Manufacturing system and methods for monitoring a manufacturing station

Abstract

Manufacturing system (7) comprising at least one manufacturing station (2) for the additive manufacturing of components and a transport system (6) for moving build platforms (8) to the manufacturing station (2) and for moving the build platforms (8) away from the manufacturing station (2), wherein the build platforms (8) are designed as the basis for the additive manufacturing of components, wherein the manufacturing system (7) comprises at least one monitoring device (1) for monitoring the manufacturing station (2), wherein the monitoring device (1) comprises at least one detection device (3) for determining at least one process parameter in the manufacturing station (2) and a receiving device (4) for receiving the detection device (3), characterized in that the monitoring device (1) has a transport interface (5) for connecting the monitoring device (1) to the transport system (6).

Description

The present invention relates to a production system having a monitoring device for monitoring a production station for an additive production method, in particular a production station for an SLM process, and to a method for monitoring at least one production station of a production system.From the documents US 2002 / 0 104 973 A1, DE 100 53 741 C1, DE 10 2013 008 774 B3, DE 10 2011 009 624 A1 and DE 10 2009 036 153 A1, various production systems with monitoring devices are known.A plurality of different additive manufacturing methods are known, in which a component is additively generated layer by layer on a construction platform by means of a manufacturing station. A common additive method is selective beam melting, which is also referred to as "selective laser melting" or "SLM method". In SLM methods, a layer of a powder or granulate of a fusible component material is uniformly applied to a construction platform. By means of a high-power laser, at least one defined partial region of the layer is heated in such a way that the component material is melted in this partial region. The partial region corresponds to a layer of the component to be produced. The powder or granulate in this sub-region forms a composite by the melting, which cools and solidifies after heating by the laser.In the case of components which have to be produced from a plurality of layers, these processes are carried out repeatedly until the component to be produced is finished. In this case, in known methods, the construction platform is lowered by a layer thickness of the layer produced last relative to the high-power laser, so that a surface of the component layer produced is arranged optimally with respect to the high-power laser for producing a further component layer on the surface as a function of a focusing of the high-power laser. A new powder or granulate layer is then applied to the already produced component layer and the construction platform and a further component layer is produced by targeted melting of the component material by means of the laser beam. In this way, very complex components, which have cavities or undercuts, for example, can be produced. To increase the process safety, in particular to ensure uniform melting and accurate boundary of the defined subareas, additive manufacturing methods of this type are often carried out within a protective atmosphere, preferably with the exclusion of oxygen and moisture.The quality, in particular process safety and process accuracy, of additive manufacturing methods is dependent on a large number of different factors. In the case of SLM methods, quality-influencing factors are, in particular, a moisture content of the powder, a powder distribution, the causality and intensity of the laser beam and the composition and pressure of the protective atmosphere. In order to ensure high process reliability or process accuracy, manufacturing stations for additive manufacturing of components and components or component layers produced by such manufacturing stations must be subjected to quality control at regular time intervals.For conventional process monitoring of a manufacturing station for an SLM method, manufacturing stations have measuring devices, such as thermographic cameras or camera systems for monitoring molten bath dynamics and for good-poor comparisons. These devices are often firmly connected to a production station and only allow monitoring of the component layer during and after its production. Some manufacturing stations have integrated laser power measuring devices, which are configured only for measuring a power of the laser beam. The conventional process monitoring of manufacturing stations accordingly has the disadvantage that the process parameters relevant to the quality of the tool laser can only be determined insufficiently. Furthermore, integrated measuring devices cause high investment and maintenance costs and have a high probability of failure.In order to determine further process parameters of the laser precisely, such as a causal system, the production of the production station must first be stopped. Special measuring devices, e.g. for measuring the causality of the laser beam, are subsequently arranged at the production station for examining the laser beam. Such a determination has the disadvantage that this process is very time-consuming and requires a production stop of the production station. This causes high costs due to manufacturing losses. Spontaneous checking of the process parameters of a laser, for example on the basis of a suspected defect, is not possible without a massive impairment of the production.It is therefore an object of the present invention to eliminate or at least partially eliminate the above-described disadvantages in a production system having a monitoring device for monitoring a production station for an additive production method and a method for monitoring at least one production station of a production system. In particular, it is the object of the present invention to provide a production system and a method for monitoring at least one production station of a production system, which enable the monitoring of process parameters of a production station in a simple and cost-effective manner. Furthermore, production stalls required for ascertaining the process parameters are to be reduced.The above object is achieved by the patent claims. Accordingly, the object is achieved by a manufacturing system having the features of claim 1 and by a method for monitoring at least one manufacturing station of a manufacturing system having the features according to claim 10. Features and details which are described in connection with the production system according to the invention naturally also apply in connection with the method according to the invention for monitoring at least one production station of a production system and vice versa, so that with regard to the disclosure reference is or can always be made to the individual aspects of the invention in a mutually alternating manner.According to the first aspect of the invention, the object is achieved by a production system for the additive production of a component. The production system has at least one production station for the additive production of components and a transport system, wherein the transport system is designed for moving construction platforms towards the production station and for moving the construction platforms away from the production station. The construction platforms are designed as bases for additive manufacturing of components. Moreover, the production system has at least one monitoring device for monitoring a production station for an additive production method. The monitoring device has at least one determination device for determining at least one process parameter in the production station and a recording device for recording the determination device. The monitoring device has a transport interface for connecting the monitoring device to a transport system of a production system. The transport system is designed, for example, to move construction platforms towards the production station and away from the production station. In this case, the transport interface can be arranged on the receiving device, which also receives the at least determination device.A monitoring device is, in the sense of the invention, a device which is designed for determining and / or measuring process parameters, such as, for example, the condition of a powder layer surface, the surface temperature at a melting point of the powder layer, the dynamics of a melt bath or the condition of a component surface produced. For the sake of simplicity, process parameters such as, for example, intensity of the laser beam and process results such as, for example, the nature of a component layer are not distinguished within the scope of the invention and are collectively referred to as process parameters. For ascertaining the process parameters, the monitoring device has at least one ascertainment device. The determination device is held on a receiving device of the monitoring device. The monitoring device can preferably be arranged at a manufacturing station in such a way that a manufacturing process within the manufacturing station can be monitored by the monitoring device and is not impaired by the monitoring device. It can furthermore be provided that the monitoring device, for example for determining the causality of the laser beam, can be arranged at the production station in such a way that no production process can take place for the duration of the measurement of the causality.A production station is a device which is designed for additive production of components in a working region, such as an SLM production station. The additive manufacturing or production of the component is carried out, for example, on a construction platform. In an SLM manufacturing station, the construction platform is designed, for example, to receive the powder- or granulate-shaped component material and has a closed or substantially closed base surface. The construction platform is connected to a transport system of a production system and is thus movable towards the production station and away from the production station.The transport interface is preferably designed as a complementary part to a counter transport interface of a transport system of a production system for moving construction platforms. That is to say that the transport interface can preferably be coupled to a corresponding counter transport interface of the transport system, such as a rail or a carriage guided on a rail. Such a carriage can also be designed, for example, to accommodate a construction platform. Alternatively, the transport interface can also be designed for connection to a transport system which is designed substantially for moving the monitoring device. By means of the transport interface, the complete monitoring device, which has at least one receiving device with at least one determination device, can be moved relative to the production station. This enables easy guidance of the monitoring device to the manufacturing station and easy removal of the monitoring device from the manufacturing station.Furthermore, it can be provided according to the invention that the monitoring device is designed to be aligned and / or held relative to the production station. An optimal alignment of the monitoring device with respect to the production station is particularly important for the precise determination of the process parameters. Moreover, the monitoring device is preferably designed to be decoupled from the transport system at the production station, so that construction platforms can be moved by means of the transport system, while the monitoring device is arranged at the production station. This has the advantage that an interruption of a continuous production of the components is not absolutely necessary if the monitoring device is arranged at the production station.A production system in the sense of the invention is a system which is designed for producing the component by means of the additive production method. Basic elements of such a manufacturing system are, for example, the construction platform, a manufacturing station for producing a powder layer of component material on the construction platform and for the targeted melting of at least one partial region of the powder layer to produce a component layer, and a transport system for moving the construction platforms towards the manufacturing station and away from the manufacturing station. The powder layer is preferably produced in a production region and the melting is carried out in a working region of the production station, wherein preferably at least one construction platform can be arranged simultaneously in each case in the production region and in the working region. In this way, a load on the manufacturing system is improved.A monitoring device according to the invention has the advantage that a plurality of process parameters of the production station and of the process result can be monitored during the ongoing production. The monitoring device can easily be arranged at the production station and removed from it again. This is also advantageous for maintenance or repair of the monitoring device. Production stalls are thus avoidable or substantially avoidable. Furthermore, a plurality of manufacturing stations can be monitored by a monitoring device. This makes it possible to save in particular investment costs.According to a preferred development of the invention, it can be provided in a monitoring device that the transport interface has a wheel and / or a carriage and / or a fixing interface for connection to a counter transport interface of the transport system, to a construction platform and / or to a construction platform carrier. Such a transport interface is designed, for example, for connection to a rail-based transport system and is accordingly movable on the rails, e.g. in common mode with construction platforms or construction platform carriers arranged on the rails for supporting the construction platforms. Alternatively, the transport interface is designed for connection to the transport system via the construction platform or the construction platform carrier. In this case, the monitoring device can be coupled via the transport interface, for example, to a construction platform carrier and can therefore be moved together with the latter on the transport system. It is preferred that a monitoring device arranged at the manufacturing station can be decoupled from the transport system, the construction platform or the construction platform carrier in order not to prevent a movement of construction platforms towards the manufacturing station and away from the manufacturing station. In this way, the manufacturing station can be monitored by the monitoring station during continuous manufacturing.Furthermore, it can be provided that the monitoring device, in particular the receiving device, has at least one protective wall, wherein the protective wall is designed to protect the determination device from environmental influences. The protective wall is formed, for example, for shielding the detection device from the powder layer in order to protect the detection device, for example, from high temperatures. According to the invention, it can be provided that the protective wall is transparent.The determination device is preferably designed for measuring a causal factor and / or power of a laser beam and / or for determining a temperature and / or for optically analyzing a surface, in particular a generated powder layer and / or component layer. By means of such a determination device, process parameters of the production station relevant to a quality of an additively generated component can be checked. The causals are measured, for example, by retracting at least a part of the monitoring device into an optical path of the laser and deflecting a part of the laser beam which has, for example, 2% of the intensity of the laser beam. Thus, it is ensured that the monitoring device is not damaged by the laser. The causality of the total laser beam can be determined by means of the deflected laser beam. During this operation, production is temporarily stopped. An advantage of a determination device which is designed to determine a multiplicity of different process parameters is that only one monitoring device is required to determine the different process parameters. As a result, a monitoring process of the production station can be improved. Furthermore, space and costs can be saved as a result.It is preferred that the detection device comprises a CCD chip and / or an IR sensor. According to the invention, it can be provided that an ascertainment device has a plurality of these chips or sensors. This has the advantage that a plurality of different process parameters can be monitored. Furthermore, a redundancy can ensure that process parameters can be reliably determined even in the case of a damaged or soiled determination device.A construction platform is a base on which the component can be additively produced and preferably has a planar or substantially planar base surface. The production station is designed, for example, to carry out an SLM method. Such a production station has, for example, at least one melting station for the targeted melting of a defined region of the powder layer. The melting station has, in particular, a laser. It can be provided that the production station, in addition to the melting station, also has a provision station for arranging the powder or granulate layer of component material on the construction platform. The provision of component material and the melting of the component material can thus be carried out simultaneously on different construction platforms. The construction platform can then be removed from the production station by the reflow station, the construction platform can be moved from the provision station to the reflow station and, if appropriate, a further construction platform can be moved to the provision station.The transport system is designed for moving the construction platforms along the transport system, e.g. on a rail of the transport system. The construction platforms can thus be supplied to the production station, e.g. for producing a component and can be moved away from the latter, e.g. for forwarding the produced component.The production system preferably has an encapsulation which enables a protective atmosphere to be provided. This is advantageous in particular when melting the component material, since the generation of a damaged or defective component layer is thus reduced.The described manufacturing system yields all advantages which have already been described with regard to a monitoring device for monitoring a manufacturing station for an additive manufacturing method according to the first aspect of the invention.In an advantageous embodiment of the invention, the monitoring device is coupled to the transport system via a transport interface of the monitoring device. The transport interface of the monitoring device can preferably be coupled to a part, in particular a counter transport interface, of the transport system and is designed, for example, as a carriage which can be arranged, for example, on a rail of the transport system and can be guided along the latter. Alternatively, the transport interface can be designed to indirectly couple the monitoring device to the transport system, for example for coupling to a construction platform which is coupled to the transport system, for example, via a carriage guide. This has the advantage that decoupling the monitoring device from the transport system is possible easily and with simple means. It is preferred according to the invention that the monitoring device can be decoupled from the transport system, in particular at the production station. Construction platforms can thus be moved by means of the transport system while the monitoring device remains arranged at the production station. Process parameters can thus be determined by means of the monitoring device during ongoing production. It is preferred only during the measurement of the causality of the laser beam that the production is stopped, since the beam path of the laser is taken into account during the measurement.According to a preferred development of the invention, it can be provided in a monitoring device that the monitoring device is designed to be moved into a working area of the manufacturing station by means of the transport system in order to determine at least one process parameter of the manufacturing station. As a result, the monitoring station can be moved back and forth within the manufacturing system reliably and flexibly using simple means to a place of use of the monitoring device. As a result, downtime of the manufacturing system and investment costs can be advantageously reduced.It is preferred that the production station is designed to carry out an SLM method for additive production of a component.According to a second aspect of the invention, the object is achieved according to the invention by a method for monitoring at least one production station of a production system according to the invention, wherein the production station is designed for additive production of a component by an SLM method. The method comprises the following steps:moving the monitoring device to a working area of a manufacturing station by means of a transport system of the manufacturing system, wherein the transport system is designed for moving construction platforms toward the manufacturing station and for moving the construction platforms away from the manufacturing station,determining at least one ACTUAL process parameter of the manufacturing station by means of a determination device of the monitoring device,evaluating the at least one determined actual process parameter, andmoving the monitoring device away from the working area of the manufacturing station by means of the transport system of the manufacturing system.When moving the monitoring system to a work area of a manufacturing station, the monitoring system is coupled to a transport system of the manufacturing system. A working region is a region at the production station in which the powder layer and / or at least one component layer are produced by melting the powder. In this case, the monitoring system can be moved to the working area and / or to the working area depending on the requirement. For this purpose, the monitoring system is preferably coupled to the transport system via a construction platform and is thus moved together with the construction platform to or into the work area.The determination of the at least one ACTUAL process parameter takes place either during a running production process, e.g. an optical monitoring of a powder layer or component surface, or without running production in the monitored region of the production station, e.g. during a measurement of the causals of the laser. During the measurement of the causals, the laser is preferably operated normally, i.e. the laser is operated as during the production of the component layer. At least a part of the monitoring device is arranged between laser and powder, so that no powder is melted during the measurement of the caustic. According to the invention, it can be provided that a plurality of different actual process parameters, such as pressure, temperature or surface condition, are determined. Furthermore, the determination of the ACTUAL process parameter can be carried out, for example, once, repeatedly or continuously.When evaluating the at least one ACTUAL process parameter, it is determined whether or not the ACTUAL process parameter is in a defined normal range. An ACTUAL process parameter outside the normal range means that the manufacturing station has a fault and a quality of the components produced or a process safety of the manufacturing station cannot be ensured. Action, such as repair, maintenance, cleaning or calibration of the manufacturing station is accordingly required.After a sufficiently large number of ACTUAL process parameters have been determined in order to be able to assess an operating mode or functionality of the production station, that is to say at least one ACTUAL process parameter, the monitoring device is moved away from the working region again via the transport system and is available for monitoring a further production station. This has the advantage that only one monitoring device is required for monitoring a plurality of manufacturing stations. This makes it possible to reduce investment costs.The method described yields all the advantages which have already been described with regard to a monitoring device for monitoring a manufacturing station for an additive manufacturing method according to the first aspect of the invention.It is preferred that a causal factor and / or power of a laser beam and / or a condition of a component layer surface of a component layer generated by means of the manufacturing station and / or a temperature in the manufacturing station and / or the component layer are determined as ACTUAL process parameters. Such process parameters can be easily determined by means of the monitoring unit and provide qualitative and quantitative information about a mode of operation or a state of a production station.Particularly preferably, ACTUAL process parameters determined during the evaluation are compared with predetermined TARGET process parameters. Thus, any deviation of the ACTUAL process parameters from the DESIRED process parameters can be determined. This deviation can be quantified, so that when the deviation of a predefined threshold value is exceeded, a corresponding feedback can be output to an operator of the manufacturing system, so that corresponding correction or maintenance or repair measures can be carried out as needed.An alarm is preferably triggered from a predetermined maximum deviation of an ACTUAL process parameter from a TARGET process parameter and / or the production of the manufacturing station and / or of the manufacturing system is stopped and / or regulated via a corresponding control or regulation of the process parameters. Thus, a fault can be easily detected and measures for eliminating the fault can be initiated.According to the invention, it can be provided that the monitoring device or at least a part of the monitoring device is arranged between a working position of a construction platform and a laser of the production station. This is advantageous, for example, for a measurement of the causality of the laser beam. In this case, for example, branching optics are brought into an optical path of the laser for branching off a part of the laser beam. The causality of the laser beam can be determined on the basis of the branched-off part. A working position is a position at which the construction platform can be arranged on or in the working region of the production station for the targeted melting of a specific region of the powder layer. When performing the method, it is immaterial, within the scope of performing a measurement of the causality of the laser beam, whether or not a construction platform is arranged at the working position. Preferably, a construction platform loaded with a powder layer is arranged at the working position so that the production of the component can be resumed as quickly as possible following the measurement of the causal system.In an advantageous embodiment of the method, the monitoring device is arranged in the working area of the manufacturing station in such a way that an SLM method for layer-by-layer generation of a component is still possible in the working area by means of the manufacturing station. It is thus possible to determine process parameters, such as temperature, melt bath dynamics, powder surface and component surface formation, for example, during the production or production of components. This has the advantage that down times of the production system are thus reduced and production costs are thus reduced.A monitoring device according to the invention for monitoring a manufacturing station for an additive manufacturing method and a manufacturing system according to the invention are explained in more detail below with reference to drawings. They show in each case schematically: FIG. 1 shows a side view of a preferred embodiment of a monitoring device according to the invention, and FIG. 2 shows a plan view of a detail of a preferred embodiment of a production system according to the invention.Elements with the same function and mode of operation are provided with the same reference numerals in each of FIGS. 1 and 2.FIG. 1 schematically shows a preferred embodiment of a monitoring device 1 according to the invention in a side view. The monitoring device 1 has a receiving device 4 which, in this exemplary embodiment, is embodied in the form of a frame with two recognizable vertical carriers 4 aand two recognizable horizontal carriers 4 b. The receiving device 4 preferably has at least four vertical carriers 4 a. The vertical supports 4 aand / or horizontal supports 4 bmay also be plate-shaped. Alternatively, it can also be provided that the receiving device 4 is designed as a C-stand with only one or two vertical supports 4 a.On the right-hand vertical carrier 4a in this illustration, a CCD chip 11 and an IR sensor 12 of a detection device 3 indicated by a dashed line are arranged. On the upper horizontal support 4 b, a pivoting device 17 with a branching optics 16 of the detection device 3 is arranged. By means of the pivoting device 17, the branching optics 16 can be pivoted into a beam path of a laser beam. The movement of the branching optics 16 into the beam path can also be effected via an alternative device, e.g. translatory, rotatory or combined.On the side of the lower horizontal carrier 4 b, a transport interface 5 for connecting the monitoring device 1 to a transport system 6 of a production system 7 (cf. FIG. 2 ), in particular to a counter transport interface of a transport system 6 of a production system 7, is arranged. The transport interface 5 is designed as a fixing interface 9 for releasably fixing the monitoring device 1 to a construction platform 8 of the production system 7 (cf. FIG. 2 ). Laterally formed on the upper horizontal carrier 4 bare holding interfaces 18 for holding the monitoring device 1 at the production station 2 (cf. FIG. 2 ). Thus, the monitoring device 1 can be decoupled from the transport system 6 and fixed at the production station 2, while the transport system 6 moves construction platforms 8.FIG. 2 schematically shows a plan view of a section of a production system 7 according to the invention. The production system 7 has a production station 2 for the additive production of a component by means of a laser 15. Construction platforms 8, on which the components can be produced, can be moved in the transport direction T into a working position 14 at a working area 13 of the manufacturing station 2 via a transport system 6, for example before the production of the component, and can be moved away from the working position 14 again in the transport direction T, for example after the production of the component. A monitoring device 1 according to the invention is arranged on a construction platform 8 and is thus movable together with the latter by means of the transport system 6 in the transport direction T.To monitor the manufacturing station 2, the monitoring device 1 can be moved into the manufacturing station 2 and temporarily fixed to it via holding interfaces 18 (cf. FIG. 1 ), wherein the monitoring device 1 can be decoupled from the construction platform 8 and thus from the transport system 6 for this purpose. The production station 2 can thus be monitored by means of the monitoring device 1 even during ongoing production.List of reference characters1 Monitoring device 2 Production station 3 Detection device 4 Recording device 4 a Vertikal carrier 4 b Horizontal carrier 5 Transport interface 6 Transport system 7 Production system 8 Construction platform 9 Fixing interface 10 Protective wall 11 CCD chip 12 IR sensor 13 Working region 14 Working position 15 Laser 16 Branching optics 17 Pivoting device 18 Holding interface T Transport direction

Claims

Production system (7) comprising at least one production station (2) for additive production of components and a transport system (6) for moving construction platforms (8) towards the production station (2) and for moving the construction platforms (8) away from the production station (2), wherein the construction platforms (8) are designed as bases for additive production of components, wherein the production system (7) comprises at least one monitoring device (1) for monitoring the production station (2), wherein the monitoring device (1) comprises at least one determination device (3) for determining at least one process parameter in the production station (2) and a receiving device (4) for receiving the determination device (3), characterized in that the monitoring device (1) comprises a transport interface (5) for connecting the monitoring device (1) to the transport system (6).Production system (7) according to claim 1, characterised in that the transport interface (5) has a wheel and / or a carriage and / or a fixing interface (9) for connection to a counter transport interface of the transport system (6), to a construction platform (8) and / or to a construction platform carrier.Production system (7) according to Claim 1 or 2, characterized in that the monitoring device (1) has at least one protective wall (10), wherein the protective wall (10) is designed to protect the determination device (3) from environmental influences.Production system (7) according to one of the preceding claims, characterized in that the determination device (3) is designed for measuring a causal factor and / or power of a laser beam and / or for determining a temperature and / or for optically analyzing a surface.Production system (7) according to one of the preceding claims, characterized in that the detection device (3) has a CCD chip (11) and / or an IR sensor (12).Production system (7) according to one of the preceding claims, characterized in that the monitoring device (1) is designed to be decoupled from the transport system at the production station.Production system (7) according to one of the preceding claims, characterized in that the monitoring device (1) is coupled to the transport system (6) via the transport interface (5).Production system (7) according to one of the preceding claims, characterized in that the monitoring device (1) is designed to be moved into a working region (13) of the production station (2) by means of the transport system (6) in order to determine at least one process parameter of the production station (2).Production system (7) according to one of the preceding claims, characterized in that the production station (2) is designed to carry out a selective laser melting method (SLM method) for additive production of a component.Method for monitoring at least one production station (2) of a production system (7) according to one of the preceding claims, wherein the production station (2) is designed for additive production of a component by an SLM method, having the steps: - moving the monitoring device (1) of the production system (7) to a working region (13) of the production station (2) by means of the transport system (6) of the production system (7), wherein the transport system (6) is designed for moving construction platforms (8) towards the production station (2) and for moving the construction platforms (8) away from the production station (2), - determining at least one ACTUAL process parameter of the production station (2) by means of a determination device (3) of the monitoring device (1), - evaluating the at least one determined ACTUAL process parameter, and moving the monitoring device (1) away from the working area (13) of the production station (2) by means of the transport system (6) of the production system (7).Method according to Claim 10, characterized in that the ACTUAL process parameter determined is a causal factor and / or power of a laser beam and / or a condition of a component layer surface of a component layer produced by means of the production station (2) and / or a temperature in the production station (2) and / or the component layer.Method according to Claim 10 or 11, characterized in that ACTUAL process parameters determined during the evaluation are compared with predetermined SETPOINT process parameters.Method according to claim 12, characterised in that an alarm is triggered starting from a predetermined maximum deviation of an ACTUAL process parameter from a TARGET process parameter and / or the production of the production station (2) and / or of the production system (7) is stopped and / or is regulated by means of a corresponding control or regulation of the process parameters.Method according to one of Claims 10 to 13, characterized in that at least part of the monitoring device (1) is arranged between a working position (14) of a construction platform (8) and a laser (15) of the production station (2).Method according to one of Claims 10 to 13, characterized in that the monitoring device (1) is arranged in the working region (13) of the production station (2) in such a way that an SLM method for layer-by-layer production of a component is still possible in the working region (13) by means of the production station (2).

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