Research on Side Milling Tool-Path Planning on Ruled Surface Blade Annular Cutter

As for the side milling for non developable ruled surface blade,usually the range between cutter’s envelope surface and designed surface is transformed into the range between designed surface’s equidistant surface and the tool axis trajectory surface,and then optimization method is used on tool axis trajectory surface to make it close to the design surface ultimately.This cylindrical cutter-path planning idea is prone to cutter interference.Based on this method,side milling cutter-path optimization is used for ruled surface blade by annular cutter in this paper.The programming error of cutting path of annular cutter is analyzed,the initial cutting path of the annular cutter is determined by means of the 3-point off-set optimization method,and then the vector of the optimal cutter axis is determined through the dynamic point paranoid,thus optimization method of cutting path is generated.This method can also be applied to the segmented side milling,and finally the global optimization of cutting placing is realized.