To easily create a cross-sectional drawing in a bead part of a tire model.SOLUTION: There is provided a method for creating a cross-sectional drawing of a tire model with a computer. A mold profile drawing unit 14 draws a mold profile 82 representing an outer contour line of a tire cross section (S2). A bead core drawing unit 16 draws a bead core 58 in the mold profile (S3). A boundary line drawing unit (outer rubber layer line drawing unit 18) draws a member boundary line (outer rubber layer line 84) that extends from the inside in a radial direction of the bead core to the outside in the radial direction on the outside in a width direction of the bead core in a bead part of a tire (S4). A boundary drawing step includes drawing, as the member boundary line, a line extending from a start point PA1 located on the inside in the radial direction and separated from a bottom face 58A of the bead core by a predetermined distance, passing through a relay point PB1 located on the outside in the width direction of the bead core by a predetermined distance, and coming into contact with a distance regulation arc C5 installed on the outside in the radial direction of the bead core.SELECTED DRAWING: Figure 2

    【課題】タイヤモデルのビード部における断面図を簡便に作成する。【解決手段】タイヤモデルの断面図をコンピュータで作成する方法である。モールドプロファイル作図部14が、タイヤ断面の外輪郭線を表すモールドプロファイル82を作図する(S2)。ビードコア作図部16が、モールドプロファイル内にビードコア58を作図する(S3)。境界ライン作図部(外側ゴム層ライン作図部18等)が、タイヤのビード部におけるビードコアの幅方向外側においてビードコアの半径方向内側から半径方向外側に延びる部材境界ライン(外側ゴム層ライン84等)を作図する(S4)。境界作図ステップは、ビードコアの底面58Aに対して半径方向内側に所定の距離を隔てて位置する始点PA1から、ビードコアの幅方向外側に所定の距離を隔てて位置する中継点PB1を通り、ビードコアの半径方向外側に設置した距離規定円弧C5と接する線を、部材境界ラインとして作図する。【選択図】図2


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    Title :

    METHOD FOR CREATING TIRE MODEL


    Additional title:

    タイヤモデルの作成方法


    Contributors:

    Publication date :

    2021-11-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60C VEHICLE TYRES , Fahrzeugreifen / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



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