Method and system for optically inspecting outer peripheral surfaces of parts

摘要

A method and system for optically inspecting the entire outer peripheral surface of a part are provided. The system includes an enclosure which allows movement of a part relative to the enclosure both prior to and after inspection within the enclosure. An illumination assembly simultaneously illuminates a plurality of exterior side surfaces of the part which are annularly spaced about the axis of the part with radiation when the part is at a predetermined location within the enclosure to obtain corresponding reflected radiation signals. A plurality of lens and detector assemblies are provided. Each of the assemblies forms an optical image of one of the illuminated exterior side surfaces from the reflected radiation signals and detects the formed optical image within the enclosure. A processor processes the detected optical images to obtain a continuous, seamless, 360° panoramic composite image of the peripheral surface of the part.

主权项

1. A method of optically inspecting parts, each of the parts having a length, a width, an axis and an outer peripheral surface which extends 360° around the part, the method comprising:
supporting a part to be inspected at an inspection station so that the part has a predetermined position and orientation for inspection; supporting a plurality of angularly spaced radiation sources at the inspection station; energizing the radiation sources so that the radiation sources simultaneously illuminate a plurality of exterior side surfaces of the part which are angularly spaced about the axis of the part at the inspection station to obtain corresponding reflected radiation signals; forming an optical image of each illuminated side surface from the reflected radiation signals at an image plane; detecting the optical images at the image planes to obtain a plurality of detected optical images; and processing the detected optical images to obtain a continuous, seamless, 360° panoramic composite image of the peripheral surface of the part.