Patent ID: 9120280
Filing Date: 2015-09-01
Classification: B29D,G01M

Abstract:
1. A method for improving the uniformity of tires in tire manufacture, comprising: providing a set of test tires manufactured in a known order; identifying at least one candidate cyclic process effect and a corresponding rate of introduction of the at least one candidate cyclic process effect, the at least one candidate cyclic process effect having a period that does not fit an integer number of times within a tire circumference associated with the set of test tires; measuring a given uniformity parameter for each tire in the set of test tires, wherein the measured uniformity parameter contains one or more tire harmonics and process harmonics; concatenating measured data points for the set of test tires into a concatenated composite waveform; separating at least one process harmonic associated with each of the at least one candidate cyclic process effects from the tire harmonics in the concatenated composite waveform; and building a new tire to improve uniformity based on knowledge of each separated process harmonic.