Research on Geometrical Modeling and Simulation for Ultraprecision Machining Surface Micro-Topography

The tool sharpness can influence material removal and surface finish through the minimum thickness of cut in ultraprecision turning. A surface micro-topography simulation program is developed,in which the effects of tool geometry,machine tool vibration and minimum thickness of cut on surface micro-topography are considered,a random motion signal is incorporating into the theoretical analysis of surface generation. A new surface roughness model based on cutting geometry for diamond turning with a round nose tool is proposed. The results show that the surface micro-topography simulation program can properly simulate the surface profile generated in ultraprecision turning operations.