Enhancing Accuracy and Productivity of Super Precision Turning Machining Centers

Abstract

Modern super precision tuning centers have to provide accuracy in lower range of diamond turning machines (cylindricity under 1-2 micron) and high productivity, that diamond turning machines are not able to delivery because of their design limitations. High accuracy may be achieved if compensation of error will be compute based at feedback from results of part dimensions and profile measurement. At this moment are known systems that provide dimensional and sometimes profile feedback by results of measurement performed outside of cutting envelope of a turning center (lathe). For super precision turning centers with relative short duty cycles this approach is not effective. Super precision of turning center allows using it guide ways system as support for measuring device and perform in envelope measurement of part profile and dimensions. Information obtained during this measurement is used for compensation of errors that are correlated to variation in cutting force as function of tool wear and variation of parts material characteristics in the batch.