Investigation of fill factor and tool path effects on micro-EDM milling

Abstract

In this paper, the influence of tool path variation on micro-EDM milling performance of square micro-cavities havingthree different fill factors (FF, ratio between electrode toolsection area and feature section area) is presented. Threecavities for each considered FF have been machined and theexperimental results have been evaluated in terms of materialremoval rate (MRR) and tool wear ratio (TWR). The analysisshow that the machining of the cavity with medium FF displaysa MRR which is unexpectedly smaller than the onemeasured for the smallest cavity. The reason of such resultshas been investigated by analyzing the influence of tool pathon working conditions. Hence, a new set of micro-cavities hasbeen machined varying the path lengths. The new resultsconfirmed that, in dependence on the FF and cavity depth(expressed in terms of aspect ratio, AR), the proper setting ofthe tool path lengths can significantly improve the machiningperformance, in particular, in terms of MRR.


Tutti gli autori

  • V. Marrocco; F. Modica ; I. Fassi

Titolo volume/Rivista

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Anno di pubblicazione

2013

ISSN

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ISBN

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Numero di citazioni Wos

Nessuna citazione

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Settori ERC

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Codici ASJC

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