THREE-DIMENSIONAL MEASURING JIG AND THREE-DIMENSIONAL MEASURING METHOD USING THE SAME

• Main Authors: IMOTO HARUTAKA, IKEDA KAZUTAKA
• Format: Patent
• Language: English
• Published: 26.01.2012
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a three-dimensional measuring jig that can, in addition to realizing improvement in measuring accuracy where a measuring point is on a plane or at an edge, accurately measure three-dimensional coordinates of the measuring point even when it is on a concave, and a three-dimensional measuring method using this jig.SOLUTION: A three-dimensional measuring jig 1 that holds a spherical reflector R for use in obtaining three-dimensional coordinates of a measuring point P on a work W with a laser measuring device L comprises a measuring groove 4 that slidably holds the reflector R and an indication point 31 in contact with the measuring point P on the work W. The measuring groove 4 is formed in a direction of approaching or moving away from a region in which the measuring point P is present, and the indication point 31 is arranged at least on the extension of a line segment d linking the center Rp of the reflector R held by a far end part 41 away from the measuring point P of the measuring groove 4 and the center Rp of the reflector R held by a near end part 42 closer to the measuring point P of the measuring groove 4.