Component inspection method and device

A component inspection device for performing inspection related to a spatial arrangement state of one or a plurality of components as targets in an assembly formed by assembling a plurality of components, comprising:

• a three-dimensional sensor configured to scan a region including the target component from outside;
• a measurement data acquisition section configured to acquire a measurement data including a part of an outer surface of the target component by the scanning using the three-dimensional sensor;
• a design data acquisition section configured to acquire, from a database, a design data including an individual outer shape of the target component and a positional relationship of the component within the assembly;
• a loss region determination section configured to obtain a loss region in the measurement data of the target component by comparing it with the design data of the target component;
• a measurement parameter calculation section configured to obtain a measurement parameter of the three-dimensional sensor which is suitable for acquiring the measurement data of the loss region;
• and
• an information output section configured to output the measurement parameter to a worker for additional scanning.