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US 4,855,923 AGranted
Parts assembly using signature analysis
AssigneeXerox Corporation
InventorDavid M. Fullmer
Life of this patent
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Abstract
A method of assembling parts in which, before actual assembly of the parts, the forces associated with a good assembly of parts and the forces associated with a faulty assembly of parts are identified to train a pattern of recognition signature analysis system. During assembly, the forces required to actually assemble the parts are measured and a determination is made by the system as to whether these forces are associated with a good assembly or a faulty assembly to determine if the assembled part should be accepted or rejected.
Claims5
A method of assembling parts, including the steps of:
- sensing, at discrete time intervals before actual assembly of the parts, forces exerted on the parts corresponding to a good assembly and a faulty assembly;
- processing statistically the sensed forces to determine waveforms corresponding to the forces associated with a good assembly and the forces associated with a faulty assembly;
- detecting, at discrete time intervals, forces exerted on the parts during the actual assembly of the parts;
- processing statistically the detected forces to determine waveforms of the forces used during actual assembly of the parts;
- comparing the waveforms of the forces used during actual assembly of the parts to the waveforms corresponding to the forces associated with a good assembly and a faulty assembly to classify the waveforms of the forces used during actual assembly of the parts as those associated with a good assembly or those associated with a faulty assembly.
2 more elements
Dependencies are inferred from the claim text.