Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Concept to control the process fluctuations in the press shop

Datum: 16.12.2013


  • Dr.-Ing. Anja Neumann


  • Prof. Dr.-Ing. habil. M. Merklein
  • Prof. Dr. P. Hora

The increasing complexity of design, crashand weight requirements of body parts inthe automotive industry lead to smaller processwindows which guarantee producedparts of good quality. As a result, minimalfluctuations of the influencing parameterslead to failure of the parts. The aim of thestudy was the development of a conceptwhich enables an automatically reaction onthe fluctuations of the process parameters ofthe deep drawing operation in the pressshop in order to get best quality parts. Forthis purpose, appropriate measurementtechniques were identified and further qualifiedto record the significant influencingparameters in series production. Based onthe system that was developed for seriesproduction and subsequently integratedmetrological, the influencing parameters ofeach stroke could be recorded over numerouspressing jobs of the series part and thusanalyzed. This approach allowed a study ofthe cause-effect correlation of the timedependentinfluencing parameters and thedefinition of potential control and actuatingvariables of the process for the realizationof an automatic control loop.