Automatic Optical Inspection Robot for Big Roller Appearance Defects is a professional inspection machine for medium and big rollers. It can detect the defects on the diameter, dent, chamfer and both face of the rollers. By using robots to move the rollers, it can successfully avoid the second damage.The inspecting speed reaches 30 pcs per second, and it can operate 7*24 hours uninterrupted in various circumstance. The inspecting functions is more multiple with advanced inspection technology. The operation of workers becomes more convenient with friendly human-machine interface.