CAD and vision in rangefinder-based dimensional metrology

Abstract

A concept of CAD model -ixsed automated 3 0 measurement and the evaluriton of its feasibility in cases drawn from industrial needs. Automated 3 0 measurement can be seen as comprising two steps: measurement planning and measurement execution. The concept was evaluated by implementing a graphical measurement planning tool and two automatic optical measurement systems equipped with vision systems for sensory feedback. The operatirn chain from CAD modelbased measurement planning to comparison between the measured and designed geometries was demonstrated. Successful experiments with automatic operation controlled by the measurement plan and vision guidance were carried out and the key 'oerformance criteria were met.