Tyre non-circularity measuring method

Abstract

The invention relates to a method for measuring the out-of-roundness degree of a tire, and measures and calibrates by aiming at the parameter of the outline of the tire, thereby visually and synthetically detecting the index of the out-of-roundness degree, and the invention also provides for the processing quality department to analyze the geometric distortion degree of the tire. During the process of the tire molding, for a tread bracing layer, the deforming of a tread of tire and the nonuniformity of the thickness of the tire wall leads the convex and the concave of the tread of tire are affected, the out-of-roundness degree of the tire which is formed by material and manufacturing process is set, and the necessarily detecting parameters which is embodied during the process of detecting of the out-of-roundness degree of the tire comprise a top lateral deviation, a top radial deviation, a central radial deviation, a bottom radial deviation, a bottom lateral deviation, a top bulge, a bottom bulge and a bottom concave value.

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 The detection equipment is outdated and the detection results are unstable, which in turn affects the safe driving of motor vehicles

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