Feedback Compensation of Tool Deflection in a High Speed AMB Machining Spindle

This paper describes a method for compensation of tool tip deflection in a high-speed, magnetically levitated, machining spindle. The proposed method utilizes measurements from the AMB sensors to estimate forces and calculate the resulting tool deflections. The deflections are then compensated online with a feedback signal that changes the loaded tool tip’s position. The modeled results show significant performance improvements, which are experimentally validated.