Material Identification in Helical Milling for Smart Drilling Applications

Abstract

Hole making on stacked aerospace materials is a major operation during aircraft assembly which poses significant challenges during manufacturing because of different material machinability. Most common problems include poor hole quality and low productivity as single tool and same cutting parameter is used for both material layers. Strategies involving smart machining including adapting proper cutting conditions by real time data monitoring can have significant improvements. Data map of specific coefficients is developed for material identification during orbital drilling of stacked Aluminium and Titanium alloys by monitoring machine spindle power, spindle and cutting flute position . Our result shows the applicability of data map technique consisting of axial cutting coefficients K ab for material identification in orbital drilling by monitoring machine spindle power and spindle position.