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A new method to improve the surface quality during CNC machining

This paper investigates an active method towards net quality milling. The overlap between subsequent passes is studied. The significance of the effect of overlap values on milling performance is shown. A new NC-code is proposed that controls and implements an optimum phase between passes and that satisfies net quality in milling. Mathematical models were developed for the cutting geometry, surface roughness, chip thickness and cutting force. Experimental results and a case study show the validity and adequacy of the path modification scheme.