Method for Model-driven Design of Deep Drawing Tools
Final Report Abstract
As part of this research project, a graphical domain-specific modelling language (GDSL) was developed and prototypically implemented in order to significantly simplify the mapping of product logic in the parametric design of forming tools. Based on the results of the first project phase, the GDSL was extended to address the increasing complexity of tool and component geometries as well as the requirements of different forming processes. The method allows tools and workpieces to be modelled and related to each other - including intermediate and preform geometries. The central innovation is the separation of geometry and parametrics. Thanks to a structured visual language, designers can adapt tools to defined component requirements without indepth expert knowledge. This shortens development times, reduces training costs and enables a faster response to customer requirements. This was supported by a dual-hierarchical visualisation approach that graphically depicts tool and workpiece models as tree structures. Relationships such as geometric dependencies or functional couplings are visualised interactively. The GDSL was iteratively expanded to also map multi-stage forming processes. This was demonstrated using the sheet metal forming process, in which a gear wheel is created from a sheet metal blank in several steps (deep drawing, upsetting, punching). The CAD design is based on parametric components in Catia V5; modelling data was transferred to SysML structures. One focus was on the integration of requirements using requirements engineering methods. These make it possible to link functional requirements directly with tool parameters - an important extension for ensuring traceability. The GDSL was supplemented by a metamodel that systematically classifies parameters, relationships and constraints and transfers them into a layout. A classification scheme for the concrete syntax of graph-like modelling languages (GLML) was developed and compared with existing layout methods. The GDSL is modular, interactive and extendable and can be transferred to other application areas of systems engineering. The results were presented in specialist publications and at conferences with a highly positive response. In particular, the structured decoupling of parametric logic and geometric modelling opens up new possibilities in digital design. The approaches developed in the project contribute to improving collaboration, reaction speed and quality in digital product development - aspects that were identified as key challenges in a company survey.
Link to the final report
https://doi.org/10.34657/23980
Publications
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Classification and mapping of layout algorithms for usage in graph-like modeling languages. Proceedings of the 25th International Conference on Model Driven Engineering Languages and Systems: Companion Proceedings, 728-736. ACM.
Wrobel, Gregor & Scheffler, Robert
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Classification Scheme for the Concrete Syntax of Graph-like Modeling Languages for Layout Algorithm Reuse. Proceedings of the 10th International Conference on Model-Driven Engineering and Software Development, 344-351. SCITEPRESS - Science and Technology Publications.
Wrobel, Gregor & Scheffler, Robert
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Classification for the Concrete Syntax of Graph-Like Modeling Languages. SN Computer Science, 4(2).
Wrobel, Gregor & Scheffler, Robert
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Investigation of the Process Limits for the Design of a Parameter-Based CAD Forming Tool Model. Lecture Notes in Production Engineering, 297-306. Springer International Publishing.
Wehmeyer, J.; Scheffler, R.; Enseleit, R.; Kirschbaum, S.; Pfeffer, C.; Hübner, S. & Behrens, B. -A.
