Development and Implementation of Novel Six-Sided Automated Optical Inspection for Metallic Objects

This paper proposes an inspection system based on the Automated Optical Inspection System (AOI) to inspect six-sided metallic objects. The objective is to develop a system that can provide a good quality of images, with the objects moving on a production line. The proposed system comprises of an industrial robotic arm and a set of cameras. Also, the scanning system provides six-sided inspection, that divided into two stages, i.e., (1) a main-frame inspection (5-side) and (2) an external frame inspection (1-side). An industrial robotic arm is involved to pick-up the object from the production line. Then, the system detected the orientation, shifted the position of the picked object, and calibrated them to the reference orientation and position accordingly. To validate the quality of the images, we use pixel differences to analyze the repeatability of the object pose. According to the experimental results, the system not only provides clear, and it has good performance position repeatability of 4.95 mm.