Study and Experiment of Smart Robotic Drilling for Laminated Composites and Titanium Alloy

摘要

A smart drilling robot for the difficult-to-cut and laminated composites (CFRP) and titanium alloy (Ti) of the aerofoil and fuselage skin is introduced in this paper. The smart robot can change drilling tools mounted on the spindle quickly, to which ultrasonic vibration drilling technology is applied. A load control method with real-time feedback and adjustment of the drilling parameters based on Simulink is used in the smart drilling robot to implement precisely and continuous drilling. Besides, the perpendicularity of the hole is assured automatically depending on the drilling template and sleeve. Instead of drilling composites and titanium alloy respectively and making them concentric afterwards, one-time drilling together greatly improves the efficiency and accuracy. Illustrative experimental results and analysis on the robot platform mentioned above are verified to prove that the smart drilling robot is attainable in terms of the high accuracy and efficiency.