Combined feature dimensional parameter analysis
AssigneeThe Boeing Company
InventorBruce A. Wilson
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Abstract
A computerized method is disclosed for determining the size and location effects of simulated or manufactured features on an object, determining the transformation of a pattern of features, determining usable feature size within a pattern of features, and determining the remaining feature tolerances. The simulated or manufactured position of a pattern of features is used to determine how to translate a tolerance zone framework. Positional errors and remaining feature tolerances are determined relative to the translated design framework.
Claims13
A machine-readable medium for programming a computer to determine positional error and remaining feature relating tolerance for a plurality of manufactured external features, said medium including processor executable instructions comprising:
- determining a true position for each of said plurality of manufactured external features;
- determining a feature relating tolerance zone framework (FRTZF) from said true positions;
- determining a center for each of said plurality of manufactured external features;
- determining a size of each of said plurality of manufactured external features;
- fitting said FRTZF to said centers of said plurality of manufactured external features to determine a best fit framework;
- determining a transformed true position for each of said plurality of manufactured external features;
- superimposing each of said transformed true positions to form a one true position;
- determining the location of each of said plurality of manufactured external features relative to said one true position;
- determining a region encompassing said manufactured external features represented about said one true position;
- determining a first minimum circumscribing circle about said region;
- determining the diameter of said first minimum circumscribing circle;
- and
- determining said remaining feature related tolerance from said minimum circumscribing circle.
A method for determining positional error and remaining feature relating tolerance for a plurality of manufactured external features on an object, comprising:
- determining a true position for each of said plurality of manufactured external features;
- determining a framework from said true positions;
- determining a location for each of said plurality of manufactured external features;
- determining a size of each of said plurality of manufactured external features;
- fitting said framework to said locations of each of said plurality of manufactured external features to determine a fit framework;
- determining a transformed true position for each of said plurality of manufactured external features to said fit framework;
- organizing each of said transformed true positions into a one true position;
- organizing the location of each of said plurality of manufactured external features relative to said one true position;
- determining said positional error for each of said plurality of manufactured external features from said one true position;
- determining a region encompassed by said organized plurality of manufactured external features;
- determining a minimum circumscribing circle about said region;
- determining the diameter of said minimum circumscribing circle;
- determining said remaining feature related tolerance from said minimum circumscribing circle;
- and
- storing said remaining feature related tolerance on a machine-readable medium for subsequent use.
Dependencies are inferred from the claim text.