Uniformity correction by ablation at different track locations along a tire bead
First Claim
1. A uniformity correction system for reducing a magnitude of multiple harmonics of at least one uniformity parameter in a cured tire, said system comprising:
- a tire fixture on which a tire is securely mounted for selective rotation;
an ablation device oriented relative to said tire fixture for providing ablation of the tire mounted on said tire fixture; and
a computer control system coupled to said ablation device and said tire fixture for selectively controlling the ablation device such that tire material is selectively removed along at least one tire bead mounted on said tire in accordance with a plurality of calculated ablation patterns that are programmed into said computer control system, wherein said ablation patterns are calculated to correct for a selected number of harmonics for each of the at least one uniformity parameter in the cured tire, each pattern in the plurality of ablation patterns being designed for ablation at one of a plurality of different track locations defined along the profile of the at least one tire bead in two or more of a bead seat, a low flange zone and a high flange zone.
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Accused Products
Abstract
A system and method for reducing the magnitude of one or more harmonica of one or more uniformity parameters in a cured tire involves selective removal of tire material at one or more track/area locations along first and second bead profiles. Selective removal may occur via ablation at the bead seat, low flange and/or high flange zones to correct for a selected number of harmonic of such parameters as radial, lateral and tangential force variation. Ablation pattern are calculated and implemented on first and second tire beads to achieve desired levels of force reduction at selected angular locations (within the expanse from 0-360 degrees along each tire bead). Ablation patterns may be calculated for implementation at fixed or varied tire rotational speeds and/or fixed or varied levels of laser power.
20 Citations
8 Claims
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1. A uniformity correction system for reducing a magnitude of multiple harmonics of at least one uniformity parameter in a cured tire, said system comprising:
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a tire fixture on which a tire is securely mounted for selective rotation; an ablation device oriented relative to said tire fixture for providing ablation of the tire mounted on said tire fixture; and a computer control system coupled to said ablation device and said tire fixture for selectively controlling the ablation device such that tire material is selectively removed along at least one tire bead mounted on said tire in accordance with a plurality of calculated ablation patterns that are programmed into said computer control system, wherein said ablation patterns are calculated to correct for a selected number of harmonics for each of the at least one uniformity parameter in the cured tire, each pattern in the plurality of ablation patterns being designed for ablation at one of a plurality of different track locations defined along the profile of the at least one tire bead in two or more of a bead seat, a low flange zone and a high flange zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification