Method for machining conical wooden workpieces, device for carrying out such a method and planing machine with such a device

Abstract

This method is used for processing conical wooden workpieces (1) that have longitudinal sides (2, 3) at angles to each other and which are curved along their length. A first planing tool (29) planes one longitudinal side (2) along the curvature of this longitudinal side (2), and a second planing tool (34) planes the longitudinal side (3) opposite in the transport direction along this curvature and superimposed with the desired taper. This is achieved by adjusting the second planing tool (34) relative to the first planing tool (29) perpendicular to the transport direction of the workpiece (1) as it passes through the workpiece (1). The longitudinal sides (2, 3) of the wooden workpiece (1) are planed in such a way that they remain curved after the planing process. Since the processing follows the curvature of the wooden workpieces (1), wood waste is minimal, thus achieving optimal wood yield.

Description

[0001] The invention relates to a method for processing conical wooden workpieces according to the preamble of claim 1, a device for carrying out such a method according to the preamble of claim 5 and a planing machine according to claim 10.

[0002] It is known to split logs into individual, board-shaped pieces of wood. These pieces are usually conical. Since the long sides of such pieces are rough and sometimes still contain bark, they are planed so that the pieces can be further processed, for example, to make wood carpets. In this process, two conical pieces of wood, rotated 180° relative to each other, are joined together with their long sides facing each other. The resulting pairs of boards have an approximately rectangular outline. These pairs are then joined together with their long sides facing each other to form the wood carpet, with the pieces being glued together along their long edges. From the wood carpet, panels, lamellae, and the like are then cut out.

[0003] Often, the unprocessed pieces of wood coming from the sawmill have a conical shape and curved long sides. These curved long sides are planed to create straight, angled edges, allowing two pieces of wood to be joined together to form a pair of boards. Removing the curvature of the long sides results in significant wood waste and therefore a reduced wood yield.

[0004] The invention is based on the objective of designing the generic method, the generic device and the planing machine in such a way that the conical wooden workpieces can be processed in such a way that only a little wood waste is produced and a high wood yield is achieved.

[0005] This problem is solved in the generic method according to the invention with the characterizing features of claim 1, in the generic device according to the invention with the characterizing features of claim 5 and in the planing machine with the features of claim 10.

[0006] The method according to the invention is characterized in that the curvature of the wooden workpieces is followed during processing. The longitudinal sides of the wooden workpiece are planed in such a way that these longitudinal sides remain curved after the planing process. Since the curvature of the wooden workpieces is followed during processing, wood waste from the processing is low, thus achieving optimal wood yield.

[0007] In this process, one long side of the workpiece is planed with a first planing tool along the curvature of that long side, and the opposite long side is planed with a second planing tool along the curvature of the first long side, superimposed with a desired taper by adjusting the second planing tool relative to the first planing tool perpendicular to the transport direction during the passage of the workpiece.

[0008] If a stylus is pressed against one long side of the wooden workpiece during processing, in conjunction with the joint adjustment of the two planing tools, it can be achieved that the curvature of the wooden workpiece can be reliably followed during workpiece processing.

[0009] To ensure precise and flawless processing, the wooden workpiece is advantageously measured before processing with regard to the curvature of its longitudinal sides and their taper.

[0010] The data characterizing the taper of the wooden workpiece are advantageously used here to control the planing tools.

[0011] In the device according to the invention, the planing tools are each mounted on a slide. Both slides are coupled by at least one drive unit and can be adjusted relative to each other by means of the drive unit. This allows the respective planing tool to be brought into the exact correct position relative to the wooden workpiece passing through the device.

[0012] A structurally simple design results if the two sliders can be moved on a common guide.

[0013] Advantageously, at least one pressure unit is arranged on one of the slides, which bears force against one longitudinal side of the wooden workpiece and presses or pulls a stylus against the other longitudinal side of the workpiece during processing. The pressure unit ensures that the stylus is always pressed or pulled against the workpiece as it passes through the device, thus guaranteeing proper guidance.

[0014] The feeler shoe is advantageously positioned in the transport direction of the workpiece, in front of the first planing tool. The feeler shoe allows the depth of cut to be set on one long side of the workpiece.

[0015] A more advantageous and cost-effective design is achieved when the drive unit is connected to a control system that receives data on the infeed width, taper, and chip removal on one longitudinal side of the workpiece. Based on this data, the control system directs the drive unit so that the corresponding planing tool can perform the necessary adjustment movements relative to the workpiece.

[0016] The subject matter of the application is not only defined by the subject matter of the individual patent claims, but also by all information and features disclosed in the drawings and the description. These are claimed as essential to the invention, even if they are not explicitly stated in the claims, insofar as they are novel, individually or in combination, compared to the prior art.

[0017] Further features of the invention will become apparent from the further claims, the description and the drawings.

[0018] The invention is explained in more detail using exemplary embodiments. These show Fig. 1 in top view a curved workpiece as supplied as raw material from a sawmill, Fig. 1a an example of a workpiece as sawn from a tree trunk, Fig. 2 the workpiece after Fig. 1 after a planing process according to the prior art, Fig. 3 the workpiece after Fig. 1 After planing according to the invention, Fig. 4 shows a schematic representation of how a curved workpiece is straightened by a press, Fig. 5 shows a schematic representation of the formation of a board carpet from adjacent workpieces, Figs. 6 to 8 show the process sequence for machining curved workpieces according to the inventive method and with an inventive device, and Fig. 9 shows a second embodiment of an inventive device in a representation corresponding to Fig. 6 , Fig. 10 in a representation accordingly Fig. 9 Another embodiment of a device according to the invention, Fig. 11 in a representation accordingly Fig. 9 Another embodiment of a device according to the invention, Fig. 12 in schematic representation a planing machine with a device according to the invention.

[0019] Fig. 1 Figure 1 shows a top view of a conical workpiece 1 made of wood, as delivered by a sawmill after sawing a tree trunk and undergoing a drying process. Due to the natural growth of the tree, the workpiece 1 has conical longitudinal sides 2, 3 along its length, and curved longitudinal sides 2, 3 due to residual internal stresses after sawing and the drying process. It is known to plane such a workpiece so that the longitudinal sides 2, 3 run linearly and conically relative to each other ( Fig. 2 ).

[0020] Fig. 3 Figure 1 shows the workpiece 1 after carrying out the method according to the invention. The longitudinal sides 2, 3 are further curved along their length and run towards each other in such a way that the width 4 of the workpiece 1 decreases from one end to the other.

[0021] In contrast to the usual procedure, the processing of the workpieces follows the curvature of the longitudinal sides 2, 3 of the workpiece 1.

[0022] Fig. 1a Figure 1 shows a workpiece as it has been sawn from a tree trunk. The workpiece is conical, as indicated by the taper angle of 45°. The two long sides 2, 3 each have a wane edge 46 and a guide surface 47, which is generally rough-sawn. The wane edges 46 are located in Fig. 1a top and the guide surfaces 47 below.

[0023] During the planing process, the sawn guide surfaces 47 are planed smooth, and the wane 46 present on the longitudinal sides 2, 3 are removed to such an extent that a glueable surface is produced. The workpiece 1 has a constant height or thickness along its length.

[0024] Fig. 4 shows schematically how the curved workpiece 1 according to Fig. 3 is straightened by a press.

[0025] Fig. 4 The image above shows the curved and planed workpiece 1 accordingly. Fig. 3 The press generates a pressing force 5, which is applied transversely to the longitudinal direction of the workpiece 1 on the longitudinal side 3. The workpiece 1 is supported on the opposite longitudinal side 2 by a support 6. This pressing process forces out the curvature of the workpiece 1.

[0026] A board carpet 7 is formed using the planed and flattened workpieces 1 ( Fig. 5 Every second workpiece 1 is rotated by 180°. Two workpieces 1 lying with their long sides against each other form a quasi-rectangular part 8, i.e., a pair of boards with an approximately rectangular outline. Several workpieces 1 arranged in this way, with their long sides against each other, form the board carpet 7.

[0027] To form the parts 8, conical workpieces 1 are joined together, which have the same or at least approximately the same taper angle. This taper of the workpieces 1 is defined by so-called taper classes, into which the workpieces 1 are classified according to their taper.

[0028] The workpieces 1 are joined together in a known manner, with their long sides touching, using an adhesive bond. This method of forming board carpets is generally known and therefore will not be explained in further detail.

[0029] The formation of the board carpets takes place in a known manner in presses, by generating a pressure force perpendicular to the longitudinal direction of the workpieces 1 from one long side in the board carpet plane.

[0030] The resulting board carpets 7 are then sawn into parallel lamellae or board panels, which can then be used, for example, to produce middle layers or top layers of multi-layer panels.

[0031] The workpiece 1 to be processed is placed on a feed table 9 ( Fig. 6 ) supplied to a device 10 forming part of a planing machine 48, in which the workpiece 1 is machined.

[0032] The planing machine 48 has the infeed table 9 ( Fig. 12 A machine table 42 is connected downstream of the feed table 9.

[0033] A feed system 53, which may be formed, for example, by feed rollers 49, table rollers 49', and the like, transports the workpieces 1 through the planing machine in the transport direction 13 and processes them during passage. Such a feed system 53 is designed in a known manner to convey the workpieces 1 through the planing machine 48 on a straight path and at a constant, adjustable feed rate.

[0034] In the area between the infeed table 9 and the machine table 42, there is a lower, horizontal planing tool 51, which smooths the underside of the workpiece 1 as it passes through the planer 48. The workpiece 1 is then fed to a subsequent upper, horizontal planing tool 52 to machine the top side of the workpiece 1. The machining with the planing tools 51 and 52 ensures that the underside, which rests on the infeed table 9 and machine table 42, and the opposite top side of the workpiece 1 are perfectly smooth.

[0035] The workpieces 1 then go to the device 10 and are machined on the long sides 2,3.

[0036] After passing through the device 10, the workpieces 1 can be machined again with an upper horizontal and then with a lower horizontal planing tool 54, 55.

[0037] In the following Figuren 6 bis 11 The infeed table 9 and the machine table 42 are schematically depicted as a single unit in the area in front of the device 10 and are labelled 9 / 42. For the sake of clarity, the tools 51, 52, 54, 55 and the feed system 53 are also not shown.

[0038] The workpiece 1 has two curved longitudinal sides 2, 3, which converge from the wider end 11 of the workpiece 1 towards its narrower end 12. During its transport on the infeed table 9 / 42 towards the device 10, the workpiece 1 rests with its longitudinal side 2 against a stop 14 extending in the transport direction 13. Due to its curved shape, the longitudinal side 2 rests against the stop 14 at two spaced-apart areas 15, 16.

[0039] The workpiece 1 is arranged on the feed table 9 / 42 such that the hollow side 2 points towards the stop 14 and, in the exemplary embodiment, the narrower end 12 of the workpiece 1 is at the front in the transport direction 13.

[0040] The workpieces 1 are fed in such a way that the wane edges 46 are on the bottom. The position of the hollow longitudinal side 2 against the stop 14 and the wane edges 46 on the bottom determines whether the narrow or wide end is at the front in the transport direction.

[0041] A pressure roller 17 rests against the curved longitudinal side 3 of the workpiece 1 and is pressed against this side 3 under a force. The pressure roller 17 can be pressed against the longitudinal side 3 of the workpiece 1, for example, by a spring or pneumatically.

[0042] The pressure roller 17 is known in itself and therefore will not be explained in more detail.

[0043] The pressure roller 17 is positioned according to the width of the workpiece 1 and its taper in the direction of arrow 18, so that it is ensured that the workpiece 1 is reliably pressed against the stop 14 by the pressure roller 17.

[0044] The device 10 has a right-hand slide 19 and a left-hand slide 20 in the transport direction 13. Both slides 19 and 20 are adjustable on a guide 21 transversely, preferably perpendicularly to the transport direction 13, as indicated by the arrows 24. In the exemplary embodiment, the guide 21 is formed by two parallel guide rails arranged on a machine stand 22.

[0045] With the aid of an adjustment unit 23, the left slide 20 can be moved along the guide 21 relative to the right slide 19. The adjustment unit 23 has a drive motor 25, which is arranged on the left slide 20. The drive motor 25 has a drive spindle 26 that extends over the right slide 19. A nut 27 is mounted on the drive spindle 26 and is fixed to the right slide 19. Depending on the direction of rotation of the drive spindle 26, the slide 20 is moved outwards or inwards transversely to the transport direction 13.

[0046] In the adjustment path of the right slide 19 there is a stop 28, by which the maximum adjustment path of the slide 19 is determined.

[0047] On the right-hand slide 19 is a right-hand tool 29, which is rotatably driven about a vertical axis 30. The axis of rotation 30 is perpendicular to the transport direction 13.

[0048] In the transport direction 13 in front of the tool 29, a sensing shoe 31 is located on the slide 19. With this, the dimension 33 of the chip removal on the curved longitudinal side 2 of the workpiece 1 is set.

[0049] A guide shoe 32 located behind the tool 29 in the transport direction 13 is adjusted so that it rests against the machined longitudinal side 2 of the workpiece 1.

[0050] A tool 34 is also mounted on the left slide 20 and can be driven to rotate about a vertical axis 35. The axis of rotation 35 is also perpendicular to the transport direction 13. The tool 34 is used to machine the left longitudinal side 3 of the workpiece in the transport direction.

[0051] The two tools 29, 34 are advantageously positioned next to each other at the same height in the transport direction 13, so that the machining forces act on the workpiece 1 on both longitudinal sides 2, 3 at approximately the same height and the geometric, dimensional accuracy is ensured in the method according to the invention.

[0052] In the transport direction 13, in front of the tool 34, a pressure shoe 36 is mounted on the slide 20. This shoe is loaded towards the workpiece 1 and is movable transversely to the transport direction 13, allowing it to compensate for variations in the raw wood. The pressure shoe 36 can, for example, be pressed against the longitudinal side 3 of the workpiece 1 by spring action or pneumatically.

[0053] In the transport direction 13 behind the tool 34, a guide shoe 37 is located on the slide 20, which can rest against the left longitudinal side 3 of the workpiece 1.

[0054] The two slides 19, 20 are coupled to each other via the adjustment unit 23. This allows the two slides 19, 20 to move freely together on the guide 21 when the workpiece 1 is being machined on its curved longitudinal sides 2, 3. That is, they can jointly follow the curvature of the passing workpiece 1.

[0055] Fig. 6 Figure 1 shows the workpiece 1 before it enters the device 10. On the feed table 9 or machine table 42, the workpiece 1 is fed to the device 10, being guided over the contact areas 15, 16 on the longitudinal stop 14.

[0056] Fig. 7 The figure shows the situation when the workpiece 1 enters the fixture 10. The workpiece 1 runs with its narrower end 12 onto the probe shoe 31 and the pressure shoe 36. Since the probe shoe 31 is fixed in its respective position relative to the adjacent tool 29, the two slides 19, 20 are moved as a unit along the guide 21 during machining, corresponding to the curvature of the longitudinal sides 2, 3 of the workpiece 1 to be machined.

[0057] During the entry of the workpiece 1 into the device 10, the pressure roller 17 continuously presses the workpiece against the longitudinal stop 14, ensuring that the workpiece can be fed smoothly into the device 10. It is then picked up by the feed system 53 and transported in a straight line through the device 10 as described.

[0058] The probe shoe 31 is designed and the longitudinal stop 14 is arranged such that the end 12 of the workpiece 1 hits the probe shoe 31 shortly after leaving the longitudinal stop 14.

[0059] The probe shoe 31 has a side surface 38 facing the workpiece 1, which lies at an angle to the transport direction 13 and rests against the right longitudinal side 2 of the workpiece 1 after its entry into the device 10, so that the longitudinal side 2 can be machined by the tool 29 to the required extent and with the set chip removal rate.

[0060] Since the pressure shoe 36 is under force against the workpiece 1, it ensures that the two slides 19, 20 are adjusted transversely to the transport direction 13 in such a way that the feeler shoe 31 is always pressed against and in contact with the longitudinal side 2 of the workpiece 1 during the planing process. In this way, the tools 29, 34 of the two slides 19, 20 follow the curvature of the longitudinal side 2.

[0061] As from Fig. 7 As can be seen, the pressure shoe 36 is opposite the tactile shoe 31.

[0062] The curved longitudinal side 2 is machined (planed) with the tool 29 and the curved longitudinal side 3 of the workpiece 1 is machined (planed) with the opposite tool 34.

[0063] To ensure that the curved longitudinal sides 2 and 3 of the workpiece 1 are machined simultaneously with the two tools 29, 34, and that the curvature of the longitudinal sides 2, 3 is not eliminated by the machining process, the two slides 19, 20 are moved during transport through the device 10 as described, so that the tools 29, 34 follow the curvature of the longitudinal side 2 of the workpiece 1. The left slide 20 with the tool 34 is also continuously adjusted relative to the tool 29 during the passage of the workpiece 1 to maintain the required taper of the workpiece 1. The workpieces are fed to the infeed table 9, 42 in the correct orientation, with the concave side facing the stop 14 and the wane 46 facing downwards.The input parameters for controlling the planing machine 48 with the device 10 are the infeed width, the taper / taper class, the taper profile from wide to narrow or from narrow to wide, and the desired chip removal on the right longitudinal side 2 for each workpiece 1 fed into the machine. These values ​​are known before the workpieces 1 are fed onto the infeed table 9 of the planing machine 48, for example, by scanning them or detecting them using sensors, cameras, or similar devices. The taper class is already known from the sawing process. Using this data, the two tools 29 and 34 of the device 10 are brought into a home position before each individual workpiece 1 is fed into the device 10, and the position of the left tool 34 is controlled during the workpiece passage by means of the adjustment unit 23.

[0064] For the process flow, the detection of the beginning and end of the wood, viewed in the transport direction 13, is necessary. For this purpose, sensors, not shown, are provided within the tenoning machine. Detecting the beginning of the wood, in conjunction with the transport speed, determines the position of the workpiece 1 within the device 10. This controls the start of the relative adjustment (width adjustment) of the left tool 34 to create the desired taper. Detecting the end of the wood allows the system to recognize when the workpiece 1 has left the device 10, enabling the positioning of the slides 19, 20 to their home position for the next workpiece 1. Fig. 8 Figure 1 shows the workpiece 1, which has been partially moved between the two tools 29 and 34. It is evident that both tools 29 and 34 remove material from the curved longitudinal sides 2 and 3 of the workpiece 1. It is also evident that the curvature of these longitudinal sides 2 and 3 is maintained during the machining of the workpiece 1. After passing through the device 10, the workpiece 1 acquires a conical shape, with the longitudinal sides 2 and 3 being curved rather than straight.

[0065] During the passage of workpiece 1 through the device 10, the left tool 34 is continuously adjusted relative to the right tool 29 in the manner described, according to the desired taper of the workpiece. Based on the taper of workpiece 1, the distance between the two tools 29 and 34 is adjusted from the start of machining ( Fig. 7 ), always wider. It is also noticeable that the right slider 19, following the curvature of the wood, moves away from the stop 28 compared to the position after Fig. 6 moved away.

[0066] In the exemplary embodiment, the left tool 34 is adjusted by one centimeter for every one meter of length of the workpiece 1, so that the width of the workpiece 1 increases by 1 cm per 1 m of length from the narrow end 12. This achieves an optimal wood yield if the starting board had a corresponding taper.

[0067] This dimension is not to be understood as restrictive. The widening of workpiece 1 can also have other values.

[0068] During the passage of workpiece 1, the entire unit, consisting of the two slides 19 and 20, is adjusted together to forcefully follow the curvature of workpiece 1. The spring-loaded pressure shoe 36 constantly presses the sensing shoe 31 against workpiece 1. This ensures optimal wood yield, i.e., minimal workpiece material waste. The pressure shoe 36 continuously pulls the slide unit 19 and 20 towards workpiece 1.

[0069] The floating adjustment of the two slides 19, 20 follows the curvature of the longitudinal sides 2, 3 of the workpiece 1. The degree of taper of the workpiece 1 is determined by the continuous relative adjustment of the tool 34.

[0070] As demonstrated by Fig. 4 As previously explained, in a subsequent process the curvature of workpiece 1 is pressed out in the gluing press, so that the board carpet 7 can be produced with the correspondingly deformed workpieces 1. The machined workpiece 1 is guided onto the machine table 42 from the planing machine 48 by the device 10.

[0071] The drive motor 25 of the adjustment unit 23 is advantageously a servo motor, with which it is possible to adjust the left slide 20 precisely with the tool 34.

[0072] Fig. 9 Figure 1 shows an embodiment of a device 10 in which the slide 19 can be adjusted together with the slide 20 in the adjustment direction 24 by means of an adjustment unit 39. The drive unit 39 is designed here by way of example identically to the drive unit 23, with which the slide 20 can be adjusted relative to the slide 19 in the adjustment direction 24.

[0073] The drive unit 39 is arranged on the machine stand 22 and serves to move the two slides 19, 20 on the guide 21 into a home position. Its operation depends on how the workpiece 1 is inserted into the device 10 and is exemplified in Fig. 6 The two slides 19, 20 are coupled to each other via the drive unit 23 in the manner described above. The drive unit 39 replaces the stop 28 of the previous embodiment. The unit consisting of the two slides 19, 20 is held in the home position until the tool 34 is moved into a home position relative to the slide 19 by means of the drive unit 23 by moving the slide 20 in the adjustment direction 24. This home position is determined by the entry-side width of the workpiece 1 to be fed. Depending on the ratio of the exit-side width of the previously machined workpiece 1 and the entry-side width of the subsequently fed workpiece 1, the left tool 34 must cover a large adjustment distance within a short time. This short time is necessary to achieve the smallest possible gap between successive workpieces 1 and thus high productivity.The desired rapid adjustment of the left slide 20 creates large inertial forces, the reaction forces of which must be absorbed by holding the slide unit.

[0074] To enable the unit consisting of the two slides 19, 20 to follow the curvature of the longitudinal sides 2, 3 of the workpiece 1 as described during machining, this unit is decoupled from the drive unit 39 so that it can move freely on the machine stand 22 along the guide 21. This release can be achieved, for example, by decoupling the slide 19 from the drive unit 39.

[0075] Instead of the drive unit 39, the slide 19 can also be adjusted and held in position relative to the machine stand 22 by a pneumatic or hydraulic cylinder, for example. Clamping the slide 19, and thus the slide unit 19, 20, is also possible.

[0076] Advantageously, a linear motor can be used to adjust the slide unit 19, 20, which allows the unit to be positioned precisely and also enables decoupling so that the slide unit 19, 20 can move freely (floating) during the machining of the workpiece 1.

[0077] Furthermore, the device 10 is designed identically to the previous embodiment. The machining of the workpiece 1 is also carried out in the same manner as in the previous embodiment.

[0078] Fig 10 Figure 1 shows a further embodiment of the device 10, with which the workpieces 1 can be machined in the manner described. Both slides 19, 20 are independently adjustable by their own drive units 23, 39. Both drive units 23, 39 are arranged on the machine stand 22.

[0079] The drive unit 23 is independent of the drive unit 39.

[0080] The position of the right slide 19 is detected by a measuring system and, almost simultaneously, transmitted to the control system as a base value for adjusting the left slide 20 and thus the left tool 34. For adjusting the left slide 20 or the left tool 34, the taper of the workpiece 1 is added to the base value, i.e., superimposed as in the previous embodiments of the curvature.

[0081] The left drive unit 23 is independent of the right drive unit 39 and is formed by a CNC drive, for example by a servo or linear motor.

[0082] Furthermore, the device 10 is designed identically to the embodiment according to the Fig. 6 bis 8 The machining of the curved longitudinal sides 2, 3 of the workpiece 1 is carried out in the procedure described using this embodiment.

[0083] Further development of the device 10 according to Fig. 10 The solution consists of designing both drive units 23, 39 as independent CNC drives and connecting them to a control unit that allows the drive units 23, 39 to be adjusted independently of each other. The curved shape of the longitudinal sides 2, 3 and the taper of the workpiece 1 can be determined by a scanner or a camera. Based on this, the control unit can determine the adjustment of the two slides 19, 20, depending on the transport path of the workpiece 1 or its position, in order to achieve the desired machining. A prerequisite for maintaining the predetermined workpiece position is that the workpiece 1 is guided precisely. This can be achieved, for example, by guiding the workpiece 1 through the device 10 using a groove-and-rib guide (not described in detail).The machine table 42 is provided with at least one projecting web extending in the transport direction 13, which engages in a corresponding groove on the underside of the workpiece 1, also extending in the transport direction 13.

[0084] The drive units 23, 39 allow the tools 29, 34 to be adjusted precisely so that the workpiece 1 has the desired curvature of the longitudinal sides 2, 3 and the desired taper after passing through the device 10.

[0085] In the embodiment according to Fig. 11 The slides 19, 20 with the tools 29, 34 are arranged on a base slide 40, on which the guide 21 for the slide 20 is located. The base slide 40 is guided on the machine stand 22 in the adjustment direction 24 by at least one guide 41.

[0086] The drive unit 23 is arranged on the base slide 40, with which the left slide 20 can be adjusted relative to the right slide 19 on the base slide 40 in the adjustment direction 24.

[0087] The two slides 19, 20 with their tools 29, 34 are freely floating on the base slide 40 in the adjustment direction 24, so that the tools 29, 34 can follow the curvature of the longitudinal sides 2, 3 of the workpiece 1 during machining as described. The drive unit 23 allows the tool 34 to be adjusted according to the desired taper of the workpiece 1 during machining, as shown by the Fig. 7 and 8 has been explained.

[0088] The machining process for workpiece 1 is carried out as described. The two slides 19, 20 are otherwise designed in accordance with the previous embodiments.

[0089] The unprocessed workpieces 1 are advantageously sorted into taper classes, which are determined, for example, by the taper angle that the longitudinal sides 2, 3 of the workpiece 1 enclose with each other, or by a defined increase or decrease in width per linear meter of the workpiece 1. In the production of the board carpet 7 ( Fig. 5 ) Two machined workpieces of the respective taper class are always placed next to each other, rotated 180° relative to each other, thus forming part 8. On the gluing press, the adjacent machined lamellar workpieces 1, which form the board carpet 7, are then pressed together in such a way that the curvature of the longitudinal sides 2, 3 is pressed out.

[0090] In the illustrated embodiments, the workpiece 1 is fed into the device 10 such that the narrow end 12 of the workpiece 1 enters the device 10 first. However, the workpiece can also be arranged so that its wide end 11 enters the device 10 first. The left tool 34 is adjusted accordingly as the workpiece 1 passes through.

[0091] The illustrated embodiments show a planing machine in which the workpieces are transported from right to left. Alternatively, the planing machine can also be designed so that the transport occurs from left to right. In such a design, the terms "left" and "right" are reversed compared to the described embodiments.

[0092] The following are some advantageous dimensions, which should not be understood as limitations: Feed rate: 120 m / min Workpiece width: 80 - 300 mm Workpiece thickness: 20 - 50 mm Workpiece length: 2 - 5 m Taper classes: 0 - 20 mm / meter Wood curvature: 0 - 2 mm / meter.

Claims

1. Method for processing conical wooden workpieces (1) having longitudinal sides (2, 3) that are at an angle to each other and are curved along their length, characterized by the fact that with a first planing tool (29) one longitudinal side (2) is planed along the curvature of this longitudinal side (2) and with a second planing tool (34) the opposite longitudinal side (3) is planed along the curvature of the first longitudinal side (2) and superimposed with a desired taper by adjusting the second planing tool (34) relative to the first planing tool (29) transversely to the transport direction (13) of the workpiece (1) during the passage of the wooden workpiece (1).

2. Method according to claim 1, characterized by the fact that a probe shoe (31) is pressed against one long side (2) of the wooden workpiece (1) during processing.

3. Method according to claim 1 or 2, characterized by the fact thatthe wooden workpiece (1) is recorded before processing with regard to the curvature of its longitudinal sides (2, 3) and their conicity.

4. Method according to claim 3, characterized by the fact that the data characterizing the taper of the wooden workpiece (1) are used to control the planing tools (29, 34).

5. Device for carrying out the method according to one of claims 1 to 4, comprising at least two planing tools (29, 34) for machining the longitudinal sides (2, 3) of the wooden workpiece (1), wherein the planing tools (29, 34) are each mounted on a slide (19, 20) and both slides (19, 20) are adjustable transversely to the transport direction (13) of the wooden workpiece (1), characterized by the fact that the slides (19, 20) are coupled by at least one drive unit (23) and can be moved relative to each other in a controlled manner by means of the drive unit (23), 6. Device according to claim 5, characterized by the fact thatthe two sliders (19, 20) are movable on a common guide (21).

7. Device according to claim 5 or 6, characterized by the fact that on one slide (20) at least one pressure unit (36) is arranged which bears against the longitudinal side (3) of the wooden workpiece (1) under force and presses a stylus shoe (31) against the other longitudinal side (2) of the wooden workpiece (1) during processing.

8. Device according to claim 7, characterized by the fact that the probe shoe (31) is arranged in the transport direction (13) of the wooden workpiece (1) in front of the first planing tool (29) and with which the dimension (33) of the chip removal on the longitudinal side (2) of the wooden workpiece (1) can be adjusted.

9. Device according to one of claims 5 to 8, characterized by the fact that the drive unit (23, 39) is connected to a control unit to which data about the inlet-side width, taper and chip removal on the longitudinal side (2) are transferred.

10. Planing machine with a device according to one of claims 5 to 9.

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