Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Development of a CAD/CAM process chain for the production of bent sheet metal parts

Datum: 13.12.1991



  • Prof. Dr.-Ing. M. Geiger
  • Prof. Dr.-Ing. H.K. Tönshoff, Universität Hannover

The sheet metal processing equipment of the chair for manufacturing technology allows for flexible production of complex bent sheet metal parts in small production runs. In this work a CAP-system was developed to support preproduction engineering and thus enhance the efficiency of the machine. This system is stands out due to its high degree of automation. The basis for this was the design of an integrated data model, tailored for the needs of preproduction engineering of sheet metal processing. The development of fast and efficient algorithms was made possible by constructing a feature oriented data model which represents sheet metal parts as shell parts and implementation of an attribute management system, that can process tolerance information. The automated processing of technological and expert knowledge was a main aspect of the development of the CAD/NC process chains. This not only makes the work of the designer easier, but also improves manufacturing quality and safety. The design and development of intelligent modules for the process chains, the technology processor for laser beam cutting and the automatic planning of bending states are described in detail. The integration of technological data and data of the manufacturing processes with the necessary interfaces to data bases and designer are addressed in particular.