EP4132754A1 - Système d'usinage de pièces en bois, en plastique, en aluminium ou similaires et procédé d'usinage de telles pièces - Google Patents

Système d'usinage de pièces en bois, en plastique, en aluminium ou similaires et procédé d'usinage de telles pièces

Info

Publication number
EP4132754A1
EP4132754A1 EP21719044.6A EP21719044A EP4132754A1 EP 4132754 A1 EP4132754 A1 EP 4132754A1 EP 21719044 A EP21719044 A EP 21719044A EP 4132754 A1 EP4132754 A1 EP 4132754A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
workpieces
clamping
clamping device
workpiece carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21719044.6A
Other languages
German (de)
English (en)
Inventor
Michael Hemmerich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michael Weinig AG
Original Assignee
Michael Weinig AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michael Weinig AG filed Critical Michael Weinig AG
Publication of EP4132754A1 publication Critical patent/EP4132754A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/02—Machines with table
    • B27C5/06—Arrangements for clamping or feeding work

Definitions

  • the invention relates to a system for processing workpieces made of wood, plastic, aluminum and the like according to the preamble of claim 1 and a method for processing such workpieces according to claim 12.
  • Such systems are, for example, window machines or molding machines, on which the elongated, square in cross-section work pieces are processed on their sides.
  • arcuate or flat workpieces often have to be processed, for example door leaves.
  • Such flat workpieces are clamped on workpiece carriers, which usually form a stationary system on a machining center. Therefore, if a surface-shaped workpiece is to be clamped on the workpiece carrier, the machining center must be shut down for safety reasons.
  • the invention is based on the object of designing the generic system and the method in such a way that flat or curved work- Pieces can be easily clamped and aligned without having to interrupt the operation of the system.
  • the system according to the invention makes it possible to arrange the surface or bogenförmi ge workpiece outside the system without any problems on the workpiece carrier. This makes it possible for the elongated workpieces to be processed in the system during the setup process. Outside the system, the workpiece carrier can be positioned so that it is accessible from all sides. Then even a heavy workpiece can easily be placed by two people, for example, so that aids, such as a workshop crane, are not absolutely necessary.
  • a carriage carrying the workpiece carrier can advantageously be docked to a guide system of the system so that the workpiece carrier can be transported into the system for processing the clamped flat or curved workpiece.
  • the workpiece carrier is advantageously net angeord on a guide of the carriage. It can be moved, for example, by means of wheels, so that it can easily be brought to a position in which the flat or curved workpiece can be conveniently positioned on the workpiece carrier.
  • the workpiece carrier can be easily moved on the guide.
  • the workpiece carrier with the stretched sheet-like or curved workpiece can be easily transported into the system, it is advantageously provided that the guidance of the carriage in the docked position forms a continuation of the system's guidance system.
  • the workpiece carrier can then be conveniently transported from the trolley into the system.
  • the workpiece carrier and thus the flat or curved workpiece can be easily positioned in the system, the workpiece carrier can advantageously be fixed in the system.
  • a form-fit connection between the workpiece carrier and the guide system can be provided, such as, for example, fixing bolts, fixing wedges, hooks that engage in corresponding recesses.
  • the second clamping device is advantageously a suction clamping device with which the flat or curved workpiece can be easily fixed on the workpiece carrier.
  • the suction cups are operated in vacuum mode and tighten the flat or curved workpiece firmly.
  • the suction clamping device advantageously has suction cups arranged on the workpiece carrier.
  • They can advantageously be positioned on the workpiece carrier so that they can be individually positioned on the workpiece carrier depending on the planar or arcuate workpiece to be clamped.
  • the positioning of the suction cups is advantageously easily possible if the top of the workpiece carrier is divided into a chessboard pattern and the coordinates of the positions of the suction cups are specified.
  • the suction cups can then be easily and precisely adjusted into the positions required for clamping the flat or curved workpiece.
  • the position of the suction cups on the workpiece carrier is displayed by a display device.
  • the use of a laser is advantageous here, with which the position of the respective suction cup can be displayed with precise positioning on the workpiece carrier.
  • the suction cups for moving the sheet-like or arcuate workpiece at the interface to the workpiece can be switched to compressed air operation. Then compressed air is that forms an air cushion on which the flat or curved workpiece can be easily moved. As soon as the workpiece is positioned, it is switched to vacuum mode so that the workpiece is pulled firmly against the suction cups and held.
  • the elongated workpieces are machined in the system, while at the same time the surface or arcuate workpiece is clamped on the workpiece carrier of the second clamping device outside of the system. This means that the operation of the system does not have to be interrupted during the set-up process. Only when the flat or curved workpiece is clamped on the workpiece carrier is it moved into the system, positioned and locked. The processing of the elongated workpieces is terminated beforehand, so that the flat or curved workpiece can be processed in the system immediately afterwards.
  • FIG. 1 shows a perspective view of a system according to the invention with a clamping device according to the invention
  • FIG. 2 shows a clamping device according to the invention in an enlarged and perspective view
  • FIG. 4 shows, in an enlarged illustration and partially in section, a tool changing device of the system according to the invention
  • FIG. 10 shows, in a representation corresponding to FIG. 1, a system according to the invention with a clamping device for flat workpieces,
  • Fig. 13 different steps when introducing the sheet-like work piece in the system.
  • elongated workpieces are processed, which can advantageously consist of wood, but also of plastic, aluminum or a similar material.
  • the workpieces 1 have a rectangular cross-section and are fed on a feed device 2 transversely to their longitudinal direction in the y-direction.
  • the feed device 2 is provided with at least one transport unit 3 with which the workpieces 1 are transported into the system transversely to their longitudinal direction.
  • the workpieces 1 to be processed can be placed on the feed device 2 by hand.
  • an automatic workpiece feed is also possible.
  • the transport unit 3 can be formed, for example, by transport belts which extend in the y-direction and on which the workpieces 1 rest when they are fed into the system.
  • the feed device 2 has at least one support table 4 on which the workpieces 1 are placed. As soon as the workpieces 1 leave the support table 4, they are picked up by the transport unit 3 and transported transversely to their longitudinal direction.
  • the feed device can have several transport units 3 lying next to one another in order, for example, to be able to transport several workpieces 1 lying next to one another at the same time.
  • the workpieces 1 are fed to two clamping devices 5a, 5b with which the workpieces 1 are clamped at the top and bottom who the.
  • the clamping devices 5a, 5b each have at least one, in the exemplary embodiment three clamping carriages 6a to 6c, 7a to 7c, each having upper clamping jaws 8a with which the workpieces 1 are clamped in a known manner against lower clamping jaws 8b.
  • the clamping carriages 6a to 6c, 7a to 7c can be individually positioned in the x direction according to the length of the workpieces 1.
  • the number of clamping devices 5a, 5b and clamping carriages 6a to 6c, 7a to 7c can vary.
  • a different number of clamping carriages 6a to 6c, 7a to 7c can form the clamping device 5a, 5b.
  • the individual clamping device 5a, 5b is defined within the scope of the exemplary embodiment. ned that a single workpiece 1 is clamped in a clamping device 5a, 5b.
  • the clamping carriages 6a to 6c, 7a to 7c can be of different widths (in the longitudinal direction of the workpieces), so that a workpiece can only be clamped in one clamping carriage 6a to 6c, 7a to 7c.
  • the tensioning device 5a, 5b in this case consists of one tensioning carriage 6a to 6c, 7a to 7c.
  • the tensioning carriages 6a to 6c, 7a to 7c can be moved in the x direction along a guide 9.
  • the elongated workpieces 1 extend in the x direction, the transport direction.
  • the clamping carriages 6a to 6c, 7a to 7c arrive in a transfer area 10 in which the workpieces 1 can be taken over by a second clamping device 11.
  • the clamping device 11 has a lower clamping jaw 12 for the workpieces 1 (Fig. 2), on which the workpieces 1 rest in the clamped state.
  • the clamping jaw 12 extends in the x direction over approximately the length of the clamping device 11.
  • an upper clamping jaw 13 is used, which extends in the x-direction over the length of the clamping device 11 and is connected to at least two drives 14, in the exemplary embodiment with three drives 14 spaced one behind the other in the x-direction which the upper jaw 13 can be adjusted in the z-direction.
  • the drives 14 each have a carrier 14a to which the clamping jaw 13 is attached and which can be adjusted in the z direction along a guide (not shown).
  • the drive 14 is preferably a piston-cylinder unit with which the clamping force is generated.
  • the piston-cylinder unit has the cylinder 15 which is attached to a carrier 16.
  • the carrier 14a which is firmly connected to the clamping jaw 13, is connected to a piston rod 17 which can be displaced in the z-direction in order to adjust the upper clamping jaw 13 in the z-direction.
  • the drives 14 are parts of adjustment units 18 which have the carrier 16 and which can be moved in the z-direction together with the drives 14.
  • the adjustment units 18 are provided in a further adjustment unit 19 which have z-guides 20 for the carrier 16 of the drives 14.
  • the adjustment units 19 can be moved on guides 21 extending in the y direction.
  • a drive 22 (FIG. 1) is provided in order to move the adjustment units 19 in the y-direction.
  • This axis of travel is designed as a positioning axis, so that the clamping jaws 12, 13 can be set exactly in the y-direction for the transfer of the workpieces 1 to be described in the clamping device 11.
  • the drive 22 has a drive motor 23 with a motor shaft 24 lying in the y-direction, which is drive-connected via endless drives 25 to adjusting spindles 26 extending in the y-direction. With them, the adjustment units 19 can be moved in the y direction.
  • the workpieces 1 to be processed are fed via the feed device 2 and the transport unit 3 (FIG. 1) in the y-direction to the clamping devices 5a, 5b, which are located in a loading area 27 of the system. In this area, the workpiece 1 can be pushed against a spring-loaded counter-stop 28 (FIG. 5) in the y-direction and clamped with the clamping jaws 8a, 8b of the clamping carriages 6a to 6c, 7a to 7c. In this case, it is not necessary to clamp the workpiece 1 in an exact and precise position.
  • the depth dimension in the y-direction depends on the width of the workpiece 1, which is pushed in by means of a slide that engages behind the workpiece 1 and executes a defined stroke or path. It is limited by the maximum end position of the counter-stop 28.
  • the workpiece 1 can also be twisted or odd or inclined on the clamping carriages 6a to 6c, 7a to 7c.
  • the transport unit 3 is higher than the lower clamping jaws 8b, for example, so that the workpieces 1, as shown in FIG take place in the y-direction without a previous z-stroke of the lower clamping jaws 8b.
  • the trans port unit After clamping the unprocessed workpieces 1, the trans port unit is clocked off by a small amount so that the underside of the work piece 1 comes free of it.
  • the clamping devices 5a, 5b can then be transported along the guide 9 extending in the x direction into the transfer area 10, which also forms the processing area of the system. During this transport, the workpiece 1 is moved in its longitudinal direction, that is to say in the x direction.
  • FIG. 5 shows an example of a workpiece 1 clamped at an angle and tilted between the clamping jaws 8a, 8b of the clamping device 5a. Only in the transfer area 10 is the workpiece 1 precisely aligned so that it can be clamped and processed in the transfer area 10 with high accuracy.
  • the upper clamping jaw 13 of the clamping device 11 located in the transfer area 10 is raised so far in the z-direction that the workpiece 1 can be retracted into the clamping device 11 in the x-direction and / or, if necessary, the clamping device 11 can be adjusted in the y-direction. If necessary, the lower clamping jaw 12 of the clamping device 11 is set slightly downwards during the retraction, so that there can be no contact with the workpiece 1 and consequent damage.
  • the workpieces 1 are clamped in the respective clamping device 5a, 5b in such a way that their one longitudinal side 29 in the y-direction over the clamping jaws 8a, 8b of the clamping carriages 6a to 6c, 7a to 7c in the direction of the clamping device 11 protrude. Since the workpiece 1 is clamped in the clamping device 5a, 5b at an angle, for example, runs the longitudinal side 29 of the workpiece 1 at a corresponding angle to the x direction. If the workpiece 1, as shown by way of example, is also clamped in a tilted manner, then the longitudinal side 29 of the workpiece 1 is also at a small acute angle to the y-direction.
  • Each clamping carriage 6a to 6c, 7a to 7c of the clamping devices 5a, 5b has at least one counter-stop 28, which can be clocked back and forth in two positions by means of a pneumatic cylinder and which acts as a spring-loaded counter-stop 28 in front of its position due to the application of pressure.
  • the counter-stop 28 is in the retracted position in which it is at a distance from the workpiece 1.
  • each tensioning carriage 6a to 6c, 7a to 7c has a spring-loaded counter-stop 28 that can be moved forward and backward.
  • the distance measured in the y-direction between the opposing clamping devices 5a, 5b and 11 is set such that the workpiece 1 reaches the lower clamping jaw 12 of the clamping device 11 over part of its width.
  • the clamping device 5a, 5b is provided with the at least one spring-loaded counter stop 28 which can be moved in the y-direction.
  • Counter stop 28 has a stop surface 30 perpendicular to the support surface of the lower clamping jaw 8b, with which it comes to rest on the longitudinal side 31 of the workpiece 1 opposite the longitudinal side 29 when it moves the workpiece 1 in the y-direction (FIG. 7).
  • the workpiece 1 With the counter-stop 28, the workpiece 1 is pushed in the y-direction onto the lower clamping jaw 12 until the workpiece 1 rests with its longitudinal side 29 on a stop 32 of the clamping device 11 extending in the x-direction (FIG. 7), whose contact side is also perpendicular to the contact surface of the lower jaw 12.
  • the stop 32 of the clamping device 11 can be positioned in the y direction. In this way, the position of the workpiece 1 can be set exactly for the subsequent machining.
  • the setting of the workpiece 1 takes place in an advantageous manner in such a way that it already assumes the position required for the subsequent machining of the longitudinal side 31 in the y-direction during this first clamping. Then the workpiece 1 does not have to be moved after the machining of one longitudinal side 29 and the transfer to the clamping device 11.
  • the workpiece 1 is brought into the exact position.
  • the upper clamping jaws 8a of the clamping carriages 6a to 6c, 7a to 7c are lowered in the z-direction until the workpiece 1 is between the upper clamping jaws 8a and the lower ones Clamping jaws 8b is clamped.
  • the clamping of the workpiece 1 is such that it protrudes in the y-direction in the direction of the clamping device 11 over the two clamping jaws 8a, 8b.
  • the workpiece 1 projects approximately over half its width over the clamping jaws 8a, 8b (FIGS. 8 and 9).
  • the clamped workpiece 1 rests with its longitudinal side 31 on the stop surface 30 of the counter-stop 28 of the clamping device 5a, 5b (FIGS. 8 and 9).
  • the stop 32 can be positioned in its y-position via a separate y-axis or by means of the y-axis of the clamping device 11.
  • the stop 32 is arranged on the supports 16 of the adjustment units 18 and can be adjusted in three positions in the y-direction.
  • the stop 32 is clocked forward in the y direction.
  • the two precompacted positions of the stop 32 are used to align and push off the workpieces 1.
  • the stop 32 is then returned to the third position when the workpiece 1 is to be transferred for the second clamping for machining the longitudinal side 31 of the clamping device 11.
  • the stop 32 is then not on the workpiece 1.
  • Fig. 6 the middle posi tion of the stop 32 is shown.
  • the clamping device 11 with the described adjustment units 19 (FIG Long side 29 processed with the appropriate tools, usually profiled or planed smooth.
  • holes, grooves and the like can be made in the upper side 33 and / or the lower side 34 of the workpiece 1.
  • the clamping device 11 is moved by means of the adjustment units 19 in the y-direction back into a position relative to the clamping device 5a, 5b in which the workpiece 1 is overlapped by the clamping jaws 12, 13 of the clamping device 11.
  • This position of the two tensioning devices 5a, 5b and 11 relative to one another roughly corresponds to the position shown in FIG. 8.
  • the upper clamping jaw 13 of the clamping device 11 is lowered so far in the z-direction that the workpiece is in the over the clamping jaws 8a , 8b protruding area or on a previously processed area, for example in a fold, is clamped in the clamping device 11.
  • the clamping device 11 is moved in the direction of the clamping device 5a, 5b until the clamping device 11 has reached the position that is optimal for optimal clamping and machining of the workpiece 1 on the longitudinal side 31.
  • the workpiece 1 is not free at any time.
  • the position of the workpiece 1 does not change, but remains stationary in the system. This ensures very precise machining of the workpiece 1, since in particular no axis positioning of the clamping device 11 has to take place.
  • the upper clamping jaws 8a of the clamping carriages 6a to 6c, 7a to 7c are lifted in the z-direction, so that the workpiece 1 is no longer clamped by the clamping device 5a, 5b.
  • the clamping device 5a, 5b is then moved back in the x direction to the transfer or loading area 27 in order to pick up the next workpiece 1 to be machined there.
  • the workpiece 1 is clamped in the clamping device 11 in such a way that it protrudes sufficiently far beyond the clamping jaws 12, 13 of the clamping device 11 in the y-direction.
  • the not yet machined long side 31 of the work piece 1 can then easily be edited with the appropriate tool.
  • bores, grooves and the like can also be made with a corresponding tool.
  • the two clamping jaws 12, 13 of the clamping device 11 extend over the entire length of the workpiece lengths customary in the area of application of the system.
  • the upper clamping jaw 13 is driven in the z-direction by means of several drives 14 in the manner described.
  • several drives 14 In the Ausry approximately example are used for z adjustment of the upper jaw 13 to three drives 14, which are arranged one behind the other at a distance in the x direction.
  • the clamping force required to clamp the workpieces 1 is applied with the drives 14.
  • the drives 14 can be electric, pneumatic, hydraulic or similar drives. They are advantageously the same distance from one another.
  • At least one of the drives 14 is force-regulated.
  • the lower clamping jaw 12 which normally forms the reference edge or reference surface for machining the workpiece 1, is made sufficiently rigid. This ensures high milling accuracy when machining the workpiece.
  • the workpiece 1 or the workpieces 1 is or will be clamped symmetrically to the center of the clamping device 11.
  • a certain force is exerted on the workpiece 1 with the middle of the three drives 14 via the clamping jaw 13.
  • the two outer drives 14 are also set to a certain clamping force together. In this way, the surface pressure can be kept constant over the length of the workpiece 1.
  • the clamping device 11 has several pressure circuits.
  • a pressure control valve 35 to 37 (FIG. 2) is assigned to each drive 14.
  • the respective clamping pressure can be set on the drives 14 so that different clamping forces can be generated with the drives 14.
  • the clamping force can thus be adjusted over the length of the workpiece. that an optimal clamping is guaranteed.
  • the effect of the weight of the upper jaw 13 can also be taken into account here.
  • the clamping device 11 has only two drives 14 for the upper jaw 13.
  • the upper jaw 13 ge can optionally be formed slightly curved in the longitudinal direction to compensate for their deflection during clamping.
  • the clamping device 11 has the lateral stop 32 with which the clamping depth of the workpiece 1 can be determined. Since the lower jaw 12, like the upper jaw 13, extends over the length of the workpiece, the stop 32 can also go through the entire length of the clamping jaws 12, 13. In this way, with simple structural means, a high level of precision in the positioning of the workpiece 1 in the clamping device 11 or in the clamping device 5a, 5b can be achieved. To adjust the stop 32 in the y direction, only one drive is required, since the stop points do not have to be flexible in length to each other.
  • the receiving unit 38 After finishing the workpieces 1, the receiving unit 38 is lowered until it is in the area below the clamped workpieces. Then, after releasing the clamping with the stop 32 of the clamping device 11, the workpiece 1 is pushed onto the receiving unit 38 in the y-direction by a drive (not provided).
  • the receiving unit 38 is adjusted so far upwards that it does not interfere with the workpiece processing. After the finished work pieces 1 have been transferred to the receiving unit 38, the latter is adjusted upwards again in the z direction.
  • the receiving unit 38 is provided on a carrier designed as a portal 41, which can be moved in the x direction.
  • the portal 41 has two uprights 42, 43 (FIG. 1) which can be moved on guides 44, 45 which extend in the x direction.
  • the two uprights 42, 43 are connected to one another at the upper end by a cross member 46.
  • a drive 47 is provided, which is arranged, for example, on the stand 43.
  • a slide 48 (FIG. 1), which can be moved in the z-direction, for adjusting the height of the receiving unit 38 is arranged on the cross member 46.
  • two arms 49 are provided, one end of which is hinged to the receiving unit 38 and the other end to the slide 48.
  • the receiving unit 38 With the portal 41, the receiving unit 38, as soon as the finished machined workpieces 1 are placed on it and it has been adjusted to its upper position, along the guides 44, 45 in the x direction so far that the workpieces 1 from the receiving unit 38 can be transferred to a discharge unit 50. It is in the area above the access guide device 2 provided.
  • the receiving unit 38 is lowered in the z-direction. It has recesses 51 into which, in the exemplary embodiment, belt tracks 52 of the discharge unit 50 protrude when the receiving unit 38 is lowered.
  • the workpieces 1 deposited on the receiving unit 38 can thereby be grasped by the belt tracks 52 and removed from the receiving unit 38.
  • the finished workpieces 1 are removed from the discharge unit 50 for further processing.
  • the two guides 44, 45 for the portal 41 are provided in such a way that the guide 9 for the clamping devices 5a, 5b lies in the area between the guides 44, 45.
  • the portal 41 can be moved in the x-direction and at the same time also the clamping devices 5a, 5b with the clamping carriages 6a to 6c, 7a to 7c in the x-direction, so that a time-parallel mode of operation is guaranteed.
  • the guide 9 is provided close to the guide 44 of the portal 41.
  • the stand 42 of the portal 41 which can be moved along the guide 44, is designed in such a way that it does not come into collision with the clamping devices 5a, 5b which can be moved along the guide 9.
  • the tools provided for machining the workpieces 1 are provided on the portal 41, which is moved along the guides 44, 45 for machining the workpieces 1.
  • a slide 53 is arranged on the cross member 46 such that it can be moved in the y direction.
  • the slide 53 is advantageously arranged on the side of the cross member 46 facing away from the receiving unit 38. It has guides 54 extending in the y direction, along which the carriage 53 can be moved (FIG. 3). It carries a tool spindle 55, the axis of which runs in the z-direction and which in the exemplary embodiment is a motor spindle.
  • a tool 56 (FIG. 4) which is required for machining the workpieces 1 and which is made available in a magazine 57 is inserted into the lower end of the tool spindle 55.
  • a linear magazine (Fig. 1), which has storage spaces 58 for the tools 56 arranged one behind the other in a row.
  • the tool spindle 55 is held on a spindle carrier 59 (FIG. 3) which can be moved in the z-direction with respect to the slide 53.
  • the spindle carrier 59 can be adjusted in the z-direction by means of a drive 60 mounted on the slide 53.
  • the corresponding tool 56 can be moved to the desired extent in the x, y and z directions by means of the portal 41, the slide 53 and the spindle carrier 59. In this way, the corresponding sides of the workpiece 1 can be processed within the transfer area 10 in the manner described.
  • the system is provided with a tool changing device 61 which is provided on the portal 41 and can be moved with it in the x direction.
  • the tools 56 required for machining the workpieces 1 can be removed from the magazine 57 and inserted into the tool spindle 55. Conversely, the respective tool 56 can be inserted into the magazine 57 with the tool changing device 61.
  • the tool changing device 61 has a plate magazine 62 with an axis 63 lying in the z direction, with which the plate magazine 62 can be rotated.
  • the magazine 56 has the storage spaces 58 (FIG. 3), which are equipped with receptacles 67 corresponding to the receptacles 66 of the plate magazine 62.
  • the plate magazine 62 is part of a slide 68 (FIG. 3) which can be moved in the y direction along a transverse support 69 extending in the y direction. It is connected to the portal 41, in particular to its stand 42. As FIG. 3 shows, the cross member 69 is provided on one side with two guides 70 which extend in the y direction and which are spaced one above the other in the z direction. With the slide 68, the plate magazine 62 can be moved along the guides 70 into the respective transfer positions.
  • a cylinder unit 71 which is arranged above the cross member 69, is used for this purpose.
  • the tool changing device 61 is provided with a transfer unit 72 (FIG. 4) with which the tools 56 can be transferred from the magazine 57 to the plate magazine 62.
  • the transfer unit 72 consists of a slide 73, a transfer part 74 and a drive 75.
  • the transfer unit 72 is provided on a holder 76, which is advantageously designed in the form of a plate and extends in the y direction.
  • the holder 76 has a support element 77 which is fastened to the carriage 68.
  • the transfer unit 72 can be attached to the free end of the cross member 69.
  • the slide 73 can be moved in the y direction along the holder 76.
  • a guide rail 78 for the slide 73 is located on the holder 76.
  • the slide 73 is adjusted via a piston-cylinder unit 79, the housing 80 of which is connected to the slide 73 and the piston rod 81 of which is connected to the holder 76.
  • the transfer part 74 which is adjustable in the z-direction, is accommodated. It is advantageously designed in the shape of a bolt and can consist of a resting Position to be moved into a transfer position.
  • the drive 75 is provided, for example a pneumatic cylinder with which the transfer part 74 can be moved axially.
  • Fig. 4 shows the transfer part 74 in its transfer position, in which it engages in egg ne inner contour 82 of an interface 83 on the tool side. It is advantageously an HSK interface. It has a fitting diameter at the end of the cone and at a recess in the cone bottom, into which the bolt-shaped transfer part 74 can be inserted, whereby a tilt-free horizontal force can be exerted on the tool 56. This makes it possible to transfer the tool 56 from the receptacle 67 of the magazine 57 into the receptacle 66 of the plate magazine 62 without tilting.
  • the tool 56 has a gripper groove 84 which extends over the circumference of the interface 83 and into which legs 85, 86 engage, which delimit the receptacles 66 in the plate magazine 62 and the receptacles 67 in the magazine 57.
  • the legs 85, 86 are formed in such a way that they engage in the gripper groove 84 in a form-fitting and advantageously non-positive manner.
  • the tool 56 is thereby supported in the axial direction both in the magazine 57 or the plate magazine 62 and during the transfer, so that there is no risk of it falling down.
  • the transfer part 74 is designed in such a way that when the transfer part 74 is retracted, the inner contour 82 of the interface 83 is blown out.
  • the corresponding bore can be provided in the transfer part 74.
  • the slide 73 is moved in the y-direction on the cross member 69 in the direction of the magazine 57.
  • the plate magazine 62 is aligned in the x-direction by moving the portal 41 in relation to the tool 56 to be taken over and the star carrier 64 rotates about the vertical axis 63 of the plate magazine 62 so that the receptacles 66, 67 of the plate magazine 62 and the magazine 57 face each other.
  • the transfer part 74 is withdrawn so far that it does not come into contact with the tool 56 when the slide 73 is moved.
  • the transfer part 74 of the transfer unit 72 is shifted so far down in the z-direction that it engages the inner contour 82 of the interface 83 of the tool 56 (FIG. 4).
  • the slide 73 with the transfer part 74 engaging in the tool 56 is moved in the y-direction in the direction of the portal 41, the tool 56 is pressed into the receptacle 66 of the plate magazine 62.
  • the carriage 68 can now be moved together with the plate magazine 62 and the transfer unit 72 along the guides 70 in the y-direction in the direction of the portal 41.
  • the transfer part 74 is withdrawn into the transfer position before, during or after travel, so that it is released from the tool 56.
  • the plate magazine 41 is then rotated by 180 ° in such a way that the tool 56 is positioned in the area below the tool spindle 55 provided on the portal 41. It is then moved down in the z-direction so far that the tool 56 is received in the tool spindle 55 and clamped by means of a FISK clamping system known per se.
  • arcuate or sheet-like workpieces 87 can also be machined, as is shown by way of example in FIGS. 1 and 10 to 13 for a sheet-like workpiece. It is positioned on a workpiece carrier 88, for example as specified by the system control. The sheet-like workpiece 87 can be held on the workpiece carrier 88 by means of clamps and suction cups 89 (FIG. 10).
  • the workpiece carrier 88 is located on a carriage 90 which can be moved to the system by means of wheels 91. On the carriage 90 there is a guide 92, preferably a guide 92 on each side, along which the workpiece carrier 88 can be displaced.
  • the carriage 90 Since the carriage 90 is mobile, the workpiece 87 can be clamped on the workpiece carrier 88 at a set-up station, for example. Subsequently, the carriage 90 with the clamped workpiece 87 is moved up to the system (FIG. 12) in such a way that the guide 92 can be docked to a guide system 93 of the system after a protective machine cover has been opened.
  • the guide system 93 extends in the transfer area 10 of the system in the y-direction and advantageously also consists of a guide 93 on both sides the workpiece 87 can be pushed into the system.
  • the clamping device 11 Before the workpiece carrier 88 with the clamped workpiece 87 is moved into the system, the clamping device 11 is lowered so far in the z-direction that a free passage of the workpiece carrier 88 over the lowered clamping device is possible (FIG. 12). Alternatively or additionally, the guide track 93 can be raised in the system.
  • the driving portal 41 and the clamping units 5a, 5b are located outside the transfer area 10, so that the workpiece carrier 88 with the clamped workpiece 87 can be brought into the system without collision.
  • the workpiece carrier 88 is pushed into the system by hand. However, this can also be done via a drive.
  • the workpiece carrier 88 can advantageously also be lowered onto the carriage 90 in order to allow the operator an ergonomically good working position when placing and aligning the workpieces 87. After the carriage 90 has moved away and the protective machine cover has been closed, the workpiece carrier 88 is lowered so far that the workpiece
  • the workpiece 87 reaches the necessary machining position.
  • the workpiece 87 can be positioned at a similar height to the elongated workpieces 1 for machining within the transfer area 10. With the tool inserted into the tool spindle 55, the workpiece 87 can be machined in a known manner.
  • the portal 41 can move over the guide system and the workpiece carrier 88 with the clamped workpiece 87 without collision.
  • the machining of the flat or curved workpieces 87 takes place in the same way as the machining of the elongated workpieces 1 in the transfer area 10 or the machining area of the system.
  • the workpiece carrier 88 is locked in its position, for example, by index bolts 95, which are arranged on the longitudinal sides of the workpiece carrier 88 and protrude downward from it in the z-direction.
  • the guide system 93 is indexed in the z direction together with the workpiece carrier 88.
  • the index bolts 95 are inserted into fixed recesses 96 (FIG. 13).
  • index bolts can enable the workpiece carrier 88 to be fixed in the y-direction. These index bolts can be provided on the clamping device 11 and / or in the region of the guide track 9 opposite it and in bores in the workpiece carrier
  • the guide system 93 is so long that the workpiece carrier 88 is completely on the guide system 93 in the positioned position (FIG. 13).
  • the carriage 90 can therefore after the transfer of the workpiece carrier 88 be moved away to the guide system 93 in order to arrange the next workpiece carrier 88 on it and to clamp the next workpiece 87 on it.
  • the clamps or suction cups 89 are arranged distributed over the width and length of the workpiece carrier 88.
  • the suction cups 89 can be arranged in rows at a distance from one another, as FIG. 10 shows by way of example.
  • a further advantageous embodiment consists in training the suction cups 89 in such a way that they are arranged displaceably on the workpiece carrier 88.
  • the position of the suction cups 89 can then be optimally adapted to the shape of the flat workpieces 87.
  • the workpiece 87 can also be easily positioned on the workpiece carrier 88 in this way.
  • suction cups 89 are advantageously variably displaceable and can be arranged individually on the workpiece carrier 88, the worker can position the suction cups 89 exactly as specified by the machine control system, for example.
  • This positioning can be carried out particularly advantageously when the workpiece carrier 88 is divided up in a checkerboard manner and the coordinates of the positions of the suction cups 89 are specified. It is also possible, for example, for the positions of the suction cups 89 on the workpiece carrier 88 to be marked by a laser. In this case, the carriage 90 is at a defined position. While the carriage 90 is being set up, the angular workpieces 1 can continue to be processed in the system in the stack processing or another workpiece on a second workpiece carrier.
  • the suction cups 89 can advantageously be designed so that they are operated with compressed air instead of a vacuum during the movement at the interface to the workpiece 87, by being switchable to compressed air operation. Then compressed air is generated, which forms an air cushion on which the workpiece 87 can be easily pushed ver. On the side facing the workpiece carrier 88, they are held in a manner to be described below.
  • the carriage 90 can be placed at any desired place outside the system, there is the possibility of arranging the carriage 90 in such a way that the workpiece carrier 88 is accessible from all sides. As a result, a heavy workpiece can easily be placed by two people, for example. A tool, such as a workshop crane, is then not absolutely necessary.
  • the workpiece carrier 88 or the carriage 90 is advantageously provided with stops 94, 94a in two horizontal directions (x and y directions) against which the unprocessed workpiece 87 can be placed (FIGS. 1 and 10).
  • the suction cups 89 do not move unintentionally on the workpiece carrier 88, the workpiece carrier 88, but at least its support side, can be formed by a steel plate.
  • the suction cups 89 are equipped with magnets, by means of which the suction cups can be held firmly on the workpiece carrier 88.
  • the arcuate workpieces are machined in the same way.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Laser Beam Processing (AREA)
  • Specific Conveyance Elements (AREA)
  • Feeding Of Workpieces (AREA)

Abstract

L'invention concerne un système d'usinage de pièces en bois, en plastique, en aluminium et similaires, comprenant au moins un premier dispositif de serrage pourvu de mâchoires de serrage servant à serrer des pièces allongées. Le système comprend au moins un second dispositif de serrage (89) pour des pièces plates ou arquées (87), ledit dispositif de serrage étant disposé sur au moins un porte-pièce (88). Le porte-pièce peut être chargé avec la pièce plate ou arquée (87) à l'extérieur du système. Les pièces allongées peuvent être usinées tout en serrant simultanément la pièce plate ou arquée (87) sur le porte-pièce (88) du second dispositif de serrage (89) à l'extérieur du système. Une fois la pièce allongée complètement usinée, le porte-pièce (88) est déplacé dans le système, positionné et verrouillé, puis la pièce plate ou arquée (87) est usinée.
EP21719044.6A 2020-04-09 2021-04-06 Système d'usinage de pièces en bois, en plastique, en aluminium ou similaires et procédé d'usinage de telles pièces Pending EP4132754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020002321.5A DE102020002321A1 (de) 2020-04-09 2020-04-09 Anlage zur Bearbeitung von Werkstücken aus Holz, Kunststoff, Aluminium und dergleichen sowie Verfahren zum Bearbeiten solcher Werkstücke
PCT/EP2021/000038 WO2021204414A1 (fr) 2020-04-09 2021-04-06 Système d'usinage de pièces en bois, en plastique, en aluminium ou similaires et procédé d'usinage de telles pièces

Publications (1)

Publication Number Publication Date
EP4132754A1 true EP4132754A1 (fr) 2023-02-15

Family

ID=75539278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21719044.6A Pending EP4132754A1 (fr) 2020-04-09 2021-04-06 Système d'usinage de pièces en bois, en plastique, en aluminium ou similaires et procédé d'usinage de telles pièces

Country Status (3)

Country Link
EP (1) EP4132754A1 (fr)
DE (1) DE102020002321A1 (fr)
WO (1) WO2021204414A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9312534U1 (de) * 1993-08-21 1993-12-02 Zerfaß, Heinz, 55606 Kirn Transportwagen
DE20115186U1 (de) * 2001-02-19 2002-02-14 Zerfass Heinz Rollenbahnen-Arbeitstisch-Vorrichtung
DE202004020954U1 (de) 2004-08-06 2006-06-08 Weeke Bohrsysteme Gmbh Bearbeitungszentrum zum Bearbeiten von Werkstücken geringer Bauhöhe
DE202009002435U1 (de) 2009-02-20 2010-07-08 Hundegger, Hans Vorrichtung zur Bearbeitung von plattenförmigen Werkstücken
DE102015218814A1 (de) 2015-09-29 2017-03-30 Homag Gmbh Bearbeitungsvorrichtung

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DE102020002321A1 (de) 2021-10-14
WO2021204414A1 (fr) 2021-10-14

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