The invention discloses a rotary part on-
machine precise and quick alignment device and method, and belongs to the technical field of precision / ultra-precision
machining. The rotary part on-
machine precise and quick alignment device comprises a main controller, a high-precision displacement detection device and a micro-nano displacement adjusting device. The rotary part on-
machine precise and quick alignment method comprises the steps that firstly, the high-precision displacement detection device is controlled by the main controller to conduct
data acquisition on the excircle runout of a part,acquired data are subjected to low-pass filtering treatment and then least square fitting treatment is conducted; then the
maximum deviation of the part and the corresponding deviation angle are calculated, a
machine tool main shaft is controlled by the main controller to rotate to be located at the appointed angle, the micro-nano displacement adjusting device is adopted to adjust the displacement of the part within the nanometer-grade to micron-grade range, and then the excircle of the part is detected after adjustment is accomplished; and finally, the adjusting process is repeated until theexcircle runout of the rotary part meets the precision / ultra-precision
machining requirement. The rotary part on-machine precise and quick alignment device and method have the advantages of being high in precision, being capable of achieving the submicron grade and even the nanometer grade, being convenient and fast to adjust, high in
repeatability of the adjustment accuracy and low in dependenceof the technology of an operator, and easily achieving the
automation.