EP0488143A1 - Method for ceramic wave foot grinding - Google Patents

Method for ceramic wave foot grinding Download PDF

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Publication number
EP0488143A1
EP0488143A1 EP91120146A EP91120146A EP0488143A1 EP 0488143 A1 EP0488143 A1 EP 0488143A1 EP 91120146 A EP91120146 A EP 91120146A EP 91120146 A EP91120146 A EP 91120146A EP 0488143 A1 EP0488143 A1 EP 0488143A1
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EP
European Patent Office
Prior art keywords
grinding
foot
station
articles
counter
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
EP91120146A
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German (de)
French (fr)
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EP0488143B1 (en
Inventor
Ottmar Zeitler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heinrich Zeidler Maschinenfabrik & Cokg GmbH
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Heinrich Zeidler Maschinenfabrik & Cokg GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/008—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding ceramics, pottery, table ware
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • B24B21/22—Accessories for producing a reciprocation of the grinding belt normal to its direction of movement
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts

Definitions

  • the invention relates to a method and an apparatus for grinding the base surfaces of ceramic articles such as plates, bowls and the like with a round, rectangular or oval shape.
  • the device according to the invention is intended for processing, in particular for grinding large ceramic articles such as plates, bowls and the like, which, because of their size, are provided with a counter foot or web, which is formed in addition to their normal foot.
  • This counter foot must be attached with the appropriate article size, otherwise the central area will sag downwards in the event of fire.
  • the articles had been passed by hand over a demolition table, where both the foot and the counter foot were ground flat on a flat surface that was covered with an abrasive. This created sharp-edged surfaces that always caused scratches when using the articles on tables and on the tops of the articles when stacking.
  • the invention is therefore based on the object of providing a method for grinding ceramic articles and a device suitable for carrying out the method, by means of which all foot shapes can be ground.
  • both the foot and the counter foot or web are ground together in one station or, if appropriate, in two successive ones, and the articles and / or the abrasive is eccentric at least during the grinding of the counter foot rotate.
  • the task relates to the device, it is achieved according to the invention by one or more stations with grinding tools for grinding the feet and / or counter feet, workpiece holders which hold the articles on the edge or on the side opposite the foot, at least one tool holder which is in the Station for grinding the counter feet is attached eccentrically to its drive shaft.
  • the arrangement of the grinding device for the counter foot 16 in front of all other grinding stations has the purpose that the grinding residues occurring here in the center are conveyed to the outside by the rotation of the articles and the centrifugal force thus occurring during the subsequent operations.
  • carriers 20 are provided, to which the grinding tools are fastened by means of screw connections.
  • FIGS. 2 and 3 represent the station II , in which a grinding device for the counter foot 16 is provided.
  • the plates rest on workpiece holders 14 , which can be formed from metal or plastic. Either vacuum that is generated via the line 22 of the shaft 24 in the space 26 or via ensures that the plates 12 are firmly seated on the workpiece holders 14 for example a possibly elastic edge 28 which holds the plates.
  • the workpiece holder 14 is arranged here, for example, eccentrically with respect to the axis A of the shaft 24 .
  • the grinding belt 30 rests on the counter foot 16 .
  • the sanding belt 30 advances by a length which is dependent on the length of the counter foot.
  • grinding belt 30 is unwound from one spool 32 and wound onto the spool 34 which interacts with it, both of which are fastened to the carrier 20 .
  • the piston cylinder unit 36 with which the height for the grinding block 38 can be roughly adjusted, is also seated on the carrier 20 .
  • the height and contact pressure fine adjustment for the sanding block 38 is based on the tension spring 40 , which sits at the end of the rod 42 , at the other end of which a vibrator 44 is located as an intermediate member to the sanding block.
  • the vibrations generated by the pneumatic vibrator 44 increase the grinding effect of the grinding belt, the contact pressure of which can also be varied from the adjusting screw.
  • the elastic pad 46 includes the counter foot edges during grinding, whereby the grinding belt creates 30 round transitions.
  • Fig. 3 shows the grinding station II shown in Fig. 2 with the plate 12 rotated by 180 ° , so that the counter foot 16 is shown in cross section.
  • the workpiece holder 14 is mounted on the shaft 24 offset from the axis A. The same effect would result in an eccentric position of the plate on the workpiece holder 14 .
  • Guide rollers 48 are shown on the left and right of the vibrator 44 .
  • the station II shown in FIG. 4 is almost identical in construction to the stations III and IV. This station is set up for grinding the plate foot 17 , for which a grinding belt 30 transported in cycles is also used.
  • an elastic roller 50 is provided for this purpose, which presses the grinding belt 30 against the plate foot 17 and thus simultaneously processes the standing surface and the edges.
  • the length of the roller 50 is based on the diameter difference of the plate base 17, which can be considerable in the case of oval and almost rectangular plates 12 .
  • the entire grinding station with a spring (not shown) is able to adapt to the changed height level.
  • inclining the roller 50 This is done by adjusting the screw 52.
  • the roll 50 is shown tilted to the left here. Likewise, however, the roller can also be inclined to the right if this becomes necessary by changing the direction of rotation of the workpiece holder 14 or by processing other articles with special foot shapes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

In the case of large round, oval or cornered objects, it is necessary for stability reasons during fire to create a further supporting point in the centre of the underside of the article in addition to the normal article foot. For this reason, a wave foot which can have the form of a web is integrally formed. Articles with this base configuration were hitherto ground by hand in a break-off machine. In contrast, the invention provides for the articles to be ground automatically by the articles, shown as oval plates 12, being placed with the corresponding work holders 14 on a rotary table 18 with six stations I, II, III, IV, V and VI. In station II, the wave foot 16 is ground with a grinding belt; and the plate foot 17 is ground in stations III, IV and V. For this purpose, the plates 12 or their work holders rotate eccentrically to the grinding tool at least in station II. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Schleifen der Standflächen keramischer Artikel wie Platten, Schalen und dergleichen mit runder, rechteckiger oder ovaler Form.The invention relates to a method and an apparatus for grinding the base surfaces of ceramic articles such as plates, bowls and the like with a round, rectangular or oval shape.

Die erfindungsgemäße Vorrichtung ist zur Bearbeitung, insbesondere zum Schleifen großer keramischer Artikel wie Platten, Schalen und dergleichen vorgesehen, die wegen ihrer Größe mit einem zusätzlich zu ihrem normalen Fuß ausgebildeten Konterfuß oder auch Steg versehen sind. Dieser Konterfuß muß bei entsprechender Artikelgröße angebracht werden, da ansonsten beim Brand der zentrale Bereich nach unten durchsackt. Nach dem Brand hat man die Artikel bisher von Hand über einen Abrißtisch geführt, wo sowohl Fuß als auch Konterfuß auf einer ebenen Fläche, die mit einem Schleifmittel bedeckt war, plan geschliffen wurde. Dabei sind scharfkantige Flächen entstanden, die stets Kratzspuren beim Gebrauch der Artikel auf Tischen und auf den Oberseiten der Artikel beim Stapeln verursachten.The device according to the invention is intended for processing, in particular for grinding large ceramic articles such as plates, bowls and the like, which, because of their size, are provided with a counter foot or web, which is formed in addition to their normal foot. This counter foot must be attached with the appropriate article size, otherwise the central area will sag downwards in the event of fire. Previously, after the fire, the articles had been passed by hand over a demolition table, where both the foot and the counter foot were ground flat on a flat surface that was covered with an abrasive. This created sharp-edged surfaces that always caused scratches when using the articles on tables and on the tops of the articles when stacking.

Aus der DE-AS 11 03 801 ist eine Maschine bekannt, bei der die Füße der Teller oder ähnlicher runder Gegenstände mit entsprechenden Schleifbacken, besetzt mit Diamant- oder Korundleisten, abgerundet werden können. Dazu sind rund um eine Drehtischhohlwelle zahlreiche Zentrier- und Haltevorrichtungen auf einer Drehtischplatte angeordnet. In diese Haltevorrichtung, die über Laufrollen und ein Kurbelstück gesteuert werden, sind Teller mit ihrem Fuß nach oben weisend eingelegt. Über dem dargestellten Teller hängt an einem Ausleger der Schleifmotor. Über eine Muffe ist an dessen Welle ein aus drei Winkelhebeln bestehendes Schleifwerkzeug mit den erwähnten Schleifbacken angebracht. Durch Absenken des Auslegers und bei laufendem Antrieb legen sich die gespreizten Schleifbacken an die Außenseite des Tellerfußes. Je weiter sich der Ausleger absenkt, desto stärker neigen sich die Schleifbacken, wodurch der Fuß von außen nach innen rundgeschliffen wird. Durch diese drei dargestellten Schleifbacken können zwar kreisförmige Tellerfüße geschliffen werden, Konterfüße bzw. Stege und die Füße von nicht kreisförmigen keramischen Artikeln lassen sich damit jedoch nicht schleifen.From DE-AS 11 03 801 a machine is known in which the feet of the plates or similar round objects can be rounded off with corresponding grinding jaws, studded with diamond or corundum strips. For this purpose, numerous centering and holding devices are arranged on a turntable plate around a turntable hollow shaft. In this holding device, which are controlled by rollers and a crank piece, plates are inserted with their feet pointing upwards. The grinding motor hangs on a bracket above the plate shown. A grinding tool consisting of three angle levers with the grinding jaws mentioned is attached to its shaft via a sleeve. By lowering the boom and with the drive running, the spread grinding jaws lie on the outside of the base of the plate. The further the boom descends, the more the grinding jaws tilt, causing the foot to be ground from outside to inside. With these three illustrated grinding jaws, circular plate feet can be ground, but counter feet or webs and the feet of non-circular ceramic articles cannot be ground with it.

Der Erfindung liegt demnach die Aufgabe zugrunde, ein Verfahren zum Schleifen keramischer Artikel und eine zum Durchführen des Verfahrens geeignete Vorrichtung zu schaffen, mit denen sämtliche Fußformen geschliffen werden können.The invention is therefore based on the object of providing a method for grinding ceramic articles and a device suitable for carrying out the method, by means of which all foot shapes can be ground.

Die Aufgabe ist, soweit sie das Verfahren betrifft, erfindungsgemäß dadurch gelöst, daß sowohl Fuß wie auch Konterfuß bzw. Steg in einer Station gemeinsam oder gegebenenfalls in zwei aufeinanderfolgenden getrennt geschliffen werden und die Artikel und/oder das Schleifmittel mindestens während des Schleifens des Konterfußes exzentrisch rotieren.As far as the method is concerned, the object is achieved according to the invention in that both the foot and the counter foot or web are ground together in one station or, if appropriate, in two successive ones, and the articles and / or the abrasive is eccentric at least during the grinding of the counter foot rotate.

Soweit die Aufgabe die Vorrichtung betrifft, ist sie erfindungsgemäß gelöst durch eine oder mehrere Stationen mit Schleifwerkzeugen zum Schleifen der Füße und/oder Konterfüße, Werkstückhalter, die die Artikel am Rand oder an der dem Fuß gegenüberliegenden Seite halten, mindestens einen Werkzeughalter, der in der Station zum Schleifen der Konterfüße exzentrisch an seiner Antriebswelle befestigt ist.As far as the task relates to the device, it is achieved according to the invention by one or more stations with grinding tools for grinding the feet and / or counter feet, workpiece holders which hold the articles on the edge or on the side opposite the foot, at least one tool holder which is in the Station for grinding the counter feet is attached eccentrically to its drive shaft.

Eine vorteilhafte Weiterbildung der erfindungsgemäßen Vorrichtung ergibt sich aus dem Anspruch 3. Nachstehend wird die Erfindung an Hand von Ausführungsbeispielen unter bezug auf Zeichnungen näher erläutert:

Fig. 1
zeigt eine Draufsicht auf die Schleifvorrichtung in Form einer Drehtischausführung
Fig. 2
zeigt eine Teilansicht durch die Schleifstation für den Konterfuß
Fig. 3
zeigt eine Teilansicht der Schleifstation für den Konterfuß 180o versetzt zur Fig. 2
Fig. 4
zeigt eine Teilansicht der Schleifstation für den Artikelfuß
Das in Fig. 1 dargestellte Beispiel betrifft eine Naßschleifmaschine mit Drehtischausführung. Die Anzahl der einzelnen Stationen, die eine Schleifmaschine aufweist, richtet sich nach den gestellten Anforderungen. Im dargestellten Beispiel sind sechs Stationen I, II, III, IV, V, VI vorgesehen. Bei Station I werden die hier als Platten 12 dargestellten Artikel entweder von Hand oder automatisch von einem nicht gezeichneten Greifer oder Sauger auf den Werkzeughalter 14 aufgelegt. Station II ist mit einem Schleifwerkzeug für den Konterfuß 16 ausgestattet. Der Konterfuß 16 ist in allen Darstellungen in Form eines Steges erkenntlich, der sich auf der jeweiligen Längsachse an der Unterseite innerhalb des Fußes der Platte erstreckt. Andere Konterfußformen sind bekannt. In den Stationen III, IV, V erfolgt der Schliff des Plattenfußes 17. Die in den Stationen III, IV, V verwendeten Schleifmittel weisen zumeist unterschiedliche Körnungen auf, wobei in Station V die feinste Körnung verwendet wird. Die letzte Station VI auf dem Drehtisch 18 ist die Abnahmestation. Ebenso wie bei Station I können hier die Platten 12 von nicht dargestellten Greifern entnommen und gegebenenfalls weiteren Vorrichtungen zugeführt werden.An advantageous further development of the device according to the invention results from claim 3. The invention is explained in more detail below on the basis of exemplary embodiments with reference to drawings:
Fig. 1
shows a plan view of the grinding device in the form of a rotary table design
Fig. 2
shows a partial view through the grinding station for the counter foot
Fig. 3
shows a partial view of the grinding station for the counter foot 180 o offset to FIG. 2nd
Fig. 4
shows a partial view of the grinding station for the article foot
The example shown in Fig. 1 relates to a wet grinding machine with a rotary table design. The number of individual stations that a grinding machine has depends on the requirements. In the example shown, six stations I, II, III, IV, V, VI are provided. At station I the items shown here as plates 12 are either by hand or automatically placed on the tool holder 14 by a gripper or suction device not shown. Station II is equipped with a grinding tool for the counter foot 16 . The counter foot 16 can be seen in all representations in the form of a web which extends on the respective longitudinal axis on the underside within the foot of the plate. Other counterfoot shapes are known. In stations III, IV, V , the slab base 17 is ground. The abrasives used in stations III, IV, V mostly have different grain sizes, the finest grain size being used in station V. The last station VI on the turntable 18 is the acceptance station. As with station I , the plates 12 can be removed from grippers (not shown) and, if necessary, fed to further devices.

Der Drehtisch 18, dessen Stationenzahl erhöht werden kann für eventuelle Polier- oder Reinigungsvorgänge, hat auch eine Wanne, in der das zum Schleifen verwendete Wasser und die darin mitgeführten Schleifrückstände gesammelt werden. Die Anordnung der Schleifvorrichtung für den Konterfuß 16 vor allen weiteren Schleifstationen hat den Zweck, daß die hier im Zentrum anfallenden Schleifrückstände durch die Rotation der Artikel und der damit auftretenden Fliehkraft während der nachfolgenden Arbeitsgänge nach außen gefördert werden. In allen, Schleifstationen sind Träger 20 vorgesehen, an die die Schleifwerkzeuge mittels Schraubverbindungen befestigt sind.The turntable 18, the number of stations of which can be increased for any polishing or cleaning operations, also has a trough in which the water used for grinding and the grinding residues carried therein are collected. The arrangement of the grinding device for the counter foot 16 in front of all other grinding stations has the purpose that the grinding residues occurring here in the center are conveyed to the outside by the rotation of the articles and the centrifugal force thus occurring during the subsequent operations. In all grinding stations, carriers 20 are provided, to which the grinding tools are fastened by means of screw connections.

Die Fig. 2 und 3 stellen die Station II dar, in der eine Schleifvorrichtung für den Konterfuß 16 vorgesehen ist. Die Platten liegen auf Werkstückhaltern 14 auf, die aus, Metall oder Kunststoff geformt sein können. Für den festen Sitz der Platten 12 auf den Werkstückhaltern 14 sorgt entweder Vakuum, das über die Leitung 22 der Welle 24 im Raum 26 erzeugt wird, oder über beispielsweise einen möglicherweise elastischen Rand 28, der die Platten hält. Der Werkstückhalter 14 ist hier beispielsweise gegenüber der Achse A der Welle 24 exzentrisch angeordnet.2 and 3 represent the station II , in which a grinding device for the counter foot 16 is provided. The plates rest on workpiece holders 14 , which can be formed from metal or plastic. Either vacuum that is generated via the line 22 of the shaft 24 in the space 26 or via ensures that the plates 12 are firmly seated on the workpiece holders 14 for example a possibly elastic edge 28 which holds the plates. The workpiece holder 14 is arranged here, for example, eccentrically with respect to the axis A of the shaft 24 .

Während des Schleifens liegt das Schleifband 30 auf dem Konterfuß 16 auf. Nach jedem Schleifvorgang rückt das Schleifband 30 um eine Länge, die abhängig Von der Länge des Konterfußes ist, nach. Dazu wird Schleifband 30 von der einen Spule 32 abgewickelt und auf die mit ihr zusammenwirkende Spule 34 aufgewickelt, die beide am Träger 20 befestigt sind. Ebenfalls am Träger 20 sitzt die Kolbenzyllndereinheit 36, mit der die Höhe für den Schleifklotz 38 grob einstellbar ist. Die höhen- und anpreßdruckmäßige Feineinstellung für den Schleifklotz 38 geht von dem Zugfeder 40 aus, die am Ende der Stange 42 sitzt, an derem anderen Ende ein Vibrator 44 als Zwischenglied zum Schleifklotz sitzt. Die vom pneumatischen Vibrator 44 erzeugten Schwingungen verstärken die Schleifwirkung des Schleifbands, deren Anpreßdruck auch von der Einstellschraube aus variiert werden kann. Die elastische Auflage 46 umfaßt beim Schleifen die Konterfußränder, wodurch das Schleifband 30 runde Übergänge schafft.During grinding, the grinding belt 30 rests on the counter foot 16 . After each sanding operation, the sanding belt 30 advances by a length which is dependent on the length of the counter foot. For this purpose, grinding belt 30 is unwound from one spool 32 and wound onto the spool 34 which interacts with it, both of which are fastened to the carrier 20 . The piston cylinder unit 36, with which the height for the grinding block 38 can be roughly adjusted, is also seated on the carrier 20 . The height and contact pressure fine adjustment for the sanding block 38 is based on the tension spring 40 , which sits at the end of the rod 42 , at the other end of which a vibrator 44 is located as an intermediate member to the sanding block. The vibrations generated by the pneumatic vibrator 44 increase the grinding effect of the grinding belt, the contact pressure of which can also be varied from the adjusting screw. The elastic pad 46 includes the counter foot edges during grinding, whereby the grinding belt creates 30 round transitions.

Fig. 3 zeigt die in Fig. 2 dargestellte Schleifstation II mit der um 180 ° gedrehten Platte 12, so daß der Konterfuß 16 im Querschnitt dargestellt ist. Um zu verhindern, daß das Schleifband 30 einen Punkt auf dem Konterfuß 16 hinterläßt, der nahezu unbearbeitet ist und von ungenügender Relativbewegung zwischen Konterfuß und Schleifband herrühren würde, ist der Werkstückhalter 14 versetzt zur Achse A auf der Welle 24 angebracht. Den gleichen Effekt würde eine exzentrische Lage der Platte auf dem Werkstückhalter 14 bewirken. Links und rechts des Vibrators 44 sind jeweils Führungsrollen 48 dargestellt.Fig. 3 shows the grinding station II shown in Fig. 2 with the plate 12 rotated by 180 ° , so that the counter foot 16 is shown in cross section. In order to prevent the sanding belt 30 from leaving a point on the counter foot 16 which is almost unprocessed and would result from insufficient relative movement between the counter foot and the sanding belt, the workpiece holder 14 is mounted on the shaft 24 offset from the axis A. The same effect would result in an eccentric position of the plate on the workpiece holder 14 . Guide rollers 48 are shown on the left and right of the vibrator 44 .

Die in Fig. 4 dargestellte Station II ist nahezu baugleich mit den Stationen III und IV. Diese Station ist zum Schleifen des Plattenfußes 17 eingerichtet, wofür ebenfalls ein taktmäßig transportiertes Schleifband 30 eingesetzt wird.The station II shown in FIG. 4 is almost identical in construction to the stations III and IV. This station is set up for grinding the plate foot 17 , for which a grinding belt 30 transported in cycles is also used.

Auf Grund der zu schleifenden ovalen Fläche ist hierzu eine elastische Rolle 50 vorgesehen, die das Schleifband 30 an den Plattenfuß 17 drückt und somit die Standfläche wie auch die Kanten zugleich bearbeitet. Die Länge der Rolle 50 orientiert sich am Durchmesserunterschied des Plattenfußes 17, der bei ovalen und nahezu rechteckigen Platten 12 erheblich sein kann. Zum Ausgleich von Höhenunterschieden einzelner Platten 12 untereinander ist die gesamte Schleifstation mit einer nicht dargestellten Feder in der Lage, sich an das geänderte Höhenniveau anzugleichen. Um Schleifspuren auf dem Artikelboden innerhalb des Fußes zu vermeiden, neigt man die Rolle 50. Dies geschieht durch das Verstellen der Schraube 52. Die Rolle 50 ist hier nach links geneigt dargestellt. Ebenso kann die Rolle jedoch auch nach rechts geneigt sein, falls dies durch Änderung der Drehrichtung des Werkstückhalters 14 bzw. durch die Bearbeitung anderer Artikel mit besonderen Fußformen notwendig wird.Due to the oval surface to be ground, an elastic roller 50 is provided for this purpose, which presses the grinding belt 30 against the plate foot 17 and thus simultaneously processes the standing surface and the edges. The length of the roller 50 is based on the diameter difference of the plate base 17, which can be considerable in the case of oval and almost rectangular plates 12 . To compensate for height differences between individual plates 12 , the entire grinding station with a spring (not shown) is able to adapt to the changed height level. To prevent abrasion marks on the article bottom inside of the foot, inclining the roller 50. This is done by adjusting the screw 52. The roll 50 is shown tilted to the left here. Likewise, however, the roller can also be inclined to the right if this becomes necessary by changing the direction of rotation of the workpiece holder 14 or by processing other articles with special foot shapes.

Claims (2)

Verfahren zum Schleifen der Standflächen keramischer Artikel wie Platten, Schalen und dergleichen mit runder, rechteckiger oder ovaler Form,
dadurch gekennzeichnet,
daß sowohl Fuß wie auch Konterfuß (16) bzw. Steg in einer Station gemeinsam oder gegebenenfalls in zwei aufeinanderfolgenden getrennt geschliffen werden, wobei die Artikel und/oder das Schleifmittel mindestens wahrend des Schleifens des Konterfußes exzentrisch rotieren.Process for grinding the base surfaces of ceramic articles such as plates, bowls and the like with a round, rectangular or oval shape,
characterized,
that both foot and counter foot (16) or web are ground together in one station or optionally in two successive ones, the articles and / or the abrasive rotating eccentrically at least during the grinding of the counter foot. Vorrichtung zum Schleifen der Standflächen keramischer Artikel wie Platten, Schalen und dergleichen mit runder, rechteckiger oder ovaler Form, mit einer Transportbahn, entlang der mehrere Werkstückhalter angeordnet sind, die einer oder mehreren Arbeitsstationen zugeführt werden,
gekennzeichnet durch - eine oder mehrere Stationen (II, III, IV, V) mit Schleifwerkzeugen zum Schleifen der Füße und/oder Konterfüße (16) - Werkstückhalter, die die Artikel am Rand oder an der dem Fuß gegenüberliegenden Seite halten - mindestens einen Werkstückhalter, der in der Station zum Schleifen der Konterfüße exzentrisch an seiner Antriebswelle 24 befestigt ist. 3. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß das Schleifband (30) in der Station zum Schleifen des Konterfußes (16) mit einem Vibrator (44) verbunden ist.Device for grinding the standing surfaces of ceramic articles such as plates, bowls and the like with a round, rectangular or oval shape, with a transport path along which a plurality of workpiece holders are arranged, which are fed to one or more workstations,
marked by - One or more stations (II, III, IV, V) with grinding tools for grinding the feet and / or counter feet (16) - Workpiece holders that hold the articles on the edge or on the side opposite the foot - At least one workpiece holder, which is attached eccentrically to its drive shaft 24 in the station for grinding the counter feet. 3. Device according to claim 2,
characterized,
that the grinding belt (30) in the station for grinding the counter foot (16) is connected to a vibrator (44).
EP91120146A 1990-11-29 1991-11-26 Method for ceramic wave foot grinding Expired - Lifetime EP0488143B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4038031A DE4038031A1 (en) 1990-11-29 1990-11-29 METHOD AND DEVICE FOR GRINDING THE STANDS OF CERAMIC ARTICLES
DE4038031 1990-11-29

Publications (2)

Publication Number Publication Date
EP0488143A1 true EP0488143A1 (en) 1992-06-03
EP0488143B1 EP0488143B1 (en) 1995-04-12

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EP91120146A Expired - Lifetime EP0488143B1 (en) 1990-11-29 1991-11-26 Method for ceramic wave foot grinding

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0662365A1 (en) * 1994-01-11 1995-07-12 Michael Voit GmbH Method and apparatus for grinding and/or polishing, in particular the bottom of ceramic ware
EP0678358A1 (en) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Machine for grinding the edge of hollow containers
EP2551053A1 (en) * 2011-07-26 2013-01-30 Ghidini Felice Italo E C. S.R.L. Machine for fettling and/or grinding and/or glazing and/or cleaning and/or polishing of workpieces
CN103522155A (en) * 2013-10-28 2014-01-22 江苏大唐机械有限公司 Reed cutter grinding machine
CN109822429A (en) * 2019-04-08 2019-05-31 中国石油大学(华东) It is used to prepare the vibratory finishing machine of metal electron back scattering diffraction sample
CN116604425A (en) * 2023-07-19 2023-08-18 常州埃森诺精密模具有限公司 High-strength solar photovoltaic support connecting piece production device and production process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023896A1 (en) * 2010-06-16 2011-12-22 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Non-rotationally symmetric ceramic article e.g. cup, edge grinding method, involves executing relative movement between grinding head and ceramic article as linear or arc shaped back and forth movement transverse to longitudinal extent
DE102017101115A1 (en) 2017-01-20 2018-07-26 Lippert Gmbh & Co. Kg Grinding device for grinding flat abrasive material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741076A (en) * 1951-02-14 1956-04-10 Shenaugo Pottery Company Ware foot abrading machine
US4939870A (en) * 1989-04-14 1990-07-10 Wang Tien Wang Vertical/horizontal double-way grinding type abrasive belt grinder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103801B (en) * 1953-04-20 1961-03-30 Otto Assmann Machine for grinding and polishing the feet and edges of plates, cups, bowls, etc. like
DD259089A3 (en) * 1985-11-29 1988-08-17 Ve Wissenschaftlich Tech Betri HOLDING DEVICE FOR FINE-CERAMIC PRODUCTS
EP0340281B1 (en) * 1987-10-13 1994-03-23 Extrude Hone Corporation Orbital table for machine tools

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741076A (en) * 1951-02-14 1956-04-10 Shenaugo Pottery Company Ware foot abrading machine
US4939870A (en) * 1989-04-14 1990-07-10 Wang Tien Wang Vertical/horizontal double-way grinding type abrasive belt grinder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 235 (M-415)(1958) 21. September 1985 & JP-A-60 090 668 ( SUWA SEIKOSHA ) 21. Mai 1985 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0662365A1 (en) * 1994-01-11 1995-07-12 Michael Voit GmbH Method and apparatus for grinding and/or polishing, in particular the bottom of ceramic ware
EP0678358A1 (en) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Machine for grinding the edge of hollow containers
EP2551053A1 (en) * 2011-07-26 2013-01-30 Ghidini Felice Italo E C. S.R.L. Machine for fettling and/or grinding and/or glazing and/or cleaning and/or polishing of workpieces
CN103522155A (en) * 2013-10-28 2014-01-22 江苏大唐机械有限公司 Reed cutter grinding machine
CN109822429A (en) * 2019-04-08 2019-05-31 中国石油大学(华东) It is used to prepare the vibratory finishing machine of metal electron back scattering diffraction sample
CN109822429B (en) * 2019-04-08 2020-03-06 中国石油大学(华东) Vibration polishing machine for preparing metal electron back scattering diffraction sample
CN116604425A (en) * 2023-07-19 2023-08-18 常州埃森诺精密模具有限公司 High-strength solar photovoltaic support connecting piece production device and production process
CN116604425B (en) * 2023-07-19 2023-10-13 常州埃森诺精密模具有限公司 High-strength solar photovoltaic support connecting piece production device and production process

Also Published As

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EP0488143B1 (en) 1995-04-12
DE4038031A1 (en) 1992-06-04
DE4038031C2 (en) 1992-11-12
DE59105170D1 (en) 1995-05-18

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