| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hole positioning method capable of positioning with high precision a hole formed in a spherical surface of the object to be positioned, even with the displacement of the spherical surface. <P>SOLUTION: The method for positioning a hole 51 formed in a hemispherical surface that is the object 5 to be positioned includes chucking the object; capturing images of the hole formed in the hemispherical surface using a vision device 1 every 120° rotation about a θ-axis; determining the θ-axis center of the positioning object from three images of the hole; determining the ψ-axis angle of the hole with an ideal spherical diameter on the basis of the distance between the θ-axis center determined and the hole; rotating the angle determined with respect to the ψ-axis to position the hole so that it is in a position in front of the vision device; and horizontally (X) or vertically (Y) moving the positioning object such that the center of the hole coincides with the θ-axis center. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
