Fine alignment of blade profile measurement data considering probe radius

On-machine measurement plays a key role in adaptive machining technology, providing real-time information on machining parameters and material state. Aiming at the compensation error that will be introduced after the radius compensation of the on-machine probe, this paper suggests a method of blade profile measurement data alignment considering the probe radius by improving the objective function of the nearest-point iteration algorithm based on the mean square deviation of the distance from the corresponding point. The reliability of the method is verified through simulation and real data alignment experiments, which provides an effective way to improve the alignment accuracy.