Blade groove observation device and blade groove observation method

摘要

To improve the workability of blade groove inspection. A blade and groove observation device has a carrier, rotation axes parallel to each other, and two rollers rotatably provided with respect to the carrier under the carrier, and protrudes downward from the carrier A light irradiation unit provided in such a manner; and an observation unit provided to project downward from the carrier and observing a light irradiation area inside the wing groove by the light irradiation unit; And the observation unit is located below a plane including the central axes of the two rollers. [Selected figure] Figure 1