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Influence of the anode material on the breakdown behavior in dry electrical eischarge machining
(2012)Procedia CIRP ~ Fifth CIRP Conference on High Performance Cutting 2012In the last years dry electrical discharge machining (DEDM) has been proposed as an alternative to the traditional EDM. The main reason for these efforts is the absence of a liquid dielectric which results in a simpler and environmentally friendly machine. This paper presents measurements of the material removal rate in function of different tool electrode and work piece material put in relation with the breakdown behavior of the process ...Conference Paper -
Applying Wire Electrical Discharge Dressing (WEDD) to Improve Grinding Performance of Metal Bounded Diamond Wheels
(2012)Procedia CIRP ~ Fifth CIRP Conference on High Performance Cutting 2012In order to improve grinding performance of metal-bonded diamond wheels, a proper conditioning method has to be used. In this work, wire electrical discharge dressing (WEDD) is evaluated. With a self-designed WEDD-device the dressing process can be carried out inside a grinding machine, reducing non-productive time. Moreover, the in-process WED-dressing was assessed, showing potential for future applications. Dressing experiments indicated ...Conference Paper -
Die-sink EDM in meso-micro machining
(2012)Procedia CIRP ~ Fifth CIRP Conference on High Performance Cutting 2012Micro EDM has been identified since more than a decade as suitable process for machining complex shaped structures with high aspect ratio, though only through variations of EDM such as micro EDM milling, micro EDM drilling, coated electrodes etc. In the current paper, we present the research focused on analysing the capability for implementation of die-sink EDM in meso - micro scale machining (structures with surface area smaller than ...Conference Paper -
Effective Dynamometer for Measuring High Dynamic Process Force Signals in Micro Machining Operations
(2012)Procedia CIRP ~ Fifth CIRP Conference on High Performance Cutting 2012The authors present an innovative piezoelectric dynamometer (MicroDyn) providing the base for measuring high frequency signals in micro machining operations. Cutting tools with one or more cutting edges used in micro machining processes are mostly running with rotational speeds of more than 100’000 rpm, resulting in high excitation frequency. Thus, the interference of the excitation frequency of those processes with the natural frequency ...Conference Paper -
Modeling and simulation of electrical discharge machining
(2012)Procedia CIRP ~ 1st CIRP Global Web Conference: Interdisciplinary Research in Production Engineering (CIRPE 2012)Electrical discharge machining involves complex physical processes occurring simultaneously, which lead to the removal of material from both electrodes. During the discharge, material melts, evaporates and is ejected when the plasma channel collapses. Modeling the erosion process can help to better interpret and predict results, which are otherwise difficult to understand. In this work, the material removal rate is predicted based on the ...Conference Paper