EP0820369A1 - Tool head for a shaping machine - Google Patents

Tool head for a shaping machine

Info

Publication number
EP0820369A1
EP0820369A1 EP96907366A EP96907366A EP0820369A1 EP 0820369 A1 EP0820369 A1 EP 0820369A1 EP 96907366 A EP96907366 A EP 96907366A EP 96907366 A EP96907366 A EP 96907366A EP 0820369 A1 EP0820369 A1 EP 0820369A1
Authority
EP
European Patent Office
Prior art keywords
tool
tool head
clamping
head according
base body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96907366A
Other languages
German (de)
French (fr)
Other versions
EP0820369B1 (en
Inventor
Hermann Gross
Albert Haas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Publication of EP0820369A1 publication Critical patent/EP0820369A1/en
Application granted granted Critical
Publication of EP0820369B1 publication Critical patent/EP0820369B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/007—Combined with manufacturing a workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1902—Gang

Definitions

  • the invention relates to a tool head for profile chippers for processing the lateral segments of logs, with a rotary-driven tool head base body which carries several groups of cleavers on its circumference and at least one finishing tool on its end face, each group of cleavers having at least one front-end cleaver.
  • Profile chippers of this type are known (for example DE 3038566 C2). They are used to cut lateral segments from untreated or already flattened wooden trunks, whereby the chopping knives of the tool head produce useful chips.
  • a surface finishing tool attached to the front of the tool head is used to finish the surface, which in many cases consists of circular saw segments, a circular saw ring or finishing knives.
  • the finishing tool can be arranged pre-cutting or re-cutting in relation to the neighboring chopping knife, which is referred to in this context as "front-side chopping knife 11.
  • the pre-cutting sizing knives prevent tears from the front-side chopping knife from continuing into the remaining wood surface the relatively uneven wooden surface produced on the front cleavers.
  • the object of the invention is therefore to design a tool head of the type mentioned at the outset in such a way that the interruptions in operation caused by the unavoidable wear and tear on the tool are largely reduced.
  • This object is achieved in that the front cleaver and the finishing tool are attached to a common tool carrier, which is attached to the main body of the tool head in an exchangeable manner.
  • the tool carrier can be a ring segment or a ring. If circular saw segments are used as finishing tools, to which a group of chopping knives is usually assigned, then it is advantageous to design the tool carrier as a ring segment that carries the front-side cleaver at its leading end and the circular saw ring segment on its end face as a finishing tool.
  • the finishing tool is designed as a circular saw ring
  • the tool carrier is also advantageously designed as a ring.
  • the tool carrier is fastened to the main body of the tool head by means of quick-release devices.
  • quick-action clamping devices make it possible to carry out the tool change particularly quickly, so that the required ones are thereby
  • the quick-action clamping device preferably has at least one axially parallel clamping pin projecting from the tool carrier, which projects into a clamping bore of the main tool head body and is in each case in engagement with a clamping device. It is particularly favorable in terms of design to center the clamping pins in the clamping bores.
  • FIG. 1 a spatial representation of a tool head of a profile chipper, one of the tool carriers being shown in the removed state and a central guide plate of the tool head being omitted for the sake of simplicity of illustration,
  • Fig. 2 is an enlarged partial radial section of the tool head of FIG. 1 with an attached actuator for a quick release device and
  • the tool head of a profile chipper shown in FIG. 1 has a tool head base body 1 which is essentially frustoconical on its circumference and which is connected to a drive shaft (not shown) and carries the tools around the lateral segments of a log which is moved along the tool head to process into chips.
  • a drive shaft not shown
  • three groups of three chopping knives 2 and 3 are attached, each group consisting of a front-side chopping knife 2 and two further chopping knives 3 which are axially staggered.
  • the front cleaver 2 of each group and in each case one of the circular saw ring segments 4 as a finishing tool are attached to a common tool carrier 5, which is designed as a ring segment in the exemplary embodiment shown.
  • the tool carrier 5 is detachably and exchangeably received on the end face of the tool head base body 1.
  • the tool carrier 5 can also be designed as a ring.
  • the tool carrier 5 is fastened to the tool head base body 1 by means of quick-release devices 6.
  • an axially parallel clamping pin 9 is received in two bores 8 running parallel to the axis of rotation 7 of the tool head, which is fastened to the tool carrier 5 by means of screws 11 via a flange 10.
  • Fastening screws 12 for the circular saw ring segment 4 are screwed into the front of the clamping pin 9.
  • each tool carrier 5 protrude into the front clamping holes 13 of the tool carrier base body 1, which are each provided with a bush 14. In this way, the clamping pins 9 and thus also the tool carrier 5 are centered in the clamping bores 13.
  • Each clamping pin 9 has a thickened clamping head 15 which is engaged behind by a (not shown) holding element of a clamping device 16.
  • the clamping device 16 is inserted into an extended extension 17 of the clamping bore 13. It is, for example, a pressure medium-operated tensioning device 16, as is known from the "Innovative Docking and Clamping Systems" brochure from CyTec Cylinder Technology GmbH and is available on the market.
  • the holding element of such a clamping device 16 engaging behind the clamping head 15 is a pressure-medium-operated collet which is also self-locking in the clamping state and is pressure-free.
  • the pressure medium supply for actuating the clamping device 16 for clamping and releasing takes place via channels 18, 19, which open at the end face of the tool head base body 1 at a pressure medium coupling connection 20.
  • the channels 18, 19 can also run through the drive shaft of the cutter head, for example.
  • connection ring 21 which is common to all clamping devices 16 of the tool head is provided for this purpose, which is fastened on the end face to the tool head base body 1 and covers the mouths of the channels 18, 19.
  • a connection bore 22 of the connection ring 21 a supply pin 23 can be inserted and connected in a pressure-tight manner, through which the pressure medium required for actuating the tensioning device 16 is supplied and discharged.
  • a support disk 24, which is rotatably mounted on the end face of the tool head, has a through bore 25 through which the supply pin 23 can be inserted up to the connection bore 22.
  • the pressure-medium-operated tensioning device 16 shown in FIG. 2 is inserted into the tensioning bore 13 and its extension 17 Stepped bolt 26 replaced, which has a centering pin 27 protruding from the end of the tool head base body 1.
  • the tool carrier 5 is screwed onto the centering pin 27, which projects centering into the bore 8 of the tool carrier 5, a spacer 27a being placed underneath.
  • the exemplary embodiment shown in FIG. 4 differs from the exemplary embodiment according to FIG. 3 only in that, instead of the circular saw ring segment 4 as a finishing tool, one or more finishing knives 4 'are attached to the tool carrier 5.
  • All of the exemplary embodiments shown have in common that the tool carriers 5 with the circular saw ring segments 4 or finishing knives 4 ′ and the end chopping knives 2 attached to them can be replaced quickly and easily after tool wear.
  • the clamping devices 16 or - in the embodiment according to FIGS. 3 and 4 - the fastening screws 12 are loosened and the tool carrier 5 with the worn tools is removed.
  • a new tool holder 5 carrying sharp and preset tools 2 and 4 or 4 ' is placed on the tool head base body 1, centered and clamped so that the tool head is immediately ready for use again. All of the measures required for replacing the tool carrier 5 can be carried out from the front of the tool head.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Gripping On Spindles (AREA)
  • Harvester Elements (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Drilling Tools (AREA)
  • Turning (AREA)
  • Milling Processes (AREA)

Abstract

The invention concerns a tool head for shaping machine designed to machine the side segments of tree trunks. The tool head has a rotationally driven main body (1) with several groups of chipper blades (2, 3) round its circumference. The front chipper blade (2) in each group and a front-mounted finishing tool, e.g. a segment (4) of a circular-saw blade, are mounted on a common tool carrier (5). The tool carrier (5) is detachably attached to the tool-head main body (1) and is held in place by clamps (16). If, as a result of wear, it becomes necessary to replace a tool, the tool carrier is replaced after the clamp (16) has been loosened.

Description

Werkzeugkopf für ProfilzerspanerTool head for profile chippers
Die Erfindung betrifft einen Werkzeugkopf für Profilzerspaner zur Verarbeitung der seitlichen Segmente von Holzstämmen, mit einem drehangetriebenen Werkzeugkopf- Grundkörper, der an seinem Umfang mehrere Gruppen von Hackmessern und an seiner Stirnfläche mindestens ein Schlichtwerkzeug trägt, wobei jede Gruppe von Hackmessern mindestens ein stirnseitiges Hackmesser aufweist.The invention relates to a tool head for profile chippers for processing the lateral segments of logs, with a rotary-driven tool head base body which carries several groups of cleavers on its circumference and at least one finishing tool on its end face, each group of cleavers having at least one front-end cleaver.
Derartige Profilzerspaner sind bekannt (z.B. DE 3038566 C2). Sie dienen dazu, von unbearbeiteten oder bereits zweiseitig angeflachten Holzstämmen seitliche Segmente abzuspanen, wobei die Hackmesser des Werkzeugkopfes Nutzspäne erzeugen. Zum Schlichten der dabei am Holzstamm erzeugten Fläche dient ein stirnseitig am Werkzeugkopf angebrachtes Schlichtwerkzeug, das in vielen Fällen aus Kreissägesegmenten, einem Kreissägering oder aus Schlichtmessern besteht. Das Schlichtwerkzeug kann gegenüber dem benachbarten Hackmesser, das in diesem Zusammenhang als "stirnseitiges Hackmesser11 bezeichnet wird, vorausschneidend oder nachschneidend angeordnet sein. Die vorausschneidenden Schlichtmesser verhindern, daß vom stirnseitigen Hackmesser ausgehende Einrisse sich bis in die verbleibende Holzoberfläche fortsetzen. Nachschneidende Schlichtmesser schlichten die von den stirnseitigen Hackmessern erzeugte, verhältnismäßig unebene Holzfläche.Profile chippers of this type are known (for example DE 3038566 C2). They are used to cut lateral segments from untreated or already flattened wooden trunks, whereby the chopping knives of the tool head produce useful chips. A surface finishing tool attached to the front of the tool head is used to finish the surface, which in many cases consists of circular saw segments, a circular saw ring or finishing knives. The finishing tool can be arranged pre-cutting or re-cutting in relation to the neighboring chopping knife, which is referred to in this context as "front-side chopping knife 11. The pre-cutting sizing knives prevent tears from the front-side chopping knife from continuing into the remaining wood surface the relatively uneven wooden surface produced on the front cleavers.
Wegen des unvermeidbaren Verschleißes müssen die Schlichtmesser und die Hackmesser regelmäßig ausgewechselt werden. Die hierfür erforderliche, verhältnismäßig lange Betriebsunterbrechung stellt einen schwerwiegenden Nachteil beim Einsatz derartiger Werkzeugköpfe dar.Because of the unavoidable wear, the finishing knives and the cleaver have to be replaced regularly. The relatively long required for this Business interruption is a serious disadvantage when using such tool heads.
Bei einem bekannten gattungsgleichen Werkzeugkopf (DE 28 50 264 AI) ist es bekannt, ein Schlichtwerkzeug auswechselbar am Werkzeugkopf-Grundkörper zu befestigen. Die Hackmesser und insbesondere die einem erhöhten Verschleiß unterworfenen stirnseitigen Hackmesser müssen jedoch gesondert ausgewechselt werden.In a known tool head of the same type (DE 28 50 264 AI), it is known to attach a finishing tool to the main body of the tool head in an exchangeable manner. However, the chopping knives and in particular the end chopping knives which are subject to increased wear and tear must be replaced separately.
Aufgabe der Erfindung ist es daher, einen Werkzeugkopf der eingangs genannten Gattung so auszubilden, daß die durch den unvermeidbaren Werk2eugverschleiß bedingten Betriebsunterbrechungen weitgehend verringert werden.The object of the invention is therefore to design a tool head of the type mentioned at the outset in such a way that the interruptions in operation caused by the unavoidable wear and tear on the tool are largely reduced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das stirnseitige Hackmesser und das Schlichtwerkzeug an einem gemeinsamen Werkzeugträger angebracht sind, der auswechselbar am Werkzeugkopf-Grundkörper befestigt ist.This object is achieved in that the front cleaver and the finishing tool are attached to a common tool carrier, which is attached to the main body of the tool head in an exchangeable manner.
Damit wird das Auswechseln der Schlichtwerkzeuge und der stirnseitigen Hackmesser jeder Hackmessergruppe wesentlich vereinfacht und erleichtert. Es genügt, den Werkzeugträger vom Werkezugkopf-Grundkörper zu lösen und gegen einen neuen Werkzeugträger auszutauschen, dessen Werkzeuge bereits voreingestellt sind, so daß eine Einstellung der Werkzeugschneiden im montierten Zustand am Werkzeugkopf nicht mehr erforderlich ist. Die hierfür erforderliche Betriebsunterbrechung kann auf Maschinenstillstandszeiten von wenigen Minuten reduziert werden, so daß ein Werkzeugwechsel nicht nur am Schichtende, sondern auch während einer laufenden Schicht ohne wesentliche Unterbrechungen möglich ist.This significantly simplifies and simplifies the replacement of the finishing tools and the front cleaver of each cleaver group. It is sufficient to detach the tool carrier from the tool head base body and replace it with a new tool carrier, the tools of which are already preset, so that an adjustment of the tool cutting edges in the assembled state on the tool head is no longer necessary. The interruption in operation required for this can be reduced to machine downtimes of a few minutes, so that a tool change is possible not only at the end of the shift, but also during an ongoing shift without significant interruptions.
Hierbei wurde die Erkenntnis ausgenutzt, daß nicht nur die Schlichtwerkzeuge, sondern auch die stirnseitigen Hackmesser dem größten Werkzeugverschleiß unterliegen, weil diese Werkzeuge bei jeder vorkommenden Form der Holzstämme ständig im Eingriff sind. Dagegen sind die axial weiter von der Stirnseite zurückgesetzten Hackmesser nicht ständig im Eingriff, so daß deren Verschleiß wesentlich geringer ist. Deshalb können diese weiteren Hackmesser unmittelbar am Werkzeugkopf-Grundkörper befestigt sein.Here, the knowledge was exploited that not only the finishing tools, but also the front cleavers are subject to the greatest tool wear, because these tools are constantly engaged in every type of log. In contrast, the chopping knives axially further back from the end face are not constantly engaged, so that their wear is significantly less. Therefore, these additional chopping knives can be attached directly to the main body of the tool head.
In Abhängigkeit von der Gestaltung der Schlichtwerkzeuge kann der Werkzeugträger ein Ringsegment oder ein Ring sein. Wenn als Schlichtwerkzeuge Kreissägensegmente verwendet werden, denen üblicherweise jeweils eine Gruppe von Hackmessern zugeordnet ist, dann ist es vorteilhaft, den Werkzeugträger als Ringsegment auszuführen, der an seinem vorauslaufenden Ende das stirnseitige Hackmesser und an seiner Stirnfläche als Schlichtwerkzeug das Kreissägen-Ringsegment trägt.Depending on the design of the finishing tools, the tool carrier can be a ring segment or a ring. If circular saw segments are used as finishing tools, to which a group of chopping knives is usually assigned, then it is advantageous to design the tool carrier as a ring segment that carries the front-side cleaver at its leading end and the circular saw ring segment on its end face as a finishing tool.
Wenn dagegen das Schlichtwerkzeug als Kreissägenring ausgeführt ist, dann wird zweckmäßigerweise auch der Werkzeugträger als Ring ausgeführt.If, on the other hand, the finishing tool is designed as a circular saw ring, then the tool carrier is also advantageously designed as a ring.
Gemäß einer besonders bevorzugten Ausführung der Erfindung ist vorgesehen, daß der Werkzeugträger mittels Schnellspanneinrichtungen am Werkzeugkopf-Grundkörper befestigt ist. Diese Schnellspanneinrichtungen ermöglichen es, den Werkzeugwechsel besonders schnell durchzuführen, so daß dadurch die erforderlichenAccording to a particularly preferred embodiment of the invention, it is provided that the tool carrier is fastened to the main body of the tool head by means of quick-release devices. These quick-action clamping devices make it possible to carry out the tool change particularly quickly, so that the required ones are thereby
Maschinenstillstandszeiten ganz wesentlich reduziert werden.Machine downtimes can be reduced significantly.
Vorzugsweise weist die Schnellspanneinrichtung mindestens einen vom Werkzeugträger vorspringenden, achsparallelen Spannzapfen auf, der in eine Spannbohrung des Werkzeugkopf-Grundkörpers ragt und dort jeweils mit einer Spannvorrichtung in Eingriff steht. Konstruktiv besonders günstig ist es, die Spannzapfen auch in den Spannbohrungen zu zentrieren.The quick-action clamping device preferably has at least one axially parallel clamping pin projecting from the tool carrier, which projects into a clamping bore of the main tool head body and is in each case in engagement with a clamping device. It is particularly favorable in terms of design to center the clamping pins in the clamping bores.
Anstelle der Verwendung von Schnellspanneinrichtungen ist es auch möglich, den Werkzeugträger am Werkzeugkopf- Grundkörper anzuschrauben. Dadurch wird der konstruktive Aufwand gegenüber einer Schnellspanneinrichtung verringert, wobei die Werkzeugwechselzeiten immer noch verhältnismäßig kurz sind.Instead of using quick-action clamping devices, it is also possible to screw the tool carrier onto the tool head base body. This reduces the design effort compared to a quick-action clamping device, the tool change times still being relatively short.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the invention are the subject of further dependent claims.
Nachfolgend werden Ausführungsbeispiele der Erfindung näher erläutert, die in der Zeichnung dargestellt sind. Es zeigt:Exemplary embodiments of the invention are illustrated below, which are shown in the drawing. It shows:
Fig. 1 in räumlicher Darstellungsweise einen Werkzeugkopf eines Profilzerspaners, wobei einer der Werkzeugträger im abgenommenen Zustand dargestellt ist und ein zentraler Führungsteller des Werkzeugkopfes der einfacheren Darstellung halber weggelassen ist,1 a spatial representation of a tool head of a profile chipper, one of the tool carriers being shown in the removed state and a central guide plate of the tool head being omitted for the sake of simplicity of illustration,
Fig. 2 einen vergrößerten Teil-Radialschnitt des Werkzeugkopfes nach Fig. 1 mit angesetzter Betätigungseinrichtung für eine Schnellspanneinrichtung undFig. 2 is an enlarged partial radial section of the tool head of FIG. 1 with an attached actuator for a quick release device and
Fig. 3 und 4 abgewandelte Ausführungsformen jeweils in einem Teil-Radialschnitt entsprechend der Fig. 2.3 and 4 modified embodiments each in a partial radial section corresponding to FIG. 2nd
Der in Fig. 1 dargestellte Werkzeugkopf eines Profilzerspaners weist einen an seinem Umfang im wesentlichen kegelstumpfförraigen Werkzeugkopf-Grundkörper 1 auf, der mit einer (nicht dargestellten) Antriebswelle verbunden ist und die Werkzeuge trägt, um die seitlichen Segmente eines am Werkzeugkopf entlangbewegten Holzstammes zu Nutzspänen zu verarbeiten. Am Umfang des Werkzeugkopfes sind drei Gruppen von jeweils drei Hackmessern 2 und 3 angebracht, wobei jede Gruppe aus einem stirnseitigen Hackmesser 2 und zwei weiteren, demgegenüber axial gestaffelt zurückgesetzten Hackmessern 3 besteht.The tool head of a profile chipper shown in FIG. 1 has a tool head base body 1 which is essentially frustoconical on its circumference and which is connected to a drive shaft (not shown) and carries the tools around the lateral segments of a log which is moved along the tool head to process into chips. On the circumference of the tool head, three groups of three chopping knives 2 and 3 are attached, each group consisting of a front-side chopping knife 2 and two further chopping knives 3 which are axially staggered.
Stirnseitig sind am Werkzeugkopf als Schlichtwerkzeuge zum Schlichten der erzeugten Holzfläche drei Kreissägen- Ringsegmente 4 angebracht.At the end of the tool head, three circular saw ring segments 4 are attached as finishing tools for finishing the wooden surface.
Jeweils das stirnseitige Hackmesser 2 jeder Gruppe und jeweils eines der Kreissägen-Ringsegmente 4 als Schlichtwerkzeug sind an einem gemeinsamen Werkzeugträger 5 angebracht, der bei dem dargestellten Ausführungsbeispiel als Ringsegment ausgeführt ist. Der Werkzeugträger 5 ist lösbar und auswecheselbar an der Stirnseite des Werkzeugkopf-Grundkörpers 1 aufgenommen. Anstelle der dargestellten Ausführung kann der Werkzeugträger 5 auch als Ring ausgeführt sein.In each case the front cleaver 2 of each group and in each case one of the circular saw ring segments 4 as a finishing tool are attached to a common tool carrier 5, which is designed as a ring segment in the exemplary embodiment shown. The tool carrier 5 is detachably and exchangeably received on the end face of the tool head base body 1. Instead of the embodiment shown, the tool carrier 5 can also be designed as a ring.
Wie man aus Fig. 2 erkennt, ist der Werkzeugträger 5 mittels Schnellspanneinrichtungen 6 am Werkzeugkopf- Grundkörper 1 befestigt. An jedem Werkzeugträger 5 ist in zwei parallel zur Drehachse 7 des Werkzeugkopfes verlaufenden Bohrungen 8 jeweils ein achsparalleler Spannzapfen 9 aufgenommen, der über einen Flansch 10 mittels Schrauben 11 am Werkzeugträger 5 befestigt ist. Befestigungsschrauben 12 für das Kreissägen-Ringsegment 4 sind stirnseitig in den Spannzapfen 9 eingeschraubt.As can be seen from FIG. 2, the tool carrier 5 is fastened to the tool head base body 1 by means of quick-release devices 6. On each tool carrier 5, an axially parallel clamping pin 9 is received in two bores 8 running parallel to the axis of rotation 7 of the tool head, which is fastened to the tool carrier 5 by means of screws 11 via a flange 10. Fastening screws 12 for the circular saw ring segment 4 are screwed into the front of the clamping pin 9.
Die beiden Spannzapfen 9 jedes Werkzeugträgers 5 ragen in stirnseitige Spannbohrungen 13 des Werkzeugträger- Grundkörpers 1, die jeweils mit einer Büchse 14 versehen sind. Auf diese Weise werden die Spannzapfen 9 und damit auch die Werkzeugträger 5 in den Spannbohrungen 13 zentriert. Jeder Spannzapfen 9 weist einen verdickten Spannkopf 15 auf, der von einem (nicht dargestellten) Halteelement einer Spannvorrichtung 16 hintergriffen wird. Die Spannvorrichtung 16 ist in einen erweiterten Fortsatz 17 der Spannbohrung 13 eingesetzt. Es handelt sich beispielsweise um eine druckmittelbetätigte Spannvorrichtung 16, wie sie aus dem Prospekt "Innovative Andock- und Spannsysteme" der CyTec Zylindertechnik GmbH bekannt und auf dem Markt verfügbar sind. Das den Spannkopf 15 hintergreifende Halteelement einer solchen Spannvorrichtung 16 ist eine druckmittelbetätigte, im Spannzustand auch drucklos selbsthemmende Spannzange. Die Druckmittelzufuhr zur Betätigung der Spannvorrichtung 16 zum Spannen und Lösen erfolgt über Kanäle 18, 19, die an der Stirnseite des Werkzeugkopf-Grundkörpers 1 an einem Druckmittel-Kupplungsanschluß 20 münden. Stattdessen können die Kanäle 18, 19 beispielsweise auch durch die Antriebswelle des Messerkopfes verlaufen.The two clamping pins 9 of each tool carrier 5 protrude into the front clamping holes 13 of the tool carrier base body 1, which are each provided with a bush 14. In this way, the clamping pins 9 and thus also the tool carrier 5 are centered in the clamping bores 13. Each clamping pin 9 has a thickened clamping head 15 which is engaged behind by a (not shown) holding element of a clamping device 16. The clamping device 16 is inserted into an extended extension 17 of the clamping bore 13. It is, for example, a pressure medium-operated tensioning device 16, as is known from the "Innovative Docking and Clamping Systems" brochure from CyTec Cylinder Technology GmbH and is available on the market. The holding element of such a clamping device 16 engaging behind the clamping head 15 is a pressure-medium-operated collet which is also self-locking in the clamping state and is pressure-free. The pressure medium supply for actuating the clamping device 16 for clamping and releasing takes place via channels 18, 19, which open at the end face of the tool head base body 1 at a pressure medium coupling connection 20. Instead, the channels 18, 19 can also run through the drive shaft of the cutter head, for example.
Bei dem dargestellten Ausführungsbeispiel ist hierzu ein für alle Spannvorrichtungen 16 des Werkzeugkopfes gemeinsamer Anschlußring 21 vorgesehen, der stirnseitig am Werkzeugkopf-Grundkörper 1 befestigt ist und die Mündungen der Kanäle 18, 19 überdeckt. In eine Anschlußbohrung 22 des Anschlußrings 21 ist ein Versorgungszapfen 23 einsetzbar und druckdicht anschließbar, durch den das zur Betätigung der Spannvorrichtung 16 benötigte Druckmittel zu- und abgeführt wird. Eine an der Stirnseite des Werkzeugkopfes drehbar gelagerte Stützscheibe 24 weist eine Durchgangsbohrung 25 auf, durch die der Versorgungszapfen 23 bis zur Anschlußbohrung 22 eingeführt werden kann.In the exemplary embodiment shown, a connection ring 21 which is common to all clamping devices 16 of the tool head is provided for this purpose, which is fastened on the end face to the tool head base body 1 and covers the mouths of the channels 18, 19. In a connection bore 22 of the connection ring 21, a supply pin 23 can be inserted and connected in a pressure-tight manner, through which the pressure medium required for actuating the tensioning device 16 is supplied and discharged. A support disk 24, which is rotatably mounted on the end face of the tool head, has a through bore 25 through which the supply pin 23 can be inserted up to the connection bore 22.
Bei dem in Fig. 3 dargestellten, abgewandelten Ausführungsbeispiel ist die in Fig. 2 gezeigte druckmittelbetätigte Spannvorrichtung 16 durch einen in die Spannbohrung 13 und deren Fortsatz 17 eingesetzten Stufenbolzen 26 ersetzt, der einen stirnseitig aus dem Werkzeugkopf-Grundkörper 1 herausragenden Zentrierzapfen 27 aufweist. Mittels der Befestigungsschraube 12 des Kreissägen-Ringsegments 4 ist der Werkzeugträger 5 am Zentrierzapfen 27 angeschraubt, der zentrierend in die Bohrung 8 des Werkzeugträgers 5 ragt, wobei ein Distanzstück 27a untergelegt ist.In the modified exemplary embodiment shown in FIG. 3, the pressure-medium-operated tensioning device 16 shown in FIG. 2 is inserted into the tensioning bore 13 and its extension 17 Stepped bolt 26 replaced, which has a centering pin 27 protruding from the end of the tool head base body 1. By means of the fastening screw 12 of the circular saw ring segment 4, the tool carrier 5 is screwed onto the centering pin 27, which projects centering into the bore 8 of the tool carrier 5, a spacer 27a being placed underneath.
Das in Fig. 4 dargestellte Ausführungsbeispiel unterscheidet sich von dem Ausführungsbeispiel nach Fig. 3 nur dadurch, daß anstelle des Kreissägen-Ringsegments 4 als Schlichtwerkzeug ein oder mehrere Schlichtmesser 4' am Werkzeugträger 5 angebracht ist bzw. sind.The exemplary embodiment shown in FIG. 4 differs from the exemplary embodiment according to FIG. 3 only in that, instead of the circular saw ring segment 4 as a finishing tool, one or more finishing knives 4 'are attached to the tool carrier 5.
Allen dargestellten Ausführungsbeispielen ist gemeinsam, daß die Werkzeugträger 5 mit den daran angebrachten Kreissägen-Ringsegmenten 4 bzw. Schlichtmessern 4' und den stirnseitigen Hackmessern 2 nach einem Werkzeugverschleiß in einfacher Weise und rasch ausgewechselt werden können. Hierzu werden die Spannvorrichtungen 16 bzw. - bei der Ausführung nach den Fig. 3 und 4 - die Befestigungsschrauben 12 gelöst und der Werkzeugträger 5 mit den verschlissenen Werkzeugen wird abgenommen. Ein neuer Werkzeugträger 5 der scharfe und voreingetellte Werkzeuge 2 und 4 bzw. 4' trägt, wird auf den Werkzeugkopf-Grundkörper 1 aufgesetzt, zentriert und gespannt, so daß der Werkzeugkopf sofort wieder einsatzbereit ist. Alle für das Auswechseln des Werkzeugträgers 5 erforderlichen Maßnahmen können von der Stirnseite des Werkzeugkopfes her durchgeführt werden.All of the exemplary embodiments shown have in common that the tool carriers 5 with the circular saw ring segments 4 or finishing knives 4 ′ and the end chopping knives 2 attached to them can be replaced quickly and easily after tool wear. For this purpose, the clamping devices 16 or - in the embodiment according to FIGS. 3 and 4 - the fastening screws 12 are loosened and the tool carrier 5 with the worn tools is removed. A new tool holder 5 carrying sharp and preset tools 2 and 4 or 4 'is placed on the tool head base body 1, centered and clamped so that the tool head is immediately ready for use again. All of the measures required for replacing the tool carrier 5 can be carried out from the front of the tool head.
Die mit der Anmeldung eingereichten Ansprüche schließen die Geltendmachung eines darüber hinausgehenden Schutzes im Rahmen des gesamten Inhalts der Anmeldung nicht aus. Die Rückbeziehungen der Unteransprüche weisen auf die weitere Ausgestaltung von Merkmalen des Hauptanspruchs hin; sie stellen jedoch keinen Verzicht auf die Geltendmachung eines selbständigen Schutzes für die Merkmale der Unteransprüche dar. Auch zunächst nur in der Beschreibung offenbarte Merkmale können im Laufe des Verfahrens als erfindungswesentliche Merkmale zur Abgrenzung des Anmeldungsgegenstandes herangezogen werden, The claims submitted with the application do not preclude the assertion of further protection within the scope of the entire content of the application. The back relationships of the subclaims indicate the further design of features of the main claim; however, they do not waive that Assertion of independent protection for the features of the subclaims. Features initially only disclosed in the description can also be used in the course of the method as features essential to the invention for delimiting the subject of the application,

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Werkzeugkopf für Profilzerspaner zur Verarbeitung der seitlichen Segmente von Holzstämmen, mit einem drehangetriebenen Werkzeugkopf-Grundkörper, der an seinem Umfang mehrere Gruppen von Hackmessern und an seiner Stirnfläche mindestens ein Schlichtwerkzeug trägt, wobei jede Gruppe von Hackmessern mindestens ein stirnseitiges Hackmesser aufweist, dadurch gekennzeichnet, daß das stirnseitige Hackmesser (2) und das Schlichtwerkzeug (4, 4') an einem gemeinsamen Werkzeugträger (5) angebracht sind, der auswechselbar am Werkzeugkopf-Grundkörper (1) befestigt ist.1. Tool head for profile chippers for processing the lateral segments of logs, with a rotary driven tool head base body, which carries several groups of cleavers on its circumference and at least one finishing tool on its end face, each group of cleavers having at least one front cleaver, characterized in that that the front chopping knife (2) and the finishing tool (4, 4 ') are attached to a common tool carrier (5) which is attached to the tool head base body (1) in an exchangeable manner.
2. Werkzeugkopf nach Anspruch 1, dadurch gekennzeichnet, daß der Werkzeugträger (5) ein Ringsegment ist.2. Tool head according to claim 1, characterized in that the tool carrier (5) is a ring segment.
3. Werkzeugkopf nach Anspruch 1, dadurch gekennzeichnet, daß der Werkzeugträger (5) ein Ring ist.3. Tool head according to claim 1, characterized in that the tool carrier (5) is a ring.
4. Werkzeugkopf nach Anspruch 2, dadurch gekennzeichnet, daß jedes Ringsegment mindestens ein stirnseitiges Hackmesser (2) und an seiner Stirnfläche als Schlichtwerkzeug ein Kreissägen-Ringsegment (4) trägt.4. Tool head according to claim 2, characterized in that each ring segment carries at least one front cleaver (2) and a circular saw ring segment (4) on its end face as a finishing tool.
5. Werkzeugkopf nach Anspruch 4, dadurch gekennzeichnet, daß das stirnseitige Hackmesser (2) am vorauslaufenden Ende des Ringsegments angebracht ist.5. Tool head according to claim 4, characterized in that the front cleaver (2) is attached to the leading end of the ring segment.
6. Werkzeugkopf nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß der Werkzeugträger (5) mittels Schnellspanneinrichtungen (6) am Werkzeugkopf-Grundkörper (1) befestigt ist. 6. Tool head according to one of claims 1-5, characterized in that the tool carrier (5) by means of quick release devices (6) on the tool head base body (1) is attached.
7. Werkzeugkopf nach Anspruch 6, dadurch gekennzeichnet, daß die Schnellspanneinrichtung (6) mindestens einen vom Werkzeugträger (5) vorspringenden, achsparallelen Spannzapfen (9) aufweist, der in eine Spannbohrung (13) des Werkzeugkopf-Grundkörpers (1) ragt und dort jeweils mit einer Spannvorrichtung (16) in Eingriff steht.7. Tool head according to claim 6, characterized in that the quick-action clamping device (6) has at least one axially parallel clamping pin (9) projecting from the tool carrier (5), which projects into a clamping bore (13) of the tool head base body (1) and there in each case is in engagement with a tensioning device (16).
8. Werkzeugkopf nach Anspruch 7, dadurch gekennzeichnet, daß die Spannzapfen (9) in den Spannbohrungen (13) zentriert sind.8. Tool head according to claim 7, characterized in that the clamping pins (9) are centered in the clamping bores (13).
9. Werkzeugkopf nach Anspruch 7, dadurch gekennzeichnet, daß jeder Spannzapfen (9) einen Spannkopf (15) aufweist, der von einem Halteelement der Spannvorrichtung (16) hintergriffen wird.9. Tool head according to claim 7, characterized in that each clamping pin (9) has a clamping head (15) which is engaged by a holding element of the clamping device (16).
10. Werkzeugkopf nach Anspruch 9, dadurch gekennzeichnet, daß das Halteelement der Spannvorrichtung (16) eine druckmittelbetätigte, elektrisch oder mechanisch betätigte, im Spannzustand selbsthemmende Spannzange ist.10. Tool head according to claim 9, characterized in that the holding element of the clamping device (16) is a pressure medium-operated, electrically or mechanically operated, in the clamping state self-locking collet.
11. Werkzeugkopf nach Anspruch 10, dadurch gekennzeichnet, daß die Druckmittelzufuhr zu der Spannvorrichtung (16) über Kanäle (18, 19) erfolgt, die an der Stirnseite des Werkzeugkopf-Grundkörpers (1) an einem Druckmittel- Kupplungsanschluß (20) münden.11. Tool head according to claim 10, characterized in that the pressure medium supply to the clamping device (16) via channels (18, 19) takes place, which open on the end face of the tool head base body (1) at a pressure medium coupling connection (20).
12. Werkzeugkopf nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß der Werkzeugträger (5) am Werkzeugkopf-Grundkörper (1) angeschraubt ist.12. Tool head according to one of claims 1-5, characterized in that the tool carrier (5) is screwed onto the tool head base body (1).
13. Werkzeugkopf nach Anspruch 12, dadurch gekennzeichnet, daß der Werkzeugträger (5) an mindestens zwei aus den Spannbohrung (13) des Werkzeugkopf-Grundkörpers (1) herausragenden Zentrierzapfen (27) angeschraubt ist. 13. Tool head according to claim 12, characterized in that the tool carrier (5) is screwed to at least two from the clamping bore (13) of the tool head base body (1) projecting centering pin (27).
EP96907366A 1995-04-11 1996-03-06 Tool head for a shaping machine Expired - Lifetime EP0820369B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19513699A DE19513699C1 (en) 1995-04-11 1995-04-11 Tool head for profile cutter for timber
DE19513699 1995-04-11
PCT/EP1996/000946 WO1996032234A1 (en) 1995-04-11 1996-03-06 Tool head for a shaping machine

Publications (2)

Publication Number Publication Date
EP0820369A1 true EP0820369A1 (en) 1998-01-28
EP0820369B1 EP0820369B1 (en) 1998-11-11

Family

ID=7759463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907366A Expired - Lifetime EP0820369B1 (en) 1995-04-11 1996-03-06 Tool head for a shaping machine

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US (1) US5983967A (en)
EP (1) EP0820369B1 (en)
AT (1) ATE173191T1 (en)
CA (1) CA2218066C (en)
DE (2) DE19513699C1 (en)
DK (1) DK0820369T3 (en)
NO (1) NO974714L (en)
WO (1) WO1996032234A1 (en)

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Also Published As

Publication number Publication date
EP0820369B1 (en) 1998-11-11
WO1996032234A1 (en) 1996-10-17
NO974714L (en) 1997-10-13
DK0820369T3 (en) 1999-07-26
US5983967A (en) 1999-11-16
DE19513699C1 (en) 1996-04-25
DE59600814D1 (en) 1998-12-17
ATE173191T1 (en) 1998-11-15
NO974714D0 (en) 1997-10-10
CA2218066C (en) 2001-07-24
CA2218066A1 (en) 1996-10-17

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