EP0222728B1 - Apparatus for producing prismatic or pyramidal logs - Google Patents

Apparatus for producing prismatic or pyramidal logs Download PDF

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Publication number
EP0222728B1
EP0222728B1 EP86890263A EP86890263A EP0222728B1 EP 0222728 B1 EP0222728 B1 EP 0222728B1 EP 86890263 A EP86890263 A EP 86890263A EP 86890263 A EP86890263 A EP 86890263A EP 0222728 B1 EP0222728 B1 EP 0222728B1
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EP
European Patent Office
Prior art keywords
tree trunk
machining tools
movement
plates
guides
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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.)
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EP86890263A
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German (de)
French (fr)
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EP0222728A1 (en
Inventor
Johann Wolf
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Wolf Systembau GmbH
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Wolf Systembau GmbH
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    • 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
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B27B1/007—Methods for subdividing trunks or logs essentially involving sawing taking into account geometric properties of the trunks or logs to be sawn, e.g. curvature
    • 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
    • B27B29/00—Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines; Travelling trunk or log carriages

Definitions

  • the invention relates to a device for producing prismatic or truncated pyramid-shaped beams from tree trunks with at least two opposing machining tools for producing flat side surfaces on the tree trunk and with devices for controlled, mutually moving movement of the processing tools.
  • a device of this type can be found in DE-C 304 676, which, however, is primarily intended for trimming boards with cutting edges running at any angle.
  • the device for trimming tree trunks according to EP-A 217 784 is used to produce two adjoining, mutually perpendicular side surfaces, wherein prismatic or truncated pyramid-shaped beams can be produced in two work steps.
  • the possibly desired processing of a tree trunk only on two opposite side surfaces is not possible with this known device.
  • Trimming devices are also known (cf. DE-A 3 151 188 and 3 114 843 and AT-B 375 862) in which the trimming tools are adjustable transversely to the trunk axis. However, the trimming tools are adjusted in stages, whereby only surfaces parallel to the axis of the tree trunk can be generated.
  • the object of the invention is to provide a device of the type described in the introduction, which enables tree trunks to be trimmed in a straight line in a prismatic or truncated pyramid fashion in order to be able to process the beams thus produced into composite beams.
  • the areas of the beams obtained after trimming should be largely flat.
  • this object is achieved with a device of the type mentioned, which is characterized by a clamping device that holds the tree trunk stationary in several places from above and below, a guide device for the guided displacement of the processing tools along straight guide rails, the form an acute angle with the longitudinal axis of the receiving space for the tree trunk and extend on both sides of the receiving space, an adjusting device for adjusting the lateral distance of the guide rails at the beginning and end of the device and a drive device for the driven displacement of the processing tools.
  • prismatic bar means not only bars that are processed on four sides, but also bars that are only processed, i.e. have flat and parallel or angled surfaces, whereas the other two surfaces are unprocessed.
  • truncated pyramid-shaped bar used in this description also means bars that only have two converging, machined surfaces.
  • beams can be produced with the device according to the invention, in which there are non-machined areas between the machined surfaces.
  • the tree trunk to be processed is clamped and the processing tools are guided along two opposite sides of the tree trunk.
  • the device shown in FIGS. 1 to 5 comprises at both ends of the device essentially H-shaped trestles 1, which are connected to one another via longitudinal beams 2 and 3 to form a frame.
  • the supports 5 can be adjusted in height with the aid of a spindle drive 6.
  • On the supports 5 two lifting arms 7 and 8 are articulated, which can be pivoted by means of pressure medium motors 9 and 10.
  • the lifting arms 7 and 8 are used to place the tree trunk 4 and to remove a finished bar laterally.
  • hold-downs 11 acting on the tree trunk 4 from above are provided in the frame, and pressure medium motors 12 are provided for their actuation.
  • the hold-down devices 11 clamp the tree trunk 4 against the supports 5.
  • machining tools 13 and 14 are provided in the device, which in the exemplary embodiment shown are milling cutters 15 which engage on opposite sides of the tree trunk 4.
  • the processing tools 13 and 14 can be moved in guides 16 along the tree trunk 4, for which purpose the processing tools have shields 17 (FIG. 3).
  • Each shield 17 has two groove rollers 18 at the bottom, which run on a rib 19 of a T-shaped rail 20.
  • Each shield 17 further has a roller 21 which engages in a U-shaped rail 22 which is open at the bottom.
  • pull spindles 23 or, according to an embodiment not shown, rope or chain cap are provided.
  • the guides 16 are adjustable on L-profile rails 24, 25, which are attached to the frame, mounted. In order to be able to fix the guides 16 in the frame in the desired position, clamping screws 26 are provided.
  • 16 adjusting spindles 27 and 28 are provided at the ends of the guides, which can be actuated by means of hand cranks 29.
  • the guides 16 can be adjusted symmetrically to the axis 30 of the tree trunk 4 clamped in the frame, whereby in addition to an alignment of the guides 16 (production of prismatic beams) parallel to the axis 30, the guides 16 can also be aligned at an acute angle to the axis 30 so that truncated pyramid-shaped bars can be produced.
  • An embodiment of the device (not shown) is also conceivable, in which the guides 16 are fastened in the frame of the device parallel to the axis 30 of the tree trunk 4 and the processing tools 13 and 14 as they move along the tree trunk 4 to be processed, transverse to the longitudinal extension (axis 30 ) of the tree trunk 4 are adjusted in order to achieve the desired wedge-shaped processing course following the natural conicity of tree trunks.
  • the adjustment of the machining tools relative to the shields 17 carrying them can be controlled with the aid of position-dependent actuators (similar to FIG. 6) or with the aid of reduction gears which are driven, for example, by the tension spindle 23.
  • Another possibility is to drive the drives for transverse adjustment of the machining tools 13, 14 relative to their shields 17 via wheels that roll on the guides 16.
  • path measuring devices e.g. incremental encoders
  • the device according to the invention described with reference to FIGS. 1 to 5 enables the processing of large and thus heavy tree trunks while achieving precisely flat side surfaces. Adjustment of the processing tools to the desired wedge angle corresponding to the conicity of the tree trunk to be processed or to a position parallel to the tree axis can be carried out precisely and easily.
  • the device has a stable structure and requires little space.
  • the device shown in FIGS. 1 to 5 is to be used to produce a prismatic or truncated pyramid-shaped bar on four sides, then the tree trunk, which is first machined on two opposite sides, is rotated by 90 ° and the other two sides are trimmed in a further machining step
  • the ratio between the relative movement between the tree trunk and the processing tools for the transverse stroke of the processing tools can be set within limits and can be preselected, for example with the aid of index markings, and remains unchanged for the respectively selected work process, so that the resulting movement of the Machining tools against the tree trunk is a straight line.
  • this can be achieved in a simple manner in that markings made on both ends of the frame simplify the setting of the device in accordance with the bar thickness or the desired inclination thereof.

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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)
  • Milling Processes (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Herstellen von prismatischen oder pyramidenstumpfförmigen Balken aus Baumstämmen mit wenigstens zwei einander gegenüberliegenden zerspanenden Bearbeitungswerkzeugen zur Erzeugung von ebenen Seitenflächen am Baumstamm und mit Einrichtungen zur gesteuerten, aufeinanderzugehenden Bewegung der Bearbeitungswerkzeuge.The invention relates to a device for producing prismatic or truncated pyramid-shaped beams from tree trunks with at least two opposing machining tools for producing flat side surfaces on the tree trunk and with devices for controlled, mutually moving movement of the processing tools.

Eine Vorrichtung dieser Art ist der DE-C 304 676 zu entnehmen, die jedoch in erster Linie zum Beschneiden von Brettern mit in beliebigem Winkel verlaufenden Schnittkanten bestimmt ist.A device of this type can be found in DE-C 304 676, which, however, is primarily intended for trimming boards with cutting edges running at any angle.

Die Vorrichtung zum Besäumen von Baumstämmen gemäß der EP-A 217 784 dient zur Herstellung von zwei aneinandergrenzenden, zueinander senkrecht stehenden Seitenflächen, wobei in zwei Arbeitsgängen prismatische oder pyramidenstumpfförmige Balken erzeugt werden können. Die gegebenenfalls erwünschte Bearbeitung eines Baumstammes lediglich an zwei einander gegenüberliegenden Seitenflächen ist mit dieser bekannten Vorrichtung nicht möglich.The device for trimming tree trunks according to EP-A 217 784 is used to produce two adjoining, mutually perpendicular side surfaces, wherein prismatic or truncated pyramid-shaped beams can be produced in two work steps. The possibly desired processing of a tree trunk only on two opposite side surfaces is not possible with this known device.

Es sind weiters Besäumvorrichtungen bekannt (vgl. DE-A 3 151 188 und 3 114 843 und AT-B 375 862), bei denen die Besäumwerkzeuge quer zur Stammachse verstellbar sind. Die Verstellung der Besäumwerkzeuge erfolgt jedoch stufenweise, wobei stets nur zur Achse des Baumstammes parallele Flächen erzeugt werden können.Trimming devices are also known (cf. DE-A 3 151 188 and 3 114 843 and AT-B 375 862) in which the trimming tools are adjustable transversely to the trunk axis. However, the trimming tools are adjusted in stages, whereby only surfaces parallel to the axis of the tree trunk can be generated.

Aufgabe der Erfindung ist es eine Vorrichtung der einleitend geschilderten Art zu schaffen, die es ermöglicht, wahlweise Baumstämme prismatisch oder pyramidenstumpfförmig geradlinig zu besäumen, um die so erzeugten Balken zu Verbundträgern verarbeiten zu können. Dabei sollen die nach dem Besäumen erhaltenen Flächen der Balken weitgehend eben sein.The object of the invention is to provide a device of the type described in the introduction, which enables tree trunks to be trimmed in a straight line in a prismatic or truncated pyramid fashion in order to be able to process the beams thus produced into composite beams. The areas of the beams obtained after trimming should be largely flat.

Gemäß der Erfindung wird diese Aufgabe dadurch mit einer Vorrichtung der eingangs genannten Gattung gelöst, die gekennzeichnet ist durch eine Einspannvorrichtung, die den Baumstamm an mehreren Stellen von oben und unten her stationär festhält, eine Führungseinrichtung für das geführte Verschieben der Bearbeitungswerkzeuge entlang gerader Führungsschienen, die mit der Längsachse des Aufnahmeraumes für den Baumstamm einen spitzen Winkel einschließen und beiderseits des Aufnahmeraumes verlaufen, eine Einstellvorrichtung zum Einstellen des seitlichen Abstandes der Führungsschienen am Anfang und Ende der Vorrichtung und eine Antriebseinrichtung für das angetriebene Verschieben der Bearbeitungswerkzeuge.According to the invention, this object is achieved with a device of the type mentioned, which is characterized by a clamping device that holds the tree trunk stationary in several places from above and below, a guide device for the guided displacement of the processing tools along straight guide rails, the form an acute angle with the longitudinal axis of the receiving space for the tree trunk and extend on both sides of the receiving space, an adjusting device for adjusting the lateral distance of the guide rails at the beginning and end of the device and a drive device for the driven displacement of the processing tools.

An dieser Stelle wird darauf hingewiesen, daß mit dem Begriff "prismatischer Balken" nicht nur Balken gemeint sind, die an vier Seiten bearbeitet sind, sondern auch Balken, die nur zwei einander gegenüberliegende, bearbeitete, d.h. ebene und parallel oder im Winkel zueinander verlaufende Flächen besitzen, wogegen die beiden anderen Flächen unbearbeitet sind. Sinngemäß bedeutet der in dieser Beschreibung verwendete Begriff "pyramidenstumpfförmiger Balken" auch Balken, die nur zwei konvergierende, bearbeitete Flächen besitzen. Überdies sind mit der erfindungsgemäßen Vorrichtung Balken herstellbar, bei denen zwischen den bearbeiteten Flächen nicht bearbeitete Bereiche vorliegen.At this point, it is pointed out that the term "prismatic bar" means not only bars that are processed on four sides, but also bars that are only processed, i.e. have flat and parallel or angled surfaces, whereas the other two surfaces are unprocessed. The term "truncated pyramid-shaped bar" used in this description also means bars that only have two converging, machined surfaces. In addition, beams can be produced with the device according to the invention, in which there are non-machined areas between the machined surfaces.

Bei der erfindungsgemäßen Vorrichtung ist der zu bearbeitende Baumstamm eingespannt und die Bearbeitungswerkzeuge werden an zwei gegenüberliegenden Seiten des Baumstammes entlang geführt.In the device according to the invention, the tree trunk to be processed is clamped and the processing tools are guided along two opposite sides of the tree trunk.

Weitere Ausführungsformen der Erfindung sowie der mit der Erfindung erzielbare Fortschritt ergeben sich aus den Unteransprüchen und der nachstehenden Beschreibung eines Ausführungsbeispieles unter Bezug auf die angeschlossenen Zeichnungen. In diesen zeigt:

  • Fig. 1 eine Ausführungsform der erfindungsgemäßen Vorrichtung, bei welcher zwei einander gegenüberliegende Bearbeitungswerkzeuge längs eines stillstehenden Baumstammes bewegt werden, von einem Ende aus gesehen,
  • Fig. 2 die Führung eines Bearbeitungswerkzeuges der Vorrichtung aus Fig. 1,
  • Fig. 3 teilweise die Führung aus Fig. 2 in Seitenansicht,
  • Fig. 4 schematisch zwei Führungsbahnen in Draufsicht und
  • Fig. 5 die Vorrichtung aus Fig. 1 in Seitenansicht.
Further embodiments of the invention and the progress achievable with the invention result from the subclaims and the following description of an embodiment with reference to the attached drawings. In these shows:
  • 1 shows an embodiment of the device according to the invention, in which two mutually opposite machining tools are moved along a stationary tree trunk, seen from one end,
  • 2 shows the guidance of a processing tool of the device from FIG. 1,
  • 3 partially the guide of FIG. 2 in side view,
  • Fig. 4 shows schematically two guideways in plan view and
  • Fig. 5 shows the device of Fig. 1 in side view.

Die in den Fig. 1 bis 5 gezeigte Vorrichtung umfaßt an beiden Enden des Gerätes im wesentlichen H-förmige Böcke 1, die miteinander über Längsträger 2 und 3 zu einem Gestell verbunden sind. Zur Halterung eines Baumstammes 4 sind am Gestell mehrere Auflager 5 vorgesehen, auf welchen der Baumstamm 4 aufliegt. Die Auflager 5 sind mit Hilfe eines Spindeltriebes 6 höhenverstellbar. An den Auflagern 5 sind jeweils zwei Hebearme 7 und 8 angelenkt, die mit Hilfe von Druckmittelmotoren 9 und 10 verschwenkbar sind. Die Hebearme 7 und 8 dienen zum Auflegen des Baumstammes 4 und zum seitlichen Entnehmen eines fertig bearbeiteten Balkens. Weiters sind im Gestell von oben auf den Baumstamm 4 einwirkende Niederhalter 11 vorgesehen, zu deren Betätigung jeweils Druckmittelmotoren 12 vorgesehen sind. Die Niederhalter 11 spannen den Baumstamm 4 gegen die Auflager 5.The device shown in FIGS. 1 to 5 comprises at both ends of the device essentially H-shaped trestles 1, which are connected to one another via longitudinal beams 2 and 3 to form a frame. To support a tree trunk 4, several supports 5 are provided on the frame, on which the tree trunk 4 rests. The supports 5 can be adjusted in height with the aid of a spindle drive 6. On the supports 5 two lifting arms 7 and 8 are articulated, which can be pivoted by means of pressure medium motors 9 and 10. The lifting arms 7 and 8 are used to place the tree trunk 4 and to remove a finished bar laterally. Furthermore, hold-downs 11 acting on the tree trunk 4 from above are provided in the frame, and pressure medium motors 12 are provided for their actuation. The hold-down devices 11 clamp the tree trunk 4 against the supports 5.

Wie insbesondere aus Fig. 1 ersichtlich, sind in der Vorrichtung zwei einander gegenüberliegende Bearbeitungswerkzeuge 13 und 14 vorgesehen, die im gezeigten Ausführungsbeispiel Fräsen 15 sind, die an gegenüberliegenden Seiten des Baumstammes 4 angreifen. Die Bearbeitungswerkzeuge 13 und 14 sind in Führungen 16 entlang des Baumstammes 4 verschiebbar, wozu die Bearbeitungswerkzeuge Schilde 17 (Fig. 3) aufweisen. Jedes Schild 17 besitzt unten zwei Nutenrollen 18, die auf einer Rippe 19 einer T-Profilschiene 20 laufen. Jedes Schild 17 besitzt weiters oben eine Rolle 21, die in eine nach unten offene, U-profilförmige Schiene 22 eingreift. Zur Bewegung der Schilde 17 und damit der Bearbeitungswerkzeuge 13 und 14 sind beispielsweise Zugspindeln 23 oder, gemäß einer nicht gezeigten Ausführungsform, Seil- bzw. Kettenspille vorgesehen. Die Führungen 16 sind verstellbar an L-Profilschienen 24, 25, die am Gestell befestigt sind, montiert. Um die Führungen 16 im Gestell in der gewünschten Lage festlegen zu können, sind Klemmschrauben 26 vorgesehen.As can be seen in particular from FIG. 1, two mutually opposite machining tools 13 and 14 are provided in the device, which in the exemplary embodiment shown are milling cutters 15 which engage on opposite sides of the tree trunk 4. The processing tools 13 and 14 can be moved in guides 16 along the tree trunk 4, for which purpose the processing tools have shields 17 (FIG. 3). Each shield 17 has two groove rollers 18 at the bottom, which run on a rib 19 of a T-shaped rail 20. Each shield 17 further has a roller 21 which engages in a U-shaped rail 22 which is open at the bottom. To move the shields 17 and thus the processing tools 13 and 14, for example, pull spindles 23 or, according to an embodiment not shown, rope or chain cap are provided. The guides 16 are adjustable on L-profile rails 24, 25, which are attached to the frame, mounted. In order to be able to fix the guides 16 in the frame in the desired position, clamping screws 26 are provided.

Wie Fig. 4 zeigt, sind an den Enden der Führungen 16 Stellspindeln 27 und 28 vorgesehen, die mit Hilfe von Handkurbeln 29 betätigt werden können. Auf diese Weise können die Führungen 16 symmetrisch zur Achse 30 des im Gestell eingespannten Baumstammes 4 verstellt werden, wobei neben einer zur Achse 30 parallelen Ausrichtung der Führungen 16 (Herstellung prismatischer Balken) die Führungen 16 auch in einem spitzen Winkel zur Achse 30 ausgerichtet werden können, so daß pyramidenstumpfförmige Balken erzeugt werden können.As shown in FIG. 4, 16 adjusting spindles 27 and 28 are provided at the ends of the guides, which can be actuated by means of hand cranks 29. In this way, the guides 16 can be adjusted symmetrically to the axis 30 of the tree trunk 4 clamped in the frame, whereby in addition to an alignment of the guides 16 (production of prismatic beams) parallel to the axis 30, the guides 16 can also be aligned at an acute angle to the axis 30 so that truncated pyramid-shaped bars can be produced.

An Stelle der gezeigten, gegenläufige Gewindeabschnitte aufweisenden Spindeln 27 und 28 können zum Verstellen der Führungen 16 auch andere Vorrichtungen, z.B. Druckmittelzylinder vorgesehen sein.Instead of the spindles 27 and 28 having opposite thread sections shown, other devices, e.g. Pressure cylinder can be provided.

Es ist auch eine nicht gezeigte Ausführungsform der Vorrichtung denkbar, bei der die Führungen 16 im Gestell der Vorrichtung parallel zur Achse 30 des Baumstammes 4 befestigt sind und die Bearbeitungswerkzeuge 13 und 14 bei ihrer Bewegung entlang des zu bearbeitenden Baumstammes 4 quer zur Längserstreckung (Achse 30) des Baumstammes 4 verstellt werden, um den gewünschten keilförmigen, der natürlichen Konizität von Baumstämmen folgenden Bearbeitungsverlauf zu erzielen. Die Verstellung der Bearbeitungswerkzeuge gegenüber den sie tragenden Schilden 17 kann mit Hilfe von wegabhängig gesteuerten Stellmotoren (ähnlich Fig. 6) oder mit Hilfe von Untersetzungsgetrieben gesteuert werden, die beispielsweise von der Zugspindel 23 angetrieben werden. Eine weitere Möglichkeit besteht darin, die Antriebe zur Querverstellung der Bearbeitungswerkzeuge 13, 14 gegenüber ihren Schilden 17 über Räder, die an den Führungen 16 abrollen, anzutreiben. Schließlich besteht eine Möglichkeit darin, den von den Bearbeitungswerkzeugen 13 und 14 entlang des Baumstammes 4 zurückgelegten Weg über Wegmeßeinrichtungen (z.B. Inkrementalgeber) zu erfassen und die Bearbeitungswerkzeuge quer zur Längserstreckung des Baumstammes 4 bzw. quer zu ihrer Bewegungsrichtung in Abhängigkeit vom zurückgelegten Weg zu verstellen.An embodiment of the device (not shown) is also conceivable, in which the guides 16 are fastened in the frame of the device parallel to the axis 30 of the tree trunk 4 and the processing tools 13 and 14 as they move along the tree trunk 4 to be processed, transverse to the longitudinal extension (axis 30 ) of the tree trunk 4 are adjusted in order to achieve the desired wedge-shaped processing course following the natural conicity of tree trunks. The adjustment of the machining tools relative to the shields 17 carrying them can be controlled with the aid of position-dependent actuators (similar to FIG. 6) or with the aid of reduction gears which are driven, for example, by the tension spindle 23. Another possibility is to drive the drives for transverse adjustment of the machining tools 13, 14 relative to their shields 17 via wheels that roll on the guides 16. Finally, there is a possibility to record the path covered by the processing tools 13 and 14 along the tree trunk 4 via path measuring devices (e.g. incremental encoders) and to adjust the processing tools transversely to the longitudinal extent of the tree trunk 4 or transversely to their direction of movement depending on the path covered.

Gleich auf welche Weise die Querbewegung der Bearbeitungswerkzeuge 13, 14 erfolgt, ist in jedem Fall gewährleistet, daß eine, bezogen auf die Längserstreckung (Achse 30) des Baumstammes 4, geradlinige Bewegung resultiert.Regardless of the manner in which the transverse movement of the processing tools 13, 14 takes place, it is guaranteed in any case that a linear movement results with respect to the longitudinal extension (axis 30) of the tree trunk 4.

Die anhand der Fig. 1 bis 5 beschriebene erfindungsgemäße Vorrichtung ermöglicht die Bearbeitung auch großer und damit schwerer Baumstämme unter Erzielung genau ebener Seitenflächen. Dabei ist eine Einstellung der Bearbeitungswerkzeuge auf den gewünschten, der Konizität des zu bearbeitenden Baumstammes entsprechenden Keilwinkel oder auch auf eine parallele Lage zur Baumachse genau und einfach durchführbar. Die Vorrichtung weist einen stabilen Aufbau auf und hat einen geringen Platzbedarf.The device according to the invention described with reference to FIGS. 1 to 5 enables the processing of large and thus heavy tree trunks while achieving precisely flat side surfaces. Adjustment of the processing tools to the desired wedge angle corresponding to the conicity of the tree trunk to be processed or to a position parallel to the tree axis can be carried out precisely and easily. The device has a stable structure and requires little space.

Wenn mit der in den Fig. 1 bis 5 gezeigten Vorrichtung ein auf vier Seiten bearbeiteter prismatischer oder pyramidenstumpfförmiger Balken hergestellt werden soll, dann wird der zunächst auf zwei gegenüberliegenden Seiten bearbeitete Baumstamm um 90° gedreht und in einem weiteren Bearbeitungsschritt werden die beiden übrigen Seiten besäumtIf the device shown in FIGS. 1 to 5 is to be used to produce a prismatic or truncated pyramid-shaped bar on four sides, then the tree trunk, which is first machined on two opposite sides, is rotated by 90 ° and the other two sides are trimmed in a further machining step

Bei der erfindungsgemäßen Vorrichtung ist es von Vorteil, wenn das Verhältnis zwischen Relativbewegung zwischen dem Baumstamm und den Bearbeitungswerkzeugen zum Querhub der Bearbeitungswerkzeuge in Grenzen einstellbar und beispielsweise mit Hilfe von Indexmarkierungen vorwählbar ist und für den jeweils gewählten Arbeitsvorgang unverändert bleibt, so daß die resultierende Bewegung der Bearbeitungswerkzeuge gegenüber dem Baumstamm eine geradlinige ist. Bei der Ausführungsform gemäß Fig. 1 kann dies in einfacher Weise dadurch erreicht werden, daß an beiden Enden des Gestells angebrachte Markierungen die Einstellung der Vorrichtung entsprechend der Balkenstärke bzw. der gewünschten Neigung derselben vereinfachen.In the device according to the invention it is advantageous if the ratio between the relative movement between the tree trunk and the processing tools for the transverse stroke of the processing tools can be set within limits and can be preselected, for example with the aid of index markings, and remains unchanged for the respectively selected work process, so that the resulting movement of the Machining tools against the tree trunk is a straight line. In the embodiment according to FIG. 1, this can be achieved in a simple manner in that markings made on both ends of the frame simplify the setting of the device in accordance with the bar thickness or the desired inclination thereof.

Claims (17)

1. Apparatus for producing prismatic or frusto- conical logs from tree trunks with two or more opposed cutting machining tools (13, 14) for producing plane side faces on the tree trunk and with devices for controlled movement of the machining tools towards each other, characterised by
- a clamping apparatus (5, 11) which keeps the tree trunk stationary at several points from above and below,
- a guide device (16) for guided displacement of the machining tools (13, 14) along straight guide rails (20, 22) which form an acute angle with the longitudinal axis of the space for holding the tree trunk and extend on both sides of the space,
- an adjuster (27, 28, 29) for adjusting the lateral spacing of the guide rails at the beginning and end of the apparatus, and
- a drive mechanism (23) for driven displacement of the machining tools.
2. Apparatus according to claim 1, characterised in that the clamping apparatuses are designed as supports (5) which are applied to the tree trunk (4) from below and are adjustable in height to a limited extent, and hold-down devices (11) applied to the tree trunk (4) from above.
3. Apparatus according to claim 1 or 2, characterised in that pivotable lifting arms (7, 8) are coupled by means of fluid-driven motors (9, 10) or the like to the supports (5) which are applied to the tree trunk (4) from below, wherein these lifting arms (7, 8) are designed as supports for depositing or removing a tree trunk (4).
4. Apparatus according to claim 1, characterised in that the guides (16) for the machining tools (13, 14) are displaceable symmetrically from both sides to and from the axis (30) of the tree trunk (4) (Fig. 4).
5. Apparatus according to claim 4, characterised in that for displacement of the guides (16) at their ends are provided adjusting spindles (27, 28) with oppositely directed threaded sections for which nuts are disposed on the guides (16).
6. Apparatus according to claim 4 or 5, characterised in that the guides (16) after adjustment thereof in the desired inclined position to the axis (30) of the tree trunk (4) can be fixed relative to the frame (1, 2, 3) of the apparatus with fasteners distributed over their length, wherein the fasteners are preferably designed as clamping screws (26).
7. Apparatus according to any of claims 1 to 6, characterised in that each machining tool (13, 14) is mounted on a plate (17) which comprises rollers (18, 21) at the top and bottom by which it is slidable in guide rails (20, 22) mounted one above the other.
8. Apparatus according to claim 7, characterised in that the lower rollers are grooved rollers (18) which roll over a rib (19) of a T-section rail (20), and at least one upper roller (21) is provided which engages from below in a U-section rail (22).
9. Apparatus according to claim 7 or 8, characterised in that traction spindles (23) or cables or chains are provided for movement of the plates (17) with the machining tools (13, 14) along the guides (16).
10. Apparatus according to any of claims 7 to 9, characterised in that the machining tools (13, 14) are displaceable with their guides (20, 22) perpendicularly to the axis (30) of the tree trunk (4).
11. Apparatus according to any of claims 1 to 3, characterised in that the machining tools (13, 14) are displaceable relative to plates (17) carrying them by means of adjusting spindles, fluid-driven motors or the like.
12. Apparatus according to claim 11, characterised in that transverse movement of the machining tools (13, 14) relative to the plates (17) carrying them is directly proportional to movement of the plates in the longitudinal direction of the tree trunk (4) to be machined.
13. Apparatus according to claim 11 or 12, characterised in that movement of the machining tools (13,
14) perpendicularly to the plates (17) carrying them is carried out by drive means which are in turn controllable by the movement of the plates relative to the frame (1, 2, 3) of the apparatus.
14. Apparatus according to any of claims 11 to 13, characterised in that the drive means for movement of the machining tools are designed as speed reduction gears driven by the drive spindles (23) for the plates (17).
15. Apparatus according to any of claims 10 to 13, characterised in that the drive means for movement of the machining tools (13, 14) consist of rollers which roll over the guides (20, 22) for the plates (17).
16. Apparatus according to any of claims 10 to 14, characterised in that the drive means for transverse movement of the machining tools (13, 14) or for movement thereof relative to the plates (17) carrying them are controllable electrically or electronically, wherein incremental pick-ups which detect the relative movement between machining tool (13, 14) and tree trunk (4) and mechanical and/or electric stepping motors.
EP86890263A 1985-11-13 1986-09-22 Apparatus for producing prismatic or pyramidal logs Expired - Lifetime EP0222728B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0330885A AT390025B (en) 1985-11-13 1985-11-13 DEVICE FOR PRODUCING PRISMATIC OR PYRAMID-BASED BARS
AT3308/85 1985-11-13

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP89104356.4 Division-Into 1986-09-22
EP89104356A Division EP0327139A3 (en) 1985-11-13 1986-09-22 Device for producing prismatic or truncated pyramidal beams
EP89104356A Division-Into EP0327139A3 (en) 1985-11-13 1986-09-22 Device for producing prismatic or truncated pyramidal beams

Publications (2)

Publication Number Publication Date
EP0222728A1 EP0222728A1 (en) 1987-05-20
EP0222728B1 true EP0222728B1 (en) 1990-02-07

Family

ID=3548539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890263A Expired - Lifetime EP0222728B1 (en) 1985-11-13 1986-09-22 Apparatus for producing prismatic or pyramidal logs

Country Status (7)

Country Link
US (1) US4750535A (en)
EP (1) EP0222728B1 (en)
AT (1) AT390025B (en)
CA (1) CA1267592A (en)
DE (1) DE3668826D1 (en)
FI (1) FI84235C (en)
PL (1) PL149664B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286701B1 (en) * 1987-04-13 1992-06-24 Johann Wolf GmbH KG Method and device for the edge trimming of round wood
DE4016628A1 (en) * 1990-05-23 1991-11-28 Esterer Ag Maschf Producing lumber prodn. in chipping heads rig - by appropriate coupling of chippers with longitudinal transport device
AT397224B (en) * 1991-05-14 1994-02-25 Wolf Systembau Gmbh & Co Kg METHOD AND DEVICE FOR PRODUCING SQUARE EDGE FROM TREE TRUNKS OD. DGL.
US5765615A (en) * 1996-09-20 1998-06-16 Optimil Machinery, Inc. Canter with curve-cutting capability
ATE254016T1 (en) * 1997-11-04 2003-11-15 Holzindustrie Preding Ges M B DEVICE FOR PRODUCING SQUANTED TIMBER FROM ROUND WOODS
AT2298U1 (en) * 1997-11-04 1998-08-25 Holzindustrie Preding Ges M B DEVICE FOR PRODUCING SQUARE FROM ROUND WOODS
AT406131B (en) * 1998-07-17 2000-02-25 Wolf Systembau Gmbh & Co Kg METHOD AND DEVICE FOR PRODUCING EIGHT- OR MULTIPLE-SIDED EDGEWOODS
AT406840B (en) * 1999-02-09 2000-09-25 Wolf Systembau Gmbh & Co Kg DEVICE FOR TREATING TRUNKS
AT407233B (en) * 1999-04-09 2001-01-25 Johann Wolf DEVICE FOR GENERATING SQUARE BEAMS FROM TRUNKS
US20040079210A1 (en) * 2002-10-24 2004-04-29 Robitaille Joseph Andre Pascal Log-processing machine having a pivot system
CN103831884A (en) * 2012-11-22 2014-06-04 南京林业大学 Method for precisely manufacturing regular hexagonal prism with log
CN106493658B (en) * 2014-11-05 2018-03-27 南京林业大学 A kind of manufacture method for being used to compress positive six prismsby blank material

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DE304676C (en) *
US4272256A (en) * 1979-10-15 1981-06-09 Koppers Company Inc. Method for heating oxygen containing gas in conjunction with a gasification system
EP0217784A1 (en) * 1985-09-30 1987-04-08 Wolf Systembau Gesellschaft m.b.H. KG Method and machine for edge-trimming trunks

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US3190326A (en) * 1960-05-27 1965-06-22 Standal George Martin Chipper apparatus
DE2947993C3 (en) * 1969-03-05 1996-04-25 Wurster & Dietz Maschf Process for longitudinally cutting pieces of wood
CH646366A5 (en) * 1979-11-28 1984-11-30 Wurster & Dietz Gmbh Co Sawing machine and method of operating it
SE431621B (en) * 1980-07-03 1984-02-20 Kockums Ind Ab DEVICE FOR INSTALLATION OF WOOD BLOCK LONG A LOADING ROAD IN A WOODWORKING MACHINE
DE3114843C2 (en) * 1981-04-11 1986-02-27 Wurster u. Dietz GmbH u. Co. Maschinenfabrik, 7400 Tübingen Method for processing round wood and device for carrying out the method
SE444784B (en) * 1984-09-14 1986-05-12 Eriksson Ab A K sawing equipment

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DE304676C (en) *
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EP0217784A1 (en) * 1985-09-30 1987-04-08 Wolf Systembau Gesellschaft m.b.H. KG Method and machine for edge-trimming trunks

Also Published As

Publication number Publication date
ATA330885A (en) 1989-08-15
PL149664B1 (en) 1990-03-31
DE3668826D1 (en) 1990-03-15
CA1267592A (en) 1990-04-10
FI864501A0 (en) 1986-11-05
US4750535A (en) 1988-06-14
FI84235C (en) 1991-11-11
FI84235B (en) 1991-07-31
EP0222728A1 (en) 1987-05-20
FI864501A (en) 1987-05-14
PL261949A1 (en) 1987-08-24
AT390025B (en) 1990-03-12

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