WO2022218667A2 - Procédé, installation d'usinage et programme informatique pour usiner une pluralité de pièces - Google Patents

Procédé, installation d'usinage et programme informatique pour usiner une pluralité de pièces Download PDF

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Publication number
WO2022218667A2
WO2022218667A2 PCT/EP2022/057725 EP2022057725W WO2022218667A2 WO 2022218667 A2 WO2022218667 A2 WO 2022218667A2 EP 2022057725 W EP2022057725 W EP 2022057725W WO 2022218667 A2 WO2022218667 A2 WO 2022218667A2
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WO
WIPO (PCT)
Prior art keywords
machining
workpieces
workpiece
axis
processing
Prior art date
Application number
PCT/EP2022/057725
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German (de)
English (en)
Other versions
WO2022218667A3 (fr
Inventor
Tobias Hagenlocher
Thomas KIEWELER
Original Assignee
Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Trumpf Laser- Und Systemtechnik Gmbh
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 Trumpf Werkzeugmaschinen Gmbh + Co. Kg, Trumpf Laser- Und Systemtechnik Gmbh filed Critical Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Publication of WO2022218667A2 publication Critical patent/WO2022218667A2/fr
Publication of WO2022218667A3 publication Critical patent/WO2022218667A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • B23K37/0235—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member forming part of a portal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0408—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work for planar work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0461—Welding tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps

Definitions

  • the invention relates to a method for machining a large number of workpieces, with a machining head of a machining system and the respective workpiece being moved relative to one another by at least one machine axis of the machining system in order to machine each of the workpieces, so that the workpieces are each machined along the same trajectory.
  • Such processing methods are widely used for series production of similar workpieces.
  • a movement unit with the machine axis is stressed, in particular by acceleration processes. As a result, the movement unit wears out over time.
  • DE 10 2008 033 709 A1 discloses a method for relocating the machining point of a workpiece at which the workpiece is machined using a tool of a machine tool.
  • the workpiece is machined dynamically via at least one tool axis.
  • An additional movement by a preferably redundant workpiece axis is superimposed on the movement along the at least one tool axis in order to increase the working space or to guide the machining point to a dynamically favorable point in the working space.
  • DE 10 2013 217 126 A1 describes a method for determining whether an actual position of a laser processing head of a laser processing machine, which is movably mounted along several movement axes, corresponds to a target position of the laser processing head or differs from it.
  • At least two different processing positions of the laser processing head are selected, in which a laser beam emitted by the laser processing head is directed at the same target position of a workpiece fixed on the laser processing machine.
  • the laser processing head is moved to the first processing position and a passage opening is made in the workpiece at the desired position by means of the laser beam.
  • the laser processing head is then brought into the second processing position and radiation generated by an interaction between the laser beam and the workpiece is detected. From this it can be concluded whether the actual position corresponds to the target position.
  • a method for processing a large number of workpieces is provided.
  • the process enables the series production of similar workpieces.
  • a machining head of a machining system and the respective workpiece are moved relative to one another by at least one machine axis of the machining system.
  • the relative movement of the workpiece and the machining head takes place in such a way that the workpieces are each machined along the same trajectory.
  • the processing head is preferably a laser processing head, in particular a laser cutting head or a laser welding head.
  • the processing system can be a laser processing system, in particular a laser cutting system or a laser welding system.
  • the movement takes place in different partial areas of a maximum range of motion of the at least one machine axis, with the different partial areas deviating from one another within predefined limits.
  • the several workpieces are all subjected to processing along the same trajectory.
  • the workpieces can (after processing) be identical.
  • the same processing for example laser cutting processing with the same cutting geometry, can be carried out on different workpieces, for example metal sheets of different sizes or thicknesses, so that for example the same cutting pattern is introduced in each case.
  • the movement along the at least one machine axis takes place in a partial area of the maximum range of movement of the at least one machine axis.
  • the maximum range of motion is not utilized for a single workpiece. Limits are specified within which the sub-areas for processing different workpieces must lie.
  • the partial areas of the maximum range of motion used for machining deviate from one another. A large number of workpieces are preferably manufactured with movements in different sub-areas in each case. Even if the partial areas deviate from each other around the predefined limits for the machining of several workpieces, ie the predefined limits of the deviation are exhausted, the maximum Range of motion for machining the multiple workpieces typically not utilized.
  • the sub-areas used for processing further workpieces can differ from the sub-areas used for processing previous workpieces.
  • a history of the processing system can be used to define the respective sub-areas to be used.
  • the machining head and the respective workpiece are preferably moved relative to one another for machining by a plurality of machine axes.
  • the movement takes place in different partial areas of a maximum movement range of the respective machine axes.
  • the respective partial areas deviate from one another within the predefined limits. The same or different limits can be specified for the multiple machine axes.
  • the at least one machine axis can be a tool axis (for moving a tool arranged on the machining head relative to a machine bed) or a workpiece axis (for moving a workpiece relative to the machine bed).
  • the machine axis can be a translatory axis or a rotary axis.
  • a movement along the machine axis is understood to mean a displacement or a rotation.
  • the predetermined number can be 1, 10, 100, 1000 or 10,000, for example. This simplifies the implementation of the method, in particular if manual intervention is required to shift the partial areas of the range of motion.
  • another partial area of the maximum range of motion can be used to process at least one additional workpiece.
  • the position of the different partial areas can be chosen at random within the predefined limits. As a result, in the long term it can be achieved that the stress on the at least one machine axis is evenly distributed.
  • successively used partial areas of the range of motion deviate from one another by predefined increments. This simplifies the implementation of the method. If the increments are sufficiently small, a uniform distribution of the stress is softened in the long run.
  • the workpieces can be positioned at different positions in a working area of the processing system.
  • position is understood here to mean both a translational and a rotational position of the workpieces. Due to the different arrangement of the workpieces in the work area the partial area of the maximum range of motion required for processing along the same trajectory is shifted accordingly.
  • the workpieces can be arranged at different positions of a receiving grid.
  • the recording grid can be specified, for example, by a machine table of the processing system. An extremely low outlay in terms of mechanical engineering is sufficient to carry out this variant of the method.
  • the workpieces can be brought to the different positions in the working space by means of at least one workpiece axis. This allows the method to be carried out automatically.
  • the workpieces can preferably be positioned steplessly in the working space by means of the workpiece axis.
  • the workpiece axis can be formed on a workpiece support.
  • Workpiece support can in particular be a workpiece changer.
  • the workpiece changer can therefore not only be used to change the workpieces to be machined, but also to carry out the method according to the invention. An additional outlay in terms of equipment can thereby be avoided.
  • similar blanks of the workpieces are machined in different areas of the respective blanks in order to obtain finished parts of the same type.
  • the terms raw parts and finished parts relate to the processing carried out within the scope of the method according to the invention along the same trajectory in each case.
  • a machining zero point can be placed at different points on the blanks within the predefined limits.
  • the blanks can be sheet metal, for example.
  • the finished parts can be cut out of the metal sheets. Due to the machining in different areas of the metal sheets, in particular a shift in the zero point of the machining on the metal sheets, different areas remain after the machining has been carried out Edges, whereas the cut-out finished parts are each identical.
  • the processing system can have at least one redundant axis.
  • the redundant axis is not required for the processing to be carried out.
  • the redundant axis allows one with several configurations
  • Movement unit of the processing system to achieve the same processing position on the workpiece.
  • the movement of the at least one machine axis for machining the different workpieces can be shifted to the different partial areas by different positions of the redundant axis.
  • the redundant axis allows the process to be carried out automatically.
  • the different partial areas can be shifted in relation to one another in particularly small increments by the redundant axis.
  • the redundant axis typically, there is no movement of the redundant axis during the machining of a respective workpiece, i. H. the redundant axis remains in the respective position.
  • the redundant axis contributes to the movement for machining the workpieces.
  • the workpieces are also moved along the redundant axis in different sub-areas of their maximum range of movement.
  • the processing head is designed as a laser processing head, the redundant axis can be aligned in the beam direction of the laser processing head. This can be advantageous from the point of view of control technology and with regard to the accuracy of the processing.
  • the redundant axis can be a translational or a rotary axis. Several redundant axes can be present and used in the manner described to move the sub-areas.
  • the redundant axis can be an axis for moving a beam exit device on the processing head.
  • the beam exit device can have a nozzle and/or optics for a laser beam, for example.
  • Such an axis can be used in laser processing systems in order to avoid collisions between the beam exit device and the workpiece or to simplify the regulation of a distance between the beam exit device and the workpiece.
  • Such redundant axes can thus make it possible to carry out the method according to the invention without any additional outlay in terms of mechanical engineering.
  • the redundant axis can be formed on a workpiece support.
  • the workpiece support can move a workpiece held on it in the working area of the processing system.
  • the workpiece support can be a workpiece changer.
  • the workpiece changer can thus be used in the course of loading the processing system and its
  • the redundant axis can in particular be an axis of rotation of the workpiece changer and preferably run parallel to the beam direction of a laser processing head.
  • some of the different partial ranges of the maximum range of motion are set up by utilizing a first possibility of positioning the workpiece and machining head relative to one another, and other of the different partial ranges of the maximum range of motion are set up by utilizing a second possibility of positioning the workpiece and processing head relative to one another.
  • different sub-areas can be set up relative to one another by a combined use of several options for positioning the workpiece and machining head. In this way, the stresses on the processing system can be distributed particularly widely.
  • the different options for positioning can relate to different options for movement of the machining system and/or different options for positioning the workpieces in the work area.
  • a multi-axis processing system for each of the processing the machine axes used, proceed accordingly. Due to the different positioning options, the different machine axes can also be recorded successively.
  • the scope of the present invention also includes a machining system with a machining head that can be moved by at least one machine axis, preferably by a plurality of machine axes, and a control device. According to the invention, the control device is set up to
  • the processing system can be a laser processing system, in particular a laser cutting system or a laser welding system.
  • the processing head can therefore be a laser processing head.
  • the control device can have one or more computers or can be designed as a computer.
  • the control device can have several control units. In particular, the
  • Control device have an NC control unit and / or a PLC control unit. Furthermore, the control device can have an interface for inputs by operating personnel. Furthermore, the control device can have a higher-level central control unit, which is provided in particular for a number of processing systems. The processing system can have a redundant axis. The processing system can have a workpiece changer.
  • a computer program also falls within the scope of the present invention.
  • the computer program includes program instructions which, when the computer program is executed on a control device of a processing system with a processing head that can be moved by at least one machine axis of the processing system, cause the processing system to carry out a method according to the invention as described above.
  • the computer program makes it possible to use a processing system for carrying out the method according to the invention.
  • a computer program product on which such a computer program is stored also falls within the scope of the present invention is.
  • a computer program product is understood to mean a computer-readable storage medium that contains the computer program in computer-readable form.
  • Also within the scope of the present invention is a collection of computer programs with a plurality of part programs, each of which includes program instructions which, when the respective part program is executed on a control device of a processing system with a processing head that can be moved by at least one machine axis of the processing system, cause the processing system to move at least one workpiece along a trajectory that is identical for all part programs, with a respective sub-area of a maximum range of motion of the machine axis being used for machining the at least one workpiece within the framework of the respective part program, with the sub-areas assigned to the different part programs deviating from one another within predefined limits.
  • a method according to the invention can be carried out by successive execution of the subprograms.
  • the part programs each cause at least one workpiece to be machined along the same trajectory.
  • partial areas of the maximum range of motion assigned to the sub-programs are used for this purpose.
  • the subprograms are matched to one another or differ from one another in such a way that the subareas used for processing deviate from one another within the predefined limits when the several subprograms are executed.
  • the computer program collection can be stored on a computer program product that is also according to the invention.
  • the collection of computer programs can be stored on a master computer for controlling one or more processing machines.
  • the collection of computer programs can contain program instructions which cause the master computer to send one of the subprograms to a (local) control unit of the processing system for execution.
  • the part programs of a (local) control unit of the processing system be transmitted by an operator intervention, in particular the sub-programs can be sent manually to the control unit.
  • the computer program product can be a computer-readable storage medium or a set of computer-readable storage media.
  • a programming system falls within the scope of the present invention which is set up to automatically create an inventive computer program described above and/or an inventive computer program collection described above using a predefined trajectory.
  • the programming system is therefore set up to automatically create a computer program or a set of sub-programs after specifying the trajectory and specification of the limits of the deviation between the sub-areas which, when executed, cause the method according to the invention to be carried out.
  • the limits of the deviation can be explicitly specified for the programming system.
  • the programming system can be set up to determine the limits of the deviation based on the trajectory and based on information about the processing system itself.
  • the trajectory can be provided using a sample program for machining a first workpiece using first partial areas. The programming system makes it easier to carry out the method according to the invention and reduces the programming effort required for this.
  • FIG. 1a shows a machining system according to the invention with a first workpiece that is to be machined along a trajectory, the workpiece being arranged in a first position in a workspace, so that the machining head for machining the workpiece moves along two machine axes in the first sub-areas of its maximum range of motion must, in a schematic plan view;
  • FIG. 2a a processing system according to the invention, wherein a
  • Machining head can be moved in the vertical direction by means of two redundant machine axes, and a workpiece changer
  • Fig. 2b shows the processing system of Figure 2a in a schematic plan view, which can be seen that the workpiece changer
  • FIGS la and lb show a processing system 10.
  • the processing system 10 has a processing head 12 on.
  • Processing system 10 is a laser processing system here, namely a laser cutting system.
  • the machining head 12 can be moved relative to a workpiece table 14 of the machining system 10 along a number of machine axes.
  • the possible movements of the machining head 12 along the horizontally aligned machine axes 16, 18 can be seen as an example.
  • the machine axes 16 and 18 can also be referred to as the X or Y axis.
  • the machining system 10 can have further machine axes for moving the machining head 12, in particular a translatory Z axis and/or one or more rotary axes, for example an A, B and/or C axis.
  • the machine axes 16, 18 are tool axes for moving the machining head 12 relative to the workpiece table 14.
  • the workpiece table 14 has a receiving grid 20 for receiving workpieces 22, 24.
  • the recording grid 20 is designed here by way of example with defined recording positions along the machine axis 18 .
  • FIG. 1a the workpiece 22 is held on the workpiece table 14 in a first position.
  • FIG. 1b the workpiece 24 is held in a second position on the workpiece table.
  • the workpieces 22, 24 are each located within a working space that can be reached by the machining head 12 for machining the processing system 10.
  • the processing head 12 can be moved along the machine axes 16, 18 in a maximum range of motion 26, 28 respectively.
  • the workpieces 22, 24 are here the same size sheet metal.
  • the metal sheets can be referred to as blanks 30 for the processing to be carried out.
  • Identical finished parts 32 are to be cut out of the metal sheets.
  • the workpieces 22, 24 are one
  • the trajectories 34 here represent a cutting line to be introduced into the workpieces 22, 24.
  • the trajectories 34 or the finished parts 32 can be positioned differently within the blanks 30.
  • a zero point 36 from which the machining starts, can be arranged at different points on the blanks 30.
  • the machining system 10 has a control device 46.
  • the control device 46 can be set up to store a history of the processing of workpieces 22, 24 with the processing system 10.
  • the control device 46 can be set up to execute an NC program for machining the different workpieces 22, 24 with different offsets in order to position the respective workpiece 22, 24 under Use of the respective sections 38, 40 and 42, 44 along the trajectory 36 to edit.
  • the control device 46 can receive a separate NC program for each of the workpieces 22, 24 in order to carry out the machining along the trajectory 36 using the respective partial areas 38, 40 or 42, 44.
  • a schematic diagram shows that the partial areas 38, 40 and 42, 44 can deviate from one another within predefined limits 48.
  • the limits 48 can indicate, for example, a maximum distance between the zero points 36 of workpieces 22, 24 arranged differently in the workspace.
  • the limits 48 can be related, for example, to the zero point 36′ of a workpiece positioned at a reference position in the working space. Alternatively, the limits 48 could be related to a translational and/or rotational position of the workpieces 22 and 24, for example.
  • the different partial areas 38, 40 or 42, 44 are each within the maximum range of motion 26, 28.
  • the limits 48 can be the same or different for the different machine axes. The limits are set for the machining to be performed on the workpieces 22, 24 prior to machining the first workpiece.
  • FIGS. 2a and 2b show another processing system 50, in a side view and a top view.
  • the processing system 50 has a processing head 12 .
  • the processing system 50 is a laser processing system here, namely a laser welding system.
  • the processing head 12 is accordingly a laser welding head. To control the processing system
  • control device 46 a control device 46 is provided.
  • the machining head 12 can be moved in a translatory manner along machine axes 16 , 18 , 52 . Furthermore, the machining head 12 can be rotated about a machine axis 54 here, for example. Furthermore, a beam exit device 56 of the processing head 12 can be moved along a machine axis 58 .
  • the beam exit device 56 can have optics for focusing a Machining beam 59, here a laser beam, and / or have a nozzle for a process gas.
  • the machine axes 52 and 58 are arranged parallel to one another (when the machine axis 54 is in the zero position).
  • the machine axis 58 can therefore be referred to as an axis redundant to the machine axis 52 . If the focal position of the processing beam 59 remains the same, a corresponding opposite change in the position of the machine axis 52 can be achieved by changing the position of the machine axis 58 . Consequently, by bringing the beam exit device 56 into different positions with respect to the machine axis 58, a partial area of the maximum movement range of the machine axis 52 that is to be used for machining workpieces 60 can be shifted.
  • a (slight) rotation of the machining head 12 about the machine axis 54 can be used to shift a sub-area of the maximum movement range of the machine axis 16 that is to be used for machining workpieces 60 .
  • the machine axis 54 (depending on the machining to be carried out) can also be referred to as a redundant axis.
  • Welding processes are to be carried out here on the workpieces 60 at identical positions, for example additional parts are to be welded on.
  • the welding positions define identical trajectories for machining on the workpieces 60.
  • a workpiece changer 62 is provided in order to arrange the workpieces 60 in the working space of the machining system 50 .
  • the workpiece changer 62 has an arm 66 which can be rotated about a workpiece axis 64 .
  • a rotation about the workpiece axis 64 causes a change in the position and orientation of the workpieces 60 in the workspace.
  • the workpiece axis 64 runs parallel to the beam direction of the machining beam 59 when the machining head 12 is in the zero position with respect to the machine axis 54 .
  • the workpiece axis 64 can also be referred to as a redundant axis.
  • a dashed line shows how the position of the workpiece 60 changes in the working space of the machining system 50 when the workpiece changer 62 is rotated by an increment about the workpiece axis 64.
  • a predetermined number of workpieces arranged identically in the workspace are machined, with the same partial areas of the maximum range of movement of the machine axes being used for the machining.
  • a counter 106 records the number of workpieces processed. If the counter 106 determines that a predetermined number of workpieces has been machined with a movement in the first partial areas, in a step 108 the partial areas to be used for machining are shifted.
  • the displacement takes place taking into account limits specified in a step 102 before the start of the machining of the first workpiece. Provision can be made for the displacement to take place randomly within the specified limits.
  • the partial areas are preferably shifted by predefined increments.
  • the workpieces can be arranged at different positions of the receiving grid 20 (compare FIGS. 1a and 1b).
  • the position of the workpieces can be changed using the workpiece axis 64 (compare FIG. 2b).
  • a redundant machine axis 58 can also be brought into a different position for shifting the partial areas to be used (compare FIG. 2a).
  • a persistent counter can be set up in the control device 46 of the processing system 10 . If the predetermined number of workpieces has been machined at the same position, a user interface can output a corresponding message and prompt operating personnel to attach the workpieces to the next position of the receiving grid 20 (also compare FIGS. 1a, 1b).
  • the processing system 50 has two redundant axes 52, 58 (compare FIG. 2a). Provision can be made for the position of the beam exit device 56 to be shifted along the machine axis 58 within a range of +/-2 mm by an increment of 0.01 mm after each workpiece has been machined.
  • the controller 46 may include a persistent flag for storing the adjusted zero position of the machine axis 58 .
  • it is provided that the orientation of the processing head is changed after processing ten workpieces.
  • a pivoting range of the machining head can be +/-1° for a B-axis (compare the machine axis 54 in FIGS. 2a and 2b).
  • a swivel range for a C-axis can be +/-3°.
  • An increment for the change in orientation can be 0.01° in each case.
  • a persistent marker for storing the adjusted zero positions of the B and C axes, taking into account the shift interval and increment, can be set up in the control device.
  • a fourth example provides that after 1000 workpieces have been machined, the position of an arm 66 of a workpiece changer 62 (compare FIG. 2b) is changed by an increment of 0.2° within a range of +/-2°.
  • the control device 46 can be set up to recalculate a zero point frame for the machining of the workpieces 60 after each change in the zero position of the workpiece changer 62 .
  • the control device 46 can have a persistent marker for storing the adjusted zero position of the workpiece changer 62 .
  • the programming system can be used.
  • the programming system has information about the processing system, for example its kinematic redundancies. Furthermore, it can be provided that the programming system can access a load history of the processing system. To the
  • a trajectory is specified in the programming system. If necessary, the limits of the deviations are also specified; alternatively, the programming system can determine the limits itself. Based on the trajectory, the limits and, if applicable, the load history, the programming system can create an adaptive computer program which, when executed, successively changes the sub-areas of the maximum range of motion used for processing different workpieces. Alternatively, the programming system can create a set of subprograms which, when they are executed, use subareas for processing that differ from one another within the limits. In principle, such an adaptive computer program or such a collection of partial programs could also be created without the support of the programming system.
  • processing system 10 50 processing head 12 workpiece table 14
  • Beam exit device 56 Processing beam 59 Workpiece changer 62 Workpiece axis 64 Arm 66

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
  • Numerical Control (AREA)

Abstract

L'invention concerne un procédé pour usiner une pluralité de pièces (22). Pour permettre l'usinage de chacune des pièces (22), une tête d'usinage (12) d'une installation d'usinage (10) et la pièce (22) respective sont déplacées l'une par rapport à l'autre par au moins un arbre machine (16, 18) de l'installation d'usinage (10) de sorte que les pièces (22) sont usinées respectivement le long de la même trajectoire (34). Pour permettre l'usinage de plusieurs pièces (22), le déplacement s'effectue dans différentes zones partielles (38,40) d'une circonférence de déplacement maximale (26, 28) de l'au moins un arbre machine (16, 18), lesdites zones partielles (38,40) différant les unes des autres dans des limites prédéfinies.
PCT/EP2022/057725 2021-04-15 2022-03-24 Procédé, installation d'usinage et programme informatique pour usiner une pluralité de pièces WO2022218667A2 (fr)

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DE102021203759.3 2021-04-15
DE102021203759.3A DE102021203759A1 (de) 2021-04-15 2021-04-15 Verfahren, Bearbeitungsanlage und Computerprogramm zum Bearbeiten einer Vielzahl von Werkstücken

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Citations (2)

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DE102008033709A1 (de) 2008-07-18 2010-01-21 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zur Verlagerung der Bearbeitungsstelle eines Werkstücks und Werkzeugmaschine
DE102013217126A1 (de) 2013-08-28 2015-03-05 Trumpf Laser- Und Systemtechnik Gmbh Verfahren zum Feststellen von Abweichungen einer Ist-Lage eines Laserbearbeitungskopfes von einer Soll-Lage

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JP3516575B2 (ja) * 1997-08-29 2004-04-05 株式会社日平トヤマ レーザ加工装置
JP3364464B2 (ja) * 2000-01-18 2003-01-08 川崎重工業株式会社 自動加工装置
DE102014109065B4 (de) * 2014-06-27 2017-12-14 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Laserbearbeitungsanlage, Laserbearbeitungskopf und Überwachungsverfahren der Laserbearbeitungsanlage
DE102015210679B4 (de) 2015-06-11 2018-06-21 Trumpf Sachsen Gmbh Verfahren zum trennenden Bearbeiten eines plattenartigen Werkstücks sowie Werkzeugmaschine und Bearbeitungsprogramm zum Durchführen des Verfahrens
WO2018224868A1 (fr) 2017-06-09 2018-12-13 Bystronic Laser Ag Procédé de commande d'un dispositif de découpe au jet comprenant un outil de découpe, procédé mis en œuvre par ordinateur pour déterminer et générer automatiquement des instructions de déplacement destinées à commander un outil de découpe d'un dispositif de découpe au jet, et dispositif de découpe au jet pour mettre en œuvre le procédé
DE102019206274A1 (de) 2019-05-02 2020-11-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zum trennenden Schneiden einer Mehrzahl von Werkstückteilen

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
DE102008033709A1 (de) 2008-07-18 2010-01-21 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zur Verlagerung der Bearbeitungsstelle eines Werkstücks und Werkzeugmaschine
DE102013217126A1 (de) 2013-08-28 2015-03-05 Trumpf Laser- Und Systemtechnik Gmbh Verfahren zum Feststellen von Abweichungen einer Ist-Lage eines Laserbearbeitungskopfes von einer Soll-Lage

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