Browsing by Author "Oliaei, S. N."

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    Design and fabrication of micro cutting tools using micro electro discharge machining (µ-EDM)
    (2012-06) Ergür, Ali Can; Oliaei, S. N.; Karpat, Yiğit
    With the advent of sophisticated electro discharge machines, design and fabrication of micro cutting tools and their employment in micro machining operations have become a popular research area. These machines have been used to fabricate micro milling, drilling, and grinding tools made from tungsten carbide and polycrystalline diamond with diameters as low as 5-10 micrometers. Successful fabrication and application of micro tools require a great deal of process knowledge. In this study, a methodology based on analytical and computational process models is proposed and some preliminary results are presented.
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    Multi-scale milling force modeling through a finite element simulation based metamodel
    (2012-06) Oliaei, S. N.; Karpat, Yiğit
    In this study, a milling force model based on finite element simulation of orthogonal cutting process has been proposed. Design of computer experiments approach is used to obtain a metamodel based on finite element simulation results of machining titanium alloy Ti6AL4V. The metamodel is integrated into an analytical milling force model including tool runout effect to calculate milling forces at micro and macro scales. The proposed model yields results that are in good agreement with measured milling forces.