EP2288537A1

EP2288537A1 - Method for optimising the life cycle of measurement data based on the retroaction during assembling processes whilst being produced

Info

Publication number: EP2288537A1
Application number: EP10716314A
Authority: EP
Inventors: Henning Schriever; Erdal Karaca; Tanja Klostermann
Original assignee: Airbus Operations GmbH
Current assignee: Airbus Operations GmbH
Priority date: 2009-04-16
Filing date: 2010-04-13
Publication date: 2011-03-02
Also published as: US8352057B2; US20110208340A1; WO2010119023A2; DE102009002432A1

Description

Method for the feedback-based optimization of a measurement data life cycle in joining processes in production

The invention relates to a method for the feedback-based optimization of a measured data life cycle in joining processes in manufacturing, in particular in the manufacture of aircraft and in general mechanical engineering.

Moreover, the invention relates to a device for carrying out the method according to the invention.

With the start of production of the A380 wide-bodied aircraft, a new assembly concept was introduced. So far, rigid construction devices have been used, which ensured a high accuracy and reproducibility of the components. However, they are very expensive and space-consuming, since a separate device must be provided for each component. A metrological proof was usually only in the form of a periodic review of the construction device.

In the new, more flexible construction devices various components can be added. This happens, for example, during section assembly. Here prefabricated components (shells) are internally and / or externally integrated in so-called building sites in stages to a complete section, that is aligned and assembled. The subassemblies (eg structural components, such as shells, floor scaffoldings or technical system components) are partially recorded only over three receiving points and aligned by corresponding positioners in space. Several such prefabricated fuselage sections are aligned in a further building site one behind the other and then assembled into a complete fuselage. Systematic deformations due to installation position and dead weight of the subassemblies are therefore to be assumed. In the context of process control, production and quality assurance, continuous measurement, the Measurement data management and the analysis during the manufacture of the components and their construction devices to assess the reproducibility of the manufacturing process and the component quality in importance.

Within the framework of the section construction method known from the prior art, such building sites are generally designed only as "isolated solutions", that is, the processes taking place in a building site take place independently of the processes in further upstream or downstream production stages. However, this approach has the disadvantage that results resulting, for example, from the measurement of components can not be efficiently integrated into the upstream or downstream production processes. As a result, error-prone manual and / or redundant interventions in the running in the construction sites manufacturing steps are necessary, whereby the assembly cost is significantly increased and the productivity and quality are affected. In addition, interface problems between the individual building sites lead to information losses, which often require time-consuming re-entry of data already incurred in an upstream or downstream building site.

The lack of globally networked and media-break-free data management according to the prior art also means that no current information about the respective production status can be retrieved locally and, for example, tolerance overruns during the production sequence can not be identified and eliminated. Apart from this, there is no automated forwarding and further processing of measurement data in existing construction sites, including consideration of determined measurement data from previous measurement cycles, so that a gradual improvement of the manufacturing quality between the components to be joined in the section construction is made more difficult.

Due to the above-mentioned disadvantages, the existing production processes for the production of aircraft by way of section construction can meet only partially future requirements with globally distributed production facilities.

Increasing global competition has led to increasingly higher customer expectations in terms of quality. In order to safeguard and increase competitiveness, industrial companies are increasingly adapting their products to the requirements of requirements and individual requirements of their customers. In order to be competitive and to maintain good economic performance, organizations and / or suppliers must increasingly apply effective and efficient systems. Such systems should lead to continuous quality improvements and increased satisfaction of customers and other stakeholders of the organization. For such an organization to function effectively, it must identify, guide and direct many interlinked activities. An activity that uses resources and that is executed to enable the conversion of inputs into results can be considered as a process. Often, the result of one process is the direct input for the next one. The relevant international standards of the EN ISO 9000 family ¹⁾ provide a guideline for a process-oriented approach. In the context of this application, measurement processes are to be understood as special processes that contribute to increasing the quality of the products manufactured by an organization.

The object of the invention is to avoid the above-mentioned disadvantages of the known manufacturing processes and the joining process in the production before the start of production of the components by statistically based analysis and simulation, consistency check, a targeted alignment and alignment of components with subsequent target actual To optimize comparison, evaluation and result feedback in the subsequent process cycle. In addition, the joining processes in production can be successively improved via the feedback mechanism, shorten production times and, as a result, reduce the production costs.

The object of the invention is achieved by a method with the following method steps according to claim 1:

1) Analysis and simulation of the production on the basis of assumptions, in particular of production data, for the creation of an initial production concept and / or test concept,

2) creation and / or adaptation of a production and / or inspection order,

¹⁾ With the publication of EN ISO 9001 2000 the EN ISO 9001 1994 - EN ISO 9003 1994 is replaced 3) Consistency check of the production and / or inspection order,

4) export and storage of the manufacturing and / or test order,

5) Aligning and / or joining a component from at least two subassemblies in a building site, 6) analysis and simulation of production based on real measurement results and

Feedback of an optimized production and / or test concept in process step 2), and 7) at least one repetition of process steps 2) to 6).

As a result of the feedback provided in method step 6), the method as a result allows a successive minimization of, in particular, tolerance deviations in joining processes over the entire service life cycle of the measured values. By means of the method according to the invention, the transparency of complex, possibly globally distributed, production processes in the production of components is improved and, at the same time, global control of the respective production status is opened at all times. As a result, in addition to an increase in the quality of the manufactured products, the production costs are minimized at the same time.

In accordance with a further development of the method, it is provided that the production data include, among other things, test features, measured variables, tolerances and alignment parameters.

This ensures that all parameters which are central to product quality are incorporated into the method according to the invention.

A further advantageous embodiment of the method provides that in a method step 5a), a measurement of the subassemblies and a storage of metrological parameters obtained therefrom takes place.

As a result of the real measurement of the subassemblies to be joined together, in conjunction with the feedback of the resulting corrected test features and metrics and the optimized tolerance and alignment parameters in step 6), continuous monitoring and improvement of the ongoing manufacturing process based on the physical component data is enabled ,

Further advantageous embodiments of the method are set forth in the following claims. In addition, the object of the invention is achieved by a device having the following features according to claim 16: a) at least one construction site, b) at least one positioning device for aligning the at least two

Sub-assemblies, c) at least one joining device for joining the at least two subassemblies, d) at least one control and / or regulating device for controlling the at least one positioning device and / or the at least one joining device as a function of the method results, and e) at least one the at least one control and / or regulating device superordinate computer unit with at least one processor, at least one data memory and at least one central memory.

A construction site for carrying out the method has at least one positioning device for aligning the at least two subassemblies and at least one joining device for joining the subassemblies. In addition, measuring devices, such as laser trackers and / or photogrammetric measuring devices for automated measurement of the subassemblies to be joined together are provided. By means of the preferably fully automated measuring devices, a measurement of the subassemblies takes place in method step 5a). In addition, manually operated measuring devices can be provided in the construction site. All positioning devices, joining devices and the measuring devices are preferably controlled by at least one control and / or regulating device and operated fully automatically, wherein the control and / or regulating devices are controlled by the at least one higher-level computer unit. The higher-level computer unit is also responsible for the control of the process sequence according to the invention. The computer unit also contains at least one data memory and at least one central memory, which can be called up decentralized and, if necessary, also globally by each process user for controlling the production flow. The at least one data memory and the at least one central memory can be organized, for example in the form of a database, in such a way that a decentralized retrieval of the information contained therein is possible by specifying various search criteria. The superordinate computer unit can be formed with a central computer unit having at least one processor and / or by an interconnection of a plurality of less powerful central and / or decentralized computer units, which are interconnected via suitable information transmission channels. By means of suitable, connected to the higher-level computer unit data display devices, the current manufacturing status of each of sub-assemblies to be joined together component locally and / or globally visualize and control. As a result of the application of the method according to the invention, large-size subassemblies can be integrated in the construction site into finished components with the highest quality standards. Any inaccuracies recorded in the alignment and joining process, which can be caused for example by mass-caused deformations of the positioning devices and / or the subassemblies themselves, can be recognized by means of the method and can be compensated with lasting effect for later component generations. In addition, these inaccuracies, which show up in ongoing production and are compensated according to the method, can already be considered "a priori" during the design process of future generations of subassemblies to be prefabricated. As a result of a process according to the production process, among other things less massive, that is to say static, executed positioning devices can be used for the production process, whereby at the same time a significant increase in production quality can be achieved and, incidentally, a considerable cost saving potential can be established.

In the drawing shows:

1, 2 A related representation of the basic process sequence,

FIG. 3.4 shows two examples of a valuation carried out in method step 5d), and

Fig. 5 is a schematic representation of a construction site in which the process steps 5a-f) proceed. On the basis of the two FIGS. 1, 2, to which the flow chart has been split for the sake of clarity, the sequence of the method according to the invention for the feedback-based optimization of the measured data reading cycle in joining processes in production will first be explained in more detail. First, in a method step preceding method 0), a component design and a positioner design are created by means of known CAD systems. The component design includes, for example, geometry data of the subassemblies to be joined together to form a component, while the positioner design comprises, among other things, geometric data of the positioning devices used for the joining process in a building site. Accordingly, geometry data can also be fed from existing in the construction site joining devices. The resulting design specification is stored in a data store. The actual method starts in method step 1) with the analysis and the simulation of the production based on assumptions based on the design specification generated in method step 0), from which test characteristics, measured variables, tolerances and alignment parameters are derived, for example, those to be joined together Subassemblies that may relate to positioning devices in the construction site and the joining devices in the building site. The analysis and simulation of the variables mentioned can be carried out by suitable statistical methods, such as, for example, the so-called "Monte Carlo" method. The test features, measured variables, tolerances and alignment parameters resulting from method step 1) are stored in an unspecified memory step as an initial manufacturing and test concept in a data memory of a superordinate computer unit. In the following method step 2), the issuing and / or adaptation of a production and / or inspection order is derived from the initial production and / or inspection concept. The issued and / or the adapted manufacturing and / or test job is stored, for example, in a memory step in a central memory of the higher-level computer unit. In method step 3), the manufacturing and / or test order resulting from method step 2) after being stored in a central memory of the computer unit is subjected to a consistency check, that is to a plausibility check. If the consistency of the production and / or inspection order is not given, the process sequence is returned to method step 2) in a consistency query until the desired consistency is given. In the subsequent method step 4), the production and / or inspection order is exported and stored in a downstream memory step in a data memory of the computer unit. The subsequent process step 5) essentially takes place in one building. In a method step 5) subordinate process step 5a), a physical measurement of the subassemblies by means of known technical devices, such as a laser tracker and / or photogrammetric methods. The metrological measured variables resulting from method step 5a) are stored in the data memory of the computer unit in a subsequent memory step. At the step 5a) is followed by a storage step in which these measured metrological data are stored or cached in the data memory of the computer unit. In a method step 5b), an evaluation of the acquired metrological parameters takes place. The resulting measurement result is evaluated within the framework of a desired-actual comparison taking place in method step 5c). In addition, the alignment parameters and the measured variables from the production and / or test order stored in the data memory in method step 4) are taken into account in this target / actual comparison. From the setpoint / actual comparison carried out in method step 5c), a measurement deviation results. This measurement deviation is evaluated in a further method step 5d). Furthermore, tolerances of the manufacturing and / or test order stored in the data memory in method step 4) are included in this evaluation. From the evaluation of the measurement deviation taking place in method step 5d), manufacturing data results, which in turn are stored in a memory step in the data memory of the computer unit. In method step 5e), a plausibility check of the imported manufacturing data and the storage in a central memory of the computer unit takes place.

The process step 5d) is followed by a tolerance query, in which it is decided whether a tolerance fulfillment exists or whether a tolerance violation is given.

If the tolerance fulfillment after final alignment of the subassemblies is given, there is a stable joining process, which leads to the termination of the process. However, if the tolerance query results in a tolerance violation, an evaluation of the number of defined iterations takes place in method step 5g). The method step 5g) is followed by an iteration query. After passing through this iteration query, the process flow branches according to whether an increment n of the already passed iterations is less than or equal to a constant X, or if the increment n is greater than the constant X, where the constant X stands for a predetermined maximum number of process runs. If the increment n is smaller than or equal to the predetermined constant X, the method step 5g) is followed by the method step 5f), in which a (re) alignment of the subassemblies located in the construction site to create the finished component can take place. The spatial orientation of the subassemblies in the construction site can be automated, for example, by means of positioning units controlled by the computer unit. After the realignment of the subassemblies to be joined together in the construction site in method step 5f), the method sequence is continued again with method step 5a). However, if the increment n is greater than the predetermined constant X, the method run is aborted after passing through the iteration query and continued with a method step 6). In method step 6), an analysis and simulation of the production takes place on the basis of the real measurement results determined in method step 5b). The resulting corrected test features and measured variables as well as the optimized tolerances and alignment parameters are stored in an additional intermediate storage step as an optimized production and / or test concept in the data memory of the computer unit. This optimized production and / or test concept located in the data memory is then fed back to process step 2) by carrying out the creation and / or adaptation of a production and / or test order, wherein at the same time the process sequence is continued. The analysis and simulation of the production resulting from the process step 6) on the basis of the real measurement results is finally compared with a production history located in the central memory (see Fig. 1).

FIG. 3 shows a screen mask 1 of one of many possible results of the evaluation of a measurement deviation carried out in method step 5d) using the example of a fuselage section 2 (shown is the upper half of a section) with a floor frame 3 accommodated therein, the fuselage section 2 in turn is formed with at least two side shells, not shown, and also not shown upper shell.

Two semicircles 4, 5 shown by dash-dot lines delimit a tolerance interval 6 in which a cross-sectional contour of the fuselage section 2 is allowed to move in order, for example, to attach further fuselage sections, not shown, to the fuselage section 2 in a manner suitable for quality. A semicircle 7 shown by a dotted line reflects the ideal course (desired state) of a cross-sectional contour of the fuselage section 2 again. Another, drawn with a solid line curve 8 illustrates the actual course (actual state) of the cross-sectional contour of the fuselage section 2. It is clear from the screen of Fig. 2 can be seen that the actual state of the fuselage section 2 is within the predetermined tolerance interval 6 and thus satisfies the quality specifications. On the tolerance deviations with respect to the floor frame 3 is not discussed in this context. Furthermore, a coordinate system 9 is shown in the illustration of FIG. 2, whose x, y and z axes symbolize the three spatial directions. By definition, the x-axis runs parallel to the imaginary direction of flight of the fuselage section 2, while the y-axis extends transversely to the x-axis viewed in the direction of flight and the z-axis extends vertically upward from an imaginary ground.

FIG. 4 shows a partial aspect of the method using the example of an alignment of a fuselage section in relation to a further component, not shown, which is, for example, a fuselage section to be attached. In a fuselage section 10 two floor scaffolds 1 1, 12 are added. A curve 13 shown by a solid line symbolizes the ideal course, that is, a desired state of the contour of the fuselage section 10. A further curve 14 shown in dashed lines reflects the achieved actual state of the cross-sectional contour of the fuselage section 10 after an iteration passage, while a dotted Curve 15 represents the state of the fuselage section 10 after a second pass. It can clearly be seen that the fuselage section 10, after passing through the alignment step 5f twice only, has largely approximated the desired state of the cross-sectional geometry indicated by the solid line. In this state, the generally four, not shown individually in Fig. 4 shell segments with each other and with the floor scaffolds 1 1, 12 riveted to create the complete fuselage section 10 and / or be bolted, which in the building site, not shown, for example by means of fully automatic Riveting robot takes place. On the other hand, riveting can not yet take place after passing through the alignment step 5f) in the building site only once, because of the clearly visible dimensional deviations. Accordingly, the two iteration runs for the two floor scaffolds 1 1, 12 are each shown with a dotted and dashed line, not indicated by a reference numeral, while the corresponding one Target state is illustrated in each case by a horizontal line shown by a solid line.

A sufficient approximation to a predetermined desired state of the cross-sectional contour of the fuselage section 10 can be made clear for example in a screen mask for displaying further comparison results on a monitor by means of a red or green traffic light signal. A coordinate system 16 with an x-axis, a y-axis and a z-axis illustrates the position of the fuselage section 10 and the two floor scaffolds 1 1, 12 in space, wherein the zero point (origin of the coordinate system 16) in the common intersection of x- Axis, the y-axis and the z-axis.

FIG. 5 illustrates in a schematic side view an exemplary embodiment of a construction site for carrying out the method, in particular method steps 5a) to 5f). A construction site 17 configured as a preferably combined alignment and assembly site for producing a fuselage section 18 in a four-shell construction includes, inter alia, two side shell positioners 19, with which two side shells 21, 22 can be moved or aligned freely in space. The side shells 21, 22 are preferably automatically accommodated by the side shell positioners 19, 20 by means of connecting elements, not shown, and can be fixed in position thereon. A coordinate system 23 with an x-axis, a y-axis and a z-axis illustrates the position of all components of the building site 17 in three-dimensional space. The orientation of the three orthogonal axes of the coordinate system 23 corresponds to the alignment of the axes of the coordinate systems in FIGS. 3, 4. The Seitenschalenpositionierer 19,20 and with them the side shells 21, 22 are moved by means not shown actuators parallel to the axes of the coordinate system 23. In addition, the side dish positioners 19, 20 can optionally also be designed to be pivotable about at least one spatial axis of the coordinate system 23. A lower shell 24 is retracted and aligned by means of a Unterschalenpositionierers, for example in the form of an underfloor conveyor vehicle 25 in the building site 17. The lower shell 24 rests on a so-called pallet 26 on the underfloor transport vehicle 25. The underfloor transport vehicle 25 permits at least one positioning capability of the lower shell 24 parallel to the three axes of the coordinate system 23, but may optionally also be provided via at least one pivoting system. axle. Also, the lower shell 24 is automatically fixable on the pallet 26 by means not shown connection organs and optionally detachable again. Furthermore, the building site 17 has a presentation frame 27 for positioning and for driving in at least one floor scaffold 28 in the fuselage section 18. The equipment of the building site 17 is completed by an upper positioner 29 for aligning an upper shell 30. Both the presentation frame 27 and the upper shell positioner 29 allow at least one positioning of the upper shell 30 and the floor frame 28 parallel to each axis of the coordinate system 23. Both the Oberschalenpositionierer 29 and the Präsentierrahmen 27 have automatically operated connection organs, which automatically fixes the position fixing and optionally also a solution of the floor frame 28 and allow the upper shell 30. The side shells 21, 22, the lower shell 24, the floor scaffold 28, the upper shell 30 and the fuselage section 18 to be added or to be integrated therefrom constitute the substructure groups in the sense of the method sequence outlined in FIG.

The side dish positioners 19, 20, the top and bottom tray positioners 29, as well as the presentation frame 27 are positioning devices that allow for automated, virtually free alignment of the subassemblies to be mated in the building site in space. Furthermore, in the field of building site 17 in Fig. 5, not shown joining devices, such as rivet, bolt, gluing and / or welding machines, provided with automatic handling devices, such as standard articulated robots with multiple degrees of freedom and / or Portal robots, can be realized. In addition, not shown in the building site 17 measuring devices, such as laser trackers, photogrammetric devices and / or manually operated measuring devices provided to generate usually electronically directly evaluable and further processable measurements that are needed to carry out the process. All motion sequences of the two side shell positioners 19, 20 of the underfloor transport vehicle 25 with the lower shell 24 accommodated on the pallet 26 and the upper shell positioner 29 within the building site 17 are preferably controlled by at least one control and / or regulating device subordinate to the higher-level computer unit. In addition, on both sides of the upper shell 29 of the fuselage section 18, two work platforms, not shown, accessible and freely positionable in space working platforms can be provided. This workstation Men's manual intervention in the production process makes it easier to carry out manual reworking in a simple way.

The inventive method allows, in particular by the proposed feedback, a successive optimization of the manufacturing processes of large-sized components. Here, the method is not limited to the application in joining processes in the field of section assembly in aircraft, as schematically indicated in Fig. 5, limited. On the contrary, the widest variety of possible applications arise in the field of general mechanical engineering, in the field of vehicle construction, shipbuilding, special machine construction and in the manufacture of wind turbines.

LIST OF REFERENCE NUMBERS

1 screen mask

2 fuselage section

3 floor scaffolding

4 semicircle tolerance interval 5 semicircle!

6 tolerance interval

7 semicircle (target state)

8 Curve course (actual state)

9 coordinate system

10 fuselage section

1 1 floor scaffolding

12 floor scaffolding

13 Curve course (nominal state of cross section contour)

14 Curve course (1st pass actual state)

15 curve (2nd pass current state)

16 coordinate system

17 building site

18 fuselage section

19 side dish positioner

20 side dish positioner

21 side shell

22 side shell

23 coordinate system

24 lower shell

25 Underground conveyor vehicle

26 Pallung

27 presentation frame

28 floor scaffolding

29 Upper shell positioner

30 upper shell

Claims

claims

1. A method for the feedback-based optimization of a measured data life cycle in joining processes in manufacturing, in particular in the manufacture of aircraft and in general mechanical engineering, comprising the following method steps:

1) analysis and simulation of production on the basis of assumptions, in particular of manufacturing data, for the production of an initial production concept and / or test concept, 2) creation and / or adaptation of a production and / or test order,

3) Consistency check of the production and / or inspection order,

4) export and storage of the manufacturing and / or test order,

5) aligning and / or joining a component comprising at least two subassemblies in a building site (17),

6) analysis and simulation of production based on real measurement results and feedback of an optimized manufacturing and / or testing concept in the process step 2), and

7) at least one repetition of the process steps 2) to 6).

2. The method according to claim 1, characterized in that the manufacturing data include, among other test characteristics, measurements, tolerances and alignment parameters.

3. The method according to claim 1 or 2, characterized in that in a method step 5a) a measurement of the subassemblies and a storage of the metrological parameters obtained therefrom takes place.

4. The method according to claim 3, characterized in that carried out in a method step 5b) an evaluation of the method in step 5a) obtained metrological parameters.

5. The method according to claim 3 or 4, characterized in that in a method step 5c) a desired-actual comparison between alignment parameters as well as measured variables, which were stored in step 4) and the step 5b) determined measurement result for determining a measurement deviation takes place.

6. The method according to claim 5, characterized in that in step 5c) determined measurement error in a step 5d) for

Evaluation of the measurement error with the tolerances stored in step 4) is compared.

7. Method according to claim 6, characterized in that the evaluation of the measurement deviation ascertained in method step 5d) represents production data which are imported into a production history after passing through a plausibility check in a method step 5e).

8. The method according to claim 7, characterized in that it is checked in a tolerance query step, whether the tolerances are satisfied, the method is terminated in the case of a tolerance fulfillment and in the case of a tolerance violation with a method step 5g) for evaluating the number n of iterations continues ,

9. Method according to claim 8, characterized in that in an iteration query following the method step 5g) an evaluation of the increment n of the iterations already carried out takes place in such a way that the at least two subassemblies are reoriented in a method step 5f) and a Repetition of the method step 5a) follows, if the increment n is less than or equal to a constant X, or that the method is continued with the method step 6), if the increment n is greater than the constant X, wherein the constant X of a predetermined maximum number corresponds to the iterations to be traversed.

10. The method according to claim 9, characterized in that in the method step 6) an analysis and simulation of the production based on real measurement results is carried out, determined therefrom corrected test characteristics and measurements and / or optimized tolerances and alignment parameters the optimized production and / or test concept form, which is fed back to the production and / or adaptation of the production and / or the test order carried out in method step 2) for the continuous improvement of the production process.

1 1. The method according to any one of the claims 1 to 10, characterized in that between process step 6) and process step 2) the optimized manufacturing and / or test concept is stored in a storage step.

12. The method according to any one of claims 1 to 11, characterized in that in a method step 0) by means of at least one CAD system, a component design and / or a positioner design is created, preferably both designs are stored as a design specification ,

13. The method according to any one of claims 1 to 12, characterized in that in the method step 3) a consistency check is carried out, wherein in case of a detected inconsistency of the method step 2) is repeated.

14. The method according to any one of claims 1 to 13, characterized in that the at least two sub-assemblies, in particular at least two side shells (21, 22), at least one upper shell (30), at least one lower shell (24) and at least one floor scaffold (28) , in a building site (17) in each case by means of at least one positioning device in response to the tolerance query and by the method step 5g) are alignable and zusammenet by at least one joining device.

15. The method according to any one of claims 1 to 14, characterized in that the design specification from the process step 0), the manufacturing data determined in process step 1), the manufacturing and / or test orders resulting from process step 4), in the Process step 5a) measured metrological parameters, the manufacturing data obtained from method step 5d) and the resulting from step 6) optimized manufacturing and / or test concept are stored in each case a storage step in at least one data store and in step 2) generated manufacturing and / or test orders, the production history generated in method step 5e) and the analysis and simulation of production generated in method step 6) are stored in at least one central memory in a respective storage step based on real measurement results, wherein the at least one data memory and / or the at least one central sp eicher decentralized are available.

16. An apparatus, in particular for carrying out the method for the feedback-based optimization of a measured data life cycle, in particular in the manufacture of aircraft and in general mechanical engineering, according to at least one of the claims 1 to 15, comprising: a) at least one building site (17), b ) at least one positioning device for aligning the at least two subassemblies, c) at least one joining device for joining the at least two subassemblies, d) at least one control and / or regulating device for controlling the at least one positioning device and / or the at least one joining device in dependence on the Process results, and e) at least one of the at least one control and / or regulating device superordinate computer unit with at least one processor, at least one data memory and at least one central memory.

17. The device according to claim 16, characterized in that at least one subassembly in particular a side shell (21, 22), an upper shell (30), a lower shell (24) and / or a floor scaffold (28), wherein the to-tending Component has at least one further subassembly, in particular at least one further of said components having.

18. Device according to claim 16 or 17, characterized in that the at least one positioning device is in particular a side dish positioner (19, 20), a top plate positioner (29), a bottom plate positioner designed as an underfloor transport vehicle (25) or a presentation frame ( 27) is executed floor scaffold positioner.