EP3079870B1 - Method for the production of sawn timber panels - Google Patents

Description

The invention relates to a method for producing a lumber panel from long wood raw wood. Furthermore, the invention relates to sawn timber products which are produced according to the production process according to the invention.

From the prior art, different embodiments of methods for the production of lumber panels are known. document WO 93/08000 A1 is considered to be the closest prior art to the subject-matter of claim 1. It discloses (the reference numbers in parentheses in this paragraph refer to this document) a method of making lumber panels from long lumber raw wood, with a sequence of the following manufacturing steps: a. Producing profilings (reference numeral 2, Figure 4 ) by means of a shape-cutting device in each case at edge portions of at least two opposite guide surfaces (reference numeral 4, Figure 4 ), which adjoin a forest edge of the at least partially unedged long timber raw wood, wherein the profilings are arranged on the edge portions of a guide surface preferably symmetrical to a Führungsflächensymmetrieebene, which Führungsflächensymmetrieebene is directed substantially perpendicular to the opposite guide surfaces and substantially in the center of the respective guide surface widths; c. Cutting off at least two side boards on diametrically opposite guide surfaces by means of a cutting device along cutting planes in each case in the longitudinal direction of the long timber raw wood to form a central timber beam ( Figure 4 ); d. If necessary, separating further side boards and / or long wood parts in each case in the longitudinal direction of the long wood raw wood from the central timber beam ( Figure 13 ); e. Optionally, arranging and / or stacking the side boards in each case in a mutually corresponding and mutually rotated by 180 ° and / or fallen position (Figures 7 and 8); f. subsequent drying of the side boards by storage in evaporative environment; G. preferably equalizing and / or reprofiling the profiles of the dried side boards; H. preferably dividing the dried side boards into side board parts by attaching a partition cut surface extending substantially in a central side board symmetry plane of the side board by means of a partitioning device; i. Sorting the dried side boards and / or side board parts, wherein undivided side boards, in particular by mutual rotation by 180 ° and / or placement in toppled layers are arranged side by side, so that each Seitenbrettsymmetrieebenen come to lie substantially parallel to each other, and / or already divided, in pairs mutually corresponding side board parts are arranged side by side in such a way that their dividing cut surfaces come to lie substantially parallel to one another; j. Applying adhesive to profiled edge portions of profiled side boards and / or matching side board parts and / or to split cut surfaces of the side board parts; k. Adhering the adhesive profiled edge portions and / or pitch surfaces of laterally adjacent side boards and / or side board members under pressure, preferably under lateral pressure against the adhesive surfaces, to a lumber panel having a lumber panel width, wherein a lumber panel length is substantially one lumber length corresponds; 1. If necessary, trimming the entire lumber panel at the longitudinal side edges in the longitudinal direction of the glued side boards and / or the side board parts on a selected Sawn timber plate width and / or trimming on faces of the glued side boards and / or the Seitenbrettteile transverse to their longitudinal direction on a selected sawn timber length using at least one cutting device , The document DE 2 159 337 discloses, for example, a method and an apparatus for the production of sawn timber, the task is based on obtaining sawn timber with the highest possible utilization or with a low loss. The individual sawn timber boards are each divided parallel to the longitudinal axis direction of a tree trunk. The trimming of the longitudinal edges of the boards takes place in mirror-symmetrical profiles adapted to the conicity of the tree. A disadvantage of this method is at least that the edged boards are separated simultaneously or subsequently to the trimming by a central separating cut in their core. The separating cut serves to determine longitudinal edges of the boards separated in the core. However, the central separation of unedged boards or wooden planks with a forest edge inevitably leads to distortions or to a twisting of the boards due to the released splint tensions. A precisely trained and symmetrically symmetrical profiling of two split boards or planks, which are supplemented to a solid cross-section, succeeds - if at all - then only after correspondingly expensive, material-removing machining with high yield losses. At the in DE 2 159 337 presented method is therefore further of disadvantage that already rough sawn split boards must be either trained several times or still undivided boards before the central division by very strong removal of material must be planed on both sides plan before they can be glued to a wood composite. This is associated with high yield losses as well as with elaborate processing steps.

Furthermore is from document AT 11 958 U1 already a method for processing of raw wood or round wood known. Here, the raw wood is initially divided into at least five parts (planks, boards), with subsequent expansion joints attached to the separated inner parts and these are then dried. Profiling each inner part takes place only after drying.

document EP 0 518 246 A2 relates to a production method for processing roundwood, according to which first a core area is separated from the wet roundwood. The wet starting material is then dried and only after drying are individual elements, which are later joined together to form wooden beams, separated from the starting material and dressed for the final size profiling.

In addition to the disadvantages already mentioned above, it is at least disadvantageous in these methods that profiling of internal parts or of individual elements after drying is complicated, which is why high throughput rates can not be achieved with these methods. For example, with current processing machines a maximum of 25 inner board and / or screed parts per minute can be profiled.

It is therefore the object of the present invention to provide an improved method for the production of lumber boards from Seitenbrettware, which avoids the disadvantages of the prior art, and with which loss as possible with high throughput side boards with strength for the sake of strength, stress-free, especially crack-free, Fiber course as well as possible without warping be obtained.

This object is achieved in a manufacturing method according to claim 1. Advantageous embodiments and modifications of the invention are set forth in the subclaims and the description.

1. a. Herstellen von Profilierungen mithilfe einer Formschneidenden Vorrichtung jeweils an Randabschnitten von zumindest zwei gegenüberliegenden Führungsflächen, welche an eine Waldkante des zumindest teilweise unbesäumten Langholz-Rohholzes angrenzen, wobei die Profilierungen an den Randabschnitten einer Führungsfläche vorzugsweise symmetrisch zu einer Führungsflächensymmetrieebene angeordnet sind, welche Führungsflächensymmetrieebene im Wesentlichen senkrecht zu den gegenüberliegenden Führungsflächen sowie im Wesentlichen mittig der jeweiligen Führungsflächenbreiten gerichtet ist;
2. b. Herstellen von zumindest einer Entlastungsnut mithilfe einer Einschnitt- oder Fräsvorrichtung an zumindest zwei gegenüberliegenden Führungsflächen, wobei die zumindest eine Entlastungsnut jeweils im Wesentlichen senkrecht zur Führungsfläche angeordnet ist;
3. c. Abtrennen von zumindest zwei Seitenbrettern an diametral gegenüberliegenden Führungsflächen mithilfe einer Schneidvorrichtung entlang von Schnittebenen jeweils in Längsrichtung des Langholz-Rohholzes unter Bildung einer zentralen Kantholzbohle;
4. d. Gegebenenfalls Abtrennen weiterer Seitenbretter und/oder Langholzteile jeweils in Längsrichtung des Langholz-Rohholzes von der zentralen Kantholzbohle;
5. e. Gegebenenfalls Anordnen und/oder Stapeln der Seitenbretter jeweils in eine paarweise miteinander korrespondierende sowie gegenseitig um 180° gedrehte und/oder gestürzte Lage;
6. f. anschließendes Trocknen der Seitenbretter durch Lagerung in verdunstungsfördernder Umgebung;
7. g. vorzugsweise Egalisieren und/oder Nachprofilieren der Profilierungen der getrockneten Seitenbretter;
8. h. vorzugsweise Teilen der getrockneten Seitenbretter in Seitenbrettteile durch Anbringen einer im Wesentlichen in einer mittigen Seitenbrettsymmetrieebene des Seitenbretts verlaufenden Teilungs-Schnittfläche mittels einer Teilungsvorrichtung;
9. i. Sortieren der getrockneten Seitenbretter und/oder Seitenbrettteile, wobei ungeteilte Seitenbretter insbesondere durch gegenseitiges Verdrehen um 180° und/oder Verbringen in gestürzte Lagen geeignet nebeneinander angeordnet werden, sodass jeweils ihre Seitenbrettsymmetrieebenen im Wesentlichen parallel zueinander zu liegen kommen, und/oder bereits geteilte, paarweise miteinander korrespondierende Seitenbrettteile derart nebeneinander angeordnet werden, dass ihre Teilungs-Schnittflächen im Wesentlichen parallel zueinander zu liegen kommen;
10. j. Auftragen von Klebemittel an mit Profilierungen versehenen Randabschnitten passend profilierter Seitenbretter und/oder passender Seitenbrettteile und/oder an Teilungs-Schnittflächen der Seitenbrettteile;
11. k. Verkleben der mit Klebemittel versehenen profilierten Randabschnitte und/oder Teilungs-Schnittflächen von seitlich nebeneinander angelegten Seitenbrettern und/oder Seitenbrettteilen unter Druck, vorzugsweise unter seitlichem Druck gegen die mit Klebemittel versehenen Flächen, zu einer Schnittholzplatte mit einer Schnittholzplattenbreite, wobei eine Schnittholzplattenlänge im Wesentlichen einer Rohholzlänge entspricht;
12. l. Gegebenenfalls Beschneiden der gesamten Schnittholzplatte an deren Längsseitenrändern in Längsrichtung der verleimten Seitenbretter und/oder der Seitenbrettteile auf eine gewählte Schnittholzplattenbreite und/oder Beschneiden an Stirnflächen der verleimten Seitenbretter und/oder der Seitenbrettteile quer zu deren Längsrichtung auf eine gewählte Schnittholzplattenlänge mithilfe zumindest einer Schneidvorrichtung.

The method according to the invention for the production of lumber panels from long wood raw wood comprises the following production steps:

1. a. Producing profilings by means of a shape-cutting device in each case at edge portions of at least two opposite guide surfaces which adjoin a forest edge of the at least partially unedged longwood raw wood, wherein the profilings are arranged on the edge portions of a guide surface preferably symmetrical to a Führungsflächensymmetrieebene, which Führungsflächensymmetrieebene substantially perpendicular is directed to the opposite guide surfaces and substantially centrally of the respective guide surface widths;
2. b. Producing at least one relief groove by means of a cutting or milling device on at least two opposite guide surfaces, wherein the at least one relief groove is arranged in each case substantially perpendicular to the guide surface;
3. c. Separating at least two side boards on diametrically opposite guide surfaces by means of a cutting device along cutting planes, respectively in the longitudinal direction of the long timber raw wood, to form a central timber beam;
4. d. Optionally, separating further side boards and / or long wood parts in each case in the longitudinal direction of the long wood raw wood from the central timber beam;
5. e. Optionally, arranging and / or stacking the side boards each in a pairwise mutually corresponding and mutually rotated by 180 ° and / or fallen position;
6. f. subsequent drying of the side boards by storage in evaporative environment;
7. G. preferably equalizing and / or reprofiling the profiles of the dried side boards;
8. H. preferably dividing the dried side boards into side board parts by attaching a partition cut surface extending substantially in a central side board symmetry plane of the side board by means of a partitioning device;
9. i. Sorting the dried side boards and / or side board parts, wherein undivided side boards, in particular by mutual rotation by 180 ° and / or placement in toppled layers are arranged side by side, so that each Seitenbrettsymmetrieebenen come to lie substantially parallel to each other, and / or already divided, in pairs mutually corresponding side board parts are arranged side by side in such a way that their dividing cut surfaces come to lie substantially parallel to one another;
10. j. Applying adhesive to profiled edge portions of profiled side boards and / or matching side board parts and / or to split cut surfaces of the side board parts;
11. k. Adhering the adhesive profiled edge portions and / or pitch surfaces of laterally adjacent side boards and / or side board members under pressure, preferably under lateral pressure against the adhesive surfaces, to a lumber panel having a lumber panel width, wherein a lumber panel length is substantially one lumber length corresponds;
12. l. Optionally, trimming the entire lumber panel at its longitudinal side edges in the longitudinal direction of the glued side boards and / or the side board parts on a selected Sawn wood panel width and / or trimming on end faces of the glued side boards and / or the Seitenbrettteile transverse to the Lengthwise to a selected lumber plate length using at least one cutting device.

The term long timber raw wood is understood to mean both at least partially untrimmed logs, as well as at least partially untrimmed planks, boards and / or squared timber. Depending on the pre-processing of the raw wood, it may be necessary to form at least two diametrically opposite guide surfaces on the forested edges covered with outer surfaces of the unedged long wood raw wood to allow further processing in the first place. Likewise, when using board or square timber, it may be necessary to rework corresponding guide surfaces as bearing surfaces for the subsequent production steps by means of suitable devices which lift off the chip. The prismatic or essentially wedge-shaped long wood part remaining in the middle of the long wood raw wood after the separation of side boards and / or other long wood parts is referred to here in each case as the central timber beam.

Advantageously, in the further manufacturing process by the production of profilings and the attachment of one or more relief grooves on the guide surfaces already in the fresh state of the wood - ie even before drying - made the Langholzteile or side boards substantially stress-free and it is thus a bulging or twisting prevents the long wood parts during subsequent drying.

This manufacturing method is particularly economical, since the profiling takes place at the edge portions of the later side boards and arranging the relief grooves at a time at which the later side boards are still connected to the later central timber beam. Due to the particularly favorable arrangement of the side boards in near-edge location or directly adjacent to the forest edge of an unedged timber trunk, the yield of the manufacturing method according to the invention can be significantly increased compared to the prior art and the starting wood can be exploited significantly better. Due to the pre-profiling of guide surfaces in the vicinity of the tree edge or adjacent to a forest edge, the subsequent processing is substantially facilitated and the subsequent method steps can be carried out particularly quickly and economically.

Preferably, the dried side boards are leveled after the drying step, and / or profiled on the profiles. When leveling lie the side boards or

Langholzteile with one of the cut surfaces on a flat surface or are guided over this, if necessary to be processed by material removal on at least one cut surface to a predetermined thickness. By profiling the profiles at least one profiling or a butt joint of the side board is prepared for a subsequent forced operation or forced centering. The nachprofiled side board can thus be performed particularly accurately along the profiles in the subsequent subsequent processing steps. Furthermore, the re-profiling of the dried side boards also serves to prepare the initially profiled edge sections by the sharp-edged reprofiling already as finished adhesive surfaces for the subsequent gluing of the side boards or the side board parts. For example, one or more bumps can be profiled on the guide surfaces during re-profiling, whereby the guiding along the profiles and the subsequent bonding can be done very accurately. A material removal by the reworking or reprofiling of the previously pre-profiled edge portions is minimal and amounts to, for example, only a few mm material removal.

Appropriately, in a method according to the invention, at least two diametrically opposite guide surfaces are formed on a forest edge of the unedged longwood raw wood by means of a chip removing device in a method according to the invention, wherein opposing guide surfaces are each arranged in the longitudinal direction of the long wood raw wood and have a guide surface width. With the guide surfaces, which are arranged on opposite longitudinal sides at the forest edge of the unedged long wood raw timber, the further processing of the long timber raw wood can be substantially simplified. For the subsequent processing steps, for example the production of profiles and the attachment of relief grooves, the guide surfaces are already available as essentially planar bearing surfaces.

In a method according to the invention, it is particularly advantageous that a relief groove is arranged substantially centrally in the guide surface symmetry plane of the guide surface. In this embodiment, a relief groove is arranged substantially centrally of the guide surface. Since the guide surface essentially forms a later side surface of one of the side boards, the relief groove is thus also located substantially in the center of the side surface of the side board to be separated later from the central timber board.

In a method according to the invention, the at least one relief groove particularly expediently has a relief groove depth of less than 50%, preferably of less than 40%, of a material thickness of a side board. Advantageously, by selecting such relief groove depths in relation to the material thickness of the side board, on the one hand, efficient stress relief in the side boards is made possible and warping or twisting or cracking of the side board, in particular during drying, is largely avoided. On the other hand, by attaching the relief grooves with relief groove depths smaller than half the material thickness, the side boards are not adversely affected in their mechanical strength or rigidity.

In a preferred embodiment of the invention, in a method for producing lumber panels after separating at least two side boards on diametrically opposed guide surfaces, the central timber board is rotated about its longitudinal axis by a rotation angle of 90 ° and there are two more diametrically opposed guide surfaces laterally to the central Scaled timber plank arranged, wherein the opposing further guide surfaces are each arranged in the longitudinal direction of the central timber screed and have a guide surface width, further profilings are made at the edge portions of the two opposite guide surfaces and the profilings at the edge portions preferably symmetrical to a Führungsflächensymmetrieebene, which is substantially perpendicular is directed to the opposite guide surfaces and substantially centrally of the respective guide surface widths are arranged, as well as at least one relief groove, which is respectively arranged substantially perpendicular to the guide surface is made on the guide surfaces, whereupon two more side boards are separated at the diametrically opposite guide surfaces along cutting planes each in the longitudinal direction of the long wood raw wood from the central timber beam , In this embodiment, guide surfaces are particularly expediently arranged on four sides, which are each rotated around the longitudinal axis by an angle of rotation of 90 °, profiled on edge sections and provided with at least one relief groove. Subsequently, two opposite side boards, in total up to four side boards, can be separated one after the other from the central square timber board. By a suitable choice of the profilings, it is possible in this embodiment of the manufacturing method according to the invention to separate side board ware from the central square timber plank with minimal losses and the greatest possible yield. The central scantling plank is then available for further uses.

In a method according to the invention, it is particularly advantageous to produce profilings at edge portions of the at least two opposite guide surfaces and to produce the relief grooves on at least two diametrically opposite guide surfaces substantially simultaneously. In this embodiment, the profiles at the edge portions and the relief grooves are performed substantially simultaneously in one step on the guide surfaces. This enables a particularly efficient, rapid production process for sawn timber panels. The relief groove can also serve as a support for trouble-free removal or separation of the side boards from the remaining square timber board.

Appropriately, in a method according to the invention, the long wood raw wood prior to processing and / or prior to making the relief grooves and / or before making the profilings at the edge portions and / or before separating the side boards and / or optionally before separating another Measure logs of lumber from the central timber beam from a surveying facility. With the aid of a measuring device, one or more method steps of the production method can be measured, and thus the yield of the method can advantageously be further increased. Thus, long wood raw wood parts, which have, for example, a curved log or branching, can be detected and measured by the measuring device and division cuts are adapted as efficiently as possible to the individual geometry of the respective long wood raw wood part.

In a preferred embodiment, in a method according to the invention, the survey data acquired by the surveying device are fed to a control device and controlled by it for controlling the chip removing device and / or the cutting or milling device and / or the die cutting device and / or cutting devices and / or Dividing device used. In the context of the invention, the survey data acquired by the surveying device can be used by the control device to control different devices. Thus, the corresponding devices can be adapted to the individual requirements when cutting, profiling, milling and / or parts of longwood raw wood or from the side boards.

Appropriately, in a method according to the invention, opposing guide surfaces are arranged substantially parallel to each other and substantially parallel to the longitudinal axis of the long wood raw wood and takes place Cutting guide for the division of long wood raw wood in side boards and / or in long wood parts along cutting planes, which are substantially parallel to the longitudinal axis direction of the raw wood. In this embodiment of the manufacturing method according to the invention, the guide surfaces or the cutting planes for separating side boards or long wood parts are each arranged essentially parallel to the longitudinal axis of the long wood raw wood. This embodiment variant with axis-parallel processing steps lends itself to the utilization of untrimmed long wood raw timber with over its length substantially the same circumference or diameter. Deviations from a substantially cylindrical outer shell shape of the raw wood are absorbed primarily by the side boards. The side board width of the side boards can be approximately wedge-shaped or conical when selecting an axis-parallel blank at a free end and therefore be suitable for further processing to a lumber panel only conditionally. The central scantling board is trimmed for this purpose particularly precisely at right angles and can be reused for numerous other applications.

In further advantageous embodiments, in a method according to the invention, opposing guide surfaces are arranged substantially parallel to one of two diametrically opposite tangential planes to the tapered raw wood outer surface of the longwood raw wood, starting with the chip removing device starting from the outside, if necessary, a first guide surface parallel to the first tangent plane and another, the first guide surface opposite second guide surface is made parallel to the second tangent plane and then the long wood raw wood with a cut along cutting planes, which in turn substantially parallel to one of the two diametrically opposite tangent planes and / or the opposite guide surfaces are divided into side boards and / or in longwood parts along the cutting planes, creating a tapered, wedge-shaped ige central timber screed is obtained.

In this embodiment of the manufacturing method according to the invention, the guide surfaces or the cutting planes for separating side boards or long wood parts are each arranged substantially parallel to one of two tangential planes on the outer surface of the long wood raw wood. This variant with mantelparallelen processing steps is particularly suitable for the utilization of untrimmed long wood raw wood with a tapered over its length circumference or diameter. Thus, parallelepiped cut management, even with conically tapered tree trunks, allows for side board goods with an approximately constant board width win. The conicity of the log is further projected in this cutting guide inwards into the central timber screed, which then has a substantially wedge-shaped contour.

In a further advantageous embodiment, in the case of a method according to the invention for the side boards, the profilings are executed in the form of two oblique flat surfaces which are essentially symmetrical to the guide surface symmetry plane, which are each selected as close as possible to the raw wood outer surface in a setting angle of the profilings and the profilings are formed by tools that lift off the chip, preferably produced by milling tools, drawing end mills or by rotating circular saw blades, forming at least one shock chamfer. In this embodiment, the profiling can be adapted particularly precisely to the respective geometry of the raw timber to be utilized by adjusting the setting angle of the chip lifting tools and thus yield losses can be avoided. The adjustment angle is adjusted depending on the condition of the forest edge and it profiled side boards are made in such high quality with such tools. By means of at least a short bump in the area of each profiling, the exact adjustment for gluing and the transfer of lateral pressure during gluing is made possible for side boards, which are each provided with such profilings, without the two profiled side boards slipping during gluing. Optionally, one or more butt chamfers may be arranged in the region of the oblique profilings. The step-shaped bumps are essentially perpendicular to the cutting planes.

Suitably, in a lumber panel, which is produced according to a variant of the method according to the invention, a plurality of side boards and / or side board parts glued to their profiled edge portions and / or pitch-cut surfaces to form a single-layer composite panel. Particularly advantageous side panels and / or side panel parts, which are produced by the process according to the invention, suitably placed together and glued together with adhesive to form a single-layer composite panel. In order to ensure a lumber panel with consistent, high quality, the juxtaposition and / or bonding of the side boards or side board parts are monitored and controlled accordingly.

In one embodiment of the invention side boards and / or side board parts are glued together with a substantially equal thickness of material in a lumber panel. In this embodiment is advantageously a lumber panel with substantially the same Received material thickness, whereby post-processing can be omitted by equalizing the lumber panel.

Side boards and / or side board parts with a substantially constant length are particularly advantageously connected to a sawn timber plate width, with oblique butt joints and / or parting cut surfaces and / or side panels with symmetrical trapezoidal shape and / or relief grooves being formed on end faces of the sawn timber plate. In this embodiment, the corresponding butt joints and / or cut surfaces or even the relief grooves in undivided side boards in the plate cross-section can still be found on the end faces of the lumber panel.

In a preferred embodiment of the invention, the side boards and / or side board parts are each pairwise alternately to the oblique joints in neutral annual ring position and the straight pitch cut surfaces also in neutral annual ring layer laid together and glued together in a lumber panel. By suitable, alternating juxtaposition of paired side boards and / or pairwise cut side board parts and subsequent bonding in each case in neutral annual ring position a sawn timber plate is produced with a particularly advantageous structure. The oblique profiles thus run essentially tangentially to the annual rings of the side boards in the neutral annual ring position on the oblique butt joints glued together. At the straight joints at which each division-cut surfaces are glued together, meet the annual ring positions of the two joining partners each at a substantially right angle to the division-cutting surfaces or on the abutment surface, the annual ring courses gegengleich run in opposite directions. Due to the harmonious arrangement always pairwise associated board partner a uniform wave-shaped course of the annual ring position is achieved on the sawn timber plate and warping the finished sawn timber plate largely avoided.

Before the bonding, the annual ring layers of the adjacent board partners or join partners are advantageously checked and, if necessary, side boards and / or side board parts are reoriented or newly created, in order to bond the sawn board to all oblique butt joints provided with profilings or to all straight joints respectively to be able to guarantee with neutral annual rings. Through the control and monitoring when juxtaposing the side boards and / or side board parts in a neutral annual ring position as well as during gluing The butt joints and / or the division cut surfaces can be produced with consistently high quality lumber panels.

• Fig. 1 in einer Schnittansicht von der Seite einen Langholz-Rohholzstamm mit einem aus dem Stand der Technik bekannten Teilungsmuster zur Aufteilung von Seitenbrettware;
• Fig. 2 bis Fig. 5 jeweils einen Langholz-Rohholzstamm in seitlichen Schnittansichten in einer Abfolge einzelner Bearbeitungsschritte des erfindungsgemäßen Herstellungsverfahrens;
• Fig. 6 bis Fig. 9 jeweils einen Langholz-Rohholzstamm in seitlichen Schrägansichten in einer Abfolge einzelner Bearbeitungsschritte des erfindungsgemäßen Herstellungsverfahrens, wobei eine Schnittführung zur Teilung des Langholz-Rohholzes entlang von Schnittebenen erfolgt, welche im Wesentlichen parallel zur Längsachsenrichtung des Langholz-Rohholzes angeordnet sind;
• Fig. 10 bis Fig. 13 jeweils einen Langholz-Rohholzstamm in Schrägansichten von der Seite in einer Abfolge einzelner Bearbeitungsschritte des erfindungsgemäßen Herstellungsverfahrens, wobei die Schnittführung zur Teilung des Langholz-Rohholzes hier entlang von Schnittebenen erfolgt, welche im Wesentlichen parallel zu Tangentialebenen an eine Mantelaußenfläche des Langholz-Rohholzes angeordnet sind;
• Fig. 14 bis Fig. 16 jeweils abgetrennte Seitenbretter in Schrägansichten von der Seite in einer Abfolge von Bearbeitungsschritten, um eine Schnittholzplatte nach dem erfindungsgemäßen Herstellungsverfahren zu erhalten;
• Fig. 17 in einer Seitenansicht die Bearbeitung eines Brettholzteils im Rahmen des erfindungsgemäßen Herstellungsverfahrens;
• Fig. 18 bis Fig. 22 jeweils abgetrennte Seitenbrettteile in Schrägansichten von der Seite in einer Abfolge von Bearbeitungsschritten, um eine weitere Ausführungsvariante einer Schnittholzplatte nach dem erfindungsgemäßen Herstellungsverfahren zu erhalten;
• Fig. 23 in einer Seitenansicht eine Schnittholzplatte mit Seitenbrettteilen, welche jeweils alternierend in neutraler Jahresringlage aneinander gelegt und miteinander verklebt sind;
• Fig. 24 in einer vergrößerten Darstellung den in Fig. 23 gekennzeichneten Ausschnitt A;
• Fig. 25 in einer Seitenansicht eine Schnittholzplatte mit Seitenbrettteilen, welche abweichend von der neutralen Jahresringlage mit einer Stoßstelle des Jahresringverlaufs aneinander gelegt und miteinander verklebt sind;
• Fig. 26 in einer vergrößerten Darstellung den in Fig. 25 gekennzeichneten Ausschnitt B;
• Fig. 27 in einer Seitenansicht von vorne eine Stirnseite eines konisch profilierten Seitenbretts vor dem im Wesentlichen mittigen Teilen und anschließenden Anordnen der beiden Seitenbrettteile in eine paarweise korrespondierende bzw. gegenseitig um 180° gedrehte und gestürzte Lage;
• Fig. 28 in einer Seitenansicht von vorne entsprechend Fig. 27 eine Stirnseite eines Seitenbretts, das allerdings gleich breit profiliert ist.

Further details, features and advantages of the invention will become apparent from the following explanation of exemplary embodiments schematically illustrated in the drawings. In the drawings show:

• Fig. 1 in a sectional view from the side of a longwood raw wood trunk with a known from the prior art division pattern for the division of Seitenbrettware;
• Fig. 2 to Fig. 5 in each case one longwood raw wood trunk in lateral sectional views in a sequence of individual processing steps of the production method according to the invention;
• FIG. 6 to FIG. 9 in each case a long wood raw wood trunk in lateral oblique views in a sequence of individual processing steps of the manufacturing method according to the invention, wherein a cut is made to divide the long wood raw wood along cutting planes, which are arranged substantially parallel to the longitudinal axis direction of the long wood raw wood;
• 10 to FIG. 13 in each case a longwood raw wood trunk in oblique views from the side in a sequence of individual processing steps of the manufacturing method according to the invention, wherein the cutting guide for dividing the long wood raw wood here along cutting planes, which are arranged substantially parallel to tangent planes on a shell outer surface of the long wood raw wood;
• FIGS. 14 to 16 each side panel separated in oblique views from the side in a sequence of processing steps to obtain a lumber panel according to the manufacturing method according to the invention;
• Fig. 17 in a side view, the processing of a Brettholzteils in the context of the manufacturing method according to the invention;
• FIG. 18 to FIG. 22 in each case separated side-board parts in oblique views from the side in a sequence of processing steps, in order to obtain a further variant of a sawnwood plate according to the production method according to the invention;
• Fig. 23 in a side view of a sawn timber plate with side board parts, which are each placed alternately in neutral annual ring layer together and glued together;
• Fig. 24 in an enlarged view the in Fig. 23 marked section A;
• Fig. 25 in a side view of a sawn timber plate with side board parts, which are different from the neutral annual ring layer with a joint of the annual ring course together and glued together;
• Fig. 26 in an enlarged view the in Fig. 25 marked section B;
• Fig. 27 in a side view from the front a front side of a conically profiled side board in front of the substantially central parts and then arranging the two side board parts in a pairwise corresponding or mutually rotated by 180 ° and fallen position;
• Fig. 28 in a side view from the front accordingly Fig. 27 a front side of a side board, which however is profiled equally wide.

Fig. 1 shows a known from the prior art division of untrimmed long timber raw wood 1 with a forest edge 2 and a longitudinal axis 3. The long timber raw wood 1 has a raw wood length 4 and a raw wood outer surface 5. Here four side boards 40 are separated from the long wood raw timber 1, leaving a central square timber 60 with a substantially square cross-section and is available for other applications. Again Fig. 1 can be removed, in this conventional division process disadvantageously high material losses are accepted in order to work out the side boards 40 of the full timber long timber 1. These material losses can at best be processed into heating pellets and recycled.

The pictures Fig. 2 to Fig. 5 each show an unedged longwood raw wood trunk 1 in a sequence of individual processing steps of the manufacturing method according to the invention. As in Fig. 2 illustrated in a first step by a chip-removing device 100 in pairs opposing guide surfaces 11 and 12 or 13 and 14, which guide surfaces each have the same or different guide surface widths 15. The guide surfaces 11 to 14 serve to guide and as a support for the subsequent processing steps.

Likewise, it is provided within the scope of the invention, if necessary, to provide only two diametrically opposite guide surfaces on long timber raw timber 1. If, for example, plank, board or squared timber is used as long wood raw timber 1, which already has suitable planar guide surfaces as support for the subsequent processing steps, then this first processing step may also be omitted.

As in Fig. 3 1 relief grooves 20 with a relief groove depth 21 and a relief groove width 22 of a cutting or milling device 200 are shown on the provided with guide surfaces 11 to 14 long wood raw timber 1 relief grooves. The relief grooves 20 are here in a dash-dotted line of symmetry 17 of arranged two diametrically opposite guide surfaces 11 and 12 respectively. It is also conceivable, in a further processing step, to arrange relief grooves 20 in a dash-dotted plane of symmetry 18 of the two opposing guide surfaces 13 and 14. For this purpose, the long wood raw wood 1 is rotated about its longitudinal axis 3 by a rotation angle of 90 °.

Furthermore, profiles 30 are arranged on edge sections 16 of each guide surface 11 to 14 by a mold-cutting device 300. An adjustment angle 31 of the shape-cutting device 300 can be adapted to the radius of curvature of the forest edge 2, can be seen on the profiles 30 and is for example between 20 ° and 66 °. The production of the profilings 30 takes place here essentially simultaneously with the production of the relief grooves 20.

Subsequently, at the two opposite guide surfaces 11 and 12, two side boards 40 in a material thickness 42 and with a width 43 of the side board 40 in the longitudinal direction 44 along two substantially parallel cutting planes 46 separated from the long timber raw wood 1. The sectional planes 46 shown here are substantially parallel to one another and parallel to the longitudinal axis direction 3 of the long timber raw wood 1. For cutting off the two side boards 40, a cutting device 400 is used here Fig. 4 is indicated.

In this case, the shape-cutting device 300 has in each case two butt chamfers 32, which are provided on the two edges of the profiling 30. The Stoßfasen 32 serve that such profiled side boards 40 can be precisely adjusted during subsequent bonding to the profiles 30 and also do not slip each other during the transmission of lateral pressure during bonding. Optionally, one or more butt chamfers 32 may be arranged in the region of the oblique profiles 30.

As in Fig. 5 drawn after removal of the two side boards 40 of the central timber beam 60 more side boards 40, 41 along cutting planes 46, 47 or other long wood parts 70 - shown in broken lines - are separated along cutting planes 72. Fig. 5 further clarifies in a comparison, the increased yield of the manufacturing method according to the invention in comparison to that in Fig. 1 shown division pattern. The contours of in Fig. 1 shown side boards 40 are in Fig. 5 outlined in phantom in order to be able to contrast the yield increase of the side board cross sections 40, 41 obtained by the novel division method.

The pictures FIG. 6 to FIG. 9 each show a long wood raw log 1 in a sequence of individual processing steps of the manufacturing method according to the invention, wherein a cutting guide in Fig. 7 for the division of the long wood raw timber 1 along cutting planes 46 takes place, which are arranged substantially parallel to the longitudinal axis direction 3 of the long wood raw timber 1. The two side boards 40 are here separated at opposite guide surfaces 11, 12. Depending on the conicity of the processed long logs of lumber 1, guide surfaces 11, 12 are obtained which have different guide surface widths 15, 15 'and 15 "over the raw wood length 4. With a mean guide surface width 15, as in the longitudinal direction approximately in the middle of the raw wood length 4 of FIG Timber logs 1 is measured, the guide surface width 15 'at a tapered longitudinal end is smaller than the guide surface width 15 "at the opposite longitudinal end. At edge portions 16 of the two guide surfaces 11, 12 each profiles 30 have already been attached before. Furthermore, in the middle of the two guide surfaces 11, 12 in the guide surface symmetry plane 17, relief grooves 20 have been produced, as in FIG Fig. 7 is illustrated. In the Fig. 9 shown side boards 40 each have a raw wood length 4 and a material thickness 42. A side board width 43 of the side boards 40 is - as well as the guide surface width 15 - also on the taper of the processed long logs raw timber 1 dependent and can be between a narrower side board 43 'at a tapered side board end and a relation to the middle side board width 43 enlarged side board width 43 "on The side boards 40 are dried after separation from the long timber raw wood 1.

The other pictures 10 to FIG. 13 show in each case a longwood raw wood trunk 1 in a sequence of individual processing steps of the production method according to the invention, the cutting guide for dividing the long wood raw wood here along cutting planes 77, 78 takes place which substantially parallel to tangent planes 75, 76 to a shell outer surface 5 of Langholz- Raw wood 1 are arranged. This version with mantelparallelen processing steps is particularly suitable for the recovery of untrimmed long timber raw wood 1 with a tapered over its raw wood length 4 perimeter or diameter. Thus, it is possible to win through parallelepiped cutting guide 77 and 78, even with tapered tree trunks Seitenbrettware 40 with approximately constant Seitenbrettbreite 43 and approximately constant guide surface width 15 over the entire raw wood length 4. The conicity of the log 1 is in this cut further inward into the central Bending timber plank 61 projected, which then has a substantially wedge-shaped contour.

The pictures FIGS. 14 to 16 Each separated side boards represent 40 in a sequence of processing steps to obtain a lumber panel 90 according to the manufacturing method of the invention. Fig. 14 shows two side boards 40 after drying that are not split lengthwise. The two side boards 40 of the same long wood raw timber trunk 1 are sorted in pairs and placed by mutual rotation by 180 ° and Spend in toppled layers suitable to each other, as in Fig. 15 is shown.

The side boards 40 are coated in the longitudinal direction 44 along their edges 30 provided with profiles edge portions 16, which now form butt joints 30, with adhesive 80 and bonded together under lateral pressure, preferably with additional surface pressure. Thus, a single-ply lumber panel 90 having a lumber panel width 91 and a lumber panel length 92 is obtained. The sawn timber plate length 92 essentially corresponds to the raw timber length 4. The sawn timber plate 90 can, if necessary, be trimmed at its edges.

Like the pictures Fig. 9 and Fig. 14 it can be seen, the relief groove 20 has a relief groove depth 21 of less than 50%, preferably less than 40%, of the material thickness 42 of a side board 40. The relief groove 20 has a relief groove width 22, for example, of 3 mm.

Fig. 17 shows in a side view the processing of a long wood part 70, for example a Brettholzteils 70, in the context of the manufacturing method according to the invention. As mentioned at the beginning, the term long timber raw wood 1 also means at least partially unedged screed, board and / or squared timber. When here in Fig. 17 shown Brettholzteil 70 are no guide surfaces available, so here with known centering such as Scherenzentriervorrichtungen a Besaumautomaten the Brettholzteil 70 centered on the tree edges 2 and preferably measured and the best possible positions for the profiles 30 at the two edge portions 16 of the Brettholzteils 70 and a relief groove 20 are determined substantially in the middle of the board. Subsequent to the production of the profiles 30 and the relief groove 20, the profiled side board is dried and can then also be processed to a lumber plate 90.

The pictures FIG. 18 to FIG. 22 show each separated side board parts 50 in a sequence of processing steps to obtain a further variant of a sawn timber plate 90 according to the manufacturing method of the invention. Here, starting from an in Fig. 18 shown, already dried side board 40 this guided along its profiling 30, if necessary, positively centered and nachprofiliert, in order to be able to be guided particularly accurately to the nachprofilierten profile surfaces and divided along a dividing section surface 56 by means of a dividing device 500. The division cut surface 56 extends in a central side board symmetry plane 48, in which substantially also the relief groove 20 is located. Thus, the relief groove 20 serves in a further parts of the side board 40 in two side board parts 50 at the same time as a guide or orientation of the dividing device 500, for example a circular saw. The nachprofiled profile surfaces can serve as adhesive surfaces for the subsequent bonding of the board parts as a result and without additional, further processing step already.

In Fig. 19 the two side board parts 50 are already shown divided along the dividing cut surface 56. Analogous to the pictures FIGS. 14 to 16 are also shown here in the pictures FIGS. 19 to 22 the two side board parts 50 suitably arranged side by side by twisting by 180 ° and / or moving into fallen layers, coated with adhesive 80 to the adjacent profiles 30 and the division cut surfaces 56 and under lateral pressure and preferably with surface pressure together to a lumber panel 90 glued. Within the scope of the invention, undivided side boards 40, 41 as well as divided side board parts 50, 51 can be adhesively bonded together to form a sawn timber plate 90.

Fig. 23 shows a side view of a sawn timber plate 90 with side board parts 50, which are each placed alternately in neutral annual ring layer 95, 96 together and glued together.

Fig. 24 shows in an enlarged view the in Fig. 23 marked section A. By suitable, alternating juxtaposition of paired side panels 40 and / or paired side board parts 50 and subsequent bonding 80, a lumber plate 90 is produced with a particularly advantageous structure. The side board parts 50 are each here in pairs alternately at the oblique joints 30 in neutral annual ring position 95 and the straight pitch-cut surfaces 56 also in neutral annual ring layer 96 laid together glued together 80. At the glued together oblique joints 30 extend the oblique Profilings thus substantially tangentially to the annual rings 95 of the side boards or side board parts 50. At the straight joints 56, to which each division-cut surfaces 56 are glued together meet the annual ring layers 96 of the two joining partners each at a substantially right angle to the division -Cutting surfaces 56 and on the impact surface, wherein the neutral annual ring curves 96 extend in opposite directions in opposite directions. Due to the harmonic arrangement always pairwise associated board partner 50, which are adjacent here either alternately at their butt joints 30, or their division-sectional surfaces 56 adjacent or glued together, a uniform wave-shaped, neutral course of the annual ring layers 95, 96 on the sawn timber 90th scored and warping the finished lumber panel 90 largely avoided.

Fig. 25 illustrates a front side of a lumber plate 90 with side board parts 50, which was deviated at a joint 97 of the neutral annual ring position and at this a joint 97 adversely adjacent side board parts 50 with an annual ring course without neutral annual ring layer are placed together and glued together.

Fig. 26 shows in an enlarged view the in Fig. 25 marked section B. At this juncture 97 of the harmonic wave-alternating course of the annual rings is broken and the side board parts 50 are without deliberately taken on a neutral annual ring position connected to each other, which by the further curved course of the annual rings of this joint 97 away in the same Direction of the adjacent joining partners can be seen. Thus, this lumber plate 90 will at least disadvantageously at least buckle at the joint 97 without neutral annual ring position or cracks will form on the bonded division cut surface 56 in the region of the joint 97, which leads to a weakening of the lumber plate 90. The other connection points, in which the side board parts 50 are connected to each other in neutral annual ring position, are referred to as joints 96.

Fig. 27 shows an end face of a conically profiled side board 40 in front of the substantially central parts along the Seitenbrettsymmetrieebene 48 and the subsequent arrangement of the two Seitenbrettteile 50 in a pairwise corresponding or mutually rotated by 180 ° and fallen position. Due to the conically profiled side board 40, the middle side board width 43 varies between a smaller side board width 43 'at the tapered side board end and an enlarged side board width 43 "at the opposite longitudinal end 44 in the longitudinal direction Side boards 40. Likewise, then after dividing the divided side board parts 50 in the longitudinal direction 54 each have different widths 53, 53 'and 53 "on.

Fig. 28 shows similar to Fig. 27 also a front side of a side board 40, but this side board 40 is profiled here in parallel. Advantageously, therefore, the undivided side board 40 has a lateral board width 43 that is substantially the same in the longitudinal direction 44. Likewise, then after dividing the divided side board parts 50 in the longitudinal direction 54 each have substantially equal widths 53.

List of position signs:

1

Long wood, undressed

2

wane

3

Longitudinal axis of the long wood

4

Rohholzlänge

5

Rohholzaußenfläche

11-14

first to fourth guide surface

15

Guide surface width (or 15 ', 15 ")

16

Edge portion of the guide surface or the side board

17, 18

Symmetry plane of the guide surfaces

100

Chip removing device

20

relief

21

Entlastungsnuttiefe

22

Entlastungsnutbreite

200

Cutting or milling device

30

Profiling, butt joint

31

setting angle

32

Stoßfase

300

Shape-cutting device

40, 41

side board

42

Material thickness of the side board

43

Width of the side board (or 43 ', 43 ")

44

Longitudinal direction of the side board

45

Face of the side board

46.47

cutting plane

48

Side board plane of symmetry

400

cutter

50, 51

Side board part

52

Material thickness of the side panel part

53

Width of the side board part (or 53 ', 53 ")

54

Longitudinal direction of the side board part

55

Face of the side board part

56

Division-sectional area

500

splitting device

60, 61

central timber screed

70

more long wood parts

72

cutting plane

75, 76

shell-parallel tangential plane

77, 78

parallel to the cutting plane

80

adhesive

90

Lumber plate

91

Lumber plate width

92

Lumber plate length

95

neutral annual ring layer in the profile bonding

96

Joint with neutral annual ring layer in the straight glue joint

97

Joint without neutral annual ring layer in the straight glue joint

Claims (11)

1. A method for producing timber boards (90) made from raw timber logs (1), characterized by a sequence of the following production steps:

   a. producing profilings (30) by means of a form cutting device (300) respectively on edge portions (16) of at least two opposite guidings surfaces (11, 12 or 13, 14, respectively), which are adjacent to a dull edge (2) of the at least in part non-edged raw timber logs (1), wherein the profilings (30) are disposed at the edge portions (16) of a guiding surface (11, 12 or 13, 14, respectively) preferably symmetrically to a guiding surface symmetry plane (17, 18), which guiding surface symmetry plane (17, 18) is oriented essentially perpendicularly to the opposite guiding surfaces (11, 12 or 13, 14, respectively) as well as essentially centrally to the respective guiding surface widths (15, 15', 15");

   b. producing at least one relieving notch (20) by means of a notching or milling device (200) at at least two opposite guiding surfaces (11, 12 or 13, 14, respectively), wherein the at least one relieving notch (20) is disposed essentially perpendicularly to the guiding surface (11, 12 or 13, 14, respectively);

   c. cutting off at least two lateral boards (40) at diametrically opposite guiding surfaces (11, 12 or 13, 14, respectively) by means of a cutting device (400) along cutting planes (46) respectively in the longitudinal direction of the raw timber log (1), thereby forming a central square-timber plank (60);

   d. optionally, cutting off further lateral boards (40, 41) and/or timber log parts (70) respectively in the longitudinal direction of the raw timber log (1) from the central square-timber plank (60);

   e. optionally, disposing and/or stapling the lateral boards (40, 41) respectively into a position that is pair-wise corresponding as well as rotated by 180° to each other and/or into a tilted position;

   f. subsequent drying of the lateral boards (40, 41) by storage in an evaporation promoting surrounding;

   g. preferably levelling and/or post-profiling the profilings (30) of the dried lateral boards (40, 41);

   h. preferably dividing the dried lateral boards (40, 41) into lateral board parts (50, 51) by applying a dividing cutting area (56) extending essentially in a central lateral board symmetry plane (48) of the lateral board (40, 41) by means of a dividing device (500);

   i. sorting the dried lateral boards (40, 41) and/or lateral board parts (50, 51), wherein non-divided lateral boards (40, 41) are suitably disposed adjacent to each other in particular by mutual twisting by 180° and/or bringing into tilted positions, so that the lateral board symmetry planes (48) thereof are aligned essentially in parallel to each other and/or already divided lateral board parts (50, 51) corresponding to each other in pairs are disposed next to each other such that the dividing cutting areas (56) thereof are aligned essentially in parallel to each other;

   j. applying adhesive (80) onto the edge portions (16) that are provided with profilings (30) of appropriately profiled lateral boards (40, 41) and/or appropriate lateral board parts (50, 51) and/or at dividing cutting areas (56) of the lateral board parts (50, 51);

   k. adhesively bonding the profiled edge portions (16) provided with adhesive (80) and/or dividing cutting areas (56) of laterally adjacently disposed lateral boards (40, 41) and/or lateral board parts (50, 51) under pressure, preferably under lateral pressure against the surfaces provided with adhesive (80), into a timber board (90) having a timber board width (91), wherein a timber board length (92) essentially corresponds to a raw timber length (4);

   l. optionally, trimming the entire timber board (90) at the longitudinal side edges in the longitudinal direction (44, 54) of the glued lateral boards (40, 41) and/or the lateral board parts (50, 51) to a selected timber board width (91) and/or trimming at the front surfaces (45, 55) of the glued lateral boards (40, 41) and/or the lateral board parts (50, 51) transversely to the longitudinal direction (44, 54) thereof into a selected timber board length (92) by means of at least one cutting device.
2. A method according to claim 1, characterized in that initially before producing profilings (30) there are formed at least two diametrically opposite guiding surface (11, 12 or 13, 14, respectively) at a dull edge (2) of the non-edged raw timber log (1) by means of a flake removing device (100), wherein guiding surfaces (11, 12 or 13, 14, respectively) opposite to each other are disposed respectively in the longitudinal direction of the raw timber log (1) and have a guiding surface width (15, 15', 15").
3. A method according to claim 1 or 2, characterized in that a relieving notch (20) is disposed essentially centrally in the guiding surface symmetry plane (17, 18) of the guiding surface (11, 12, 13, 14).
4. A method according to any of claims 1 to 3, characterized in that the at least one relieving notch (20) has a relieving notch depth (21) of less than 50%, preferably less than 40%, of a material width (42) of a lateral board (40, 41).
5. A method according to any of claims 1 to 4, characterized in that, after cutting off at least two lateral boards (40) at diametrically opposite guiding surfaces (11, 12), the central square-timber plank (60) is rotated about its own longitudinal axis (3) about a rotational angle of 90° and two further diametrically opposite guiding surfaces (13, 14) are disposed laterally at the central square-timber plank (60), wherein the further opposite guiding surfaces (13, 14) are each disposed in the longitudinal direction of the central square-timber plank (60) and each have a guiding surface width (15, 15', 15"), wherein further profilings (30) are produced at the edge portions (16) of the two opposite guiding surfaces (13, 14) and the profilings (30) are disposed at the edge portions (16) preferably symmetrically to a guiding surface symmetry plane (18), which is oriented essentially perpendicularly to the opposite guiding surfaces (13, 14) as well as essentially centrally of the respective guiding surface widths (15, 15', 15"), as well as at least one relieving notch (20), which is disposed essentially perpendicularly to the guiding surface (13, 14) is produced at the guiding surfaces (13, 14), whereupon two further lateral boards (41) are cut off of the central square-timber plank (60) at the diametrically opposite guiding surfaces (13, 14) along cutting planes (47) respectively in the longitudinal direction of the raw timber log (1).
6. A method according to any of claims 1 to 5, characterized in that the production of profilings (30) respectively at edge portions (16) of the at least two opposite guiding surfaces (11, 12 or 13, 14, respectively) as wells as the production of the relieving notches (20) on at least two diametrically opposite guiding surfaces (11, 12 or 13, 14, respectively) is carried out essentially simultaneously.
7. A method according to any of claims 1 to 6, characterized in that the raw timber log (1) is surveyed before the processing and/or before the production of the relieving notches (20) and/or before the production of the profilings (30) at the edge portions (16) and/or before the cutting off of the lateral boards (40, 41) and/or optionally before the cutting off of further timber logs (7) of the central square-timber plank (60) by means of a surveying device.
8. A method according to claim 7, characterized in that the surveying data acquired by the surveying device are supplied to a control device and are then used by it to control the flake removing device (100) and/or the notching or milling device (200) and/or the form cutting device (300) and/or cutting devices (400) and/or the dividing device (500).
9. A method according to any of claims 1 to 8, characterized in that opposite guiding surfaces (11, 12 or 13, 14, respectively) are each disposed essentially in parallel to each other as well as essentially in parallel to the longitudinal axis (3) of the raw timber log (1) and that a cut for dividing raw timber logs (1) into lateral boards (40, 41) and/or into timber log parts (70) is made alongside of cutting planes (46, 47, 72), which are essentially in parallel to the longitudinal direction of the raw timber (1).
10. A method according to any of claims 1 to 8, characterized in that guiding surfaces (11, 12 or 13, 14, respectively) opposite to each other are disposed essentially in parallel to one of the two diametrically opposite tangential planes (75, 76) at the tapering raw timber outer surface (5) of the raw timber log (1), wherein optionally there is produced by means of the flake removing device (100) a first guiding surface (11 or 13, respectively) in parallel to the first tangential plane (75), starting at the outside, as well as a further second guiding surface (12 or 14, respectively) in parallel to the second tangential plane (76) that is opposite to the first guiding surface (11 or 13, respectively) and that subsequently the raw timber log (1) is divided by a cut made along cutting areas (77, 78), which are in turn essentially in parallel to one of the two diametrically opposite tangential planes (75, 76) and/or the opposite guiding surfaces (11, 12 or 13, 14, respectively), into lateral boards (40, 41) and/or into timber log parts (70) along the cutting areas (77, 78), whereby there is obtained a tapered wedge-like central square-timber plank (61).
11. A method according to any of claims 1 to 10, characterized in that for the lateral boards (40, 41), the profilings (30) are carried out in the form of two inclined flat surfaces that are essentially symmetrical to the guiding surface symmetry plane (17, 18), which are each selected at an incidence angle (31) of the profilings (30) as close to the circumference of the external surface (5) of the raw timber log as possible and that the profilings (30) are produced by means of flake removing tools, preferably milling devices, pulling end milling cutters or by rotating circular saw blades, thereby forming at least one end-to-end bevel (32).

Images