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An inspection system for determining if the measured features within a measured pattern of features on a mechanical component are within specified tolerances by repositioning a representation of the dimensioned features relative to the corresponding measured pattern of features within the coordinate

An inspection system for determining if the measured features within a measured pattern of features on a mechanical component are within specified tolerances by repositioning a representation of the dimensioned features relative to the corresponding measured pattern of features within the coordinate system and by determining whether each measured feature is within the tolerance zone associated with the corresponding dimensioned feature. To accomplish this purpose, a data processor is provided for simulating the relative positions of the measured and dimensioned pattern of features and for moving in incremental steps the dimensional pattern relative to the measured pattern within a predetermined coordinate system. The directions of movement for the incremental steps are chosen by the data processor by simulating restoring forces between corresponding features of the measured and dimensioned patterns. In one mode of operation, these restoring forces are simulated only for those measured features that are outside of the tolerance zone of the corresponding dimensioned features and additional trapping forces are simulated between corresponding features of the measured pattern and the tolerance zone boundary of that feature if the measured features are up against and inside the tolerance zone boundaries of the corresponding dimensioned features and neither restoring nor trapping forces are simulated if the measured feature is inside its tolerance zone but not up against the tolerance zone boundary. In another mode, the trapping forces are turned off and all the restoring forces are used to determine the direction of movement of each incremental step. The second mentioned mode is used to obtain a good starting position for the first mode mentioned.

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An inspection system for determining if the measured features within a measured pattern of features on a mechanical component are within specified tolerances by repositioning a representation of the dimensioned pattern of features relative to corresponding measured features in a dimensioned pattern

An inspection system for determining if the measured features within a measured pattern of features on a mechanical component are within specified tolerances by repositioning a representation of the dimensioned pattern of features relative to corresponding measured features in a dimensioned pattern of features and by determining whether each measured feature is within a tolerance zone associated with the corresponding dimensioned feature, comprising (a) measured data input means for providing measurement signals representative of a measured pattern of features identifying the actual positions of features on a mechanical component being inspected; (b) dimensioned data storage means for providing dimension signals representative of the position of the features in the dimensioned pattern of features identifying the ideal location of the features on the mechanical component being tested; (c) data processing means responsive to said measurement signals and said dimension signals for simulating the relative positions of the measured and dimensioned pattern of features and for moving in incremental steps the dimensioned pattern relative to the measured pattern within a predetermined coordinate system to determine if all of the simulated features of a mechanical component can be positioned within the specified tolerance zones associated with the corresponding dimensioned pattern of features wherein in one mode of operation the directions of movement for the incremental steps are chosen by simulating restoring forces between corresponding features of the measured and dimensioned patterns only if the measured features are outside of the tolerance zones of the corresponding dimensioned features and by simulating trapping forces, substantially larger than said restoring forces, where the trapping forces are related to the distance between the corresponding features of the measured pattern and the tolerance zone boundaries of the corresponding dimensioned feature if the measured features are within the tolerance zones of the corresponding dimensioned features and up against the corresponding tolerance zone boundaries; and (d) output means for producing output signals indicative of whether all of the measured features fall within the tolerance zones of all of the corresponding dimensioned features.