Sequential Tolerance Control in Machining

Project: Research project

Project Details


Cavalier 9622620 This research centers on making effective use of real-time measurement data to develop and implement the concept of Sequential Tolerance Control. The approach uses measurement information at the completion of stage j to exploit available space inside a dynamic feasible zone and reposition the set point for operations j+1 to n. The procedure is repeated at appropriate locations along the n operations so as to optimize the production of an acceptable part. A model and solution procedure for a generic n-constraints, n-operations problem is sought. The performance of the procedure will be tested, as well as technological implementation demonstrated. Conventional tolerance control specifies a fixed set point for each operation and permissible variation about this set point to insure compliance with specifications. This approach is inadequate for complex, low volume, high value added parts such as those found in aircraft, nuclear or precision instrument manufacturing. The above research should prove useful to alleviate the above concerns, as well as provide useful ramifications for the production of complex, low-volume, high-value-added parts.

Effective start/end date8/1/961/31/00


  • National Science Foundation: $232,167.00


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