Development of Micro-EDM Incorporating In-situ Measurement System

AbstractA prototype micro electrical discharge machine (micro-EDM) is developed with a piezoactuated tool feed system. During machining, tool feed controller receives the tool-work gap voltage as a feedback signal for controlling the tool feed. An in-situ measurement system based on electrical contact sensing is incorporated in the setup. During tool wear and blind hole depth measurement, tool positioning is achieved by contact sensing and tool displacement is obtained by a laser optical measurement system. From the machining experiments carried out it can be concluded that the developed micro-EDM system is suitable for experimental studies on various micro-EDM processes parameters