Simulation Study on Surface Topography and Roughness in Milling Process of Curved Die

Abstract

Surface texture features such as surface morphology and surface roughness control the corrosion resistance and fatigue resistance of parts. Due to the complex structure of tool and workpiece in milling process, the traditional experimental method is not suitable. Based on the cutting edge line model, the tool trajectory model and the point cloud model of the convex surface workpiece, the simulation model of the surface topography and surface roughness of the convex surface hardened steel mold milling process was established, and the simulation of the surface topography and roughness was realized by combining with the Z-map simulation algorithm. The correctness of the model is proved by the confirmatory experiment. Based on Taguchi method and gray relation analysis method, the sensitivity of surface roughness to machining inclination and cutting parameters is analyzed. It is concluded that the spindle speed has the greatest influence on the roughness and the roll angle has the least influence. The research results provide a theoretical basis for the optimization of cutting parameters in the machining process.