CMM feature accessibility and path generation

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Abstract
In this paper, the accessibility of coordinate measuring machines (CMM) and path generation in dimensional inspection are studied. The objective is to develop an algorithm which can determine all the feasible probe orientations for the inspection of a workpiece using a touch trigger probe. The feasible probe orientations ensure that when the probe tip is in contact with the workpiece there should be no collision with either the touch probe or the probe stylus. The algorithm should be able to handle internal holes and complex surfaces and be capable of extending to multiple surfaces. After solving for the probe orientations, a heuristic method determines the number of probe orientations required to inspect the workpiece. It then picks the optimal probe orientation and creates a collision-free inspection path based on the information for probe orientation.