Being inspection modulo of the tubed component which has

摘要

PROBLEM TO BE SOLVED: To provide an inspection method of an outer surface section of a cylindrical member that observes the entire outer peripheral surface of the cylindrical member, by only the rotation in one direction, does not require a reversing process of the member, and hence attains simplification, when the inspection time is reduced and automation is attained.;SOLUTION: The inspection method of the cylindrical member having three or more recessed parts having rotation symmetry in the outer surface section is provided. The recessed parts are formed as recessed parts, having an inner surface and a bottom facing each other, the observation center position is set on the extension line of the center position, between the first recessed part and second recessed part so that the whole adjacent first recessed part and second recessed part perpendicular to the outer surface section are stored in a viewing angle, and the range from the left inner surface of the first recessed part to the right inner surface of the second recessed part becomes the view angle. The outer surface of the cylindrical member is observed that is positioned between the left inner surface of the first recessed part and the bottom surface, between the right inner surface of the second recessed part and the bottom surface, and between the first recessed part and the second recessed part.;COPYRIGHT: (C)2010,JPO&INPIT