Study of Predicted Technology on Surface Roughness in Virtual Numerical Control Milling

The critical influence factors of surface roughness were analyzed in Numerical Control (NC) milling and mathematic model about surface roughness on influence factors was established by multiple regression, which has an ability of high prediction and strong generalization by significance test. This model provides technical support for surface roughness prediction model in virtual NC milling. A simulation system was developed based on DELPHI, which has an ability of interactive and visualization, and can predict surface roughness of virtual NC milling machine tool online. It helps to correctly understand the rule that surface roughness changes with milling parameters, and provides theoretical basis for optimizing milling parameters.