. 6,
Fig. 8
vergrößertes Detail VIII aus Fig. 6 und
Fig. 9
vergrößertes Detail IX in Fig. 7.
Two embodiments of the invention are shown in the drawing and are described in more detail below. The drawing shows:
Fig. 1
Front view of a mounting bracket for a support plate,
Fig. 2
Side view of the receiving medium according to FIG. 1,
Fig. 3
Section along line III-III in Fig. 1 by the receiving support, supplemented by a removable plate,
Fig. 4
Front view of the removable plate from Fig. 3,
Fig. 5
Section along line VV through the removable plate according to FIG. 4,
Fig. 6
View from below of a second exchangeable plate designed as a grinding brush,
Fig. 7
Section along line VII-VII in Fig. 6,
Fig. 8
enlarged detail VIII from FIGS. 6 and
Fig. 9
enlarged detail IX in FIG. 7.

Ein in der schnittbildlichen Darstellung gemäß Fig. 3 insgesamt mit 1 bezeichneter Stützteller umfaßt einen Aufnahmeträger 2 und eine ringförmige Wechselplatte 3. Der Aufnahmeträger 2 besteht aus einem bezüglich einer Mittelachse 4 im wesentlichen axialsymmetrisch gestalteten Kunststoff-Spritzgußteil mit einer eingebetteten Metallmutter 5, die auf einen passenden Gewindestumpf einer Antriebsmaschine aufzuschrauben ist und somit einen Antriebsanschluß bildet. Um diesen Antriebsanschluß 5 herum weist der Aufnahmeträger 2 einen Griffumfang 6 mit sechs Rippen 7 für einen besseren Hand- oder Werkzeugangriff auf.An overall designated 1 in the sectional representation according to FIG. 3 Support plate comprises a receiving carrier 2 and an annular interchangeable plate 3. The receiving carrier 2 consists of one with respect to a central axis 4 essentially axially symmetrical plastic injection molded part with an embedded metal nut 5 that fits on a Unscrew the threaded stub of a drive machine and thus one Forms drive connection. Around this drive connection 5 has the Recording carrier 2 a grip circumference 6 with six ribs 7 for a better Hand or tool attack.

Auf der axial dem Antriebsanschluß 5 gegenüberliegenden Vorderseite ist der Aufnahmeträger 2 mit einem Kupplungsfortsatz 8 zu einer Schnellwechselverbindung mit der Wechselplatte 3 ausgestattet. Radial innenseitig ist der Kupplungsfortsatz 8 zu Mutter 5 hin durchbrochen, so daß es hier einen freien Durchgriff für Kontermuttern, Sicherungselemente und dgl. gibt. Um einen Ringbund 9 um den Innenbereich der Mutter 5 herum, der zur Vorderseite des Stütztellers von der Mutter her als Schutzring vorsteht, sind zwei Sacklöcher 10,11, einander radial gegenüberliegend angeordnet, um den Zugriff für einen Spannschlüssel von der Vorderseite her zu ermöglichen.On the front axially opposite the drive connection 5 is the Recording carrier 2 with a coupling extension 8 to a quick change connection equipped with the removable plate 3. The coupling extension is on the radial inside 8 broken through to mother 5, so that there is a free one Access for lock nuts, locking elements and the like. To one Ring collar 9 around the inside of the nut 5, which is to the front of the Support plates protruding from the mother as a protective ring are two blind holes 10,11, arranged radially opposite each other to provide access for one Allow wrenches from the front.

Wie aus den Ansichten des Aufnahmeträgers 2 aus Fig. 1 und 2 erkennbar ist, liefert eine spiralförmige, leicht hinterschnittene Randkontur des Kupplungsfortsatzes 8 eine Schneckenaufnahme, die im Zusammenwirken mit einer passenden Gegenkontur sehr einfach drehend in Eingriff zu bringen ist und sich bei vorgegebener Drehrichtung bei der Arbeit selbst festzieht, in Gegenrichtung aber auch leicht zu lösen ist. In diesem Bereich geht der Aufnahmeträger 2 mit der Wechselplatte 3 eine steife, formschlüssige Verbindung ein. Die glatte Hinterschneidungsform mit schräger Flanke ist dabei leichter und schneller zu handhaben als etwa eine gestufte Randkontur.As can be seen from the views of the receiving support 2 from FIGS. 1 and 2, provides a spiral, slightly undercut edge contour of the coupling extension 8 a snail receptacle that works in conjunction with a suitable Counter contour is very easy to bring into rotation specified direction of rotation at work itself, in the opposite direction but is also easy to solve. In this area, the receiving carrier 2 goes along the interchangeable plate 3 a rigid, positive connection. The smooth undercut shape with a sloping flank is easier and faster to do handle as a stepped edge contour.

Darüber hinaus stützt der Aufnahmeträger 2 die Wechselplatte 3 mit einem Flansch 13 noch über einen Teil des (größeren) Radius der Wechselplatte 3 ab, so daß diese bei vorgegebener Verformbarkeit und Nachgiebigkeit relativ dünn und damit preiswert gestaltet sein kann. In addition, the receiving carrier 2 supports the removable plate 3 with a Flange 13 over part of the (larger) radius of the removable plate 3 from, so that these are relative given the deformability and flexibility can be thin and therefore inexpensive.

Dabei liegt die Wechselplatte 3 mit einer rückseitigen Ringfläche 14 an einer passenden Ringfläche 15 des Flansches 13 an. Beide Ringflächen sind im vorliegenden Fall planeben ausgestaltet, wenngleich dies nicht zwingend erforderlich ist, solange nur eine geeignete Anpassung vorliegt, In einer über den Flansch 13 des Aufnahmeträgers 2 hinausgehenden Ringbereich 16 nimmt die Stärke der Wechselplatte 3 zu einem äußeren Rand 17 hin ab. Dabei ist von besonderem Interesse, daß die Wechselplatte 3 in einem Randbereich der Vorderseite 18 nicht planeben, sondern erhaben bzw. ballig ausgebildet ist, insofern also schon ein leicht schräges Aufsetzen des Stütztellers teilweise einrechnet.
Die Wechselplatte 3 und damit auch deren Vorderseite 18 weisen innenseitig eine Ausnehmung auf, deren spiralförmiger Rand 19 mit dem Kupplungsfortsatz 8 des Aufnahmeträgers 2 zusammenwirkt. Die Durchbrechung der Vorderseite 18 ist unschädlich, soweit für den Arbeitseingriff nur die Umfangsbereiche der Wechselplatte benötigt werden. Anderenfalls könnte auch der mittlere Bereich auch an der Vorderseite 18 durch einen gegebenenfalls dünnwandigen Innenbereich abgeschlossen sein. Allerdings wäre dann die Schnellwechselverbindung zum Aufnahmeträger 2 hin verdeckt und somit schlechter kontrollierbar. Auf die Vorderseite 18 ist eine Arbeitsmittelscheibe - etwa eine Schleifscheibe - mit einem Kleberücken anzuheften und bei Verbrauch abzuziehen.The interchangeable plate 3 rests with a rear annular surface 14 on a suitable annular surface 15 of the flange 13. In the present case, both ring surfaces are flat, although this is not absolutely necessary as long as there is only a suitable adaptation. In an annular region 16 that extends beyond the flange 13 of the receiving carrier 2, the thickness of the exchangeable plate 3 decreases towards an outer edge 17. It is of particular interest that the interchangeable plate 3 is not planar in an edge region of the front side 18, but is raised or spherical, so that a slightly oblique placement of the support plate is already partially taken into account.
The interchangeable plate 3 and thus also its front side 18 have a recess on the inside, the spiral edge 19 of which cooperates with the coupling extension 8 of the receiving carrier 2. The opening in the front side 18 is harmless insofar as only the peripheral regions of the exchangeable plate are required for the work intervention. Otherwise, the middle area could also be closed off on the front side 18 by a possibly thin-walled inner area. However, the quick-change connection to the receiving carrier 2 would then be covered and thus more difficult to control. On the front side 18, a working medium disc - for example a grinding disc - is to be attached with an adhesive back and removed when it is used.

Die Wechselplatte 3 kann von der Plattenstärke, von dem Plattenstärkenverlauf zum Rand hin, vom Materialwahl, vom Außendurchmesser und/oder von der stumpfkegeligen oder konvexen Form der Vorderseite 18 variiert werden, um den unterschiedlichen Arbeitsmitteln und den unterschiedlichen Verformungen beim Arbeiten entsprechende Platteneigenschaften zu bieten. Dazu sind unterschiedliche Wechselplatten zur Verfügung zu stellen, ohne daß dies bei einer erfindungsgemäßen materialsparenden Ausgestaltung und einer einfachen Austauschmöglichkeit aufwendig würde. Desgleichen können Wechselplatten im Austausch vorhanden sein, bei denen die Oberfläche nicht nur, wie beim vorliegenden Ausführungsbeispiel, glatt und damit als Haftfläche für selbstklebende Arbeitsmittelscheiben geeignet, sondern auch mit Hakenbesatz oder mit Klemmelementen versehen sind. Ferner können Wechselplatten im Austausch gegen die oben beschriebenen Wechselplatten vorgesehen werden, die selbst als Arbeitsmittel ausgebildet sind. Beispielsweise kann diese Wechselplatte mit einem Bürsten- oder Noppenbesatz für Nachbearbeitungen ausgestattet sein und nach einem Schleifen eingesetzt werden oder aber mit schleifmittelgefüllten Borsten zum Schleifen vorgesehen sein.The interchangeable plate 3 can depend on the plate thickness and the course of the plate thickness towards the edge, from the choice of material, from the outside diameter and / or from the frusto-conical or convex shape of the front 18 can be varied the different work equipment and the different deformations to offer appropriate panel properties when working. There are different To provide removable disks without this being the case with a inventive material-saving design and a simple Exchange option would be expensive. Removable disks can also be used to be present in exchange, in which the surface is not only as with present embodiment, smooth and thus as an adhesive surface for self-adhesive Suitable work tool discs, but also with hook trimmings or with Clamping elements are provided. Furthermore, removable disks can be exchanged against the removable disks described above, which themselves are designed as work equipment. For example, this removable plate can be used be equipped with brushes or nubs for post-processing and can be used after grinding or with abrasive filled Bristles can be provided for grinding.

In Fig. 6 und 7 ist eine weitere Wechselplatte 23 dargestellt, die gegenüber der Wechselplatte gemäß Fig. 4 und 5 zwar einen kleineren Außendurchmesser aufweist aber den gleichen spiralförmigen Rand 19 an einer freien inneren Durchbruchsöffnung 24 zum Aufsetzen auf einen Aufnahmeträger 2 nach Fig. 1 und 2. Die Wechselplatte ist einstückig aus einem elastomeren Material ausgebildet und insofern insgesamt biegsam, wobei sie, auf den Aufnahmeträger 2 aufgesetzt, durch diesen einen festen Rückhalt findet.6 and 7, a further interchangeable plate 23 is shown, which is opposite the 4 and 5 a smaller outer diameter but has the same spiral edge 19 on a free inner Breakthrough opening 24 for placement on a receiving support 2 according to FIG. 1 and 2. The removable plate is made in one piece from an elastomeric material and in this respect, as a whole, being flexible, on the receiving support 2 put on, through this finds firm support.

Das relativ weiche elastomere Material ermöglicht die Ausbildung von borstenförmigen Fortsätzen 25, wie sie auch in der dreifach vergrößerten Darstellung in Fig. 8 und 9 zu sehen sind. Diese borstenförmigen Fortsätze 25 haben jeweils eine konische Zapfenform, die zu einer planen Begrenzungsfläche hin zulaufen, wobei diese plane Begrenzungsfläche eine Arbeitsfläche 26 definiert. Solche borstenartigen Fortsätze 25 sind elastisch nachgiebig, wie man es für Schleifarbeiten, Polierarbeiten oder Bürstenarbeiten verlangt. Die Flexibilität in bzw. gegen die Drehrichtung der Wechselplatte 23 wird noch durch eine aus Fig. 8 zu ersehende Querschnittsform der borstenartigen Fortsätze 25 unterstützt, die eine größere Abmessung in radialer Richtung als in tangentialer Richtung aufweist. Überdies sind die borstenartigen Fortsätze 25 leicht radial nach innen gestellt, so daß sie bei der rotierenden Arbeitsweise eher aufgerichtet als nach außen hin ausgelenkt werden.The relatively soft elastomeric material enables the formation of bristle-shaped Extensions 25, as shown in the three times enlarged 8 and 9 can be seen. These bristle-shaped extensions 25 each have a conical cone shape that leads to a flat boundary surface taper, this flat boundary surface defining a work surface 26. Such bristle-like extensions 25 are resilient, as you would for Grinding, polishing or brushing required. The flexibility in or against the direction of rotation of the interchangeable plate 23 is made by a 8 supports the cross-sectional shape of the bristle-like extensions 25, which is a larger dimension in the radial direction than in the tangential Direction. In addition, the bristle-like extensions 25 are slightly radial placed inwards so that they tend to stand up when rotating than being deflected outwards.

Im vorliegenden Fall sind die borstenartigen Fortsätze 25 mit einem Schleifmittel, nämlich pulverförmigem Korund, gefüllt und können damit anstelle von Schleifscheiben eingesetzt werden. Es versteht sich, daß in das elastomere Material der Wechselplatte 23 andere polierende Materialien eingebettet werden können oder auch auf derartige Fortsätze wie die zapfenartigen Fortsätze 25 an der Oberfläche aufgebracht sein können. Der Vorteil einer sehr einfachen, leicht herstellbaren und materialsparenden Wechselplatte wie auch das überaus schnelle Auswechseln bleiben dabei erhalten.In the present case, the bristle-like extensions 25 are coated with an abrasive, namely powdered corundum, filled and can be used instead of Grinding wheels are used. It is understood that in the elastomer Material of the removable plate 23 other polishing materials can be embedded can or on such extensions as the pin-like extensions 25 can be applied to the surface. The advantage of a very simple, easy to manufacture and material-saving removable plate like that extremely quick replacements are retained.

Claims (12)

Stützteller (1) für rotierende Werkzeuge zur Oberflächenfeinbearbeitung wie Schleifen und Polieren mit einer vorderseitigen Arbeitsfläche oder einer Haftfläche (18) zum lösbaren Aufbringen einer Schleif-, Polier- oder dgl. Arbeitsmittelscheibe und einem rückseitigen Antriebsanschluß (5), dadurch gekennzeichnet, daß der Stützteller (1) zumindest eine elastisch verformbare Wechselplatte (3) und einen Aufnahmeträger (2) umfaßt, wobei die Wechselplatte (3) die Arbeits- bzw. Haftfläche (18) trägt und einen Innenraum aufweist, in den von hinten ein Kupplungsfortsatz (8) des Aufnahmeträgers (2) mit einer Bajonett- oder dergleichen randseitigen Schnellwechselverbindung eingreift.Support plate (1) for rotating tools for surface finishing such as grinding and polishing with a front working surface or an adhesive surface (18) for releasably applying a grinding, polishing or similar working medium disc and a rear drive connection (5), characterized in that the supporting plate (1) comprises at least one elastically deformable interchangeable plate (3) and a receiving carrier (2), the interchangeable plate (3) supporting the working or adhesive surface (18) and having an interior space into which a coupling extension (8) of the Receiving carrier (2) engages with a bayonet or the like quick change connection on the edge. Stützteller (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Wechselplatte (3) ringförmig mit einem durchgängigen Innenraum ausgebildet ist.Support plate (1) according to claim 1, characterized in that the removable plate (3) is annular with a continuous interior. Stützteller (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wechselplatte (3) nicht stärker als 10 mm ist und in einem an den Innenraum angrenzenden Randbereich (14) auf einem Flansch (15) des Aufnahmeträgers (2) aufliegt.Support plate (1) according to claim 1 or 2, characterized in that the Exchangeable plate (3) is not thicker than 10 mm and in one to the interior adjacent edge area (14) on a flange (15) of the receiving carrier (2) rests. Stützteller (1) nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Wechselplatte (3) eine zum Außenrand (17) abnehmende Stärke aufweist.Support plate (1) according to claim 1, 2 or 3, characterized in that the Removable plate (3) has a decreasing thickness towards the outer edge (17). Stützteller nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schnellwechselverbindung als Schneckenaufnahme (12,19) mit einer hinterschnittenen spiralförmigen Randkontur ausgebildet ist. Support plate according to one of claims 1 to 4, characterized in that the quick-change connection as a screw holder (12, 19) with an undercut spiral edge contour is formed. Stützteller nach Anspruch 5, dadurch gekennzeichnet, daß die Randkontur (12,19) in Form schräger Außenkanten hinterschnitten ist.Support plate according to claim 5, characterized in that the edge contour (12,19) is undercut in the form of inclined outer edges. Stützteller nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Haftfläche (18) als Kleb-Angriffsfläche ausgebildet ist.Support plate according to one of claims 1 to 6, characterized in that the adhesive surface (18) is designed as an adhesive contact surface. Stützteller nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Haftfläche (18) mit einem Hakenbesatz zur Kletthaftung versehen ist.Support plate according to one of claims 1 to 6, characterized in that the adhesive surface (18) is provided with a hook for Velcro. Stützteller nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Wechselplatte (3) aus einem elastomeren Kunststoff geformt ist.Support plate according to one of claims 1 to 8, characterized in that the interchangeable plate (3) is molded from an elastomeric plastic. Stützteller nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Aufnahmeträger (2) aus einem Kunststoffspritzgußteil mit einem eingebetteten Metallelement (5) für den Antriebsanschluß ausgebildet ist.Support plate according to one of claims 1 to 9, characterized in that that the receiving carrier (2) from a plastic injection molded part with an embedded Metal element (5) is formed for the drive connection. Stützteller nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß er eine ringförmige Arbeitsfläche (26) aufweist, die durch borstenartige Fortsätze (25) einer aus einem elastomerem Kunststoff hergestellten Wechselplatte (23) gebildet ist.Support plate according to one of claims 1 to 7, characterized in that that it has an annular working surface (26) by bristle-like Extensions (25) of a removable plate made of an elastomeric plastic (23) is formed. Stützteller nach Anspruch 11, dadurch gekennzeichnet, daß die borstenartigen Fortsätze (25) mit einem Schleifmittel gefüllt sind.Support plate according to claim 11, characterized in that the bristle-like Extensions (25) are filled with an abrasive.
EP00106971A 1999-04-09 2000-04-01 Back-plate for rotating tools for surface finishing Expired - Lifetime EP1050376B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29906328U DE29906328U1 (en) 1999-04-09 1999-04-09 Support plate for rotating tools for surface finishing
DE29906328U 1999-04-09

Publications (3)

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EP1050376A2 true EP1050376A2 (en) 2000-11-08
EP1050376A3 EP1050376A3 (en) 2003-05-02
EP1050376B1 EP1050376B1 (en) 2005-03-09

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ID=8071981

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US (1) US6530828B1 (en)
EP (1) EP1050376B1 (en)
AT (1) ATE290454T1 (en)
DE (2) DE29906328U1 (en)
ES (1) ES2238215T3 (en)

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US9387569B2 (en) * 2013-04-27 2016-07-12 John Blick Leather head finishing system having plurality of apertures and angled shoe rails
US11518001B2 (en) 2018-02-20 2022-12-06 Weiler Corporation Backing pad assembly with anti-rotational locking feature for resin fiber discs
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Also Published As

Publication number Publication date
ES2238215T3 (en) 2005-09-01
ATE290454T1 (en) 2005-03-15
EP1050376A3 (en) 2003-05-02
DE50009691D1 (en) 2005-04-14
DE29906328U1 (en) 1999-06-24
US6530828B1 (en) 2003-03-11
EP1050376B1 (en) 2005-03-09

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