210104 複雑加工部品形状のリバースエンジニアリング(OS15 生産加工1,オーガナイズド・セッション)

概要

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This paper deals with a method to construct the mathematical model of the 3D form of a functional part with complex shape based on measurement data. The first process is to smooth measurement data based on a hypothesis that a small area of curved surfaces can be approximated to a part of an ellipsoid. The second process is to construct 3D lattice point data by interpolating and thinning of measurement points. The third process is to extract boundary lines of surfaces composing a physical model form according to changing rate of curvatures and normal vectors. The last process is to approximately define the NURBS surface for each segmented points by the minimum square method. In order to validate the effectiveness of the proposed method, it is described to construct the mathematical model of a crankshaft from measurement data.
一般社団法人日本機械学会の論文
2011-03-17