Effect of PVC coated tool on tool geometry and drilling hole dimension

Effect of PVC coated tool on tool geometry and drilling hole dimension

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This Book presents an innovative method for the electrical discharge drilling of micro holes. It makes use of tools insulated on the sidewall by means of a coating. The concept is to promote the process stability of micro EDM deep drilling by preventing secondary sparks. The performance of standard and customized tools is compared and reviewed against the main criteria of shape quality and tool wear. Process capabilities are also defined for a given coating.In micro electrical discharge machining (micro EDM), side-insulation of tool electrode can significantly improve the machining accuracy, e...