A new method to improve the surface quality during CNC machining

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