| 摘要 |
PROBLEM TO BE SOLVED: To provide a round rod inspection apparatus and a method of inspecting a round rod for easily detecting surface defects, such as a flaw and a smear in an outer peripheral surface of a round rod including an extremely thin pipe shape by a simple device consisting of only a laser light source and a light receiving sensor.SOLUTION: The round rod inspection apparatus includes: the laser light source for applying laser beams, namely parallel light, to an outer peripheral surface nearly vertically to an axis of the round rod including a pipe shape; and a light-receiving sensor provided so that an angle to an incidence direction of laser beams in the axis of the round rod is more than 90 degrees and less than 180 degrees, in axial cross-sectional view of the round rod. Reflection light on the outer peripheral surface of laser beams is received by the light receiving sensor, and the outer peripheral surface is inspected from the level of the received light. |
