Method For Precisely Measuring Position Of A Part To Be Inspected At A Part Inspection Station

A method for precisely measuring position of a part to be inspected at a part inspection station, the method comprising:

• positioning a part having a part axis relative to a measurement axis at the part inspection station;
• scanning the positioned part with an array of planes of radiation so that the part occludes each of the planes of radiation over a measurement interval of the part to create a corresponding array of unobstructed planar portions of the planes of radiation wherein each of the unobstructed planar portions contains an amount of radiation which is representative of a respective geometric dimension of the part;
• measuring the amount of radiation present in each of the unobstructed planar portions to obtain measurement signals;
• and
• processing the measurement signals to obtain a measure of distance between the axes at the measurement interval.

A method for precisely measuring position of a part to be inspected at a part inspection station, the method comprising:

• positioning a part having a part axis relative to a measurement axis at the part inspection station;
• scanning the positioned part with an array of planes of radiation so that the part occludes each of the planes of radiation over a measurement interval of the part to create a corresponding array of unobstructed planar portions of the planes of radiation wherein each of the unobstructed planar portions contains an amount of radiation which is representative of a respective geometric dimension of the part;
• measuring the amount of radiation present in each of the unobstructed planar portions to obtain measurement signals;
• and
• processing the measurement signals to obtain a measure of angle between the axes at the measurement interval.