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A functional tolerance model: an approach to automate the inspection process

Hunter R., Guzman M., Möller J., Perez J.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 31, nr 2

662-670

EN

Purpose: Purpose of this paper is the definition of a framework to describe the Technological Product Specifications (TPS) and the information associated with the geometric dimensioning and tolerancing to integrate the design concepts into a commercial inspection system. Design/methodology/approach: A functional tolerance model provides a complete framework to define the geometric dimensioning and tolerancing and its relationship with the part geometry and the inspection process. This framework establishes a connection between a computer aided design and computer aided inspection system throughout the exportation of the information associated to the dimensions and tolerance of the part into a commercial CAI system. Findings: They are mainly focused on the definition of a framework that describes the relationship between the entities of dimensions and tolerances with the geometry of the part. The information imported to a CAI system allows to develop the inspection process without the additional information provided by a physical drawing of the part. Research limitations/implications: They regard the limited access to commercial CAI system and to the lack of protocols of exchange of data associated to the tolerances of the part. Practical implications: They involve facilitation of the inspection process development. This implication allows realizing the inspection process reducing the time spent to define the geometry to inspect and the parameters that must be controlled. Originality/value: The main value of this research is the development of a unique framework to extract the information related to the geometric dimensioning and tolerances and the geometry of the part in a common model. This model provides a complete definition and representation of the entities, attributes and relationship of design and inspection system.

2

Implementation of a tolerance model in a computer aided design and inspection system

Hunter R., Guzman M., Möller J., Perez J.

Journal of Achievements in Materials and Manufacturing Engineering

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2006

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Vol. 17, nr 1-2

345--348

EN

Purpose: Purpose of this paper is present a detailed framework to integrate the Computer Aided Design (CAD) and Inspection (CAI) systems through the integration of the Geometric Dimensioning and Tolerancing (GD&T) with the inspection process in coordinate measuring machines (CMMs). Design/methodology/approach: The approach used to develop a prototype of a Knowledge Based System (KBS) applied to inspection process establishes a new methodology for integrate the geometric dimensioning and tolerancing (GD&T). The integration is achieved through the definition of the knowledge units for functional properties of GD&T, inspection resources and inspection operations in a common knowledge model. The manufacturing and processing applications are the main topics approach of this paper. Findings: The findings are focused in modeling the features and interactions between knowledge units associated to topology, geometry and tolerances with the inspection process activities. The implementation of the product knowledge model is presented in a computer platform that extracts and represents the GD&T information in a CAI system. Research limitations/implications: The implications are focused on the automation of the inspection process in a KBS application. The future research is focused on the use of artificial intelligent technique, such as genetic algorithms and neural networks, to optimize the time to execute the inspection process. Practical implications: The main outcomes and implication of the KBS prototype application are focused on the reduction of the time spend to develop the inspection process. This KBS application provides the needed information to elaborate this process without the human interface. Originality/value: The original value of this paper is the integration of the design and inspection specification in a unique prototype application. The knowledge model has been defined in a common modeling language (UML) and can be implemented in different informatics platforms.

3

Rozwój przemysłowych zastosowań technologii informacyjnych dla wspomagania procesów wytwórczych i pomiarowo-kontrolnych

Kern J., Wiechowski J.

Prace Przemysłowego Instytutu Elektroniki

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2004

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nr 150

29--50

PL

Artykuł przedstawia niektóre zagadnienia badawczo-techniczne dotyczące zastosowań technik informacyjnych w procesach wytwórczych, badaniach, ochronie środowiska i zdrowia. Zagadnienia te są prezentowane na przykładach opracowań Przemysłowego Instytutu Elektroniki, zrealizowanych w ostatnim okresie. W obszarze technik wspomagających procesy produkcyjne autorzy opisali sieci pomiarowo-informatyczne i systemy wizyjne (w tym systemy rentgenograficzne) dla kontroli produktów, systemy technologiczne dla charakteryzacji paliw stałych i materiałów, systemy precyzyjnego spawania wiązką elektronową, systemy baz danych w zastosowaniach przemysłowych i badawczych. Przedstawiane przykłady opracowań z zakresu ochrony środowiska i zdrowia dotyczą systemów wspomagania renowacji i demontażu zużytej aparatury elektronicznej oraz informatycznego systemu diagnostyki osteoporozy. Ponadto, artykuł pokazuje perspektywy rozwojowe zastosowań technologii informacyjnych w inżynierii aparatury technologicznej i pomiarowej.

EN

The paper presents some research and technical problems related to applications of information technology in industry, for automation of manufacturing and testing processes. These problems are shown with the examples of developments, performed in the last years by the Industrial Institute of Electronics. In the area of technologies, supporting manufacturing processes, the authors described measurement-informatics' networks and machine vision systems (including X-Ray systems) for industrial products inspection, technological systems for characterization of solid fuels and materials, systems for precision welding with electronic beam, data base systems in industrial and testing applications.. In addition, the paper shows perspectives of development of those information technology applications in the areas of technological and measurement instrumentation engineering.