EP0286701B1 - Procédé et dispositif pour le débitage de grumes rondes - Google Patents

Procédé et dispositif pour le débitage de grumes rondes Download PDF

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Publication number
EP0286701B1
EP0286701B1 EP87105436A EP87105436A EP0286701B1 EP 0286701 B1 EP0286701 B1 EP 0286701B1 EP 87105436 A EP87105436 A EP 87105436A EP 87105436 A EP87105436 A EP 87105436A EP 0286701 B1 EP0286701 B1 EP 0286701B1
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EP
European Patent Office
Prior art keywords
tools
working
trunk
tool set
parallel
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.)
Expired - Lifetime
Application number
EP87105436A
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German (de)
English (en)
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EP0286701A1 (fr
Inventor
Johann Wolf
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Johann Wolf GmbH KG
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Johann Wolf GmbH KG
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 Johann Wolf GmbH KG filed Critical Johann Wolf GmbH KG
Priority to EP87105436A priority Critical patent/EP0286701B1/fr
Priority to AT87105436T priority patent/ATE77578T1/de
Priority to DE8787105436T priority patent/DE3780033D1/de
Priority to PL1988271449A priority patent/PL159869B1/pl
Priority to US07/174,353 priority patent/US4846237A/en
Priority to CA000563322A priority patent/CA1320896C/fr
Priority to CS882531A priority patent/CS276899B6/cs
Publication of EP0286701A1 publication Critical patent/EP0286701A1/fr
Application granted granted Critical
Publication of EP0286701B1 publication Critical patent/EP0286701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/10—Wheeled circular saws; Circular saws designed to be attached to tractors or other vehicles and driven by same
    • 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
    • B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
    • B27B7/02—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of circular saws mounted substantially at right angles, e.g. vertically and horizontally

Definitions

  • the invention relates to a method and a device for all-round processing of naturally grown tree trunks to form truncated pyramid-like beams. It relates in particular to a method and a device for processing tree trunks into beams, boards, profiles or the like machined on all sides.
  • EP-A-167 013 discloses a method for flattening tree trunks on all sides in a single operation.
  • the patent publication EP-A-222 728 shows a device for processing tree trunks into prismatic or pyramid-shaped beams, which cut the tree by at least two mutually opposing processing tools, which during the trimming transverse to the direction of The longitudinal extent of the tree trunk can be moved along straight lines and inclined to the axis of the tree trunk, in particular converging towards the axis of the tree trunk.
  • This publication also teaches that processing is to be carried out in two steps, for example in forward and reverse, with the tree being turned through 90 ° once between forward and reverse.
  • the object of the invention is to provide a method for trimming or flattening logs on all sides with little expenditure of time and at low cost.
  • the flat sides which are formed by trimming or flattening the tree trunk or the log in one work cycle, can lie opposite one another, be directly adjacent or adjoin a previously formed or later to be formed flats.
  • the selection of the pages to be processed in one operation can be made according to the work tools to be used.
  • the flattening of the logs is expediently tapered in accordance with the natural growth or carried out according to a chosen taper; this reduces material loss to a minimum.
  • the log can be flattened on four, six, eight, ten or twelve sides. The more pages are flattened to the waste and thus the loss of material can be kept so small.
  • three sides are flattened in each of the first and second work steps, two of which each form an angle greater than 90 ° that is adjacent to one another.
  • This design of the method allows the log to be processed with a few work passes and with relatively simple tools, as will be described further below.
  • the round timber can be rotated by 180 ° after going through the first work step and processed in mirror image in a second work step.
  • the same flattening tools which can be saws of any kind or cutting tools, can be used to form further flattenings.
  • the round wood is processed simultaneously with a second tool set, which is offset by 180 ° in mirror image with the first tool set and is designed to be controllable or controllable with respect to the round wood, in the same work cycle.
  • a second tool set which is offset by 180 ° in mirror image with the first tool set and is designed to be controllable or controllable with respect to the round wood, in the same work cycle.
  • it is possible according to this training to have a log in one work cycle to process on four, six, eight or ten pages at the same time. By controlling individual tools towards or away from the log, the conicity of the log can be taken into account.
  • the remaining two forest edges can be flattened by two opposite sawing or cutting tools or removed in separate work steps.
  • Flattening on twelve lateral surfaces is also advantageous.
  • This goal can be achieved in the context of the present invention in a number of ways, for example by machining with tool sets with three tools each in four passes, or by machining with mirrored tool sets with three tools each in two passes, or by means of tool sets arranged one behind the other in the direction of passage in one pass.
  • This object is achieved according to the invention in that two axially parallel removal tools arranged next to one another are delimited on both sides with one removal tool each, the axes of which form an angle of less than 90 ° to the axis-parallel sawing tools.
  • the invention has a surprising number of advantages: First of all, it is obvious that with this device according to the invention, a log can be processed simultaneously on three or more sides in one work cycle. According to the methods described above, a log can be processed on all sides with this device.
  • This device also makes it possible to process a round log into a four-sided beam. To do this, the log can first be processed on three sides simultaneously in a single pass, and then the remaining rounding or forest edge can be removed on a smooth surface using the axially parallel removal tools.
  • the device according to the invention thus enables the economical processing of logs into four-, six-, eight-, ten- or twelve-sided or even multi-sided beams.
  • the device according to the invention also has the further advantage that it is suitable for cutting the beams processed on all sides into boards. This is possible because after one more Education of the invention, the axially parallel removal tools are arranged transversely to the direction of the round timber relative to each other adjustable. The area to be cut by both axially parallel tools, which is larger in the middle of the log than in the other layers, can be set to the desired value.
  • the removal tools mentioned can be of any type, for example circular saws, chain saws, any other saws or cutting tools. Even if one speaks in the claims or the description of saws, other tools, provided that they achieve the desired effect, are also to be considered as disclosed within the scope of the invention.
  • the removal tools arranged laterally from the axially parallel tools are expediently adjustable in their inclination relative to the axes of the axially parallel tools.
  • the device according to the invention is thus suitable for processing logs into beams or profiles with almost any circumferential shape.
  • the axially parallel removal tools for example sawing tools, are offset one behind the other in relation to the way to work and arranged in such a way that their cutting circles overlap slightly. In this way it is ensured that they produce a smooth flattening without leaving a protruding rib. Furthermore, the risk of the two axially parallel sawing tools interfering with one another is thereby eliminated.
  • the progressive work path is expediently triggered by the longitudinally moving work tools or by the longitudinally moving log. This makes it possible to process the log in accordance with its geometry.
  • the working path for producing the flats to the axis of the log includes an acute angle corresponding to the natural course of the forest edge.
  • the work tools are expediently slidably mounted in inclinable guides.
  • the device according to the invention allows the processing of logs in a variable, desired manner. So it can be used to process a log into a pyramid-shaped beam, the surfaces of which are all trapezoidal. But it also allows the processing of logs into beams, some of which are conical or trapezoidal, but which can also have diametrically opposite surfaces that are parallel to each other.
  • a trolley with an incline-adjustable log holder can be provided, on which the log is fixed and can be moved past stationary tools.
  • the tools are arranged to be controllable or controllable in accordance with the progressive work path to the log.
  • the tools can advantageously be pivoted and locked by definable angles.
  • the tools can be swiveled through 180 ° and locked in this position.
  • the four axes of the sawing or cutting tools are arranged stationary with respect to one another, or can be brought and fixed in a position that is stationary relative to one another.
  • Damait is the geometry of the beam to be formed from the log by processing.
  • the axes of the sawing or cutting tools which are inclined on both sides of the axially parallel sawing tools, can be pivoted and can be locked at an angle of 90 ° to the axially parallel sawing tools.
  • the cutting tools are at least in the 90 ° position the progressive feed in relation to the round timber, or the feed of the round timber compared to the tools, according to the course of the forest edge to the round timber can be controlled or removed.
  • the inclination of the surfaces machined by these tools can be adjusted in any way relative to the central axis of the log.
  • the sawing or cutting tools which are inclined on both sides to the axially parallel sawing tools, can be moved towards or away from the log at a right angle to the parallel axes of the sawing tools.
  • This development of the invention has the advantage, for example, that the beams created by machining the logs can be processed into boards with the axially parallel sawing tools, unhindered by the side working tools, which can be moved sufficiently far to the side.
  • the sawing or cutting tools which are inclined on both sides, are pushed away, and the separation with the axially parallel sawing tools takes place in several passes.
  • the guideway of the tools or the support of the feed carriage is set so that the feed path is axially parallel to the axis of the log.
  • an adjustable chain hoist can also be used to feed the log.
  • the device can also be designed so that the first two operations are merged.
  • the configuration of the device in particular the feed device and the inclination setting of the feed path, can also be designed in any other way.
  • the main object of the invention is to flatten logs eight- or possibly six-sided and their natural conical shape accordingly and to process at least three sides in one pass in order to keep the waste as low as possible and to obtain profiles machined on all sides.
  • FIG. 1 shows a body obtained by octagonally flattening a log, the circumferential line 10 of which is indicated. This is processed into boards 12 and a conical bar 14.
  • FIG. 2 shows a body obtained by flattening round logs on eight sides, the circumferential line 10 of which is indicated, which is sawn into boards 12 of different thicknesses.
  • FIG. 3 shows a processing unit according to the invention.
  • Two axially parallel circular saws 24 and 25 are fastened to a chassis 20 which can be moved on wheels 22. As the double arrow 26 indicates, these circular saws can be adjusted towards and away from one another essentially transversely to the direction of travel of the processing unit.
  • two sawing tools 28 and 29 are arranged, inclined at an obtuse angle to them.
  • a round log 32 is arranged on height-adjustable supports 30 within the open cross-section of the chassis 20. As can be seen on the dashed line 34, which represents the circumference of the end of the round wood facing away from the viewer, it is mounted on the stands 30 in such a way that the upper surface of the round wood is aligned horizontally.
  • the log 32 is also arranged at such a height that the axially parallel sawing tools are at the height at which the upper flattening or the upper surface is to be formed.
  • the chassis 20 of the processing unit is moved once over the entire length of the round timber with running sawing tools.
  • the log 32 is flattened simultaneously on three sides.
  • the log is then turned through 180 ° about its longitudinal axis and placed on the stand 30, which are set to the desired height. Then the processing unit is again moved with running sawing tools over the entire length of the round timber 32, again 3 sides of the round timber 32 being flattened at the same time.
  • FIG. 4 shows the processing unit of FIG. 3, which, however, is set to flatten the remaining two lateral forest edges.
  • the two axially parallel sawing tools 24 and 25 are moved into their upper end position, in which they are arranged at a clear distance above the log.
  • the two side sawing tools 28 and 29 are each placed vertically.
  • removal tools 28 and 29 are to be moved toward or away from the long timber while the processing unit is being advanced, then removal tools 28 and 29 are preferably used as cutting tools.
  • 24, 25, 28 and 29 generally refer to abrasive or flattening tools. So instead of circular saws or cutting tools, chainsaws or saws can also be used.
  • the processing unit shown therein allows the round-sided flattening of a log in only three work passes.
  • FIG. 1 Another embodiment of the invention is shown in FIG.
  • two axially parallel sawing tools 24, 25 and two oblique removal tools 28 and 29 are mounted on a gate-shaped, fixed stand 36 of a processing unit.
  • the round timber 32 is mounted on height-adjustable stands 34, which in turn can be moved on wheels 36.
  • the log 32 is moved relative to the processing unit.
  • the axially parallel sawing tools 24 and 25 are in turn mounted in a height-adjustable manner, and the lateral removal tools 28 and 29 are mounted so as to be displaceable both in their inclination and in their height position.
  • FIG. 6 shows a stationary base frame 38, which is anchored to the floor and carries adjustable axially parallel sawing tools 24 and 25 and the lateral removal tools 28 and 29 on its concave upper side.
  • Hydraulic rams 44 and an adjustable upper system 46 are provided in a carriage 40 which can be moved by means of wheels 42 running on rails.
  • the log 32 is pressed upwards by means of the hydraulic ram 44 against the adjustable system 46 and held in this position while the carriage 40 moves the log 32 in the working direction, with the removal tools 24, 25, 28 and 29 the log 32 simultaneously on three sides flatten.
  • FIG. 7 schematically shows a system for the continuous processing of the top and bottom sides as a further possible embodiment.
  • the upper side is processed according to FIG. 5.
  • the right section in FIG. 7 that is to say after passing through the processing unit 36, a luffing carriage 50 takes over the round timber according to the diagram in FIG. 6, the left and middle ones Rollers 53 and 54 rest on rails 58.
  • the seesaw carriage 50 is tilted as shown in FIG. 7.
  • the top of the log is parallel to the rail, as indicated by the triangle 60 in FIG.
  • an outer pair of rollers 52 or 56 on the seesaw carriage 50 is designed to be height-adjustable.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Looms (AREA)

Claims (18)

  1. Procédé pour débiter de tous côtés des troncs d'arbre de croissance naturelle afin d'obtenir des poutres en forme de pyramides tronquées,
    selon lequel on produit un mouvement relatif entre un tronc d'arbre, orienté sensiblement parallèlement à un plan de travail, et un jeu d'outils,
    le jeu d'outils étant constitué d'au moins trois outils d'enlèvement de copeaux et d'aplanissement (24, 25, 28, 29),
    un premier outil (24, 25) pouvant produire une première coupe, parallèle au plan de travail,
    et deux autres outils (28, 29) pouvant produire une deuxième et une troisième coupes, respectivement limitrophes à angle obtus de la première coupe,
    les deux autres outils étant guidés sur des parcours perpendiculaires aux deuxième et troisième coupes et accomplissant alors un mouvement d'avance continue, les outils agissant à distance sensiblement constante d'une génératrice respective du tronc d'arbre,
    une première opération étant réalisée, pour laquelle le tronc d'arbre est orienté avec une génératrice supérieure parallèle au plan de travail,
    la première opération étant suivie d'une rotation du tronc d'arbre de 180° autour de son axe et d'une adaptation de la distance relative entre le jeu d'outils et la face d'appui du tronc d'arbre,
    un mouvement relatif en sens opposé entre le jeu d'outils et le tronc d'arbre étant ensuite réalisé, au cours d'une seconde opération.
  2. Procédé pour débiter de tous côtés des troncs d'arbre de croissance naturelle afin d'obtenir des poutres en forme de pyramides tronquées,
    selon lequel on produit un mouvement relatif entre un tronc d'arbre, orienté sensiblement parallèlement à un plan de travail, et un jeu d'outils,
    le jeu d'outils étant constitué d'au moins trois outils d'enlèvement de copeaux et d'aplanissement (24, 25, 28, 29),
    un premier outil (24, 25) pouvant produire une première coupe, parallèle au plan de travail,
    et deux autres outils (28, 29) pouvant produire une deuxième et une troisième coupes, respectivement limitrophes à angle obtus de la première coupe,
    les deux autres outils étant guidés sur des parcours perpendiculaires aux deuxième et troisième coupes et accomplissant alors un mouvement d'avance continue, les outils agissant à distance sensiblement constante d'une génératrice respective du tronc d'arbre,
    une première opération étant réalisée, pour laquelle le tronc d'arbre est orienté avec une génératrice supérieure parallèle au plan de travail,
    et un second jeu d'outils étant prévu, similaire au premier jeu d'outils et se raccordant à distance à ce dernier dans la direction longitudinale de débitage,
    le premier et le second jeux d'outils étant logés dans des bâtis stationnaires, dans lesquels le premier jeu d'outils agit sur la région d'enveloppe supérieure du tronc d'arbre et le second jeu d'outils sur la région d'enveloppe inférieure du tronc d'arbre,
    un premier chariot, présentant des supports (34) réglables en hauteur, étant prévu pour le transport du tronc d'arbre le long du premier jeu d'outils et
    un second chariot (50), présentant des supports réglables en hauteur et conçu comme chariot basculant, étant prévu pour le transport du tronc d'arbre le long du second jeu d'outils,
    le tronc d'arbre étant, une fois achevé le débitage sur le premier jeu d'outils, pris en charge par le chariot basculant' et basculé dans une position dans laquelle la génératrice inférieure devient sensiblement parallèle au plan de travail,
    un débitage étant ensuite effectué le long du second jeu d'outils, sans modification du sens de déplacement du tronc d'arbre.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au cours de la première et de la seconde opérations, on aplanit chaque fois trois côtés, dont deux côtés voisins forment entre eux des angles supérieurs à 90°.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la grume ronde est aplanie avec une allure conique correspondant à la croissance naturelle, ou selon une conicité choisie.
  5. Dispositif pour débiter de tous côtés des troncs d'arbre de croissance naturelle afin d'obtenir des poutres en forme de pyramides tronquées,
    dans lequel on produit un mouvement relatif entre un tronc d'arbre, orienté sensiblement parallèlement à un plan de travail, et un jeu d'outils, et un dispositif est prévu pour orienter horizontalement le tronc d'arbre,
    le jeu d'outils étant constitué d'au moins trois outils d'enlèvement de copeaux et d'aplanissement (24, 25, 28, 29),
    un premier outil (24, 25) pouvant produire une première coupe, parallèle au plan de travail,
    et deux autres outils (28, 29) pouvant produire une deuxième et une troisième coupes, respectivement limitrophes à angle obtus de la première coupe,
    les deux autres outils étant guidés sur des parcours perpendiculaires aux deuxième et troisième coupes et accomplissant alors un mouvement d'avance continue, les outils agissant à distance sensiblement constante d'une génératrice respective du tronc d'arbre,
    et le premier outil étant composé de deux outils d'enlèvement ou de sciage juxtaposés (24, 25), d'axes parallèles.
  6. Dispositif pour la mise en oeuvre du procédé, selon l'une ou plusieurs des revendications de dispositif précédentes, caractérisé en ce que les outils d'enlèvement ou de sciage d'axes parallèles (24, 25) peuvent être réglés l'un par rapport à l'autre sensiblement transversalement à la direction de passage de travail.
  7. Dispositif pour la mise en oeuvre du procédé, selon l'une ou plusieurs des revendications de dispositif précédentes, caractérisé en ce que les outils (28, 29) qui sont disposés de part et d'autre des outils d'axes parallèles (24, 25), sont réglables en inclinaison.
  8. Dispositif pour la mise en oeuvre du procédé, selon l'une ou plusieurs des revendications de dispositif précédentes, caractérisé en ce que les outils d'enlèvement (24, 25, 28, 29, 60, 61) sont des outils de sciage, des outils d'enlèvement de copeaux ou autres outils aplanissant l'écorce et/ou l'arrondi de la grume ronde.
  9. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les outils de sciage d'axes parallèles (24, 25) sont décalés l'un derrière l'autre par rapport au parcours de travail et leurs cercles de coupe se recoupent légèrement.
  10. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que la progression du chemin de travail est déclenchée par le déplacement longitudinal des outils d'enlèvement ou par celui de la grume ronde (32).
  11. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que le chemin de travail destiné à produire les aplanissements forme, par rapport à l'axe de la grume ronde (32), un angle aigu correspondant à l'allure naturelle de l'arête du tronc.
  12. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les outils d'enlèvement sont montés coulissants dans les guides d'inclinaison réglable.
  13. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que la grume ronde (32) est fixée en position sur un chariot (34, 36, 50) présentant un support de grume ronde d'inclinaison réglable, et peut être déplacée devant les outils stationnaires (38, 24, 25).
  14. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les outils (24, 25, 28, 29) peuvent être rapprochés ou éloignés de la grume ronde (32) conformément à la progression du chemin de travail.
  15. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les outils (24, 25, 28, 29) peuvent être tournés d'angles déterminables et bloqués dans les positions correspondantes.
  16. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les outils (24, 25, 28, 29) peuvent être tournés de 180° et bloqués dans cette position.
  17. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les quatre axes des outils de sciage ou d'enlèvement de copeaux (24, 25, 28, 29) sont disposés stationnairement les uns par rapport aux autres, ou peuvent être amenés et fixés dans des positions relatives stationnaires.
  18. Dispositif selon l'une des revendications de dispositif précédentes, caractérisé en ce que les axes des outils de sciage ou d'enlèvement de copeaux (28, 29) qui sont disposés inclinés de part et d'autre des outils de sciage (24, 25) d'axes parallèles, peuvent être tournés et bloqués à un angle de 90° par rapport aux outils de sciage d'axes parallèles.
EP87105436A 1987-04-13 1987-04-13 Procédé et dispositif pour le débitage de grumes rondes Expired - Lifetime EP0286701B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP87105436A EP0286701B1 (fr) 1987-04-13 1987-04-13 Procédé et dispositif pour le débitage de grumes rondes
AT87105436T ATE77578T1 (de) 1987-04-13 1987-04-13 Verfahren und vorrichtung zum besaeumen von rundhoelzern.
DE8787105436T DE3780033D1 (de) 1987-04-13 1987-04-13 Verfahren und vorrichtung zum besaeumen von rundhoelzern.
PL1988271449A PL159869B1 (pl) 1987-04-13 1988-03-26 Sposób obróbki ze wszystkich stron klód i urzadzenie do obróbki ze wszystkich stron klód PL
US07/174,353 US4846237A (en) 1987-04-13 1988-03-28 Method and apparatus for sawing round wood trunks
CA000563322A CA1320896C (fr) 1987-04-13 1988-04-05 Methode et appareil de sciage de troncs d'arbre
CS882531A CS276899B6 (en) 1987-04-13 1988-04-13 Apparatus for logs edging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87105436A EP0286701B1 (fr) 1987-04-13 1987-04-13 Procédé et dispositif pour le débitage de grumes rondes

Publications (2)

Publication Number Publication Date
EP0286701A1 EP0286701A1 (fr) 1988-10-19
EP0286701B1 true EP0286701B1 (fr) 1992-06-24

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Application Number Title Priority Date Filing Date
EP87105436A Expired - Lifetime EP0286701B1 (fr) 1987-04-13 1987-04-13 Procédé et dispositif pour le débitage de grumes rondes

Country Status (7)

Country Link
US (1) US4846237A (fr)
EP (1) EP0286701B1 (fr)
AT (1) ATE77578T1 (fr)
CA (1) CA1320896C (fr)
CS (1) CS276899B6 (fr)
DE (1) DE3780033D1 (fr)
PL (1) PL159869B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397224B (de) * 1991-05-14 1994-02-25 Wolf Systembau Gmbh & Co Kg Verfahren und vorrichtung zum herstellen von vierkantern aus baumstämmen od. dgl.

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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SE505056C2 (sv) * 1991-03-19 1997-06-16 Martin Wiklund Förfarande för sönderdelning av stockar
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CS276899B6 (en) 1992-09-16
PL271449A1 (en) 1989-01-23
PL159869B1 (pl) 1993-01-29
CA1320896C (fr) 1993-08-03
CS253188A3 (en) 1992-03-18
ATE77578T1 (de) 1992-07-15
DE3780033D1 (de) 1992-07-30
EP0286701A1 (fr) 1988-10-19
US4846237A (en) 1989-07-11

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