EP2928641B1 - Band finishing apparatus and method for controlling the movement of a finishing band - Google Patents

Band finishing apparatus and method for controlling the movement of a finishing band Download PDF

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Publication number
EP2928641B1
EP2928641B1 EP14706035.4A EP14706035A EP2928641B1 EP 2928641 B1 EP2928641 B1 EP 2928641B1 EP 14706035 A EP14706035 A EP 14706035A EP 2928641 B1 EP2928641 B1 EP 2928641B1
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EP
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Prior art keywords
finishing
band
blocking device
workpiece contact
workpiece
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EP14706035.4A
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German (de)
French (fr)
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EP2928641A1 (en
Inventor
Simon Wolber
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Supfina Grieshaber GmbH and Co KG
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Supfina Grieshaber GmbH and Co KG
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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
    • B24B21/00Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18Accessories
    • B24B21/20Accessories for controlling or adjusting the tracking or the tension of the grinding belt
    • 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
    • B24B21/00Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/02Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • 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
    • B24B35/00Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency

Description

Die Erfindung betrifft eine aus der EP 2 324 955 A1 bekannte Bandfinishvorrichtung mit den Merkmalen des Oberbegriffs des Patentanspruchs 1. Die Erfindung betrifft ferner ein Verfahren zur Bewegungssteuerung mindestens eines Finishbands.The invention relates to a from EP 2 324 955 A1 known Bandfinishvorrichtung with the features of the preamble of claim 1. The invention further relates to a method for controlling the movement of at least one finishing tape.

Aus der WO 2009/049868 A1 ist eine Bandfinishvorrichtung mit einem Finishband bekannt. Bei dieser Bandfinishvorrichtung wird ein Andrückband verwendet, an dessen Vorderseite Verrutschsicherungsmittel vorgesehen sind, die ein Verrutschen des Finishbands gegenüber dem Andrückband bei angedrückter Andrückeinrichtung erschweren sollen. Auf diese Weise soll in einem Bereich, in welchem das Finishband mit dem Werkstück in Kontakt steht und in welchem das Finishband mittels des Andrückbands gegen das Werkstück gedrückt wird, ein Verrutschen des Finishbands relativ zu dem Andrückband verhindert werden.From the WO 2009/049868 A1 For example, a belt finishing device with a finishing belt is known. In this belt finishing device, a pressing belt is used, on the front side of which anti-slip means are provided which are intended to make it difficult for the finishing belt to slip against the pressing belt when the pressing device is pressed. In this way, in a region in which the finishing belt is in contact with the workpiece and in which the finishing belt is pressed against the workpiece by means of the pressure belt, slipping of the finishing belt relative to the pressure belt is to be prevented.

Bei der aus der WO 2009/049868 A1 bekannten Bandfinishvorrichtung ist die Wirksamkeit der Verrutschsicherungsmittel von einer Vielzahl von Parametern abhängig, insbesondere von der Oberflächenbeschaffenheit und und dem Abnutzungszustand des Andrückbands und der Rück- und Vorderseite des Finishbands, von dem Zustand der zu bearbeitenden Werkstückoberfläche, von einem Eingriffswinkel, in welchem das Finishband in Eingriff mit dem Werkstück steht und von dem auf das Andrückband ausgeübten Anpressdruck.At the time of the WO 2009/049868 A1 In the known belt finishing device, the effectiveness of the anti-slip means is dependent on a variety of parameters, in particular the surface finish and wear condition of the press belt and the back and front of the finish belt, the state of the workpiece surface to be machined, and an engagement angle at which the finish belt in FIG Engaging with the workpiece and by the force exerted on the pressure belt contact pressure.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine einfache und zuverlässige Bewegungssteuerung eines Finishbands zu ermöglichen.On this basis, the present invention has the object to enable a simple and reliable motion control of a finishing tape.

Diese Aufgabe wird bei einer Bandfinishvorrichtung der eingangs genannten Art erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved according to the invention in a band finishing device of the type mentioned by the characterizing features of claim 1.

Bei einem Verfahren der eingangs genannten Art wird die vorstehend genannte Aufgabe dadurch gelöst, dass zur wahlweisen Blockierung oder Freigabe einer Bewegung des mindestens einen Finishbands unterschiedliche Wirkflächenabschnitte des mindestens einen Finishbands gegeneinander gedrückt oder relativ zueinander freigegeben werden.In a method of the type mentioned, the above-mentioned object is achieved in that for selectively blocking or releasing a movement of the at least one finishing tape different active surface portions of the at least one finishing tape pressed against each other or released relative to each other.

Erfindungsgemäß wurde erkannt, dass die Wirkfläche eines Finishbands zur Bewegungssteuerung eines Finishbands verwendet werden kann, indem zwei Wirkflächenabschnitte gegeneinander gedrückt oder relativ zueinander freigegeben werden. Bei der Wirkfläche eines Finishbands handelt es sich um die abrasiv wirkende Vorderseite, welche mit Schneidmitteln versehen ist, die bei der finishenden Bearbeitung eines Werkstücks in Eingriff mit der zur finishenden Werkstückoberfläche gebracht werden. Zumindest zwei Abschnitte dieser Wirkfläche werden erfindungsgemäß verwendet, um wahlweise gegeneinander gedrückt zu werden, um eine Blockierung des Finishbands zu erreichen, oder um relativ zueinander freigegeben zu werden, um eine Bewegung des Finishbands zu erlauben.According to the invention, it has been recognized that the effective surface of a finishing belt can be used to control the movement of a finishing belt by pressing two active surface sections against one another or releasing them relative to one another. The effective surface of a finishing strip is the abrasive front side which is provided with cutting means which are brought into engagement with the workpiece surface to be finished during finish machining of a workpiece. At least two portions of this effective area are used according to the invention to be selectively pressed against each other to achieve blocking of the finishing tape or to be released relative to one another to allow movement of the finishing tape.

Im Rahmen der Erfindung ist es möglich, dass zwei Wirkflächenabschnitte desselben Finishbands wahlweise gegeneinander gedrückt oder relativ zueinander freigegeben werden.In the context of the invention, it is possible that two active surface portions of the same finish band are selectively pressed against each other or released relative to each other.

Alternativ hierzu ist es möglich, dass Wirkflächenabschnitte unterschiedlicher Finishbänder gegeneinander gedrückt oder relativ zueinander freigegeben werden, um eine Blockierung oder Freigabe unterschiedlicher Finishbänder zu ermöglichen.Alternatively, it is possible that effective surface portions of different finishing tapes are pressed against each other or released relative to each other to allow blocking or release of different finishing tapes.

Bei einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass das mindestens eine Finishband einen ersten Werkstückkontaktbereich und einen zweiten Werkstückkontaktbereich durchläuft, und dass die Blockiereinrichtung außerhalb der Werkstückkontaktbereiche angeordnet ist. Dies ermöglicht eine von der Geometrie und den örtlichen Bedingungen der Werkstückkontaktbereiche unabhängige Blockierung und Freigabe des mindestens einen Finishbands.In a preferred embodiment of the invention it is provided that the at least one finishing belt passes through a first workpiece contact area and a second workpiece contact area, and that the blocking device is arranged outside the workpiece contact areas. This allows a blockage and release of the at least one finishing strip independent of the geometry and local conditions of the workpiece contact areas.

Es ist möglich, dass die mindestens eine Blockiereinrichtung eingangs des ersten Werkstückkontaktbereichs und ausgangs des zweiten Werkstückkontaktbereichs angeordnet ist. Dies hat den Vorteil, dass einer der Wirkflächenabschnitte, der die Werkstückkontaktbereiche noch nicht durchlaufen hat, noch unbenutzt ist und daher einen besonders hohen Reibungskoeffizienten bereitstellen kann.It is possible for the at least one blocking device to be arranged at the beginning of the first workpiece contact region and the output of the second workpiece contact region. This has the advantage that one of the active surface sections which does not yet have the workpiece contact areas has passed through, is still unused and therefore can provide a particularly high coefficient of friction.

Zusätzlich oder alternativ hierzu ist es möglich, dass die mindestens eine Blockiereinrichtung ausgangs des ersten Werkstückkontaktbereichs und eingangs des zweiten Werkstückkontaktbereichs angeordnet ist. Dies hat den Vorteil, dass die miteinander zusammenwirkenden Wirkflächenabschnitte nach Durchlauf des ersten Werkstückkontaktbereichs denselben Abnutzungszustand aufweisen.Additionally or alternatively, it is possible for the at least one blocking device to be arranged at the output of the first workpiece contact region and at the beginning of the second workpiece contact region. This has the advantage that the interacting effective surface portions after passing through the first workpiece contact area have the same wear condition.

Bevorzugt ist es ferner, wenn eine Umlenkeinheit zur Umlenkung des Finishbands vorgesehen ist und wenn die mindestens eine Blockiereinrichtung zwischen der Umlenkeinheit und den Werkstückkontaktbereichen angeordnet ist. Dies hat den Vorteil, dass die Blockiereinrichtung in einem Vorrichtungsbereich angeordnet werden kann, in welchem einander zugewandte Wirkflächenabschnitte eines Finishbands parallel oder zumindest im Wesentlichen parallel zueinander verlaufen. Um diese Wirkflächenabschnitte miteinander in Eingriff zu bringen, genügt es, zumindest einen der Wirkflächenabschnitte quer zur Finishbandlaufrichtung gesehen in Richtung auf einen gegenüberliegenden Wirkflächenabschnitt zu drücken.It is further preferred if a deflection unit is provided for deflecting the finishing strip and if the at least one blocking device is arranged between the deflection unit and the workpiece contact areas. This has the advantage that the blocking device can be arranged in a device region in which facing active surface portions of a finishing strip parallel or at least substantially parallel to each other. In order to bring these active surface sections into engagement with one another, it is sufficient to press at least one of the active surface sections transversely to the finishing strip running direction in the direction of an opposite active surface section.

Eine besonders einfach aufgebaute Bandfinishvorrichtung ergibt sich, wenn genau ein Finishband vorgesehen ist, welches vorzugsweise mindestens zwei Werkstückkontaktbereiche, insbesondere genau zwei Werkstückkontaktbereiche, durchläuft.A particularly simply constructed belt finishing device results when exactly one finishing belt is provided, which preferably passes through at least two workpiece contact areas, in particular exactly two workpiece contact areas.

Die Blockiereinrichtung umfasst Andrückelemente, welche mit rückseitigen Abschnitten des mindestens einen Finishbands zusammenwirken. Die Andrückelemente sind vorzugsweise quer, insbesondere senkrecht, zur Verlaufsrichtung des Finishbands bewegbar, um das Finishband wahlweise zu blockieren oder freizugeben.The blocking device comprises pressing elements, which interact with rear sections of the at least one finishing tape. The pressing elements are preferably transversely, in particular perpendicular, movable to the running direction of the finishing tape to selectively block or release the finishing tape.

Es ist vorteilhaft, wenn mindestens eines der Andrückelemente als Andrückrolle ausgebildet ist. Dies ermöglicht einen reibungsfreien Andrückkontakt zwischen dem Andrückelement und der Rückseite des Finishbands.It is advantageous if at least one of the pressing elements is designed as a pressure roller. This allows a frictionless Andrückkontakt between the pressure element and the back of the finishing tape.

Bevorzugt ist es ferner, wenn mindestens eines der Andrückelemente einen Führungsabschnitt zur seitlichen Führung des mindestens einen Finishbands aufweist. Auf diese Weise kann im Bereich der Blockiereinrichtung ein seitliches Auswandern des mindestens einen Finishbands verhindert werden.It is further preferred if at least one of the pressing elements has a guide portion for laterally guiding the at least one finishing tape. In this way, lateral migration of the at least one finishing strip can be prevented in the area of the blocking device.

Vorzugsweise ist mindestens eines der Andrückelemente federbeaufschlagt. Auf diese Weise ist es möglich, einen rückseitigen Abschnitt eines Finishbands mit einer Andrückkraft zu beaufschlagen, sodass der dem rückseitigen Abschnitt abgewandte Wirkflächenabschnitt des Finishbands gegen einen weiteren Wirkflächenabschnitt andrückbar ist.Preferably, at least one of the pressing elements is spring-loaded. In this way, it is possible to act on a rear portion of a finishing tape with a pressing force, so that the rear side facing away from the effective surface portion of the finishing tape is pressed against another active surface portion.

Es ist ferner bevorzugt, dass die Bandfinishvorrichtung mindestens eine Andrückeinheit umfasst, welche eine Wirkfläche des Finishbands in einem Werkstückkontaktbereich gegen ein finishend zu bearbeitendes Werkstück drückt und dass die mindestens eine Blockiereinrichtung zumindest mittelbar mit der Andrückeinheit verbunden und gemeinsam mit der Andrückeinheit bewegbar ist. Dies hat den Vorteil, dass die Blockiereinrichtung gemeinsam mit der Andrückeinheit handhabbar ist und die Bewegungssteuerung der Andrückeinheit auch zur Steuerung und Auswahl der Blockierstellung und Freigabestellung der Blockiereinrichtung verwendet werden kann.It is further preferred that the band finishing device comprises at least one pressing unit, which presses a working surface of the finishing strip in a workpiece contact area against a finish to be machined workpiece and that the at least one blocking device is at least indirectly connected to the pressing unit and movable together with the pressing unit. This has the advantage that the blocking device can be handled together with the pressure unit and the motion control of the pressure unit can also be used to control and select the blocking position and release position of the blocking device.

Es ist aber auch möglich, dass die Bandfinishvorrichtung mindestens eine Andrückeinheit umfasst, welche eine Wirkfläche des Finishbands in einem Werkstückkontaktbereich gegen ein finishend zu bearbeitendes Werkstück drückt und dass die mindestens eine Blockiereinrichtung an einem von der Andrückeinheit bewegungsunabhängigen Träger angeordnet ist. Dies ermöglicht eine von der Bewegung der Andrückeinheit unabhängige Steuerung und Auswahl der Blockierstellung und Freigabestellung der Blockiereinrichtung.But it is also possible that the band finishing device comprises at least one pressing unit, which presses an effective surface of the finishing strip in a workpiece contact area against a finish to be machined workpiece and that the at least one blocking device is arranged on a movement independent of the pressing unit carrier. This allows independent of the movement of the Andrückeinheit control and selection of the blocking position and release position of the blocking device.

Im Prinzip ist zur Auswahl der Blockierstellung und Freigabestellung der Blockiereinrichtung eine manuelle Betätigung der Blockiereinrichtung denkbar. Es ist jedoch bevorzugt, dass die mindestens eine Blockiereinrichtung eine Aktoreinheit zur wahlweisen Überführung der Blockiereinrichtung in die Blockierstellung und in die Freigabestellung umfasst. Hierfür kommen insbesondere elektromotorische, pneumatische oder hydraulische Aktoreinheiten in Betracht.In principle, to select the blocking position and release position of the blocking device is a manual operation of the blocking device conceivable. However, it is preferred that the at least one blocking device comprises an actuator unit for selectively transferring the blocking device into the blocking position and into the release position. Electromotive, pneumatic or hydraulic actuator units are particularly suitable for this purpose.

Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung und der zeichnerischen Darstellung eines bevorzugten Ausführungsbeispiels.Further features and advantages of the invention are the subject of the following description and the diagrammatic representation of a preferred embodiment.

In den Zeichnungen zeigen:

  • Fig. 1 eine Seitenansicht einer Ausführungsform einer Bandfinishvorrichtung;
  • Fig. 2 einen Längsschnitt eines Ausschnitts der Bandfinishvorrichtung gemäß Fig. 1;
  • Fig. 3 eine Rückansicht eines Teils einer Blockiereinrichtung entsprechend einer in Fig. 2 mit III bezeichneten Blickrichtung; und
  • Fig. 4 einen Querschnitt eines Teils der Blockiereinrichtung entsprechend einer in Fig. 2 mit IV bezeichneten Blickrichtung.
In the drawings show:
  • Fig. 1 a side view of an embodiment of a belt finishing device;
  • Fig. 2 a longitudinal section of a section of the belt finishing device according to Fig. 1 ;
  • Fig. 3 a rear view of a part of a blocking device according to a in Fig. 2 with III designated viewing direction; and
  • Fig. 4 a cross section of a part of the blocking device according to a in Fig. 2 with IV designated viewing direction.

Eine Ausführungsform einer Bandfinishvorrichtung ist in der Zeichnung insgesamt mit dem Bezugszeichen 10 bezeichnet. Die Bandfinishvorrichtung 10 umfasst ein Finishband 12, welches aus einem Bandfinishvorrat 14 in einen ersten Werkstückkontaktbereich 16 und aus diesem herausgeführt wird. Anschließend wird das Finishband 12 mittels einer Umlenkeinheit 18 umgelenkt und einem zweiten Werkstückkontaktbereich 20 zugeführt, um von dort aus einer Sammeleinrichtung 22 für verbrauchtes Finishband 12 zugeführt zu werden.An embodiment of a belt finishing device is indicated generally by the reference numeral 10 in the drawing. The belt finishing device 10 comprises a finishing belt 12 which is fed out of a belt finish stock 14 into and out of a first work contact area 16. Subsequently, the finishing belt 12 is deflected by means of a deflection unit 18 and a second workpiece contact area 20 is supplied to be fed from there to a collector 22 for used finishing belt 12.

In den Werkstückkontaktbereichen 16 und 20 stehen abrasive Wirkflächen 24 des Finishbands 12 in Kontakt mit einer finishend zu bearbeitenden Werkstückoberfläche 26 eines Werkstücks 28.In the workpiece contact regions 16 and 20, abrasive active surfaces 24 of the finishing strip 12 are in contact with a workpiece surface 26 of a workpiece 28 to be finish-machined.

Während der finishenden Bearbeitung des Werkstücks 28 rotiert das Werkstück 28 um eine Rotationsachse 30. Dieser Rotationsbewegung wird mittels eines an sich bekannten und daher nicht dargestellten Oszillationsantriebs eine oszillierende Bewegung des Werkstücks 28 und/oder des Finishbands 12 in einer zu der Werkstückachse 30 parallelen Richtung überlagert. Hierdurch wird eine für ein Finishverfahren charakteristische Kreuzschliffstruktur der Werkstückoberfläche 26 erzeugt.During the finishing machining of the workpiece 28, the workpiece 28 rotates about a rotation axis 30. This rotational movement is by means of a known per se and therefore not shown oscillation drive an oscillating movement of the workpiece 28th and / or the finishing tape 12 in a direction parallel to the workpiece axis 30 direction superimposed. As a result, a cross-cut structure of the workpiece surface 26 that is characteristic of a finishing process is produced.

Um das Finishband 12 in den Werkstückkontaktbereichen 16 und 20 gegen die Werkstückoberfläche 26 zu drücken, umfasst die Bandfinishvorrichtung 10 Andrückeinheiten 32 und 34. Die Andrückeinheiten 32 und 34 umfassen jeweils einen Andrückarm 36, 38, welcher um zugeordneten Andrückarmschwenkachsen 40, 42 verschwenkbar sind. Die Andrückeinheiten 32 und 34 umfassen ferner mit den Andrückarmen 36, 38 verbundene Finishbandandrückschalen 44, 46.In order to press the finishing belt 12 against the workpiece surface 26 in the workpiece contact regions 16 and 20, the belt finishing device 10 comprises pressing units 32 and 34. The pressing units 32 and 34 each comprise a pressing arm 36, 38, which are pivotable about associated pressing arm pivot axes 40, 42. The pressing units 32 and 34 further comprise finishing band pressing shells 44, 46 connected to the pressing arms 36, 38.

Zum Antrieb der Andrückarme 36, 38 um die Andrückarmschwenkachsen 40, 42 ist ein an sich bekannter und daher nicht dargestellter Antrieb vorgesehen, welcher die Andrückarme 36, 38 mit einer Kraft beaufschlagt, sodass die Finishbandandrückschalen 44, 46 mit ihren schalenförmigen Ausnehmungen 48, 50 gegen die Rückseite des Finishbands 12 drücken und somit die Wirkfläche 24 des Finishbands 12 gegen die Werkstückoberfläche 26 des Werkstücks 28 drücken.To drive the Andrückarme 36, 38 to the Andrückarmschwenkachsen 40, 42 a known and therefore not shown drive is provided, which acts on the Andrückarme 36, 38 with a force, so that the Finishbandandrückschalen 44, 46 with their cup-shaped recesses 48, 50 against Press the back of the finishing tape 12 and thus press the active surface 24 of the finishing tape 12 against the workpiece surface 26 of the workpiece 28.

Die Bandfinishvorrichtung 10 weist zur Bewegungssteuerung des Finishbands 12 eine Blockiereinrichtung 52 auf. Diese ist bei dem in der Zeichnung dargestellten Ausführungsbeispiel in Laufrichtung des Finishbands 12 gesehen ausgangs des ersten Werkstückkontaktbereichs 16 und eingangs des zweiten Werkstückkontaktbereichs 20 angeordnet. Räumlich ist die Blockiereinrichtung 52 zwischen den Werkstückkontaktbereichen 16 und 20 einerseits und der Umlenkeinheit 18 andererseits angeordnet.The belt finishing device 10 has a blocking device 52 for controlling the movement of the finishing belt 12. This is seen in the embodiment shown in the drawing in the direction of the finish belt 12 output of the first workpiece contact portion 16 and the input of the second workpiece contact portion 20 is arranged. Spatially, the blocking device 52 between the workpiece contact areas 16 and 20 on the one hand and the deflecting unit 18 on the other hand arranged.

Die Blockiereinrichtung 52 umfasst zwei relativ zueinander bewegbare Baugruppen 54 und 56. Die erste Baugruppe 54 ist gemeinsam mit dem Andrückarm 36 der Andrückeinheit 32 bewegbar. Die zweite Baugruppe 56 ist gemeinsam mit dem Andrückarm 38 der Andrückeinheit 34 bewegbar.The blocking device 52 comprises two relatively movable assemblies 54 and 56. The first assembly 54 is movable together with the pressing arm 36 of the pressing unit 32. The second assembly 56 is movable together with the pressing arm 38 of the pressing unit 34.

Die Baugruppen 54 und 56 umfassen jeweils ein Andrückelement 58, 60, welches jeweils mit der Rückseite eines Abschnitts des Finishbands 12 zusammenwirkt. Die Andrückelemente 58, 60 sind als Andrückrollen 62, 64 ausgebildet. Diese Rollen weisen rotationssymmetrische Andrückflächen auf, welche sich durchgängig über die gesamte Breite des Finishbands 12 erstrecken können, oder wie in der Zeichnung dargestellt, in Querrichtung des Finishbands 12 gesehen voneinander getrennte Andrückflächenabschnitte 66a, 66b, 66c aufweisen.The assemblies 54 and 56 each include a pressing member 58, 60, which cooperates with the back of a portion of the finishing tape 12, respectively. The pressing elements 58, 60 are as pressure rollers 62, 64 trained. These rollers have rotationally symmetrical pressure surfaces, which can extend continuously over the entire width of the finishing tape 12, or as shown in the drawing, viewed in the transverse direction of the finishing tape 12 have separate Andrückflächenabschnitte 66a, 66b, 66c.

Die Andrückrollen 62, 64 sind um jeweilige Achsen 68, 70 drehbar, deren Lage von Haltern 72, 74 vorgegeben ist. Die Halter 72, 74 sind jeweils quer zu der Verlaufsrichtung des Finishbands 12 verschiebbar innerhalb von Halteraufnahmen 76, 78 geführt.The pressure rollers 62, 64 are rotatable about respective axes 68, 70, the position of which is predetermined by holders 72, 74. The holders 72, 74 are each guided transversely to the running direction of the finishing strip 12 displaceable within holder receivers 76, 78.

Zur Beaufschlagung der Halter 72, 74 und der Andrückelemente 58 und 60 mit einer in Richtung auf die jeweilige Rückseite des Finishbands 12 gerichteten Kraft sind Federn 80, 82 vorgesehen, welche eine Andrückkraft auf die Andrückelemente 58 und 60 ausüben. Auf diese Weise kann mittels der Andrückflächen 66a, 66b, 66c jeweils eine Andrückkraft auf rückseitige Abschnitte 84 des Finishbands 12 ausgeübt werden. Diese Andrückkräfte werden durch den Querschnitt des Finishbands 12 hindurch auf die Wirkfläche 24 des Finishbands 12 übertragen, sodass in einem Kontaktbereich Wirkflächenabschnitte 24a und 24b blockierend miteinander in Eingriff stehen.For acting on the holders 72, 74 and the pressing elements 58 and 60 with a force directed in the direction of the respective rear side of the finishing strip 12, springs 80, 82 are provided, which exert a pressing force on the pressing elements 58 and 60. In this way, by means of the pressing surfaces 66a, 66b, 66c, a respective pressing force can be exerted on rear-side sections 84 of the finishing strip 12. These pressing forces are transmitted through the cross section of the finishing tape 12 on the active surface 24 of the finishing tape 12, so that in a contact region active surface portions 24a and 24b are blockingly engaged with each other.

Eine Freigabe des Finishbands 12 im Bereich der Blockiereinrichtung 52 erfolgt, indem die Andrückarme 36 und 38 der Andrückeinheiten 32 und 34 voneinander wegbewegt werden, sodass der Abstand der Andrückflächenabschnitte 66a, 66b, 66c der Andrückelemente 58 und 60 vergrößert wird.A release of the finishing tape 12 in the region of the blocking device 52 takes place by the pressing arms 36 and 38 of the pressing units 32 and 34 being moved away from each other, so that the distance of the Andrückflächenabschnitte 66 a, 66 b, 66 c of the pressing elements 58 and 60 is increased.

Um ein seitliches Auswandern des Finishbands 12 im Bereich der Blockiereinrichtung 52 zu verhindern, können die Andrückrollen 62, 64 Führungsabschnitte 86, 88 in Form von Ringflanschen aufweisen, welche den Kontaktbereich der Wirkflächenabschnitte 24a und 24b in seitlicher Richtung begrenzen.In order to prevent sideways emigration of the finishing strip 12 in the region of the blocking device 52, the pressure rollers 62, 64 can have guide sections 86, 88 in the form of annular flanges which limit the contact region of the active surface sections 24a and 24b in the lateral direction.

Claims (13)

  1. Band finishing apparatus (10) with at least one finishing band (12), wherein at least one blocking device (52) is provided which in a blocking position prevents a movement of the at least one finishing band (12) and which in a release position permits a movement of the at least one finishing band (12), characterised in that the blocking device (52) comprises pressing elements (58, 60) which interact with rear-side sections (84) of the at least one finishing band (12) and, in the blocking position of the blocking device (52), press together two active surface sections (24a, 24b) of the at least one finishing band (12).
  2. Band finishing apparatus (10) according to claim 1, characterised in that the at least one finishing band (12) runs through a first workpiece contact region (16) and a second workpiece contact region (20), and that the blocking device (52) is arranged outside of the workpiece contact regions (16, 20).
  3. Band finishing apparatus (10) according to claim 2, characterised in that the at least one blocking device (52) is arranged at the beginning of the first workpiece contact region (16) and at the end of the second workpiece contact region (20).
  4. Band finishing apparatus (10) according to claim 2 or 3, characterised in that the at least one blocking device (52) is arranged at the end of the first workpiece contact region (16) and at the beginning of the second workpiece contact region (20).
  5. Band finishing apparatus (10) according to one of the claims 2 to 4, characterised in that a return pulley unit (18) is provided for redirection of the finishing band (12) and that the at least one blocking device (52) is arranged between the return pulley unit (18) and the workpiece contact regions (16, 20).
  6. Band finishing apparatus (10) according to one of the preceding claims, characterised in that exactly one finishing band (12) is provided which preferably runs through at least two workpiece contact regions (16, 20), in particular exactly two workpiece contact regions (16, 20).
  7. Band finishing apparatus (10) according to one of the preceding claims, characterised in that at least one of the pressing elements (58, 60) is designed as a pressure roller (62, 64).
  8. Band finishing apparatus (10) according to one of the preceding claims, characterised in that at least one of the pressing elements (58, 60) has a guide section (86, 88) for lateral guidance of the at least one finishing band (12).
  9. Band finishing apparatus (10) according to one of the preceding claims, characterised in that at least one of the pressing elements (58, 60) is spring-loaded.
  10. Band finishing apparatus (10) according to one of the preceding claims, characterised in that the band finishing apparatus (10) includes at least one pressing unit (32, 34) which, in a workpiece contact region (16, 20), presses an active surface (24) of the finishing band (12) against a workpiece (28) which is to be finished, and that the at least one blocking device (52) is connected, at least indirectly, to the pressing unit (32, 34) and can be moved jointly with the pressing unit (32, 34).
  11. Band finishing apparatus (10) according to one of the preceding claims, characterised in that the band finishing apparatus (10) includes at least one pressing unit (32, 34) which, in a workpiece contact region (16, 20), presses an active surface (24) of the finishing band (12) against a workpiece (28) which is to be finished, and that the at least one blocking device (52) is arranged on a support which is independent of the pressing unit (32, 34) in terms of movement.
  12. Band finishing apparatus (10) according to one of the preceding claims, in particular according to claim 12, characterised in that the at least one blocking device (52) includes an actuator unit for selective switching of the blocking device (52) into the blocking position and into the release position.
  13. Method for controlling the movement of at least one finishing band (12), characterised in that different active surface sections (24a, 24b) of the at least one finishing band (12) are pressed together or released relative to one another for the selective blocking or release of a movement of the at least one finishing band (12).
EP14706035.4A 2014-02-21 2014-02-21 Band finishing apparatus and method for controlling the movement of a finishing band Active EP2928641B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/053456 WO2015124205A1 (en) 2014-02-21 2014-02-21 Band finishing apparatus and method for controlling the movement of a finishing band

Publications (2)

Publication Number Publication Date
EP2928641A1 EP2928641A1 (en) 2015-10-14
EP2928641B1 true EP2928641B1 (en) 2016-02-17

Family

ID=50156770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14706035.4A Active EP2928641B1 (en) 2014-02-21 2014-02-21 Band finishing apparatus and method for controlling the movement of a finishing band

Country Status (2)

Country Link
EP (1) EP2928641B1 (en)
WO (1) WO2015124205A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328006C1 (en) * 1993-08-20 1994-08-04 Thielenhaus Ernst Kg Machine for the two-stage machining of pre-ground shafts, in particular motor vehicle camshafts, by finish grinding
DE4426923A1 (en) * 1994-07-29 1996-02-01 Grieshaber Masch Device for the surface treatment of workpieces
DE102007051047B4 (en) * 2007-10-16 2023-03-23 Nagel Maschinen- Und Werkzeugfabrik Gmbh Press-on device for finishing belt and device and method for finishing peripheral surfaces on cylindrical workpiece sections
EP2147745A1 (en) * 2008-07-25 2010-01-27 Supfina Grieshaber GmbH & Co. KG Superfinishing machine with abrasive belt and method for operating same
FR2952845B1 (en) * 2009-11-24 2011-12-09 Renault Sa TOOLING MACHINE
DE202013005504U1 (en) * 2013-06-12 2013-06-26 Nagel Maschinen- Und Werkzeugfabrik Gmbh Pressing device for finishing belt and device for finishing peripheral surfaces on cylindrical workpiece sections

Also Published As

Publication number Publication date
WO2015124205A1 (en) 2015-08-27
EP2928641A1 (en) 2015-10-14

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