Geometric Simulation Of Cutting Surface Roughness Of Metal Parts

Metal cutting process is very important in mechanical manufacturing, it is imperative for enterprises to improve the machining efficiency and cutting quality. Surface roughness is one of the most important indicators of the quality of the machined surface, it rely mainly on trial and experience to select the tool and to determine cutting parameters, this will have great limitations. The surface roughness formation can be broadly broken down into key areas.(1) The unstable factors during the cutting process. Mainly includes the boundary of the cutting tool wear, the relative position between tool and workpiece, etc.(2) Geometric factors of roughness, it mainly depends on the scallop-height.Through geometric simulation, analysising geometric factors on the machined surface roughness. Using Matlab software to analyze the effects of rake angle, corner radius, tool wear, feed rate on surface roughness, it provides an important reference for selecting tools and determining the optimum cutting parameters. According to the cutting tool path and the simulation of tools movement, using VB and AutoLisp software to design program, users only need to load the program, enter the corresponding basic parameters, can get the three-dimensional products and surface roughness. Due to the simulation processing results and the actual processing results are approximate, so it can provide theory basis for selecting tool geometry during the actual processing. Through simulation processing and performance analysis, can omit the cutting process, economize the trial cost and decrease the trial time. At the same time, it can be more intuitive control surface roughness and improve the quality of the surface.