Uniformity of a tire using tooling signature analysis
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsWilliam David Mawby, Jonathan Sauls, James Michael Traylor
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Abstract
Systems and methods for improving the uniformity of a tire by identifying the effects of tooling elements used during tire manufacture on tire uniformity, such as effects resulting from building drum elements, form elements, mold elements, and other tooling elements, are provided. More particularly, a tooling signature of a tooling element can be identified by analyzing a plurality of uniformity waveforms measured for a set of tires manufactured using the tooling element. The tooling signature can be analyzed and used to modify tire manufacture to improve the uniformity of a tire.
Claims15
A method for improving the uniformity of a tire, comprising:
- measuring a plurality of uniformity waveforms, each uniformity waveform measured for a tire in a set of a plurality of tires;
- modeling each uniformity waveform of the plurality of uniformity waveforms as a sum of one or more tooling element terms and one or more non-tooling element terms, the one or more tooling element terms associated with a tooling element used in tire manufacture, the one or more non-tooling element terms associated with tire and process harmonics;
- identifying a tooling signature for the tooling element used in tire manufacture, the tooling signature based, at least in part, on the one or more tooling element terms;
- and
- modifying manufacture of one or more tires based on the identified tooling signature,
- wherein the tooling signature is comprised of data representative of a tooling effect on a uniformity parameter for a plurality of data points about a circumference of the tooling element, and
- wherein the tooling signature is comprised of data representative of a point-by-point estimation of a physical shape of the tooling element.
Dependencies are inferred from the claim text.