To provide a method of detecting a circumferential main groove and a device for detecting a circumferential main groove each of which enables a position of the circumferential main groove formed in a tire to be detected by a simple method.SOLUTION: The method of detecting a circumferential main groove is provided for detecting a position of the circumferential main groove of a tire on the basis of 3D data of the tread surface of the tire using a computer. This method includes: a cross-sectional data extracting step of extracting the cross-sectional data of the tread surface along one direction inclined with respect to the tire circumferential direction at a plurality of positions in the tire circumferential direction; a region dividing step of dividing each of the cross-sectional data into a plurality of regions along one direction; an evaluation step of evaluating the relative unevenness in the region; and a circumferential main groove identifying step of superposing the evaluation results of the divided regions which are the same position in the tire circumferential direction and identifying the position of the circumferential main groove of the tire.SELECTED DRAWING: Figure 7

    【課題】簡便な方法によりタイヤに形成された周方向主溝の位置を検出可能な周方向主溝検出方法及び周方向主溝検出装置を提供する。【解決手段】タイヤのトレッド面の3Dデータからタイヤの周方向主溝の位置をコンピュータにより検出する周方向主溝検出方法であって、タイヤ周方向に対して傾斜する一方向に沿ったトレッド表面の断面データを、タイヤ周方向の複数箇所において抽出する断面データ抽出ステップと、断面データをそれぞれ、一方向に沿って複数の領域に分割する領域分割ステップと、領域内における相対的な凹凸を評価する評価ステップと、タイヤ周方向で同一位置にある分割領域の評価結果を重ね合わせ、タイヤの周方向主溝の位置を特定する周方向主溝特定ステップとを含む態様とした。【選択図】図7


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    Title :

    METHOD OF DETECTING CIRCUMFERENTIAL MAIN GROOVE AND DEVICE FOR DETECTING CIRCUMFERENTIAL MAIN GROOVE


    Additional title:

    周方向主溝検出方法及び周方向主溝検出装置


    Contributors:

    Publication date :

    2020-10-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B60C VEHICLE TYRES , Fahrzeugreifen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen





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