Tyre non-circularity measuring method

Abstract

The method for measuring tire out-of-roundness described in the present invention measures and calibrates tire profile parameters to intuitively and comprehensively detect the out-of-roundness index and provide it to the process quality department to analyze the degree of tire geometric deformation. In the process of tire building, due to the belt layer affecting the deformation of the tread and the uneven thickness of the tire wall, the tread is raised and sunken. The establishment can reflect the tire out-of-roundness caused by the material and manufacturing process, which is reflected in the unevenness of the tire. The parameters that must be checked during the roundness inspection process include top lateral deviation, top radial deviation, central radial deviation, bottom radial deviation, bottom lateral deviation, top bulge, top sag, bottom bulge and bottom sag.

Description

technical field [0001] The invention relates to a measuring method, in particular to a method for measuring and calibrating multiple parameters involved in tire out-of-roundness. Background technique [0002] Tires are the main action-executing components of motor vehicles. The stability of tire performance and compliance with safety design standards will directly determine the safety of personnel using motor vehicles. The tire is a circular rotatable body with a cylindrical section, which is made of multi-layer rubber prefabricated materials with steel cords and composite rubber prefabricated materials through lamination, molding, vulcanization and setting. The tire with the above structure inevitably has problems such as uneven density and geometric deformation in its constituent materials, which is often referred to as tire out-of-roundness. According to relevant mechanical principles, tires with a certain degree of deformation will inevitably produce alternating radial ...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing tire production and testing process, there is no comprehensive and targeted theoretical support and specific measurement methods. Therefore, there is a certain blindness in the measurement of out-of-roundness, lack of intuitive testing process guidance, and tire out-of-roundness measurement. The detection equipment is outdated and the detection results are unstable, which in turn affects the safe driving of motor vehicles

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