Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Development of a transferable method for the Three-Roll-Push Bending

Datum: 29.11.2017



  • Prof. Dr.-Ing. habil. M. Merklein
  • Prof. Dr.-Ing. habil. K. Willner

The complex bent tube components are due to required process flexibility increasingly and with preference formed by kinematical freeform tube bending processes. However the lack of process understanding makes the freeform tube bending inaccurate and too slow for the industrial application. Thus, the methodology developed in this work importantly contributes to the implementation of a general valid process design strategy for the industrial realization of a freeform bending based on the roll-push-bending processes. For the time-efficient and accurate determination of the process parameters an innovative numerical model was presented, whereat and considering the bending result the modelling of the machine´s structure plays a particularly important role. Therefore, to ensure a high calculation accuracy, the elastic deformations of the machine´s structure were particular precise examined and implemented in the model. Finally, the model was optimized and validated by experimentally obtained data.