Rule based apparatus and method for evaluating an engineering de

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36446803, 364559, 364560, 36447424, 395919, 395140, G06F 1750

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055860524

ABSTRACT:
An apparatus and method provides for the input of geometric data representing features of a manufactured part and data representing datums and tolerances for the features. Relationships are established between the data and degrees of freedom are determined for the part features and tolerances. The relationships and degrees of freedom are interpreted to determine if the tolerance plan defined by a designer is complete and well formed. If it is not, the designer may then revise the tolerancing plan to provide for a more consistent and useful tolerancing plan resulting in higher quality, lower cost manufactured parts and assemblies.

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Fleming, A. "Geometric Relationships between Tolerance & Features"; Artificial Intelligence, V. 37/1-3/1988.
Clement, A. "The Resolution of Positioning Solids". Annals of the CIRP, vol. 40/Jan. 1991.
A. Clement et al.; "A Dimensioning and Tolerancing Assistance Model for CAD/CAM Systems"; Int. J. Adv Manf. Technol (1994).
Bernstein, N. S. and Preiss, K, Representation of Tolerance Information in Solid Models 1989, ASME Design Automation Conference, Sep. 17-21.
Clement, A., Three-Dimensional Tolerancing of Mechanical Systems: Theory and Practice, 1994.
Lee, Jinkoo, Tolerance Optimization Using Genetic Algorithm and Approximated Simulation, 1992.
Representation of Tolerance Information in Solid Materials, Proceedings of 1989 ASME Design Automation Conference, Montreal, Canada, Sep. 17-21, 1989, N. S. Bernstein and K. Preiss.

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