| 摘要 |
WORK PIECE FEEDING MACHINE IS CAPABLE OF CORRECTLY AND EFFICIENTLY SETTING A WORK PIECE (11,120) IN A THROUGH-HOLE OF A CARRIER (14,122). THE MACHINE INCLUDES A POSITIONING UNIT (90) WHICH DETECTS THE AMOUNT OF DISPLACEMENT OF THE WORK PIECE (11,120) WITH RESPECT TO THE THROUGH-HOLE AND CORRECT THE POSITION OF THE WORK PIECE (11,120) IN THE THROUGH-HOLE.THE POSITIONING UNIT (90) INCLUDES: A LIGHTING SOURCE PROVIDED ON THE WORK PIECE SIDE OR THE CARRIER SIDE AND DIRECTING POLARIZED LIGHT ON THE WORK PIECE (11,120) AND THE CARRIER (14,122); A CAMERA (112a,122b) PROVIDED ON THE CARRIER SIDE OR THE WORK PIECE SIDE AND RECEIVING THE POLARIZED LIGHT FROM THE LIGHTING SOURCE SO AS TO CATCH IMAGES OF AN OUT EDGE OF THE WORK PIECE (11,120) AND AN INNER EDGE OF THE THROUGH – HOLE IN A VISUAL FIELD THEREOF; AND AN IMAGE PROCESSOR WHICH MEASURES THE AMOUNT OF DISPLACEMENT ON THE BASIS OF POSITIONS OF THE OUTER EDGE AND THE INNER EDGE. (FIG. 6)
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