DISCRIMINATION METHOD FOR PART ATTITUDE AND PART CARRYING DEVICE

PROBLEM TO BE SOLVED: To secure a variation in detected light amount according to a part attitude to reduce erroneous detection by avoiding the detection of a light component which specifies light incidence range and light detection range for parts and obstructs the discrimination of the part attitude. SOLUTION: In this method for discriminating the part attitude, illuminating light is radiated to the part through a radiating port 1c opening in a part passing area in carrying surfaces 1a and 1b, to which the part 10 is carried, formed by exposing a light transmitting material to a part of the outer surface thereof, the detection axis Dx of the detection light is set in a direction coming out of the radiating axis Cx of the illuminating light, the detection light outgoing along the detection axis is detected through a detection port 1d opening in a part passing area on the carrying surfaces, and the part attitude is discriminated by the light amount of the detected light. A radiating port and a detection port are disposed at positions facing the outer surface of a common part, and the interval between the radiating port and the detection port and the relative angle of the radiating axis to the detection axis are set so that direct reflected light of the illuminating light by the outer surface of the part does not become the detected light detected through the detection port. COPYRIGHT: (C)2005,JPO&NCIPI