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Working gap analysis in electrochemical precision machining of external geometries with ring cathodes

 
: Schaarschmidt, I.; Hackert-Oschätzchen, M.; Meichsner, G.; Steinert, P.; Zinecker, M.; Schubert, A.

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Volltext ()

Procedia CIRP 95 (2020), S.662-667
ISSN: 2212-8271
Conference on Electro Physical and Chemical Machining <20, 2021, Online>
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWU ()

Abstract
Pulsed electrochemical machining (PECM) with oscillating cathode is a non-conventional manufacturing technology to machine complex precision geometries independent from the mechanical properties of the workpiece material. PECM with oscillating cathode is an advanced development of conventional ECM by applying a pulsed electric current in conjunction with an oscillating movement of the cathode. Result is electrochemical precision machining with a more stable process combined with better accuracy and quality. This work focuses on the analysis of the resulting side working gap in electrochemical precision machining of external geometries by applying PECM. Therefore, the height of a ring cathode was varied to adjust the cathode inner surface. The resulting side working gap was studied through multiscale multiphysics simulation applying COMSOL Multiphysics as well as experiments applying a PEMCenter 8000. As main result, the increase of the resulting side working gap as consequence of an increasing cathode inner surface will be analysed in detail.

: http://publica.fraunhofer.de/dokumente/N-639542.html