Development of a process signature for electrical discharge machining |
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| Affiliation: | 1. Laboratory for Machine Tools and Production Engineering (WZL), RWTH Aachen University, Germany;2. Fraunhofer Institute for Production Technology (IPT), Aachen, Germany;1. Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, China, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China;2. Center for Precision Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China;3. College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China;1. Institute of Machining Technology, TU Dortmund University, Baroper Str. 303, Dortmund 44227, Germany;2. Institute of Materials Engineering, TU Dortmund University, Leonhard-Euler-Str. 2, Dortmund 44227, Germany;1. Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH, USA;2. Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA |
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| Abstract: | Electrical discharge machining (EDM) is a versatile unconventional machining process allowing high precision manufacturing. Due to the thermal main active principle, the process-induced heat affected rim zone always needs to be particularly considered regarding its characteristics as the resulting surface integrity has to fulfill the needed functional properties for advanced applications. Today, no deterministic model is available especially for the residual stress prediction. As consequence, current process design is based on experience and heuristic optimization. The paper therefore mechanistically links the material modification and the process-induced load. Inversion of the according process signature component finally allows model-based process design. |
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