Comparison of Tool Feed Influence in CNC Polishing with Several Pseudo-random Paths

Abstract

A novel pseudo-random path without any corners was created, in order to remove repetitive patterns on polished surface and to improve surface roughness under a high feed of polishing tool. In this tool path, deceleration of the tool feeds was 30% smaller than previous pseudo-random paths. In a polishing experiment, peak amplitude of FFT analysis on polished surface with the new path was almost half compared with a raster path. Furthermore, surface roughness of polished surface did not deteriorate even though the tool feed became faster. Finally, the applicability of this method to non-planar surfaces is also investigated.