Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Bending Using Elastomere Tools ?- Modelling, Process Design and Distinguishment by the Example of Tube Bending



Datum: 15.04.2005


Author


Reporter

  • Prof. Dr.-Ing. Dr.-Ing. E.h. mult. Dr.h.c. M. Geiger
  • Prof. Dr.-Ing. M. Kleiner, Universität Dortmund

Decreasing product cycle times as well as more and more individual prospects on products make modern manufacturing technologies necessary which enable an efficient and flexible production of parts. A group of technologies fulfilling these demands is ?forming using an elastomere tool?. For an amelioration of the industrial applicability of these technologies the producible parts spectrum has to be enlarged. An enlargement of the spectrum on workpieces which not only have a plane contact zone with the elastomere tool is possible by using flat elastomere pads. These pads are able to adapt themselves to the contour of the workpiece. This work shows, exemplarily for bending of tubes using an elastomere pad, strategies for a virtual process design as well as for an online process control. For a virtual process design by using finite element simulation, suitable methods for the characterisation, for the choice of a material model and the modelling of the process are presented. Within the scope of a process control a foil measurement system has been realised. By using this system contact stresses between elastomere tool and workpiece can be detected and monitored. The potential of the technology of bending using an elastomere tool is shown on the basis of the resulting properties of the produced parts.