FI123149B - - Google Patents

Description

Method and apparatus for machining and splitting logs into pieces of wood

The invention relates to a method according to the preamble of claim 1 for machining and dividing a log into pieces of wood.

The invention also relates to apparatus according to the preamble of claim 3 for machining and dividing the log into pieces of wood.

The conventional known logging and splitting saw line operates as follows. In the first step, the peeled log is measured three-dimensionally, e.g. with an optical 3D meter, whereby its geometric shape can be accurately determined. In this case, information is collected e.g. log diameter, taper, oval and 10 loops. The log measurement data is stored in a control unit or the like and is utilized for processing and dividing the log into pieces of wood. Thereafter, the log is rotated, if necessary, with a suitable rotating device for an optimum position for the saw machine or the corresponding woodworking machine for the saw line. The first woodworking device is usually a plain chipper, which is fed centrally to the log, and which aligns the two opposite sides of the log, while chipping the separated log surface. In this case, the subsidies are made up only. In the next step, the plain is turned so that its leveled straight surface is facing down against the conveyor. The plain is then centered on the second plain chopper, where its two opposed untreated surfaces are basically aligned in the same way as in the treatment of the previous 20 first plain chippers. This alone creates a beacon with four flattened sides. The beam is at least partially incomplete so. at least a portion of its longitudinal angles being the curved surface of the original log.

The beam is measured, after which the delimitation of the side boards and slicing of the side boards ^ is optimized by the control unit. The optimization defines the dimensions of the boards on the side of the beam, in particular the width of the boards, the required height position ό and the direction of the profiling work. In the next step, the beam is machined by a suitable profiling machine, whereby the edge of the beam is optimally machined off. The profiled beam is then sawn off the first side boards using a suitable saw machine, preferably a circular saw. In front of the saw machine, there is the first o 30 servo-controlled side roller in front of the saw to position Parru in the correct position on the saw.

§ In the next step, the remaining part of the beam is rotated 90 degrees with the help of the next translator in the saw line 5, and the beam is again fed to the profiling machine,

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which optimizes the edges of Parru for other sideboards. The rest of the Parru is then chopped into a piece of wood with a suitable saw, such as a jigsaw. There is another servo-controlled pair of front rollers in front of the divider 2 to guide Parru in the correct position on the saw machine.

The problem with sawing lines such as the above is that they are long lines of structure. In the sawing line, the various steps of the operation require their own unit, the length of which is in principle equal to the maximum length of the log to be processed. The disadvantage is that such a long sawing line requires a lot of space, which is expensive to build.

The Finnish patent FI-73905 discloses a method and apparatus for cutting wood trunks, i.e. logs, from all sides into a processed wood product, such as boards and 10 drawings. The edges of the smoothed trunks of the four sides are milled rectangularly, then separated by sawing at least two side boards. In order to improve the surface quality of wood products, the milling heads of incomplete edges are equipped not only with a chopping blade but also with a circular saw blade, which provides a smooth sawn surface for narrow surfaces of side boards and dimensionally accurate side boards. The alignment of the four sides of the tree trunk can be accomplished as described, for example, in U.S. Patent No. 3,742,993.

Finnish patent FI-104316 discloses a method and apparatus for treating a tree trunk or log by cutting a tree trunk, measuring the log a three-dimensionally, transmitting data to the control unit and determining the log center processing center and sidewall processing center lines, followed by logging. First, the sides of the tree trunk are flattened with a simple chipper so that it has four flattened sides, that is, it is formed into a square beacon. The side boards are then machined to the opposite sides of Parru with specific milling cutter heads, whereupon any Parru edges are removed and the side boards are cut off from the beam. Alternatively, the side boards are sawn before the side boards are edged with 25 milling blades.

δ c \ j ό The problem with the solutions according to the above patents is e.g. in particular, it is attempted to align the four surfaces of the jamb's tree trunk with chopping blades close to each other. The leveling of the surface of the curved wood frame is difficult and useful wood is also lost in the process. The purpose of the method and apparatus according to the invention is to eliminate the problems associated with known sawing lines and / or plain chipping lines. It is also an object of the invention to provide a new method and apparatus capable of physically shortening a saw line or a similar log handling line and improving the yield of sawn timber, i.e., sawn wood.

3

The method according to the invention is characterized by what is set forth in claim 1. The apparatus according to the invention is characterized by what is set forth in claim 3.

Preferred embodiments of the method 5 and apparatus according to the invention are disclosed in the dependent claims.

In the method of the invention for machining and dividing a log into pieces of wood, the log is fed to a processing line and passed through the following processing steps: a) the log is measured in three dimensions to determine its geometric shape; (b) log measurement data are recorded, based on the measurement data of which the log processing is performed; 15 e) checking the position of the log and rotating the log so that any Lenko is upwards; d) aligning the first two vertical pages on the opposite sides of the logs, thereby making the log a first single having a first and a second vertical page (s1, s2);

According to the invention, the method further comprises e) machining the first and second grooves on the top and bottom edges of the first and only vertical sides of each of the planes 25, with one groove side of each groove bordering on the vertical side only. another sideboard; i

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o f) removing the sideboards most preferably by cutting the first plain sides only; whereupon o O) o g g) The remainder of the first plain, i.e. the second plain and the detached sideboards o are separated and the second plain is further processed.

In a preferred embodiment of the invention, after step e) above, the third and fourth grooves are machined at the top and bottom of each of the first vertical sides only, alongside the first and second grooves, with one groove side of the third and fourth grooves bordering the first the grooves are limited to the third and fourth side boards of the aligned sides only; and wherein said steps f) and g) are completed such that fl) most preferably remove all sideboards by sawing the first, merely vertical sides; followed by 10 gl) separating the remainder of the first plain, i.e., the second plain and all the detached sideboards, and transferring the second plain to further processing.

In the most preferred embodiment of the invention, the aforementioned sequential processing steps, in particular aligning the vertical sides into the logs, machining the grooves on the first sole and cutting off the sideboards from the first sole, are carried out on the processing line with the log being partially in one processing step. Thus, at least two successive processing steps are provided in an area of up to 20 logs in length, preferably at most 6 m.

An apparatus for processing and dispensing logs according to the invention, comprising a processing line in which the log is advanced by one or more conveyors and processed in the processing units within the processing line, mainly by processing programs stored in a suitable data processing unit, including:

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c3 (a) a log meter for measuring the log in three dimensions and storing the measurement results in a storage unit for optimizing log processing in g 30 in the data processing unit;

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(b) a log rotation device which is intended to rotate the log so that any Lenko is upwards; o m o o 35 (e) a first chipper having two chipping discs and / or a corresponding chipping means for machining the first two vertical pages of the chipper on opposite sides of the log and thereby making the log first; 5

According to the invention, the apparatus further comprises: d) a first profiling machine having first and second grooves to be machined top and bottom of the first vertical sides only, with one groove side of each groove limited to the vertical side defining at least the first aligned sides only and another sideboard; 10 e) a first saw unit for cutting the sideboards by cutting off the sides of the first plain line only; and f) a separating unit for separating the remainder of the first sole, the second sole and the sideboards, after which the sole alone is subjected to further processing.

In a preferred embodiment of the invention, the apparatus further comprises: el) a second profiling machine disposed after the first profiling machine in the log transfer direction, whereby the third and fourth grooves are to be machined on the upper and lower edges of the first vertical side and one groove side of the fourth groove is limited to the first and second grooves respectively, which delimit the third and fourth side boards only to the aligned sides; and 25 ^ fl) a second saw unit for cutting the third and fourth side boards by sawing off the vertical sides of the first only.

In the most preferred embodiment of the invention, at least some of the sequential processing units of the apparatus, in particular the first chipper, the first profiling machine and the first sawing machine, or alternatively said processing units and the associated second profiling machine and second sawing unit, are arranged that at least two successive log handling units 5 are arranged in an area not more than the length of the log.

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An advantage of the invention is that the processing line can be implemented as a short and efficient line. This saves on manufacturing and installation costs, and it is also cheaper to cover a short line than a long line.

It is also a special advantage of the invention that some of the central and important processing steps and processing units are preferably arranged in close proximity to each other, in particular successive processing steps / processing units in an area of up to 6 m in length.

In the following, the invention and other advantages thereof will be explained in more detail with reference to the accompanying drawing, in which Figure 1 is a block diagram of a method for working and sawing a log; Figure 2 schematically illustrates an apparatus for machining and sawing a log in accordance with the invention; and Figures 3a-3k show cross-sections of logs and merely various stages of processing thereof.

In the figures, like reference numerals are used for like parts.

The method of processing and dividing a log according to the invention into wood pieces is illustrated step by step in a block diagram in Figure 1. In the method, the log is supplied to the processing line 201 and passed through the following processing steps. In the first step a, the log T is measured 102 in a three-dimensional manner using a log meter such as a 3D optical meter (cf. Figure 3a). The geometry of the log 25, such as conicity, oval shape, and jogging, and, where appropriate, its position on the conveyor, is thus determined. In the second step b, the log data of logger T is stored 103. The log processing is optimized at various processing steps by a suitable data processing unit 202 which has pre-stored appropriate programs for performing the optimization. Optimization is generally defined as the maximum volume and / or value recovery of o 30 pieces of usable wood from logs.

§ In the third step e, the position of the log on the conveyor is checked and the log is rotated q with a rotating device so that any Lenko L (i.e. curved part) is up-

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(Fig. 3b). It should be noted that the logs may include portions curved in different directions perpendicular to the longitudinal plane, whereby the portion of the curve 35 which is generally inverted and having the greatest curvature between the ends of the logs is generally rotated. In the fourth step d, the log is fed to a suitable first machine tool where the first two vertical and most preferably substantially straight sides, i.e. the first side second s1, s2, are flattened into 105 logs on opposite sides thereof, making the first first P1 (Fig. 3c).

5

According to the invention, the process further comprises at least the following steps e, six, f and seventh g. In the fifth step e, the first and second grooves ull, u21; ul2, u22 are machined 106 at the top and bottom of each of the vertical sides s1, s2 of first first P1 alone (Fig. 3d). Ull of each groove, 10 u21; ul2, u22 one career page usl, us2; us3, us4 is limited to the vertical side sl, s2 of P1 alone. Most preferably, the career ull, u21; ul2, u22 url page usl, us2; us3, us4 are at right angles to the side sl, s2 of P1 alone. Urilla ull, u21; ul2, u22 are limited to the aligned sides s1, s2 of P1 alone in at least the first and second straight side boards L1, L2 in a suitable direction. This is done optimally according to the log measurement data and the program of 15 data processing units. In the sixth step f, the sideboards L1, L2 are most preferably removed by sawing 107 of the vertical sides s1, s2 of the first P1 alone (Fig. 3e). Then, in the seventh step g, the remaining portion of the first P1 alone, i.e. the second P2 alone, and the detached sideboards L1, L2 are separated 108. The sideboards L1, L2 are dropped onto a suitable transverse conveyor 20 and taken to further processing of the sideboards. The second P2 alone is passed on to further processing 109 on processing line 201.

In a preferred embodiment of the invention, after the fifth step e, there is a further step e1, wherein the third and fourth grooves u31, u41; u32, u42 machining 106a on the upper and lower edges of the first and second grooves u1, u21 of each of the vertical sides s1, s2 of the first 25 only of P1; ul2, u22 in parallel (Figure 3f). Third and fourth career u31, u41; The u32, u42 are preferably machined with suitable cutter heads on the untreated bulk surface side of P1 alone. Third and fourth career u31, u41; u32, u42 one groove i ° vu us5, us6, us7, us8 is limited to the first and second grooves respectively ull, u21; i g 30 ul2, u22 and is preferably at right angles to the vertical side s1, s2 x only. In the third and fourth career u31, u41; u32, u42 are limited to the aligned sides s1, s2 of P1 alone and the third and fourth substantially straight side boards L3, L4. This g is optimized according to the log measurement data and the data processing unit program o.

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The sixth and seventh steps f and g to be performed after the additional step el are supplemented by the additional steps fl and gl. In a further step f1 of the sixth step f, all the sideboards L1, L2, L3, L4 are removed by sawing 107a from the vertical sides of the first PI alone with a suitable saw machine (Figure 3g). In a further step g of the seventh step g, the remainder of the first alone, i.e. the second P2 alone, and all the removed sideboards L1, L2, L3, L4 are separated 108, and in particular the second P2 alone is further processed 109.

5

In a preferred embodiment of the invention, the sequential processing steps, in particular the fourth step d, the fifth step e, the sixth step f and the seventh step g, or alternatively said processing steps and associated additional fifth step el, sixth step additional step f1 and seventh step additional gl , that the log T is partly in one processing step, while it is partly in the preceding processing step. The front end of the log T is then in one processing step, such as the fifth step e, where the grooves ull, u21; u12, u22 are machined to P1 alone, while the center (or at least the back end) of the log T is from the previous processing step, as in the fourth step d, where the vertical sides of the log T are aligned. Alternatively, the log T is simultaneously in three successive processing steps. Thus, the front end of the log T is, for example, in the sixth step f, whereby the sideboards L1, L2 (L3, L4) are removed by sawing the first vertical P1 alone from the sides s1, s2, the middle portion of the log T in the fifth step e. ul2, u22 (u31, u41; u32, u42) are machined with P1 alone, and the back end 20 of the log T in the fourth step d where the vertical sides of the log are aligned. In this embodiment of the invention, it is essential that at least two successive steps of log handling are provided in an area A of maximum log length, preferably between 5 and 7 m, most preferably 6 m.

In a preferred embodiment of the invention, the further processing 109 of the second P2 alone comprises at least the following four successive steps: from the eighth to the eleventh. In the eighth step h, the second P2 alone is measured and inverted 110 cti to one flattened side s10 (or s20), i.e. the second P2 alone is rotated 90 degrees i5 (Fig. 3h). The measurements of the second P2 alone verify the dimensions alone, and in particular g 30 for the incident sides s1, s2. In the ninth step i, the second P2 alone is fed x to a suitable second machine and the untreated opposite sides of the second P2 alone are substantially aligned to the third and fourth sides s3, s4 (Fig. 3i). Thus, the other sole P2 is made into a substantially rectangular beam P3, the edges of which are generally at least partially incomplete. In the tenth step 35, the grooves u8, u9, ulO, ull are machined to the four sides, i.e. edges, of the four sides of Parrun P3, delimiting the vertically aligned third and fourth side side boards (Fig. 3j). In the eleventh step, the side boards L5, L6 are removed from the vertical sides of the beam by sawing, and preferably the beam that remains 9 mm at the same time is sawn into 113 suitable pieces of wood by a suitable saw machine (Fig. 3k).

The apparatus for working and sawing the log according to the invention is illustrated in Figure 2, fig. 2. The cross-sectional view of the log T, the PI alone, the P2 and the barrel P3 after operations with different processing units is also apparent from Figures 3a-3k.

The apparatus according to the invention for shaping and dividing the log wood elements 10 comprises a processing line 201, which block the T is moved forward (arrow B direction shown), one or more conveyors 2011. The log T is treated in the processing line 201 within the processing units mainly suitable data processing unit 202, such as a computer, stored according to processing programs, the primary goal is to optimize log handling to maximize the yield of log pieces 15. The processing units of this apparatus comprise at least the following units: log gauge 203, log rotating device 204 and first log chopper 205. According to the invention, the apparatus further comprises at least the following processing units: first profiling machine 206, first saw machine unit 207 and separator unit 208. the processing line for 20 consecutive periods in the most preferred order.

A log gauge 203, such as an optical 3D gauge, is a device for measuring log T in a moth dimension (cf. Fig. 3a). The log gauge is used to measure, for example, the cross-sections of the log in the longitudinal direction of the log at appropriate short distances. The geometrical shape of the log, such as conicity, oval shape and looping, is then determined. At the same time, the T position and position of the log on the conveyor 2011 are also indicated. The dimensions of log T are stored in a suitable memory unit 2021, most preferably in connection with the data processing unit 202.

The log rotation device 204 is a device for rotating the log so that any possible Lenko L is upward (Fig. 3b). This is the position in which the log T * is treated in the following processing unit, o 0) g The first plain chopper 205 preferably comprises two chipping discs 205a, o 35 205b and / or corresponding chipping means. With the first plain chopper 205, the first two vertically substantially straight sides, i.e. the first side and the second side s1, s2, are machined into the logs T on opposite sides thereof, thereby making the logs the first plain P1 (Fig. 3c).

10

Preferably, the first profiling machine 206 comprises four machining heads. The first and second grooves ull, u21; ul2, u22 are machined longitudinally at the top and bottom of each of the five vertical sides s1, s2 of the first P1 alone (Fig. 3d). Ull of each career, u21; ui2, u22 one groove side usl, us2, us3, us4 is arranged to be limited to the vertical side of P1 alone and at right angles to this side. The first and second grooves define at least the first and second substantially straight side boards L1, L2 on the aligned sides s1, s2 of P1 alone. Most preferably, the position and dimensions of the sideboard L1, L2 are determined in accordance with the information obtained from the log meter 203 and the processing program stored in the data processing unit 202.

The first saw machine 207 comprises suitable blade units 207a, 207b for cutting the side boards L1, L2 by sawing off the vertical sides s1, s2 15 of the first sole P1 only (Fig. 3e).

The separation unit 208 comprises e.g. a side-free conveyor 208a, such as a conveyor chain, which is parallel to the processing line 201. Hereby, the side boards L1, 12 are arranged to fall on the transverse side board conveyor 208b beneath the conveyor 208a under the effect of gravity while the second mere P2 is advanced for further processing by the conveyor 208a and the processing line 201.

In a preferred embodiment of the invention, the apparatus further comprises a second profiling machine 2061 and a second saw unit 2071.

25

The second profiling machine 2061 preferably comprises four machining heads. The second profile machine 2061 is provided after the first profile machine 206 in the direction T of the log T in the four working ends of the second profile machine 2061 with the third and fourth grooves 5 u31, u41; u32, u42 are machined to the upper and lower edges of the first and second grooves u1, u21 of each of the vertical sides i g 30 of the first single P1 alone; u2, u22 parallel to x, particularly to the untreated surface side of P1 alone (Fig. 3f). Third and fourth career u31, u41; u32, u42 one groove page us5, us6, us7, us8 bordering on the first section and the other groove ull, u21, respectively; ul2, u22 and is preferably at right angles o to the vertical side s1, s2 only. In the third and fourth ^ 35 career u31, u41; u32, u42 are limited to just aligned sides sl, s2, the third and fourth straight side boards L3, L4. Again, the position and dimensions of the sidewall L3, L4 are most preferably optimized based on the information received from the log gauge 203 and the processing program stored in the data processing unit 202.

11

The second saw unit 2071 comprises suitable blade units 2071a, 2071b. It is arranged after the first saw unit 207 in the log T transfer direction B. Alternatively, the first and second saw units 207, 2071 are combined into one saw-5 machine unit comprising blade units 207a, 2071a, 207b, 2071b. With the blade units 2071a, 2071b of the second saw unit 2071, the third and fourth side boards L3, L4 are cut by cutting off the vertical sides of the first sole P1, most preferably immediately after cutting the first and second side boards L1, L2 (Fig. 3g).

In this embodiment of the invention, the saw unit 207, 2071 is followed by the separator unit 208 of the log T in the displacement direction B; 208a. By means of this processing unit, the remainder of the first alone, i.e. the second P2 alone, and the detached sideboards L1, L2, L3, L4 are separated from each other, and in particular the second P2 alone is forwarded for further processing on the processing line 201.

15

In the most preferred embodiment of the invention, at least some of the sequential processing units of the apparatus, in particular the first chipper 205, the first profiler 206 and the first saw unit 207 or alternatively said processing units and associated second profiler 2061 and second saw unit 20 2071, are arranged that at least two successive log handling units are arranged in an area of maximum log length up to 6 m. The log T is then partially processed on the processing line 201 while being partially processed on the preceding processing unit. The front end of the log T is then in one processing unit, such as the first profiling machine 206, with grooves ull, u21; u21, u22 are machined to P1 alone, while the central portion (or at least the rear end) of log T is in an upstream processing unit such as the first log chopper 205, c3 where log T is aligned with vertical sides s1, s2. Alternatively, the log T is at the same time in three consecutive processing units. In this case, the front end of the log T is i g 30, for example, in the first saw unit 207, where the side boards L1, L2 are removed x by sawing the vertical sides of the first P1 alone, the log T center in the first profiling machine 206; The u21, u22 are machined with P1 only, and the rear end of the turn kin T in the first plain chopper 205, where the vertical βίο vats are leveled.

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In a preferred embodiment of the invention, the apparatus comprises processing units suitable for further processing of second P2 alone on processing line 201. Further processing of the second P2 only is performed by at least the following processing units: measuring device 209a, 12 rotating device 209b, second chipper 210, two opposed aligned sides s10, s20 remaining on side boards L1, L2; After separating L3, L4 to the sides only. The measuring device 209a checks the dimensions of the second P2 alone when the sideboards L1, L2 (and possibly L3, L4) have been removed and separated and the measurement data (preferably stored and) provided to the data processing unit 202 to verify the optimization of the P2 alone. When the second P2 alone is subjected to further processing, it is first rotated by the rotating device 209 90 degrees to its flattened side s10 (or s20) and the conveyor 2011 (Fig. 3h). Thereafter, the second plain-10 ka P2 is fed to the second plain-chopper 210 having two chopping discs 210a, 210b and / or corresponding chopping means. By means of a second chopper 210, the untreated opposite sides of the second sole P2 rotated are aligned and machined into substantially vertical third and fourth sides s3, s4, thereby making the second sole P2 essentially a quadrilateral beam P3 (Fig. 3i). From the second plain-15 brawler 210, the braid P3 is fed to the Beam profiling machine 211, which preferably comprises four machining heads. Suitable grooves u8, u9, ulO, ull are machined to the four sides of the beam, i.e. the edges, to define the vertical third and fourth sides, respectively, of the fifth and sixth side boards L5, L6 (Fig. 3j). This produces a profiled beam P3. Advantageously, the position and dimensions of the sideboard L5, L6 are determined (as most preferably also the division of the entire Parru P3 into pieces of wood) most optimally according to the data obtained from the log meter 203 and the processing program stored in the data processing unit 202. The profiled beam is fed to the Parru saw machine unit 212, which cuts off the side boards L5, L6 from the vertical sides of the Parru, and preferably also the remaining beam is cut with the same saw unit 25 into suitable pieces of wood (Fig. 3k). The beam saw unit 212 comprises, for example, a circular saw, a band saw or the like.

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It should be noted that the above apparatus according to the invention is schematically illustrated and shows only the processing steps g 30 and the processing units which are essential for the invention. Devices, such as control roller units, for transporting the log, plain and / or Parru to the various processing units, such as control units, are not shown.

o σ> § The invention is not limited to the above embodiment only, but

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5 many modifications are possible within the scope of the inventive idea defined by the claims.

Claims (4)

13 A method for machining and dividing a log into pieces of wood, the log being fed (101) to a processing line (201) and advancing through the following processing steps: a) measuring (102) the log (T) in three dimensions to determine its geometric shape; B) storing (103) the log (T) measurement data on the basis of which log processing is performed; c) checking the position of the log (T) and rotating (104) the log (L) upwards; D) aligning (105) the first two vertical sides on the opposite sides of the logs (T), thereby making the logs a first plain (P1) having first and second vertical sides (s1, s2); E) the first and second grooves (ull, u21; ui2, u22) are machined (106) at the top and bottom of each vertical side (s1, s2) of each of the first single sides (P1); one groove page (usl, us2, us3, us4) is limited to the vertical side only, which delimits the grooved pages to at least the first and second sideboards (L1, L2); F) detaching (107) the side boards (L1, L2) most preferably by sawing the first vertical sides only; after which δ cv i 5 g) the remainder of the first sole, i.e., the second sole (P2) and the detached sidewalls 30 (L1, L2) are separated (108) and the second sole is further processed (109), CL g characterized in that, in the method, successive processing steps, in particular leveling the vertical sides into the logs (d), machining the grooves into the first plain (e; ° 35 el) and removing the sideboards by sawing the first plain (f; fl), (T) is partially in one treatment step while it is in part in a preceding treatment step. 14 Method according to claim 1, characterized in that after step e) the third and fourth grooves (u31, u41; u32, u42) are machined (106a) on the top and bottom of each of the vertical sides (s1, s2) of the first 5 (P1) only. below the first and second grooves (ull, u21; ui2, u22) with one groove side (us5, us6, us7, us8) of the third and fourth grooves (u31, u41; u32, u42) bordering the first and second grooves respectively limiting the third and fourth sideboards (L3, L4) to aligned pages only; and wherein steps 10 f and g are completed such that fl) all side boards (L1, L2, L3, L4) are detached (107a) most preferably by sawing the first side only; followed by 15 g) separating (108) the remaining portion of the first alone, i.e., the second sole (P2) and all the detached sideboards (L1, L2, L3, L4), and then transferring the second sole alone to further processing (109). Apparatus for processing and splitting logs into pieces of wood, the apparatus 20 comprising a processing line (201) in which the log (T) is advanced by one or more conveyors (2011) and processed in processing units within the processing line mainly by processing programs stored in a suitable data processing unit (202) the processing units comprising: 25 a) a log meter (203) for measuring the log (T) in three dimensions and storing the measurement results in a memory unit (2021) for optimizing the log concept in the data processing unit (202); δ c \ j i ° b) a log rotation device (204) for rotating the log so that any possible Lenko (L) is up; XX c) a first chipper (205) having two chipping discs (205a, g 205b) and / or a corresponding chipping means having the first two first vertical pages, the first and second pages (s1, s2), of the chipper 35; machining the logs on opposite sides thereof to make the log first plain (P1); D) a first profiling machine (206) for machining the first and second grooves (ui 1, u21; ui2, u22) at the top and bottom of each vertical side (s1, s2) of the first sole (P1) such that each groove (ull, u21; ul2, u22) one groove side (usl, us2, us3, us4) is limited to the vertical side only, whereby the first and second side boards (L1, L2) are delimited by the grooves only to the aligned sides; e) a first saw unit (207) for cutting the side boards (L1, L2) by cutting off the vertical sides (s1, s2) of the first sole (P1); 10 and f) a separating unit (208) for separating the remaining portion of the first, i.e., the second (P2) alone and the detached sideboards (L1, L2), after which the mere is transferred to further processing, characterized in that at least a portion of the of the units, in particular the first chopper (205), the first profiling machine (206) and the first sawing machine (207), are arranged close to the processing line (201) so that at least two successive log processing units are arranged in 20 areas (A) is not more than the length of the log (T). Apparatus according to claim 3, characterized in that the apparatus further comprises: 25) a second profiling machine (2061) for machining the third and fourth grooves (u31, u41; u32, u42) in each of the first vertical directions (P1) only. the top and bottom of the side (sl, s2) alongside the first and second grooves (ull, u21; c3 u21, u22), with the third and fourth grooves (u31, u41; u32, u42) i5 one groove page (us5, us6, us7) , us8) is limited to the first and second grooves, respectively (ull, u21; ul2, u22) delimiting the grooves (u31, u41; u32, u42) to the third and fourth sideboards (L3, L4) of the aligned sides only; and CL g fl) a second saw unit (2071) for cutting the third and fourth side boards (L3, L4) by sawing off the first vertical sides only. δ c \ j 35 16