Micro-texture trajectory dependent pressure distribution of CVD diamond thick film cutting tools during turning of Ti-6Al-4V

摘要

To counteract the high thermomechanical load during turning Ti-6Al-4V, an advancement of tool geometries is necessary. Based on simulative and empirical analysis, the present study investigates the process behaviour of micro-textured CVD diamond cutting tools. Different micro-texture trajectories determine influence of the microstructure on the stress levels, pressure distributions and adhesive wear. Compared to non-textured cutting tools, a cutting force reduction of 12.8 % determined empirically and 19.5 % determined simulatively with simultaneous displacement of the principal stress results using micro-textures. Based on simulatively calculated process forces and pressure distributions an evaluation of tool stability and adhesion tendency is possible.