EP2792460B1 - Device and method for machining the edges of a workpiece - Google Patents

Device and method for machining the edges of a workpiece Download PDF

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Publication number
EP2792460B1
EP2792460B1 EP14165110.9A EP14165110A EP2792460B1 EP 2792460 B1 EP2792460 B1 EP 2792460B1 EP 14165110 A EP14165110 A EP 14165110A EP 2792460 B1 EP2792460 B1 EP 2792460B1
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EP
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Prior art keywords
workpiece
machining
edge
edges
machined
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EP14165110.9A
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German (de)
French (fr)
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EP2792460A1 (en
Inventor
Wilhelm Kalmbach
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Homag GmbH
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Homag GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • the present invention relates to a device according to the preamble of claim 1 and a method for edging a workpiece, in particular for edging a workpiece surface using a device according to at least claim 1.
  • the applicant is an apparatus and a method for edge processing a narrow side of the workpiece is known in which the longitudinal edges are processed continuously with a milling unit and the corners with a CNC-controlled Formfräsaggregat having four, two or a tool. Further, the applicant is known an apparatus and a method for edge processing a narrow side of the workpiece, in which the Leksskanten- and corner machining is performed with a CNC-controlled Formfräsaggregat, the Formfräsaggregat has four or two tools.
  • the invention is based on the idea that the machine construction space, the susceptibility to faults and the system costs of the devices and methods of the type mentioned above are determined primarily by the number of system assemblies or components and in particular by the number of processing tools.
  • the known devices and methods have a large machine space and a high system complexity with a correspondingly increased susceptibility to failure and high system costs, especially because they have at least two processing units, each with at least one tool or comprise a CNC-controlled processing unit with at least one tool.
  • a reference device is required for setting a reference position for the positioning positioning of the machining tool of the post-processing unit to a work piece section that is being processed.
  • the post-processing unit and the reference device must be designed so that they can be processed with them two workpiece edges with a different edge overhang to the respective adjacent workpiece surface.
  • the present invention is also suitable to be able to process edges with the same edge overhang, wherein the term edge overhang in the frame this invention also fall flush edges.
  • Such a device according to the invention leads to a smaller machine space and a lower machine complexity with a correspondingly lower susceptibility to interference and lower system costs and lower energy costs.
  • the reference device comprises a measuring device for measuring a workpiece dimension and a control device for controlling a delivery of the first machining tool to a workpiece section being processed, taking into account the measurement of the measuring device.
  • the reference device comprises a feeler, which in the present invention is in particular a sensing roller.
  • a predetermined Zustellposition ist of the first machining tool to the workpiece section located in progress can be achieved with the sensing roller.
  • the feeler means offers the advantage that it allows a relatively inexpensive, but accurate, sostechnikmaschine ein to the work in progress workpiece section.
  • the feeler is adjustable so that the feed position of the machining tool of the post-processing unit is adjustable to the workpiece section being processed.
  • This embodiment makes it possible to adjust the positioning position via the adjustability of the feeler of the machining tool can be changed from one edge to the next edge to the workpiece section being processed. In this way, edges can thus be finished with a different edge overhang to the respective adjacent workpiece surface.
  • the Taststoffver ein preferably via a spindle adjustment and / or a C-axis adjustment and / or an eccentric adjustment and / or Taststofftechnik carefullymesser adjustment and / or a pneumatic cylinder adjustment and / or an electrical linear actuator adjustment.
  • Such a preferred embodiment leads to the advantage that can be processed with only one reference means two edges with a different edge overhang to the respective adjacent workpiece surface. This embodiment This leads to a particularly low machine complexity and is thus particularly cost-effective and low maintenance.
  • the device further comprises a further processing unit with a second processing tool for processing a workpiece edge of the workpiece.
  • this embodiment comprises a pressing device for pressing the workpiece to a reference means.
  • a machining of the edge which bears against the reference means, is possible with a constant vertical tool position. This is due to the fact that the pressing to a certain extent eliminates unevenness at the workpiece edge abutting the reference means and thus leads to a workpiece edge having a constant normal distance to the reference means along the reference means.
  • the further processing unit which can be configured without Taststoff, as with the other processing unit parallel to the post-processing unit, a further workpiece edge can be edited.
  • the travel range of the post-processing unit can be reduced by this preferred embodiment which results in a smaller and less expensive machine structure.
  • the cycle performance of the machine is increased because the feed increases and the workpiece gap is reduced.
  • the processing devices of the preferred embodiments are used to edit edges of an edge band provided with a narrow side of a plate-shaped workpiece, wherein the edge band is glued to the narrow surface with a supernatant or otherwise provided.
  • the edge band has an adhesive or functional layer which unfolds adhesive properties due to energy input (for example heating or laser radiation) and via which the edge band is joined to the workpiece narrow side of the workpiece.
  • the workpieces used consist at least in sections of wood, wood materials, plastic or the like, as used for example in the field of furniture and component industry.
  • Fig. 1 shows a side view of an embodiment of an edge processing device 1 according to the present invention.
  • the edge processing device 1 comprises a conveyor 3, a post-processing unit 4, a reference device 5 and a pressing device.
  • the post-processing unit 4 comprises a milling tool 7, which is driven by a drive, not shown in detail.
  • the milling tool 7 is over a Tool carriage 6 in a direction FV, ie perpendicular to a workpiece feed direction VR, slidably mounted on a support means 8.
  • the support device 8 is fixedly mounted on an axial slide 9, which is movable relative to the conveyor 3 via a guide device in the feed direction VR.
  • the finishing unit 4 is formed in this preferred embodiment as Formfräsaggregat with a sensing roller 10.
  • the follower roller 10 is provided on the carriage 6 so that it defines a feed position of the milling tool 7 to the workpiece section in progress when passing over a workpiece surface.
  • the follower roller 10 of the post-processing unit 4 is designed such that, when used, the milling tool 7 mills the workpiece edge being machined flush with the workpiece surface, as shown in FIG Fig. 4a is shown.
  • the reference device has a measuring device 5 for measuring the workpiece thickness of a workpiece 2, which is arranged upstream of the post-processing unit 4 in the feed direction VR.
  • a measuring device 5 for measuring the workpiece thickness of a workpiece 2, which is arranged upstream of the post-processing unit 4 in the feed direction VR.
  • the present sensor load measuring system comprises a touch roller 11, which is designed so that it follows the surface contour of the workpiece 2, when it is moved in the feed direction VR relative to the sensing roller. In a surface contour change, the sensing roller 11 moves vertically in the direction FV accordingly. Since the workpiece 2 is pressed with the pressing device 6 to the conveyor 3, the vertical movement of the follower roller 11 corresponds to the workpiece thickness change.
  • the processing device 1 further comprises a control device, not shown, to which the measurement data of the Measuring device 5 are transmitted.
  • the control device is set up in such a way that, based on the measurement data, it can control the position of the milling tool 7 of the post-processing unit 4 during edge processing in the vertical direction FV in such a way that a desired milling tool delivery to the workpiece section to be machined can be achieved.
  • the conveyor 3 is configured in the present embodiment as a conveyor chain, although a variety of other configurations are possible.
  • the pressing device has, for example, belts and / or rollers.
  • the workpiece 2 is moved via the conveyor chain 3 in a conveying direction VR and pressed on the conveyor chain 3 during the entire processing process via the pressing device 6.
  • the workpiece passes in a first step, the sensing roller 11 of the measuring device 5.
  • the workpiece thickness of the workpiece 2 in sections or along the entire workpiece edge measured and the measurement data are transmitted to the control device, not shown.
  • a first edge-processing step the axial slide 9 together with the support device 8 and the tool carriage 6 travel with the workpiece 2 in such a way that no relative movement in the feed direction VR between the workpiece 2 and the axial slide 9 occurs.
  • a first workpiece edge K1 see Fig. 3
  • Milled using the sensing roller 10 flush with the workpiece 2 by the milling tool 7 is moved in the vertical direction FV on the tool carriage 6 relative to the support means 8 and the workpiece 2.
  • the axial slide 9 against the Feed direction of the workpiece VR moved and processed a second workpiece edge K2, see Fig. 3 , in such a form that a supernatant d, see Fig.
  • a third step the post-processing unit 4 moves again in the feed direction VR of the workpiece 2, so that in this direction no relative movement between the axial slide 9 and the workpiece 2 is formed.
  • Milled using the sensing roller 10 flush with the surface of the workpiece 2 by the milling tool 7 is moved in the vertical direction FV relative to the support means 8 and the workpiece 2.
  • the post-processing unit 4 is moved faster in the feed direction VR than the workpiece 2, so that a relative movement between the axial slide 9 and the workpiece 2 is formed.
  • a fourth edge K4 see Fig. 3 , the workpiece 2 processed with the milling tool 7.
  • this fourth edge K4 is also processed with a constant projection d, in this case 0.1 mm, of the edge upper edge to the workpiece surface.
  • the second preferred embodiment is based on the first preferred embodiment. In contrast, it has a further processing unit 15 with a second milling tool 16.
  • the fourth workpiece edge K4 is processed with the further processing unit 15 and not with the post-processing unit 4.
  • the further processing unit 15 is connected via a further support means 17 fixed to the guide device, so that it is not movable in the feed direction VR.
  • the processing of the fourth workpiece edge K4 is possible with a constant vertical position of the milling tool and so the milling tool 16 of the further processing unit 15 is not adjusted during edge processing in the vertical direction FV. Instead, the processing of the edge K4 by the workpiece 2 is moved over the conveyor chain 3 relative to the milling tool 16 of the further processing unit 15.
  • this third embodiment has a smaller machine space and more power than the first and second embodiments on.
  • the further processing unit 15 has a feeler, in particular a feeler roller, which allows a predetermined positioning positioning of the second Frästechniksmaschines 16 to the work in progress workpiece section.
  • the workpiece edge machining is done in a clockwise direction.
  • first the edge K1, then the edge K4 and then the edge K3 are processed with the finishing unit 4.
  • the edge K2 is in a subsequent processing step with the second processing tool 16 of the further processing unit 15th edited with the help of the feeler of the other processing unit.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Milling Processes (AREA)

Description

Technisches GebietTechnical area

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 und ein Verfahren zum Kantenbearbeiten eines Werkstücks, insbesondere zum Kantenbearbeiten einer Werkstückoberfläche unter Verwendung einer Vorrichtung nach zumindest Anspruch 1.The present invention relates to a device according to the preamble of claim 1 and a method for edging a workpiece, in particular for edging a workpiece surface using a device according to at least claim 1.

Stand der TechnikState of the art

Der Anmelderin ist eine Vorrichtung und ein Verfahren zum Kantenbearbeiten einer Werkstückschmalseite bekannt, bei dem die Längskanten durchgehend mit einem Fräsaggregat und die Ecken mit einem CNC-gesteuerten Formfräsaggregat, welches vier, zwei oder ein Werkzeug aufweist, bearbeitet werden. Ferner ist der Anmelderin eine Vorrichtung und ein Verfahren zum Kantenbearbeiten einer Werkstückschmalseite bekannt, bei dem die Längskanten- und Eckbearbeitungen mit einem CNC-gesteuerten Formfräsaggregat ausgeführt wird, wobei das Formfräsaggregat vier oder zwei Werkzeuge aufweist.The applicant is an apparatus and a method for edge processing a narrow side of the workpiece is known in which the longitudinal edges are processed continuously with a milling unit and the corners with a CNC-controlled Formfräsaggregat having four, two or a tool. Further, the applicant is known an apparatus and a method for edge processing a narrow side of the workpiece, in which the Längskanten- and corner machining is performed with a CNC-controlled Formfräsaggregat, the Formfräsaggregat has four or two tools.

Allen Vorrichtungen und Verfahren aus dem Stand der Technik ist gemeinsam, dass die Kantenbearbeitungen mit Hilfe von Tastrollen durchgeführt werden, wobei jedes Aggregat bzw. jedes Werkzeug eine Tastrolle aufweist, welche das/die Fräswerkzeug(e) entlang der Werkstückkontur so führt, dass ein konstanter Überstand der Kante zur anliegenden Werkstückoberfläche erzielt wird. Diese aus dem Stand der Technik bekannten Vorrichtungen und Verfahren besitzen den Nachteil, dass sie für die Fertigung von zwei Werkstückkanten an der jeweiligen Werkstückschmalfläche mit verschiedenen Kantenüberständen zur jeweils anliegenden Werkstückoberfläche einen großen Platzbedarf erfordern und eine erhöhte Störanfälligkeit sowie hohe Systemkosten aufweisen. Aus der DE 4408 596 A1 ist eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 zum Rundumbearbeiten von Kanten bekannt, wobei ein Fräsaggregat um eine Achse geschwenkt wird. Zur Einstellung der Beabstandung zwischen Schwenkachse und Werkstückschmalfläche können Sensoren und Steuerorgane vorgesehen sein.Common to all devices and methods of the prior art is that the edge treatments are performed by means of touch rollers, each unit or each tool having a follower roller which guides the milling tool (s) along the workpiece contour such that a constant projection of the edge is achieved to the adjacent workpiece surface. These known from the prior art devices and methods have the disadvantage that they require a large amount of space for the production of two workpiece edges on the respective workpiece surface with different edge projections for each adjacent workpiece surface and have increased susceptibility to failure and high system costs. From the DE 4408 596 A1 a device according to the preamble of claim 1 for all-round edge machining is known, wherein a milling unit is pivoted about an axis. To adjust the spacing between the pivot axis and the workpiece surface, sensors and control elements can be provided.

Darstellung der ErfindungPresentation of the invention

Es ist daher Aufgabe der vorliegenden Erfindung eine Vorrichtung sowie ein Verfahren zum Bearbeiten von mindestens zwei Werkstückkanten, die verschiedene Kantenüberstände zur jeweils anliegenden Werkstückoberfläche aufweisen, bereitzustellen, mit der/dem der Maschinenbauraum, die Störanfälligkeit und die Systemkosten reduziert werden können.It is therefore an object of the present invention to provide an apparatus and a method for processing at least two workpiece edges, which have different edge projections for the respectively adjacent workpiece surface, with which the machine installation space, the susceptibility and the system costs can be reduced.

Die Lösung der Aufgabe erfolgt durch die Vorrichtung des Patentanspruchs 1 sowie das Verfahren des Patentanspruchs 7. Bevorzugte Ausgestaltungen ergeben sich aus den jeweiligen Unteransprüchen.The object is achieved by the device of claim 1 and the method of claim 7. Preferred embodiments will become apparent from the respective dependent claims.

Der Erfindung liegt der Gedanke zu Grunde, dass der Maschinenbauraum, die Störanfälligkeit und die Systemkosten der Vorrichtungen und Verfahren der eingangs genannten Art vor allem durch die Anzahl von Systembaugruppen bzw. Bauteilen und insbesondere durch die Anzahl von Bearbeitungswerkzeugen bestimmt werden. So weisen die bekannten Vorrichtungen und Verfahren einen großen Maschinenbauraum und eine hohe Systemkomplexität mit einer entsprechend erhöhten Störanfälligkeit und hohen Systemkosten vor allem deswegen auf, da sie mindestens zwei Bearbeitungsaggregate mit jeweils mindestens einem Werkzeug oder ein CNC-gesteuertes Bearbeitungsaggregat mit mindestens einem Werkzeug umfassen. Dass im Stand der Technik für die Kantenbearbeitung eines Werkstücks mit unterschiedlichen Kantenüberständen zur jeweils anliegenden Werkstückoberfläche mindestens zwei Bearbeitungswerkzeuge erforderlich sind, liegt vor allem darin begründet, dass im Stand der Technik für die Fertigung einer Werkstückkante mit einem kantenspezifischen Kantenüberstand zur anliegenden Werkstückoberfläche ein Werkzeug/Aggregat mit einer kantenspezifisch ausgestalteten Tastrolle erforderlich ist. Da für die Kantenrundumbearbeitung einer mit einem Kantenband versehenden Werkstückschmalfläche im Allgemeinen mindestens zwei unterschiedliche Kantenüberstände erforderlich sind, weisen die Vorrichtungen und Verfahren im Stand der Technik mindestens zwei Werkzeuge mit den entsprechend ausgestalteten Tastrollen auf.The invention is based on the idea that the machine construction space, the susceptibility to faults and the system costs of the devices and methods of the type mentioned above are determined primarily by the number of system assemblies or components and in particular by the number of processing tools. Thus, the known devices and methods have a large machine space and a high system complexity with a correspondingly increased susceptibility to failure and high system costs, especially because they have at least two processing units, each with at least one tool or comprise a CNC-controlled processing unit with at least one tool. The fact that at least two processing tools are required in the prior art for the edge processing of a workpiece with different edge projections to the respective workpiece surface is mainly due to the fact that in the prior art for the production of a workpiece edge with a edge edge overhang to adjacent workpiece surface, a tool / aggregate is required with a shoulder-specific designed sensing roller. Since at least two different edge overhangs are generally required for the edge rounding of a workpiece narrow surface provided with an edge band, the devices and methods in the prior art have at least two tools with the correspondingly designed feeler rollers.

Aus diesem Grund wurde im Rahmen der Erfindung nach einer Möglichkeit gesucht, mit nur einem Nachbearbeitungsaggregat, welches ein Bearbeitungswerkzeug aufweist, mindestens zwei Werkstückkanten, die unterschiedliche Kantenüberstände zur jeweils anliegenden Werkstückoberfläche aufweisen, bearbeiten zu können.For this reason, in the context of the invention, a possibility has been sought to be able to process at least two workpiece edges, which have different edge projections to the respectively adjacent workpiece surface, with only one finishing unit, which has a machining tool.

Neben dem Nachbearbeitungsaggregat mit einem Bearbeitungswerkzeug bedarf es dafür erfindungsgemäß eine Referenzeinrichtung zum Festlegen einer Referenzposition für die Zustellpositionierung des Bearbeitungswerkzeugs des Nachbearbeitungsaggregats zu einem sich in Bearbeitung befindenden Werkstückstückabschnitt. Ferner müssen das Nachbearbeitungsaggregat und die Referenzeinrichtung so ausgestaltet sein, dass mit ihnen zwei Werkstückkanten mit einem unterschiedlichen Kantenüberstand zu der jeweils anliegenden Werkstückoberfläche bearbeitet werden können. Selbstverständlich ist die vorliegende Erfindung dabei auch geeignet, Kanten mit gleichem Kantenüberstand bearbeiten zu können, wobei unter den Begriff Kantenüberstand im Rahmen dieser Erfindung auch bündige Kanten fallen. Solch eine erfindungsgemäße Vorrichtung führt zu einem kleineren Maschinenbauraum und einer geringeren Maschinenkomplexität mit einer entsprechend geringeren Störanfälligkeit sowie geringeren Systemkosten und geringeren Energiekosten.In addition to the post-processing unit with a machining tool, according to the invention, a reference device is required for setting a reference position for the positioning positioning of the machining tool of the post-processing unit to a work piece section that is being processed. Further, the post-processing unit and the reference device must be designed so that they can be processed with them two workpiece edges with a different edge overhang to the respective adjacent workpiece surface. Of course, the present invention is also suitable to be able to process edges with the same edge overhang, wherein the term edge overhang in the frame this invention also fall flush edges. Such a device according to the invention leads to a smaller machine space and a lower machine complexity with a correspondingly lower susceptibility to interference and lower system costs and lower energy costs.

Erfindungsgemäß umfasst die Referenzeinrichtung eine Messeinrichtung zum Messen einer Werkstückabmessung und eine Steuereinrichtung zum Steuern einer Zustellung des ersten Bearbeitungswerkzeugs zu einem sich in Bearbeitung befindenden Werkstückabschnitt unter Berücksichtigung der Messung der Messeinrichtung. Solch eine Ausgestaltung bietet den Vorteil, dass eine Änderung der Werkzeugzustellung, z.B. von einer Kante zur nächsten, zu dem sich in Bearbeitung befindenden Werkstückabschnitt schnell und dynamisch erfolgen kann, was zu geringen Fertigungszeiten und damit geringeren Stückkosten führt.According to the invention, the reference device comprises a measuring device for measuring a workpiece dimension and a control device for controlling a delivery of the first machining tool to a workpiece section being processed, taking into account the measurement of the measuring device. Such an embodiment offers the advantage that a change in tool delivery, e.g. from one edge to the next, can be done quickly and dynamically to the workpiece section being processed, resulting in low production times and thus lower unit costs.

Gemäß einer bevorzugten Ausführungsform umfasst die Referenzeinrichtung dabei ein Tastmittel, wobei dieses in der vorliegenden Erfindung insbesondere eine Tastrolle ist. Dabei ist mit der Tastrolle eine vorbestimmte Zustellpositionierung des ersten Bearbeitungswerkzeugs zu dem sich in Bearbeitung befindenden Werkstückabschnitt erzielbar. Gegenüber anderen Referenzmitteln bietet das Tastmittel dabei den Vorteil, dass es eine verhältnismäßig kostengünstige, jedoch genaue, Bearbeitungswerkzeugzustellung zu dem sich in Bearbeitung befindenden Werkstückabschnitt ermöglicht.According to a preferred embodiment, the reference device comprises a feeler, which in the present invention is in particular a sensing roller. In this case, a predetermined Zustellpositionierung of the first machining tool to the workpiece section located in progress can be achieved with the sensing roller. Compared with other reference means, the feeler means offers the advantage that it allows a relatively inexpensive, but accurate, Bearbeitungswerkzeugzustellung to the work in progress workpiece section.

Gemäß einer besonders bevorzugten Ausführungsform ist das Tastmittel dabei so verstellbar, dass die Zustellposition des Bearbeitungswerkzeugs des Nachbearbeitungsaggregats zu dem sich in Bearbeitung befindenden Werkstückabschnitt verstellbar ist. Diese Ausgestaltung ermöglicht es, dass über die Verstellbarkeit des Tastmittels die Zustellpositionierung des Bearbeitungswerkzeugs zu dem sich in Bearbeitung befindenden Werkstückabschnitt von einer Kante zur nächsten Kante verändert werden kann. Auf diese Weise lassen sich somit Kanten mit einem unterschiedlichen Kantenüberstand zur jeweils anliegenden Werkstückoberfläche fertigen. Dabei erfolgt die Tastmittelverstellung bevorzugt über eine Spindelverstellung und/oder eine C-Achs-Verstellung und/oder eine Exzenter- Verstellung und/oder Tastmitteldurchmesser-Verstellung und/oder einer pneumatische Zylinderverstellung und/oder eine elektrische Linearaktuatorverstellung. Solch eine bevorzugte Ausgestaltung führt dabei zu dem Vorteil, dass sich mit nur einem Referenzmittel zwei Kanten mit einem unterschiedlichen Kantenüberstand zu der jeweils anliegenden Werkstückoberfläche bearbeiten lassen. Diese Ausgestaltung führt damit zu einer besonders geringen Maschinenkomplexität und ist somit besonders kostengünstig und wartungsarm.According to a particularly preferred embodiment, the feeler is adjustable so that the feed position of the machining tool of the post-processing unit is adjustable to the workpiece section being processed. This embodiment makes it possible to adjust the positioning position via the adjustability of the feeler of the machining tool can be changed from one edge to the next edge to the workpiece section being processed. In this way, edges can thus be finished with a different edge overhang to the respective adjacent workpiece surface. Here, the Tastmittelverstellung preferably via a spindle adjustment and / or a C-axis adjustment and / or an eccentric adjustment and / or Tastmitteldurchmesser adjustment and / or a pneumatic cylinder adjustment and / or an electrical linear actuator adjustment. Such a preferred embodiment leads to the advantage that can be processed with only one reference means two edges with a different edge overhang to the respective adjacent workpiece surface. This embodiment This leads to a particularly low machine complexity and is thus particularly cost-effective and low maintenance.

Gemäß einer weiteren bevorzugten Ausführungsform weist die Vorrichtung ferner ein weiteres Bearbeitungsaggregat mit einem zweiten Bearbeitungswerkzeug zur Bearbeitung einer Werkstückkante des Werkstücks auf. Dabei umfasst diese Ausführungsform eine Andrückeinrichtung zum Andrücken des Werkstücks an ein Referenzmittel. Durch das Andrücken des Werkstücks an das Referenzmittel ist eine Bearbeitung der Kante, welche an dem Referenzmittel anliegt, mit einer konstanten vertikalen Werkzeugposition möglich. Dies liegt darin begründet, dass das Andrücken in gewissem Maß Unebenheiten an der dem Referenzmittel anliegenden Werkstückkante beseitigt und somit zu einer Werkstückkante führt, die entlang des Referenzmittels einen konstanten Normalabstand zum Referenzmittel aufweist. Ferner ist durch das weitere Bearbeitungsaggregat, welches auch ohne Tastmittel ausgestaltet sein kann, eine schnellere Kantenrundumbearbeitung der Werkstückoberfläche möglich, da mit dem weiteren Bearbeitungsaggregat parallel zum Nachbearbeitungsaggregat eine weitere Werkstückkante bearbeitet werden kann. Im Falle einer Durchlaufbearbeitung kann durch diese bevorzugte Ausgestaltung auch der Verfahrbereich des Nachbearbeitungsaggregats verkleinert werden, was zu einem kleineren und kostengünstigeren Maschinenaufbau führt. Zusätzlich wird die Taktleistung der Maschine erhöht, da der Vorschub erhöht und die Werkstücklücke verkleinert wird.According to a further preferred embodiment, the device further comprises a further processing unit with a second processing tool for processing a workpiece edge of the workpiece. In this case, this embodiment comprises a pressing device for pressing the workpiece to a reference means. By pressing the workpiece against the reference means, a machining of the edge, which bears against the reference means, is possible with a constant vertical tool position. This is due to the fact that the pressing to a certain extent eliminates unevenness at the workpiece edge abutting the reference means and thus leads to a workpiece edge having a constant normal distance to the reference means along the reference means. Furthermore, a faster Kantenrundumbearbeitung the workpiece surface is possible by the further processing unit, which can be configured without Tastmittel, as with the other processing unit parallel to the post-processing unit, a further workpiece edge can be edited. In the case of a continuous processing, the travel range of the post-processing unit can be reduced by this preferred embodiment which results in a smaller and less expensive machine structure. In addition, the cycle performance of the machine is increased because the feed increases and the workpiece gap is reduced.

Für die in den Verfahrensansprüchen aufgezeigten bevorzugten Ausführungsformen des Verfahrens gelten die gleichen Vorteile, wie für die jeweiligen bevorzugten Ausführungsformen der Vorrichtungen, auf die sie sich beziehen.For the indicated in the method claims preferred embodiments of the method, the same advantages apply, as for the respective preferred embodiments of the devices to which they relate.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

  • Fig. 1 zeigt eine Seitenansicht einer Vorrichtung einer bevorzugten Ausführungsform der vorliegenden Erfindung. Fig. 1 shows a side view of an apparatus of a preferred embodiment of the present invention.
  • Fig. 2 zeigt eine Vorderansicht einer Vorrichtung einer bevorzugten Ausführungsform der vorliegenden Erfindung. Fig. 2 shows a front view of a device of a preferred embodiment of the present invention.
  • Fig. 3 zeigt eine Seitensicht auf eine zu bearbeitende, mit einem Kantenband beschichtete, Schmalfläche eines Werkstücks und schematisch den Bearbeitungsablauf. Fig. 3 shows a side view of an editable, coated with an edge band, narrow surface of a workpiece and schematically the processing sequence.
  • Fig. 4a zeigt das Nachbearbeitungsaggregat einer bevorzugten Ausführungsform in einer ersten Tastmittelkantenbearbeitungsstellung und Fig. 4b zeigt das Nachbearbeitungsaggregat einer bevorzugten Ausführungsform in einer Messeinrichtungskantenbearbeitungsstellung. Fig. 4a shows the post-processing unit of a preferred embodiment in a first key edge processing position and Fig. 4b shows the post-processing unit of a preferred embodiment in a measuring device edge processing position.
Detaillierte Beschreibung der bevorzugten AusführungsformenDetailed Description of the Preferred Embodiments

Bevorzugte Ausführungsformen der vorliegenden Erfindung werden nachfolgend unter Bezugnahme auf die begleitenden Zeichnungen beschrieben. Weitere Varianten und Modifikationen können jeweils miteinander kombiniert werden, um weitere Ausführungsformen auszubilden.
Die Bearbeitungsvorrichtungen der bevorzugten Ausführungsformen dienen dem Bearbeiten von Kanten einer mit einem Kantenband vorsehenden Schmalseite eines plattenförmigen Werkstücks, wobei das Kantenband an die Schmalfläche mit einem Überstand angeleimt oder auf sonstige Weise vorgesehen ist. In den vorliegenden Ausführungsformen weist das Kantenband dabei eine Haftmittel- oder Funktionsschicht auf, die durch Energieeintrag (beispielsweise Erwärmung oder Laserstrahlung) haftende Eigenschaften entfaltet, und über welche das Kantenband an die Werkstückschmalseite des Werkstücks gefügt wird. Die verwendeten Werkstücke bestehen zumindest abschnittsweise aus Holz, Holzwerkstoffen, Kunststoff oder dergleichen, wie sie beispielsweise im Bereich der Möbel- und Bauelementindustrie zum Einsatz kommen. Dabei kann es sich um unterschiedlichste Materialien, wie beispielsweise Massivholz- oder Spanplatten, Leichtbauplatten, Sandwichplatten, oder dergleichen handeln. Die vorliegende Erfindung ist jedoch nicht auf derartige Werkstücke, Beschichtungsarten und Bearbeitungsvorrichtungen beschränkt.
Im Folgenden werden drei bevorzugte Ausführungsformen einer Kantenbearbeitungsvorrichtung beschrieben.Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Other variants and modifications can each be combined with each other to form further embodiments.
The processing devices of the preferred embodiments are used to edit edges of an edge band provided with a narrow side of a plate-shaped workpiece, wherein the edge band is glued to the narrow surface with a supernatant or otherwise provided. In the present embodiments, the edge band has an adhesive or functional layer which unfolds adhesive properties due to energy input (for example heating or laser radiation) and via which the edge band is joined to the workpiece narrow side of the workpiece. The workpieces used consist at least in sections of wood, wood materials, plastic or the like, as used for example in the field of furniture and component industry. These may be a wide variety of materials, such as solid wood or chipboard, lightweight panels, sandwich panels, or the like. However, the present invention is not limited to such workpieces, coating types and processing devices.
In the following, three preferred embodiments of an edge processing device will be described.

Ausführungsform 1Embodiment 1

Fig. 1 zeigt eine Seitenansicht einer Ausführungsform einer Kantenbearbeitungsvorrichtung 1 gemäß der vorliegenden Erfindung. Die Kantenbearbeitungsvorrichtung 1 umfasst eine Fördereinrichtung 3, ein Nachbearbeitungsaggregat 4, eine Referenzeinrichtung 5 und eine Andrückeinrichtung. Fig. 1 shows a side view of an embodiment of an edge processing device 1 according to the present invention. The edge processing device 1 comprises a conveyor 3, a post-processing unit 4, a reference device 5 and a pressing device.

Das Nachbearbeitungsaggregat 4 umfasst ein Fräswerkzeug 7, welches durch einen nicht im Detail gezeigten Antrieb angetrieben wird. Das Fräswerkzeug 7 ist dabei über einen Werkzeugschlitten 6 in eine Richtung FV, d.h. senkrecht zu einer Werkstückvorschubrichtung VR, verschiebbar an einer Trageinrichtung 8 gelagert. Die Trageinrichtung 8 ist fest auf einem Axialschlitten 9 montiert, der über eine Führungseinrichtung in Vorschubrichtung VR relativ zur Fördereinrichtung 3 verfahrbar ist.The post-processing unit 4 comprises a milling tool 7, which is driven by a drive, not shown in detail. The milling tool 7 is over a Tool carriage 6 in a direction FV, ie perpendicular to a workpiece feed direction VR, slidably mounted on a support means 8. The support device 8 is fixedly mounted on an axial slide 9, which is movable relative to the conveyor 3 via a guide device in the feed direction VR.

Das Nachbearbeitungsaggregat 4 ist in dieser bevorzugten Ausführungsform als Formfräsaggregat mit einer Tastrolle 10 ausgebildet. Die Tastrolle 10 ist an dem Schlitten 6 so vorgesehen, dass diese beim Überfahren einer Werkstückoberfläche eine Zustellposition des Fräswerkzeugs 7 zu dem sich in Bearbeitung befindenden Werkstückabschnitt festlegt. In dieser ersten Ausführungsform ist die Tastrolle 10 des Nachbearbeitungsaggregat 4 dabei so ausgestaltet, dass bei deren Einsatz das Fräswerkzeug 7 die sich in Bearbeitung befindende Werkstückkante bündig mit der Werkstückoberfläche fräst, wie es in Fig. 4a gezeigt ist.The finishing unit 4 is formed in this preferred embodiment as Formfräsaggregat with a sensing roller 10. The follower roller 10 is provided on the carriage 6 so that it defines a feed position of the milling tool 7 to the workpiece section in progress when passing over a workpiece surface. In this first embodiment, the follower roller 10 of the post-processing unit 4 is designed such that, when used, the milling tool 7 mills the workpiece edge being machined flush with the workpiece surface, as shown in FIG Fig. 4a is shown.

Die Referenzeinrichtung weist eine Messeinrichtung 5 zum Messen der Werkstückdicke eines Werkstücks 2 auf, die dem Nachbearbeitungsaggregat 4 in Vorschubrichtung VR vorgelagert angeordnet ist. Hier sind jegliche Messverfahren und Systeme denkbar, wie zum Beispiel eine optische, taktile, kapazitive oder sonstige Dickenmessung. Das vorliegende Sensortastmesssystem umfasst eine Tastrolle 11, die so ausgestaltet ist, dass sie der Oberflächenkontur des Werkstücks 2 folgt, wenn dieses in Vorschubrichtung VR relativ zur Tastrolle bewegt wird. Bei einer Oberflächenkonturänderung bewegt sich die Tastrolle 11 entsprechend vertikal in die Richtung FV. Da das Werkstück 2 mit der Andrückeinrichtung 6 an die Fördereinrichtung 3 angedrückt wird, entspricht die vertikale Bewegung der Tastrolle 11 der Werkstückdickenänderung.The reference device has a measuring device 5 for measuring the workpiece thickness of a workpiece 2, which is arranged upstream of the post-processing unit 4 in the feed direction VR. Here are any measuring methods and systems conceivable, such as an optical, tactile, capacitive or other thickness measurement. The present sensor load measuring system comprises a touch roller 11, which is designed so that it follows the surface contour of the workpiece 2, when it is moved in the feed direction VR relative to the sensing roller. In a surface contour change, the sensing roller 11 moves vertically in the direction FV accordingly. Since the workpiece 2 is pressed with the pressing device 6 to the conveyor 3, the vertical movement of the follower roller 11 corresponds to the workpiece thickness change.

Die Bearbeitungsvorrichtung 1 weist ferner eine nicht gezeigte Steuereinrichtung auf, an welche die Messdaten der Messeinrichtung 5 übermittelt werden. Die Steuereinrichtung ist dabei so eingerichtet, dass sie anhand der Messdaten die Position des Fräswerkzeug 7 des Nachbearbeitungsaggregats 4 während der Kantenbearbeitung in der vertikalen Richtung FV so steuern kann, dass eine gewünschte Fräswerkzeugzustellung zu dem zu bearbeitenden Werkstückabschnitt erzielbar ist.The processing device 1 further comprises a control device, not shown, to which the measurement data of the Measuring device 5 are transmitted. In this case, the control device is set up in such a way that, based on the measurement data, it can control the position of the milling tool 7 of the post-processing unit 4 during edge processing in the vertical direction FV in such a way that a desired milling tool delivery to the workpiece section to be machined can be achieved.

Die Fördereinrichtung 3 ist in der vorliegenden Ausführungsform als eine Förderkette ausgestaltet, obgleich auch vielfältige andere Ausgestaltungen möglich sind. Die Andrückeinrichtung weist beispielsweise Riemen und/oder Rollen auf.The conveyor 3 is configured in the present embodiment as a conveyor chain, although a variety of other configurations are possible. The pressing device has, for example, belts and / or rollers.

Im Folgenden wird der Bearbeitungsablauf der Kanten einer Schmalseite eines Werkstücks 2 für die erste Ausführungsform der vorliegenden Erfindung beschrieben.Hereinafter, the processing procedure of the edges of a narrow side of a workpiece 2 for the first embodiment of the present invention will be described.

Das Werkstück 2 wird über die Förderkette 3 in eine Förderrichtung VR bewegt und während des gesamten Bearbeitungsprozesses über die Andrückeinrichtung 6 an die Förderkette 3 angedrückt. Dabei passiert das Werkstück in einem ersten Schritt die Tastrolle 11 der Messeinrichtung 5. Über die Messeinrichtung 5 wird wie zuvor beschrieben die Werkstückdicke des Werkstücks 2 abschnittsweise oder entlang der gesamten Werkstückkante gemessen und die Messdaten werden an die nicht gezeigte Steuereinrichtung übermittelt.The workpiece 2 is moved via the conveyor chain 3 in a conveying direction VR and pressed on the conveyor chain 3 during the entire processing process via the pressing device 6. In this case, the workpiece passes in a first step, the sensing roller 11 of the measuring device 5. About the measuring device 5 as described above, the workpiece thickness of the workpiece 2 in sections or along the entire workpiece edge measured and the measurement data are transmitted to the control device, not shown.

In einem anschließenden ersten Kantenbearbeitungsschritt fährt der Axialschlitten 9 samt Trageinrichtung 8 und Werkzeugschlitten 6 so mit dem Werkstück 2 mit, dass keine Relativbewegung in Vorschubrichtung VR zwischen Werkstück 2 und Axialschlitten 9 entsteht. Nun wird eine erste Werkstückkante K1, siehe Fig. 3, unter Einsatz der Tastrolle 10 bündig mit dem Werkstück 2 gefräst, indem das Fräswerkzeug 7 in vertikaler Richtung FV über den Werkzeugschlitten 6 relativ zur Trageinrichtung 8 und dem Werkstück 2 verfahren wird. Anschließend wird der Axialschlitten 9 gegen die Vorschubrichtung des Werkstücks VR verfahren und bearbeitet eine zweite Werkstückkante K2, siehe Fig. 3, in so einer Form, dass ein Überstand d, siehe Fig. 4b, hier beispielsweise 0,1 mm, zwischen der Kantenoberkante zur anliegenden Werkstückoberfläche entlang der gesamten Werkstücklängskante K2 entsteht, wie es in Fig. 4b schematisch gezeigt ist. In dieser ersten bevorzugten Ausführungsform wird die Bearbeitung der Kante K2 mit konstantem Kantenüberstand d dabei so aufgeführt, dass die vertikale Zustellposition des Fräswerkzeugs 7 zu der Werkstückoberfläche des Werkstücks 2 mit der Steuereinrichtung unter Berücksichtigung der Werkstückdickenmessung der Messeinrichtung 5 erfolgt. In einem dritten Schritt fährt das Nachbearbeitungsaggregat 4 erneut in die Vorschubrichtung VR des Werkstückes 2 mit, sodass in diese Richtung keine Relativbewegung zwischen dem Axialschlitten 9 und dem Werkstück 2 entsteht. Nun wird eine dritte Werkstückkante K3, siehe Fig. 3, unter Einsatz der Tastrolle 10 bündig mit der Oberfläche des Werkstücks 2 gefräst, indem das Fräswerkzeug 7 in vertikaler Richtung FV relativ zur Trageinrichtung 8 und zum Werkstück 2 verfahren wird. In einem vierten Schritt wird das Nachbearbeitungsaggregat 4 in Vorschubrichtung VR schneller als das Werkstück 2 verfahren, sodass eine Relativbewegung zwischen dem Axialschlitten 9 und dem Werkstück 2 entsteht. Dabei wird eine vierte Kante K4, siehe Fig. 3, des Werkstücks 2 mit dem Fräswerkzeug 7 bearbeitet. Analog zur Kante K2 des Werkstücks 2 wird diese vierte Kante K4 ebenfalls mit einem konstanten Überstand d, hier 0,1 mm, der Kantenoberkante zur Werkstückoberfläche bearbeitet. Da das Werkstück 2 über die Andrückeinrichtung 6 auf der Förderkette 3 fixiert und an diese angedrückt wird, ist auf dieser Unterseite des Werkstücks 2 eine Kantenbearbeitung mit konstanter vertikaler Position des Nachbearbeitungsaggregats 4 entlang der gesamten Längskante möglich, sodass die Werkstückdicke nur bei der Bearbeitung der Kante K2 berücksichtigt werden muss. Wie den zuvor beschriebenen Ausführungen zu entnehmen ist, ist in der ersten bevorzugten Ausführungsform eine Rundumbearbeitung des Werkstücks gegen den Uhrzeiger bevorzugt. Es wird jedoch darauf hingewiesen, dass hier auch eine Rundumbearbeitung des Werkstücks 2 im Uhrzeigersinn denkbar ist.In a subsequent first edge-processing step, the axial slide 9 together with the support device 8 and the tool carriage 6 travel with the workpiece 2 in such a way that no relative movement in the feed direction VR between the workpiece 2 and the axial slide 9 occurs. Now, a first workpiece edge K1, see Fig. 3 , Milled using the sensing roller 10 flush with the workpiece 2 by the milling tool 7 is moved in the vertical direction FV on the tool carriage 6 relative to the support means 8 and the workpiece 2. Subsequently, the axial slide 9 against the Feed direction of the workpiece VR moved and processed a second workpiece edge K2, see Fig. 3 , in such a form that a supernatant d, see Fig. 4b Here, for example, 0.1 mm, between the edge edge to the adjacent workpiece surface along the entire workpiece longitudinal edge K2 arises, as in Fig. 4b is shown schematically. In this first preferred embodiment, the processing of the edge K2 with constant edge projection d is performed so that the vertical feed position of the milling tool 7 to the workpiece surface of the workpiece 2 with the control device takes into account the workpiece thickness measurement of the measuring device 5. In a third step, the post-processing unit 4 moves again in the feed direction VR of the workpiece 2, so that in this direction no relative movement between the axial slide 9 and the workpiece 2 is formed. Now, a third workpiece edge K3, see Fig. 3 , Milled using the sensing roller 10 flush with the surface of the workpiece 2 by the milling tool 7 is moved in the vertical direction FV relative to the support means 8 and the workpiece 2. In a fourth step, the post-processing unit 4 is moved faster in the feed direction VR than the workpiece 2, so that a relative movement between the axial slide 9 and the workpiece 2 is formed. Thereby a fourth edge K4, see Fig. 3 , the workpiece 2 processed with the milling tool 7. Analogous to the edge K2 of the workpiece 2, this fourth edge K4 is also processed with a constant projection d, in this case 0.1 mm, of the edge upper edge to the workpiece surface. Since the workpiece 2 is fixed on the conveyor chain 3 via the pressing device 6 and is pressed against this, an edge machining with a constant vertical position of the post-processing unit 4 along the entire longitudinal edge is possible on this underside of the workpiece 2, so that the workpiece thickness only during the processing of the edge K2 must be considered. As can be seen from the embodiments described above, is in the First preferred embodiment, a round machining of the workpiece counterclockwise preferred. It should be noted, however, that here also a round machining of the workpiece 2 in a clockwise direction is conceivable.

Ausführungsform 2Embodiment 2

Die zweite bevorzugte Ausführungsform basiert auf der ersten bevorzugten Ausführungsform. Im Unterschied dazu, weist sie ein weiteres Bearbeitungsaggregat 15 mit einem zweiten Fräswerkzeug 16 auf.The second preferred embodiment is based on the first preferred embodiment. In contrast, it has a further processing unit 15 with a second milling tool 16.

Im Unterschied zu der ersten Ausführungsform wird in dieser bevorzugten Ausführungsform die vierte Werkstückkante K4 mit dem weiteren Bearbeitungsaggregat 15 und nicht mit dem Nachbearbeitungsaggregat 4 bearbeitet. Das weitere Bearbeitungsaggregat 15 ist dabei über eine weitere Trageinrichtung 17 fest mit der Führungseinrichtung verbunden, sodass diese in Vorschubrichtung VR nicht bewegbar ist. Wie bereits zuvor beschrieben, ist die Bearbeitung der vierten Werkstückkante K4 mit einer konstanten vertikalen Position des Fräswerkzeugs möglich und so wird das Fräswerkzeug 16 des weiteren Bearbeitungsaggregats 15 während der Kantenbearbeitung in die Vertikalrichtung FV nicht verstellt. Stattdessen erfolgt die Bearbeitung der Kante K4, indem das Werkstück 2 über die Förderkette 3 relativ zum Fräswerkzeug 16 des weiteren Bearbeitungsaggregats 15 bewegt wird. Da in dieser Ausführungsform der Axialschlitten 9 mit Nachbearbeitungsaggregat 4 während der Bearbeitung der Kante K4 nicht mit dem Werkstück 2 mitfahren muss und damit der Verfahrbereich des Axialschlittens 9 kleiner ausgestaltbar ist, weist diese dritte Ausführungsform einen geringeren Maschinenbauraum und mehr Leistung als die erste und zweite Ausführungsform auf.In contrast to the first embodiment, in this preferred embodiment, the fourth workpiece edge K4 is processed with the further processing unit 15 and not with the post-processing unit 4. The further processing unit 15 is connected via a further support means 17 fixed to the guide device, so that it is not movable in the feed direction VR. As already described above, the processing of the fourth workpiece edge K4 is possible with a constant vertical position of the milling tool and so the milling tool 16 of the further processing unit 15 is not adjusted during edge processing in the vertical direction FV. Instead, the processing of the edge K4 by the workpiece 2 is moved over the conveyor chain 3 relative to the milling tool 16 of the further processing unit 15. Since, in this embodiment, the axial slide 9 with finishing unit 4 does not have to move with the workpiece 2 during the processing of the edge K4, and thus the travel range of the axial slide 9 can be made smaller, this third embodiment has a smaller machine space and more power than the first and second embodiments on.

In einer alternativen Variante dieser Ausführungsform weist das weitere Bearbeitungsaggregat 15 ein Tastmittel, insbesondere Tastrolle, auf, das eine vorbestimmte Zustellpositionierung des zweiten Fräswerkszeugs 16 zu dem sich in Bearbeitung befindenden Werkstückabschnitt ermöglicht.In an alternative variant of this embodiment, the further processing unit 15 has a feeler, in particular a feeler roller, which allows a predetermined positioning positioning of the second Fräswerkszeugs 16 to the work in progress workpiece section.

In dieser Variante erfolgt die Werkstückkantenbearbeitung im Uhrzeigersinn. Dabei wird mit dem Nachbearbeitungsaggregat 4 zuerst die Kante K1, anschließend die Kante K4 und danach die Kante K3 bearbeitet. Die Kante K2 wird in einem darauf folgenden Bearbeitungsschritt mit dem zweiten Bearbeitungswerkzeug 16 des weiteren Bearbeitungsaggregat 15 unter Zuhilfenahme des Tastmittels des weiteren Bearbeitungsaggregats bearbeitet.In this variant, the workpiece edge machining is done in a clockwise direction. In this case, first the edge K1, then the edge K4 and then the edge K3 are processed with the finishing unit 4. The edge K2 is in a subsequent processing step with the second processing tool 16 of the further processing unit 15th edited with the help of the feeler of the other processing unit.

Claims (14)

  1. Apparatus for machining the edges of a workpiece (2), in particular for machining the edges of a workpiece surface and particularly preferably a narrow side of a workpiece provided with an edge strip, wherein the workpiece (2) is preferably in at least one section made from wood, derived timber products, plastic or the like, having:
    a finishing unit (4) with a first machining tool (7), in particular a milling tool, for machining a workpiece edge,
    a reference device for fixing a reference position for positioning the first machining tool (7) for delivery to a workpiece section which is being machined,
    wherein the finishing unit (4) and the reference device are designed to be able to machine at least two edges of the workpiece (2) with a different edge overlap of the respectively adjacent workpiece surface;
    characterised in that
    the reference device has a measuring device (5) for measuring a work thickness, and a control device for controlling delivery of the first machining tool (7) to a workpiece section which is being machined, taking the measurement of the measuring device (5) into consideration.
  2. Apparatus according to claim 1, characterised in that the reference device has a sensing means (10), in particular a sensing roller, by means of which a predetermined position of the first machining tool (7) for delivery to the workpiece section which is being machined is obtainable.
  3. Apparatus according to claim 2, characterised in that the sensing means (10) is adjustable in such a way that the position of the first machining tool (7) for delivery to the workpiece section which is being machined is variable, wherein adjustment of the sensing means (10) is preferably effected by means of a spindle adjustment and/or a C axis adjustment and/or an eccentric adjustment and/or a sensing means diameter adjustment and/or a pneumatic cylinder adjustment and/or an electric linear actuator adjustment.
  4. Apparatus according to any of the preceding claims, characterised in that the apparatus further has an additional machining unit (15) with a second machining tool (16), in particular a milling tool, and preferably a sensing means for machining an edge of the workpiece (2) and a contact pressure device (6) for pressing the workpiece (2) against a reference means (3).
  5. Apparatus according to any of the preceding claims, characterised in that the finishing unit (4) is CNC-controlled.
  6. Apparatus according to any of the preceding claims, characterised in that the apparatus has a conveying device (3), in particular a continuous conveying device, for bringing about a relative movement between finishing unit (4) and workpiece (2).
  7. Method for machining the edges of a workpiece (2), in particular for machining the edges of a workpiece surface and particularly preferably a narrow side of a workpiece (2) provided with an edge strip, wherein the workpiece (2) is preferably in at least one section made from wood, derived timber products, plastic or the like, using an apparatus according to any of claims 1 to 6, having the steps of:
    providing a workpiece (2) to be machined;
    machining first, second and third workpiece edges with the finishing unit (4);
    machining a fourth workpiece edge.
  8. Method according to claim 7, wherein the method further comprises:
    measuring a workpiece thickness with the measuring device (5);
    controlling delivery of the first machining tool (7) to a workpiece section which is being machined with the control device, taking the measurement of the measuring device (5) into consideration.
  9. Method according to claim 8 using an apparatus according to any of claims 2-6, characterised in that the sensing means (10) of the reference device is used for machining the first and third workpiece edges, and the measuring device (5) of the reference device for machining the second workpiece edge.
  10. Method according to any of claims 7-9, characterised in that the fourth workpiece edge is machined with the finishing unit (4).
  11. Method according to any of claims 7-9 using an apparatus according to any of claims 4-6, characterised in that the workpiece is pressed against a reference means by the contact pressure device (6), and the fourth workpiece edge which forms the lower side of the workpiece is machined with the additional machining unit (15).
  12. Method according to any of claims 7-9 using an apparatus according to any of claims 4-6, characterised in that the fourth workpiece edge which forms the upper side of the workpiece is machined with the additional machining unit (15) which has a sensing means.
  13. Method according to any of claims 7-10 using an apparatus according to any of claims 2-6, characterised in that the sensing means (10) of the reference device is used to machine all four workpiece edges, and the sensing means is adjusted between machining the first and second workpiece edges, so that the two workpiece edges are machined with a different tool delivery to the workpiece section which is being machined at any given time.
  14. Method according to any of claims 7 to 13, characterised in that the workpiece (2) is machined continuously, and the finishing unit (4) travels with the workpiece (2) during machining of the first and third workpiece edges.
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DE202009005667U1 (en) * 2009-04-18 2009-07-02 Schulte-Göbel, Christof Edger
DE102010009525A1 (en) * 2010-02-26 2011-09-01 Homag Holzbearbeitungssysteme Ag Apparatus for processing the narrow surfaces of preferably plate-shaped workpieces
DE102010023547B4 (en) * 2010-06-11 2013-05-08 Ima Klessmann Gmbh Holzbearbeitungssysteme Method and processing unit for flush trimming and / or removal of an edge band
DE102010048907A1 (en) * 2010-10-08 2012-04-12 Homag Holzbearbeitungssysteme Gmbh Edging strip processing device has scraping device with scraping tool, where scraping tool has tool cutting edge, and tool cutting edge is engaged at edge strip which is to be processed

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EP2792460A1 (en) 2014-10-22
ES2622728T3 (en) 2017-07-07

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