Investigations on femtosecond laser-modified microgroove-textured cemented carbide YT15 turning tool with promotion in cutting performance

This work puts forward femtosecond laser modification of microgroove textures on a rake face of the cemented carbide YT15 turning tool in order to promote its cutting performance. Technological tests focusing on femtosecond laser ablation of YT15 are established with purpose of obtaining the impacts of machining parameters, like pulse energy, scanning velocity, and scanning times on the morphology of microgrooves, mechanism of which are analyzed from multiple aspects. Cylindrical turning tests and numerical simulations by ABAQUS based on orthogonal cutting model and Johnson-Cook (J-C) constitutive model are carried out to investigate the variation of cutting performance applying non-textured (NT), parallel grooves textured (PGT), and vertical grooves textured (VGT) turning tools. Matlab is utilized to filter the force signal collected by a three-dimensional piezoelectric dynamometer. Both theoretical and experimental results demonstrate that parallel grooves with specific dimension parameters on a rake face of a turning tool can improve cutting performance more significantly with less tool wear.