Modeling of Surface Generation with Cutting Strategy Effect in Ultraprecision Raster Milling

This chapter studies the effect of cutting strategy on surface generation and machining time in ultraprecision raster milling (UPRM) to build a holistic three-dimensional (3D) surface roughness prediction model. The established surface roughness prediction model adds two new factors (the shift length and tool-interference) on surface generation and therefore not only takes into account the influences of cutting parameters, geometries of cutting tool, but also considers the effects of tool path generation (TPG), workpiece size, and the machine characteristics. The calculation methodology for the tool-interference in UPRM and evaluation models for shift length and machining time are also proposed in this chapter. A series of cutting experiments has been conducted to verify the proposed surface generation model. The experimental results agree well with the predicted results from the model.