Geometrical specification and verification of products is achieving a more and more important role in Industry . In case of specifications associating modifiers to positional tolerances and datums, the direct conformance verification of a workpiece is not immediate. Besides advanced functions of CMM software, which usually only indicate conformance or non-conformance to specifications, a more detailed analysis of a specific workpiece can be performed using manual or graphical computations as e..g. in “paper gaging” techniques. Aim of this work is to present a prototypal knowledge based module implementing the tolerance analysis procedure and the conformance verification rules. This module, implemented in Java, automatically generates a graphical representation of the tolerance zones on which a rule based tolerance analyzer infers the conformance/non-conformance conditions, allowing the operator to identify and possibly improve the fabrication process. The software module uses a design patterns approach to structure the overall architecture in order to simplify knowledge reuse and promote modularization.

Knowledge driven verification of positional tolerances

CONCHERI, GIANMARIA;
2013

Abstract

Geometrical specification and verification of products is achieving a more and more important role in Industry . In case of specifications associating modifiers to positional tolerances and datums, the direct conformance verification of a workpiece is not immediate. Besides advanced functions of CMM software, which usually only indicate conformance or non-conformance to specifications, a more detailed analysis of a specific workpiece can be performed using manual or graphical computations as e..g. in “paper gaging” techniques. Aim of this work is to present a prototypal knowledge based module implementing the tolerance analysis procedure and the conformance verification rules. This module, implemented in Java, automatically generates a graphical representation of the tolerance zones on which a rule based tolerance analyzer infers the conformance/non-conformance conditions, allowing the operator to identify and possibly improve the fabrication process. The software module uses a design patterns approach to structure the overall architecture in order to simplify knowledge reuse and promote modularization.
2013
XXIII International Conference on Graphics Engineering - Proceedings
XXIII International Conference on Graphics Engineering
9788469579305
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2839440
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