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Tire manufacturing method for improving the uniformity of a tire

A uniformity and tire technology, applied in tires, household appliances, other household appliances, etc., can solve problems such as severe vehicle vibration

Inactive Publication Date: 2008-10-15
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the vehicle vibrations caused by the tires may be worse than without optimization

Method used

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  • Tire manufacturing method for improving the uniformity of a tire
  • Tire manufacturing method for improving the uniformity of a tire
  • Tire manufacturing method for improving the uniformity of a tire

Examples

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Embodiment Construction

[0020] Reference will now be made in detail to typical modes of the invention, which are one or more of the modes shown in the drawings. Each example described is an explanation of the invention, but does not mean that the invention is limited thereto. Throughout this specification, features illustrated or described in one introduction may be used in other descriptions. Common features explained in whole or in part are denoted by like reference numerals in the figures.

[0021] Modern pneumatic tires are usually manufactured with great care and accuracy. The goal of the tire designer is to produce a tire free of circumferential and tangential non-uniformity. However, despite the best intentions of the designer, since the tire production process involves many steps, these steps can lead to various non-uniformities. One obvious non-uniformity is that the tire may not be perfectly round (radial run-out or RRO). Another form of non-uniformity is radial force fluctuation (RFV)....

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Abstract

A tire manufacturing method includes a method for optimizing the uniformity of a tire by reducing the green tire radial runout. The green tire radial runout is modeled as a vector sum of each of the vectors representing contributions arising from the tire building steps. A set of vector coefficients is generated from the vector equation. The building steps include building the tire carcass, building the tire summit, transferring the summit onto the inflate carcass, and measuring the radial runout and tooling angles at each step in the process. After the model is built the vector equations and coefficients are applied to subsequent tires. By adjusting the tooling angles, green tire radial runout can be optimized.

Description

[0001] priority statement [0002] This application is a partial continuation of the previously filed PCT application "Tire Manufacturing Method For Improving The Uniformity Of A Tire" with serial number PCT / US2004 / 039321, filed on November 2004 Submitted on the 19th. Background technique [0001] The present invention relates to a method of manufacturing tires, and more particularly to improving the uniformity of tires by reducing the runout of the (unvulcanized) green tire. For a tire, more specifically a radial tyre, the radial runout (RRO) of the green tire is affected by many variables introduced during the green tire assembly process. When the radial runout of the tire exceeds the acceptable range, harmful vibration may be generated, affecting the driving and operation of the vehicle. For these reasons, tire manufacturers strive to keep tire runout to a minimum. [0002] A well-known and commonly used method of reducing runout is to buff the tread of the tire in the a...

Claims

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Application Information

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IPC IPC(8): B29D30/06
CPCB29D30/0633B29D2030/0635
Inventor W・D・莫拜E・M・佩尔斯因J・M・特雷勒
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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