EP1100652B1 - Sanding device for curved surfaces - Google Patents

Sanding device for curved surfaces Download PDF

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Publication number
EP1100652B1
EP1100652B1 EP99963137A EP99963137A EP1100652B1 EP 1100652 B1 EP1100652 B1 EP 1100652B1 EP 99963137 A EP99963137 A EP 99963137A EP 99963137 A EP99963137 A EP 99963137A EP 1100652 B1 EP1100652 B1 EP 1100652B1
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EP
European Patent Office
Prior art keywords
supporting face
guide devices
head
curved
elastic element
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Expired - Lifetime
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EP99963137A
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German (de)
French (fr)
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EP1100652A1 (en
Inventor
Bernhard Ganser
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Individual
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/26Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B17/00Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/04Headstocks; Working-spindles; Features relating thereto

Definitions

  • the invention relates to a grinding device according to the preamble of claim 1.
  • a grinding device is known from DE 42 33 728 A.
  • the object of the invention is to provide a grinding device create with the different curved surfaces are easy to grind.
  • the bearing surface is curved and has a curved top and bottom, the bearing surface is fastened to the head via an elastic element, and at least two guide devices are provided which cause the bearing surface of the head reciprocally along a curved surface with the same radius of curvature as the support surface, achieved that a grinding device is created in which the oscillating movement of the surface of its support surface due to the fact that the underside of its support surface has the same radius of curvature as the surface of the support surface and the underside of the support surface is guided by at least two guide devices which are arranged so as to be stationary with respect to the support surface in such a way that a lateral oscillating movement to the axis of the shaft mounted in the support device is prevented and the underside of the support surface is guided against the respective guide devices during a lateral movement of the shaft with pressure of different strengths in time, in conjunction with an elastic element which is provided on the head of the shaft and via which the support surface and the shaft are connected to one another, along a imaginary
  • the sandpaper to be used with the sandpaper support device can preferably be applied interchangeably to the support surface, for which purpose it is either designed as adhesive sandpaper or is provided with integrated eyelets which interact with hooks which are provided on the support surface or at another location of the device according to the invention ,
  • the sandpaper is not rosette-like but to ensure that no wrinkling occurs in the paper.
  • the grinding device according to the invention are the Guide devices on the underside of the contact surface intended.
  • the Management facilities desired leadership effect of Contact surface reached easily and effectively.
  • the radius of curvature of that of the surface of the Contact surface corresponds.
  • too Refinements of the grinding devices according to the invention conceivable, at which the management facilities Guide surfaces with correspondingly provided Adjacent radius of curvature spatially from the bottom of the contact surface are separated, nevertheless with the Contact surface are mechanically connected.
  • the guide devices of the invention Grinding device are preferably as ball, rolling or Plain bearings trained. This ensures that the desired leadership effect of the management institutions the underside of the contact surface with little friction and under low material wear is feasible.
  • the guidance devices as curved Guide surfaces are formed, which consist of a hard, lubricious material, especially plastic material are made and one to the bottom of the Support surface have adapted curvature.
  • the desired one Leadership effect of the management institutions on the Bottom of the contact surface is particularly special achieved inexpensive way.
  • the Grinding device can three, four or more guidance facilities will be provided. At a Provision of at least three management facilities a particularly robust and precise guidance of the contact surface reached.
  • the elastic element over which the contact surface with the shaft connected in the carrier device is connected is preferably a spring, in particular a spiral spring, educated. This ensures that the Effect of the guide devices caused the stroke Contact surface with respect to the head of the shaft a predetermined, constant force balanced regardless of the respective deflection of the Supporting surface.
  • the elastic element as Disc or as a ring made of an elastic material, especially rubber. Is essential here only that by the management between the head of the shaft and the bearing surface stroke movement caused by the curvature of the underside of the support surface as slow as possible and evenly is balanced.
  • the bearing surface of the grinding device according to the invention can vary depending on the embodiment Radii of curvature for different ones to be ground Have items.
  • the contact surface can for example for grinding convex surfaces be cylindrical with a concave top, or it can be used for grinding concave surfaces be formed convex top.
  • Objects can make the support surface spherical be designed with a concave top, and for grinding
  • the contact surface can be made of concave-spherical surfaces be spherical with a convex top.
  • the guide devices are preferred arranged axially parallel to each other.
  • the Contact surface is spherical, are preferred four guidance devices are provided, in pairs are arranged at right angles to each other.
  • the contact surface can also be designed to be in two or more Planes at least two different curvatures having.
  • the bearing surface of the grinding device according to the invention is preferably made of a hard material, in particular Metal or a hard plastic material.
  • a hard material in particular Metal or a hard plastic material.
  • Foam layer can be soft cushioned or it can have a foam layer on the support surface can be provided, or the support surface itself made of a soft material such as wood or foam be made.
  • the device according to the invention can be an additional one Have eccentric means by means of which the movement the contact surface is controllable.
  • the additional eccentric device can with the help of Centrifugal and / or frictional forces can be controlled.
  • the additional eccentric device is the device according to the invention advantageously so executable that the bearing surface is a non-uniform Movement that has a very fine grinding structure Consequence.
  • the eccentrically mounted carrier device, the therein mounted shaft or the one provided at one end Head is stored in an elongated hole that consists of a Rotational movement of the component in question one-dimensional linear oscillating movement generated.
  • the shaft 16 is rotatable in a bearing device 17 stored, which is decentred in a body device 18 is rotatably mounted.
  • the body device 18 is over driven a shaft 19 which is mounted in a bearing 20 and from a rotor device, not shown is driven.
  • Support surface 11 are on the underside 11 'of the same adjacent roller bearings 21, 21 ', 21' 'and 21' '' arranged, the roller bearings 21 and 21 'and 21' 'and 21' '' are arranged in pairs axially parallel. Similar to that in Rolling bearings shown in FIG. 2 are those in FIG. 3 Rolling bearings 21, 21 ', 21' 'and 21' '' shown in springs 22, 23 mounted reciprocally. This is one circular movement of the spherical bearing surface 11 Operation of the grinding device according to the invention allows.
  • FIGS. 3 and 4 Embodiment of a device 10 according to the invention the in Fig. 4 a cross-sectional view and in Fig.5 the Contact surface 11 and the head 25 in a view from are shown at the rear, the shaft 23 of the head 25 is in a vertically extending slot 29 stored in a component 27 is formed from a Rotational movement of the component concerned a linear, horizontal swinging movement of the head 25 generated.
  • the management facilities are with this Embodiment as curved guide surfaces 31, 31 ' a hard, slidable plastic material and have one on the underside 11 'of the support surface adjusted curvature.
  • This embodiment of the The device according to the invention is particularly suitable for grinding applications suitable where the surface to be sanded bounded on one side by obstructing objects is.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Brushes (AREA)

Description

Die Erfindung betrifft eine Schleifvorrichtung gemäß dem Oberbegriff des Anspruchs 1. Eine solche Vorrichtung is aus DE 42 33 728 A bekannt.The invention relates to a grinding device according to the preamble of claim 1. Such a device is known from DE 42 33 728 A.

Schleifvorrichtungen der eingangs genannten Art werden im Stand der Technik insbesondere dazu benutzt, plane Oberflächen abzuschleifen. Zu diesem Zweck wird auf der Auflagefläche ein Schleifpapier befestigt, mit dem die zu schleifende Oberfläche aufgrund der Exzenterbewegung der in der Trägereinrichtung gelagerten Welle in Form von sich überlagernden harmonischen Schwingungen über die zu schleifende Oberfläche bewegt wird, wodurch diese Oberfläche bei geeignetem Auflagedruck des Schleifpapiers einem Schleifvorgang unterzogen wird. Schwierigkeiten ergeben sich bei den herkömmlichen Schleifvorrichtungen immer dann, wenn gekrümmte Oberflächen zu schleifen sind, da sich dabei die Handhabung einer Schleifvorrichtung aufgrund des Umstandes erschwert, daß immer nur eine punktuelle Auflage des planen Schleifpapiers auf die gekrümmte Oberfläche gegeben ist.Grinding devices of the type mentioned are in State of the art used in particular to plan Sand surfaces. For this purpose, the Support surface attached to an abrasive paper, with which the to grinding surface due to the eccentric movement of the in the shaft mounted in the form of itself overlying harmonic vibrations over the abrasive surface is moved, causing this Surface with a suitable contact pressure of the sandpaper is subjected to a grinding process. trouble result from the conventional grinding devices whenever curved surfaces have to be ground, since this involves handling a grinding device difficult because of the fact that only one selective placement of the planed sandpaper on the curved surface is given.

Aufgabe der Erfindung ist es, eine Schleifvorrichtung zu schaffen, mit der unterschiedliche gekrümmte Oberflächen bei einfacher Handhabung schleifbar sind.The object of the invention is to provide a grinding device create with the different curved surfaces are easy to grind.

Für eine Schleifvorrichtung der eingangs genannten Art wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst.For a grinding device of the type mentioned This task by the characteristics of the Claim 1 solved.

Bevorzugte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche. Preferred embodiments of the invention are the subject of subclaims.

Bei der erfindungsgemäßen Schleifvorrichtung wird durch das Merkmal, daß die Auflagefläche gebogen ausgebildet ist und eine gekrümmte Ober- und Unterseite aufweist, die Auflagefläche an dem Kopf über ein elastisches Element befestigt ist, und mindestens zwei Führungseinrichtungen vorgesehen sind, die bewirken, daß die Auflagefläche von dem Kopf reziprozierend entlang einer gebogenen Oberfläche mit gleichem Krümmungsradius wie die Auflagefläche geführt ist, erreicht, daß eine Schleifvorrichtung geschaffen ist, bei der die Schwingbewegung der Oberfläche ihrer Auflagefläche aufgrund des Umstandes, daß die Unterseite ihrer Auflagefläche einen gleichen Krümmungsradius wie die Oberfläche der Auflagefläche aufweist und die Unterseite der Auflagefläche von mindestens zwei bezüglich der Auflagefläche ortsfest angeordneten Führungseinrichtungen so geführt ist, daß eine zur Achse der in der Trägereinrichtung gelagerten Welle laterale Schwingbewegung verhindert ist und die Unterseite der Auflagefläche bei einer Lateralbewegung der Welle mit zeitlich unterschiedlich starkem Druck gegen die jeweiligen Führungseinrichtungen geführt ist, in Verbindung mit einem elastischen Element, das an dem Kopf der Welle vorgesehen ist und über das die Auflagefläche und die Welle miteinander verbunden sind, entlang einer imaginären gebogenen Oberfläche gezwungen ist, die den gleichen Krümmungsradius wie die Oberseite der Auflagefläche aufweist.
Das mit der Schleifpapier-Auflagenvorrichtung zu verwendende Schleifpapier ist vorzugsweise auswechselbar auf der Auflagefläche aufbringbar, wozu es entweder als Klebeschleifpapier ausgebildet ist oder mit integrierten Ösen versehen ist, die mit Haken zusammenwirken, die an der Auflagefläche oder an einer anderen Stelle der erfindungsgemäßen Vorrichtung vorgesehen sind. Zur Befestigung an einer sphärisch ausgebildeten Auflagefläche ist es vorgesehen, daß das Schleifpapier nicht als geschlossene Fläche sondern rosettenartig ausgebildet ist um sicherzustellen, daß im Papier keine Faltenbildung auftritt.
In the grinding device according to the invention, the feature that the bearing surface is curved and has a curved top and bottom, the bearing surface is fastened to the head via an elastic element, and at least two guide devices are provided which cause the bearing surface of the head reciprocally along a curved surface with the same radius of curvature as the support surface, achieved that a grinding device is created in which the oscillating movement of the surface of its support surface due to the fact that the underside of its support surface has the same radius of curvature as the surface of the support surface and the underside of the support surface is guided by at least two guide devices which are arranged so as to be stationary with respect to the support surface in such a way that a lateral oscillating movement to the axis of the shaft mounted in the support device is prevented and the underside of the support surface is guided against the respective guide devices during a lateral movement of the shaft with pressure of different strengths in time, in conjunction with an elastic element which is provided on the head of the shaft and via which the support surface and the shaft are connected to one another, along a imaginary curved surface is forced, which has the same radius of curvature as the top of the support surface.
The sandpaper to be used with the sandpaper support device can preferably be applied interchangeably to the support surface, for which purpose it is either designed as adhesive sandpaper or is provided with integrated eyelets which interact with hooks which are provided on the support surface or at another location of the device according to the invention , For attachment to a spherical support surface, it is provided that the sandpaper is not rosette-like but to ensure that no wrinkling occurs in the paper.

Gemäß einer bevorzugten Ausführungsform der erfindungsgemäßen Schleifvorrichtung sind die Führungseinrichtungen an der Unterseite der Auflagefläche vorgesehen. Auf diese Weise wird die durch die Führungseinrichtungen gewünschte Führungswirkung der Auflagefläche einfach und effektiv erreicht. Wesentlich ist dabei, daß die Führungseinrichtungen auf eine Fläche wirken, deren Krümmungsradius derjenigen der Oberfläche der Auflagefläche entspricht. Insofern sind prinzipiell auch Ausgestaltungen der erfindungsgemäßen Schleifvorrichtungen denkbar, bei denen die Führungseinrichtungen an Führungsflächen mit entsprechend vorgesehenem Krümmungsradius angrenzen, die räumlich von der Unterseite der Auflagefläche getrennt sind, gleichwohl mit der Auflagefläche mechanisch verbunden sind.According to a preferred embodiment of the grinding device according to the invention are the Guide devices on the underside of the contact surface intended. In this way, the Management facilities desired leadership effect of Contact surface reached easily and effectively. Is essential doing that the guiding devices on one surface act, the radius of curvature of that of the surface of the Contact surface corresponds. In principle, too Refinements of the grinding devices according to the invention conceivable, at which the management facilities Guide surfaces with correspondingly provided Adjacent radius of curvature spatially from the bottom of the contact surface are separated, nevertheless with the Contact surface are mechanically connected.

Die Führungseinrichtungen der erfindungsgemäßen Schleifvorrichtung sind vorzugsweise als Kugel-, Wälz- oder Gleitlager ausgebildet. Dadurch ist sichergestellt, daß die gewünschte Führungswirkung der Führungseinrichtungen auf die Unterseite der Auflagefläche reibungsarm und unter geringem Materialverschleiß durchführbar ist. Alternativ können die Führungseinrichtungen als gebogene Führungsflächen ausgebildet sein, die aus einem harten, gleitfähigen Material, insbesondere Kunststoffmaterial hergestellt sind und eine an die Unterseite der Auflagefläche angepaßte Krümmung aufweisen. Die erwünschte Führungswirkung der Führungseinrichtungen auf die Unterseite der Auflagefläche wird dabei auf besonders kostengünstige Weise erreicht.The guide devices of the invention Grinding device are preferably as ball, rolling or Plain bearings trained. This ensures that the desired leadership effect of the management institutions the underside of the contact surface with little friction and under low material wear is feasible. alternative can the guidance devices as curved Guide surfaces are formed, which consist of a hard, lubricious material, especially plastic material are made and one to the bottom of the Support surface have adapted curvature. The desired one Leadership effect of the management institutions on the Bottom of the contact surface is particularly special achieved inexpensive way.

Gemäß weiterer bevorzugter Ausführungsformen der erfindungsgemäßen Schleifvorrichtung können drei, vier oder mehr Führungseinrichtungen vorgesehen sein. Bei einem Vorsehen von mindestens drei Führungseinrichtungen wird eine besonders robuste und genaue Führung der Auflagefläche erreicht.According to further preferred embodiments of the Grinding device according to the invention can three, four or more guidance facilities will be provided. At a Provision of at least three management facilities a particularly robust and precise guidance of the contact surface reached.

Das elastische Element, über das die Auflagefläche mit der in der Trägereinrichtung gelagerten Welle verbunden ist, ist vorzugsweise als Feder, insbesondere Spiralfeder, ausgebildet. Dadurch wird erreicht, daß der durch die Wirkung der Führungseinrichtungen verursachte Hub der Auflagefläche bezüglich des Kopfes der Welle jeweils bei einer vorherbestimmbaren, konstanten Kraft ausgeglichen wird, unabhängig von der jeweiligen Auslenkung der Auflagefläche. Alternativ kann das elastische Element als Scheibe oder als Ring aus einem elastischen Material, insbesondere Gummi, ausgebildet sein. Wesentlich ist hierbei lediglich, daß die durch die Führungseinrichtungen zwischen dem Kopf der Welle und dem Auflagefläche aufgrund der Krümmung der Unterseite der Auflagefläche bewirkte HubBewegung möglichst verzögerungsarm und gleichmäßig ausgeglichen wird.The elastic element over which the contact surface with the shaft connected in the carrier device is connected, is preferably a spring, in particular a spiral spring, educated. This ensures that the Effect of the guide devices caused the stroke Contact surface with respect to the head of the shaft a predetermined, constant force balanced regardless of the respective deflection of the Supporting surface. Alternatively, the elastic element as Disc or as a ring made of an elastic material, especially rubber. Is essential here only that by the management between the head of the shaft and the bearing surface stroke movement caused by the curvature of the underside of the support surface as slow as possible and evenly is balanced.

Die Auflagefläche der erfindungsgemäßen Schleifvorrichtung kann je nach Ausführungsform unterschiedliche Krümmungsradien für unterschiedliche zu schleifende Gegenstände aufweisen. Die Auflagefläche kann beispielsweise zum Schleifen konvexer Oberflächen zylindrisch mit konkaver Oberseite ausgebildet sein, oder sie kann zum Schleifen konkaver Oberflächen zylindrisch mit konvexer Oberseite ausgebildet sein. Zum Schleifen konvexsphärischer Gegenstände kann die Auflagefläche sphärisch mit konkaver Oberseite ausgebildet sein, und zum Schleifen konkav-sphärischer Oberflächen kann die Auflagefläche sphärisch mit konvexer Oberseite ausgebildet sein.The bearing surface of the grinding device according to the invention can vary depending on the embodiment Radii of curvature for different ones to be ground Have items. The contact surface can for example for grinding convex surfaces be cylindrical with a concave top, or it can be used for grinding concave surfaces be formed convex top. For grinding more convex spheres Objects can make the support surface spherical be designed with a concave top, and for grinding The contact surface can be made of concave-spherical surfaces be spherical with a convex top.

In dem Fall, daß die Auflagefläche zylindrisch ausgebildet ist, sind die Führungseinrichtungen vorzugsweise achsparallel zueinander angeordnet. In dem Fall, daß die Auflagefläche sphärisch ausgebildet ist, sind vorzugsweise vier Führungseinrichtungen vorgesehen, die paarweise rechtwinklig zueinander angeordnet sind. Die Auflagefläche kann auch so ausgebildet sein, daß sie in zwei oder mehr Ebenen mindestens zwei unterschiedliche Krümmungen aufweist. In the event that the bearing surface is cylindrical the guide devices are preferred arranged axially parallel to each other. In the event that the Contact surface is spherical, are preferred four guidance devices are provided, in pairs are arranged at right angles to each other. The contact surface can also be designed to be in two or more Planes at least two different curvatures having.

Die Auflagefläche der erfindungsgemäßen Schleifvorrichtung ist vorzugsweise aus einem harten Material, insbesondere Metall oder einem harten Kunststoffmaterial, hergestellt. Für besondere Anwendungsfälle, in denen ein besonders behutsames Schleifen notwendig ist, kann die aus einem harten Material gebildete Auflagefläche auf einer Schaumstoffschicht weich dämpfend gelagert sein oder es kann eine Schaumstoffschicht auf der Auflagefläche vorgesehen sein, oder die Auflagefläche kann auch selbst aus einem weichen Material wie Holz oder Schaumstoff hergestellt sein.The bearing surface of the grinding device according to the invention is preferably made of a hard material, in particular Metal or a hard plastic material. For special applications where a special careful sanding is necessary, the can from one hard material formed on a contact surface Foam layer can be soft cushioned or it can have a foam layer on the support surface can be provided, or the support surface itself made of a soft material such as wood or foam be made.

Die erfindungsgemäße Vorrichtung kann eine zusätzliche Exzentereinrichtung aufweisen, mittels derer die Bewegung der Auflagefläche weiter vorgebbar steuerbar ist. Die zusätzliche Exzentereinrichtung kann dabei mit Hilfe von Fliehkräften und/oder Reibungskräften steuerbar sein. Durch die zusätzliche Exzentereinrichtung ist die erfindungsgemäße Vorrichtung vorteilhafterweise so ausführbar, daß die Auflagefläche eine ungleichförmige Bewegung ausführt, die eine sehr feine Schleifstruktur zur Folge hat.The device according to the invention can be an additional one Have eccentric means by means of which the movement the contact surface is controllable. The additional eccentric device can with the help of Centrifugal and / or frictional forces can be controlled. By the additional eccentric device is the device according to the invention advantageously so executable that the bearing surface is a non-uniform Movement that has a very fine grinding structure Consequence.

Gemäß weiterer bevorzugter Ausführungsformen der erfindungsgemäßen Vorrichtung kann vorgesehen sein, daß die exzentrisch gelagerte Trägereinrichtung, die darin gelagerte Welle oder der an deren einem Ende vorgesehener Kopf in einem Langloch gelagert ist, das aus einer Rotationsbewegung des betreffenden Bauteils eine eindimensional lineare Schwingbewegung erzeugt. Dadurch wird erreicht, daß das Schwingungsverhalten der Auflagefläche der erfindungsgemäßen Vorrichtung in vorherbestimmter Weise eingeschränkt ist, was zu einer einfacheren Handhabung führt und für bestimmte Schleif-Applikationen vorteilhaft ist, insbesondere dann, wenn die zu schleifende Fläche an einer Seite durch obstruierende Gegenstände begrenzt ist. Das Langloch kann dabei vertikal angeordnet sein, so daß es eine horizontal verlaufende Schwingbewegung erzeugt, oder es kann horizontal angeordnet sein, so daß es eine vertikal verlaufende Schwingbewegung erzeugt.According to further preferred embodiments of the The device according to the invention can be provided that the eccentrically mounted carrier device, the therein mounted shaft or the one provided at one end Head is stored in an elongated hole that consists of a Rotational movement of the component in question one-dimensional linear oscillating movement generated. Thereby is achieved that the vibration behavior of the Contact surface of the device according to the invention in is predetermined, resulting in a easier handling leads and for certain grinding applications is advantageous, especially if the Surface to be sanded on one side by obstructing Items is limited. The slot can be vertical be arranged so that it is a horizontal Oscillating motion generated, or it can be arranged horizontally be so that there is a vertical swinging motion generated.

Die erfindungsgemäße Schleifvorrichtung wird im folgenden anhand bevorzugter Ausführungsformen erläutert, die in den Figuren der Zeichnung dargestellt sind. Darin zeigen:

Fig.1
eine bevorzugte Ausführungsform der erfindungsgemäßen Schleifvorrichtung in einer Querschnittsansicht;
Fig.2
eine zylindrisch geformte Auflagefläche der in Fig. 1 dargestellten Schleifvorrichtung in einer Ansicht von hinten;
Fig.3
eine sphärisch ausgestaltete Auflagefläche der erfindungsgemäßen Schleifvorrichtung in einer Ansicht von hinten.
Fig.4
eine weitere bevorzugte Ausführungsform der erfindungsgemäßen Schleifvorrichtung in einer Querschnittsansicht;
Fig.5
die Auflagefläche und der Kopf der in Fig. 4 dargestellten Schleifvorrichtung in einer Ansicht von hinten;
The grinding device according to the invention is explained below with reference to preferred embodiments, which are shown in the figures of the drawing. In it show:
Fig.1
a preferred embodiment of the grinding device according to the invention in a cross-sectional view;
Fig.2
a cylindrically shaped bearing surface of the grinding device shown in Figure 1 in a view from behind.
Figure 3
a spherical support surface of the grinding device according to the invention in a view from behind.
Figure 4
a further preferred embodiment of the grinding device according to the invention in a cross-sectional view;
Figure 5
the support surface and the head of the grinding device shown in Figure 4 in a view from the rear.

Bei der in Figur 1 dargestellten Schleifvorrichtung 10 ist eine Auflagefläche 11 mit einer Unterseite 11' und einer Oberseite 11'' in ihrem Zentralbereich mit einem zylindertopfartigen Vorsprung 12 mit einer Basisfläche 13 mit einer Aussparung 13' versehen, durch die eine Welle 16 mit einem Kopf 15 geführt ist, wobei der Kopf 15 einen Durchmesser aufweist, der größer bemessen ist als der Durchmesser der Welle 16 und der Aussparung 13' und mit seiner Rückseite 15' gegen einen Gummiring 14 angrenzt, der gegen die Basisfläche 13 des Vorsprungs 12 abgestützt ist. Die Welle 16 ist in einer Lagereinrichtung 17 drehbar gelagert, die dezentriert in einer Korpuseinrichtung 18 drehbar gelagert ist. Die Korpuseinrichtung 18 ist über eine Welle 19 getrieben, die in einem Lager 20 gelagert ist und von einer nicht dargestellten Rotoreinrichtung angetrieben ist.In the grinding device 10 shown in Figure 1 a support surface 11 with an underside 11 'and Top 11 '' in its central area with a projection 12 with a base surface 13 provided with a recess 13 'through which a shaft 16 is guided with a head 15, the head 15 a Has diameter that is larger than that Diameter of the shaft 16 and the recess 13 'and with its back 15 'adjacent to a rubber ring 14, the is supported against the base surface 13 of the projection 12. The shaft 16 is rotatable in a bearing device 17 stored, which is decentred in a body device 18 is rotatably mounted. The body device 18 is over driven a shaft 19 which is mounted in a bearing 20 and from a rotor device, not shown is driven.

An die Unterseite 11' der Auflagefläche 11 angrenzend sind als Wälzlager 21, 21' ausgebildete Führungseinrichtungen vorgesehen, durch die die Bewegungsform der Auflagefläche 11 bei eingeschalteter Rotoreinrichtung und sich drehender Welle 19 vorgegeben ist. Bei Abwesenheit der Wälzlager 21, 21' würde eine Rotation der Welle 19 eine Lateralbewegung der Welle 16 und somit über den Kopf 15 auch der Auflagefläche 11 reziprozierend rechtwinklig zur Längsachse 19' der Welle 19 bewirken. Durch die Wälzlager 21, 21' wird diese Lateralbewegung durch die Formgebung der Unterseite 11' der Auflagefläche 11 in eine Bewegung entlang einer gebogenen Oberfläche mit gleichem Krümmungsradius wie die Auflagefläche 11 umgewandelt. Dadurch entsteht ein Hub des Kopfes 15 bezüglich der Basisfläche 13 des Vorsprungs 12, der elastisch durch die Gummischeibe 14 abgefedert wird.Are adjacent to the underside 11 'of the support surface 11 guide devices designed as roller bearings 21, 21 ' provided by the shape of the movement of the support surface 11 with the rotor device switched on and rotating Wave 19 is specified. In the absence of the rolling bearings 21, 21 'a rotation of the shaft 19 would be a lateral movement the shaft 16 and thus the head 15 also the Support surface 11 reciprocally perpendicular to the longitudinal axis 19 'cause the shaft 19. Through the roller bearings 21, 21 ' this lateral movement due to the shape of the underside 11 'of the support surface 11 in a movement along a curved surface with the same radius of curvature as that Contact surface 11 converted. This creates a stroke of the Head 15 with respect to the base surface 13 of the projection 12, which is elastically cushioned by the rubber washer 14.

Bei der in Figur 2 dargestellten Auflagefläche 11 sind die an die konvex geformte Unterseite 11' der Auflagefläche 11 angrenzenden Wälzlager 21, 21', 21'' und 21''' mit Hilfe von Federn 22 und 23 so gelagert, daß Schwingungen, deren Richtung senkrecht zu den in Figur 1 dargestellten Doppelpfeilen, gleichwohl aber senkrecht zur Achse 19' der Welle 19 verläuft, bei Betrieb der erfindungsgemäßen Schleifvorrichtung aufgefangen werden. Die Auflagefläche 11 hat daher bei Betrieb der erfindungsgemäßen Schleifvorrichtung zwei Freiheitsgrade, wobei der eine eine reziprozierende Bewegung entlang der Längsachse 111 der Auflagefläche 11 erlaubt, und der andere eine reziprozierende Bewegung entlang einer gebogenen Oberfläche mit gleichem Krümmungsradius wie die Auflagefläche 11 erlaubt.In the contact surface 11 shown in FIG to the convex underside 11 'of the contact surface 11 adjacent bearings 21, 21 ', 21' 'and 21' '' with the help of springs 22 and 23 mounted so that vibrations, the Direction perpendicular to that shown in Figure 1 Double arrows, but nevertheless perpendicular to the axis 19 'of Wave 19 runs when operating the invention Grinding device to be caught. The contact surface 11 has therefore in operation of the invention Grinding device two degrees of freedom, one of which reciprocal movement along the longitudinal axis 111 of the Support surface 11 allowed, and the other one reciprocal movement along a curved surface with the same radius of curvature as the contact surface 11 allowed.

Bei der in Figur 3 dargestellten sphärisch ausgebildeten Auflagefläche 11 sind an die Unterseite 11' derselben angrenzend Wälzlager 21, 21', 21'' und 21''' angeordnet, wobei die Wälzlager 21 und 21' sowie 21'' und 21''' paarweise achsparallel angeordnet sind. Ähnlich wie die in Figur 2 dargestellten Wälzlager sind die in Figur 3 dargestellten Wälzlager 21, 21', 21'' und 21''' in Federn 22, 23 reziprozierbar gelagert. Dadurch ist eine kreisförmige Bewegung der sphärischen Auflagefläche 11 bei Betrieb der erfindungsgemäßen Schleifvorrichtung ermöglicht. In the spherical embodiment shown in Figure 3 Support surface 11 are on the underside 11 'of the same adjacent roller bearings 21, 21 ', 21' 'and 21' '' arranged, the roller bearings 21 and 21 'and 21' 'and 21' '' are arranged in pairs axially parallel. Similar to that in Rolling bearings shown in FIG. 2 are those in FIG. 3 Rolling bearings 21, 21 ', 21' 'and 21' '' shown in springs 22, 23 mounted reciprocally. This is one circular movement of the spherical bearing surface 11 Operation of the grinding device according to the invention allows.

Bei der in den Figuren 3 und 4 dargestellten Ausführungsform einer erfindungsgemäßen Vorrichtung 10, von der in Fig. 4 einer Querschnittsansicht und in Fig.5 die Auflagefläche 11 und der Kopf 25 in einer Ansicht von hinten dargestellt sind, ist die Welle 23 des Kopfes 25 in einem vertikal verlaufenden Langloch 29 gelagert, das in einem Bauteil 27 ausgebildet ist und das aus einer Rotationsbewegung des betreffenden Bauteils eine lineare, horizontal verlaufende Schwingbewegung des Kopfes 25 erzeugt. Die Führungseinrichtungen sind bei dieser Ausführungsform als gebogene Führungsflächen 31, 31' aus einem harten, gleitfähigen Kunststoffmaterial ausgebildet und weisen eine an die Unterseite 11' der Auflagefläche angepaßte Krümmung auf. Diese Ausführungsform der erfindungsgemäßen Vorrichtung ist insbesondere für Schleif-Applikationen geeignet, bei denen die zu schleifende Fläche an einer Seite durch obstruierende Gegenstände begrenzt ist.The one shown in FIGS. 3 and 4 Embodiment of a device 10 according to the invention the in Fig. 4 a cross-sectional view and in Fig.5 the Contact surface 11 and the head 25 in a view from are shown at the rear, the shaft 23 of the head 25 is in a vertically extending slot 29 stored in a component 27 is formed from a Rotational movement of the component concerned a linear, horizontal swinging movement of the head 25 generated. The management facilities are with this Embodiment as curved guide surfaces 31, 31 ' a hard, slidable plastic material and have one on the underside 11 'of the support surface adjusted curvature. This embodiment of the The device according to the invention is particularly suitable for grinding applications suitable where the surface to be sanded bounded on one side by obstructing objects is.

Die oben erläuterten Ausführungsbeispiele der Erfindung dienen lediglich dem Zweck eines besseren Verständnisses der durch die Patentansprüche vorgegebenen erfindungsgemäßen Vorrichtung, die als solche nicht auf die Ausführungsbeispiele eingeschränkt ist.The exemplary embodiments of the invention explained above are only for the purpose of better understanding of the given by the claims device according to the invention, which as such is not based on the Embodiments is limited.

Claims (21)

  1. A grinding apparatus with a rotor device driving an eccentrically mounted carrier device in which a shaft is mounted provided at one end with a head to which a supporting face for abrasive paper is fastened, the supporting face being made of hard material and being fastened to the head via an elastic element, characterized in that the supporting face is of curved design and has curved upper and lower sides, and at least two guide devices are provided which cause the supporting face to be guided by the head reciprocatingly along a curved surface with the same radius of curvature as the supporting face, the elastic element allowing for a lift of the head.
  2. An apparatus according to claim 1, characterized in that the guide devices are provided on the lower side of the supporting face.
  3. An apparatus according to either of claims 1 and 2, characterized in that the guide devices are formed as ball-bearings, rolling bearings or slide bearings.
  4. An apparatus according to either of claims 1 and 2, characterized in that the guide devices are formed as curved guide faces made of hard material with sliding ability, in particular plastic material, and have a curvature adapted to the lower side of the supporting face.
  5. An apparatus according to any of the above claims, characterized in that three guide devices are provided.
  6. An apparatus according to any of claims 1 to 5, characterized in that the elastic element is formed as a spring.
  7. An apparatus according to any of claims 1 to 5, characterized in that the elastic element is formed as a disk or ring of elastic material, in particular rubber.
  8. An apparatus according to any of claims 1 to 7, characterized in that the supporting face is formed cylindrically with a convex upper side.
  9. An apparatus according to any of claims 1 to 7, characterized in that the supporting face is formed cylindrically with a concave upper side.
  10. An apparatus according to any of claims 1 to 7, characterized in that the supporting face is formed spherically with a convex upper side.
  11. An apparatus according to any of claims 1 to 7, characterized in that the supporting face is formed spherically with a concave upper side.
  12. An apparatus according to either of claims 8 and 9, characterized in that the guide devices are disposed axis-parallel to each other.
  13. An apparatus according to either of claims 10 and 11, characterized in that four guide devices are provided which are disposed in pairs at right angles to each other.
  14. An apparatus according to any of claims 8 to 13, characterized in that the supporting face is formed so as to have at least two different curvatures in two or more planes.
  15. An apparatus according to any of the above claims, characterized in that the supporting face is made of hard material, in particular metal or hard plastic material.
  16. An apparatus according to any of the above claims, characterized in that the curved upper and lower sides of the supporting face have a radius of curvature dimensioned such that the upper and lower sides have a common summit.
  17. An apparatus according to any of the above claims, characterized in that an additional eccentric device is provided for controlling the motion of the supporting face further in presettable fashion.
  18. An apparatus according to claim 17, characterized in that the additional eccentric device is controllable with the aid of centrifugal forces and/or frictional forces.
  19. An apparatus according to any of the above claims, characterized in that the eccentrically mounted carrier device, the shaft mounted therein or the head provided at one end thereof is mounted in a long hole which turns rotating motion of the particular component into one-dimensional linear oscillating motion.
  20. An apparatus according to claim 19, characterized in that the long hole is disposed vertically and produces horizontally extending oscillating motion.
  21. An apparatus according to claim 19, characterized in that the long hole is disposed horizontally and produces vertically extending oscillating motion.
EP99963137A 1998-07-28 1999-01-16 Sanding device for curved surfaces Expired - Lifetime EP1100652B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19833814 1998-07-28
DE19833814 1998-07-28
PCT/DE1999/000082 WO2000006339A1 (en) 1998-07-28 1999-01-16 Sanding device for curved surfaces

Publications (2)

Publication Number Publication Date
EP1100652A1 EP1100652A1 (en) 2001-05-23
EP1100652B1 true EP1100652B1 (en) 2002-06-05

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EP99963137A Expired - Lifetime EP1100652B1 (en) 1998-07-28 1999-01-16 Sanding device for curved surfaces

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US (1) US6478663B1 (en)
EP (1) EP1100652B1 (en)
JP (1) JP2002521224A (en)
DE (3) DE19848918A1 (en)
WO (1) WO2000006339A1 (en)

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DE10065771A1 (en) * 2000-12-30 2002-07-04 Bosch Gmbh Robert Hand tool
FR2894171B1 (en) * 2005-12-02 2008-02-15 Renault Sas ASSEMBLY FOR THE MANUAL SANDING OF A SIDE OF A VEHICLE BODY PIECE
KR101366811B1 (en) 2012-06-11 2014-02-24 주식회사 알앤비 Specimen polishing machine
RU2015125518A (en) 2012-11-29 2017-01-10 Ой Квх Мирка Аб METHOD AND DEVICE FOR GRINDING SPHERICAL PRODUCTS
WO2014122968A1 (en) * 2013-02-05 2014-08-14 新東工業株式会社 Brush unit, brush polishing device provided with this brush unit, brush polishing system, and brush polishing method
JP5608310B1 (en) * 2014-04-08 2014-10-15 株式会社ミラノ製作所 Polishing machine and polishing machine
CN105328516B (en) * 2015-11-18 2018-03-30 广东工业大学 The dynamic magnetic field of magnetic rheologic flexible polishing pad is from sharp burnishing device and its polishing method
CN106041693A (en) * 2016-06-01 2016-10-26 北京电子科技职业学院 Manual grinding tool
CN111890202B (en) * 2019-06-26 2022-02-01 东莞理工学院 3C product shell polishing mechanism capable of polishing from two sides
CN110370127B (en) * 2019-06-26 2021-01-26 东莞理工学院 3C product shell integrated processing equipment
CN115351663B (en) * 2022-09-20 2023-08-25 河北交通职业技术学院 Polishing device for tunnel two-lining trolley template

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US1700114A (en) * 1925-12-09 1929-01-22 Claude H Thompson Surface-polishing machine
DE4233728A1 (en) * 1992-10-07 1994-04-14 Bosch Gmbh Robert Eccentric disc grinder
DE19544465A1 (en) * 1995-11-29 1997-06-05 Alice Schlattl Surface grinder using abrasive paper, with support and fixture for abrasive paper
DE19524084A1 (en) * 1995-07-01 1997-01-02 Bosch Gmbh Robert Hand grinding machine tool and grinding tool
DE19546310A1 (en) * 1995-12-12 1997-06-19 Troeger Johannes Dr Ing Habil Reduced-vibration linear super-finish grinder
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US6039639A (en) * 1997-02-27 2000-03-21 Robert Bosch Gmbh Motor driven hand tool with improved elastic supporting members connecting an oscillating work tool carrier with the tool housing
JPH11333027A (en) * 1998-05-28 1999-12-07 Bridgestone Sports Co Ltd Golf ball polishing device and polishing method using it and golf ball

Also Published As

Publication number Publication date
EP1100652A1 (en) 2001-05-23
DE29911103U1 (en) 2000-01-05
JP2002521224A (en) 2002-07-16
US6478663B1 (en) 2002-11-12
WO2000006339A1 (en) 2000-02-10
DE59901651D1 (en) 2002-07-11
DE19848918A1 (en) 2000-02-10

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