Generic PLM system for SMEs: Application to an equipment manufacturer

For several years, digital engineering has increasingly taken a more important place in the strategic issues of mechanical engineering companies. Our proposition is an approach that enables technical data to be managed and used throughout the product life-cycle. This approach aims to provide assistance for costing, development and industrialization of the product, and for the capitalization, the reuse and the extension of fundamental knowledge. This approach has been experimented within several companies. This paper presents the case in a company environment that designs and produces families of ship equipment parts

QUOTATION FOR THE VALUE ADDED ASSESSMENT DURING PRODUCT DEVELOPMENT AND PRODUCTION PROCESSES

This communication is based on an original approach linking economical factors to technical and methodological ones. This work is applied to the decision process for mix production. This approach is relevant for costing driving systems. The main interesting point is that the quotation factors (linked to time indicators for each step of the industrial process) allow the complete evaluation and control of, on the one hand, the global balance of the company for a six-month period and, on the other hand, the reference values for each step of the process cycle of the parts. This approach is based on a complete numerical traceability and control of the processes (design and manufacturing of the parts and tools, mass production). This is possible due to numerical models and to feedback loops for cost indicator analysis at design and production levels. Quotation is also the base for the design requirements and for the choice and the configuration of the production process. The reference values of the quotation generate the base reference parameters of the process steps and operations. The traceability of real values (real time consuming, real consumable) is mainly used for a statistic feedback to the quotation application. The industrial environment is a steel sand casting company with a wide mix product and the application concerns both design and manufacturing. The production system is fully automated and integrates different products at the same time.design and production, cost driving system, numerical traceability

Integration of CAD and rapid manufacturing for sand casting optimisation

International audienceIn order to reduce the time and costs of the products development in the sand casting process, the SMC Colombier Fontaine company has carried out a study based on tooling manufacturing with a new rapid prototyping process. This evolution allowed the adequacy of the geometry used for the simulation to the tooling employed physically in the production. This allowed a reduction of the wall thickness to 4?mm and retained reliable manufacturing process

A Constraints Driven Product Lifecycle Management Framework

Organised by: Cranfield UniversityThe management of the product information during its lifecycle is a strategic issue for the industry. In this paper, a constraints driven framework is proposed to create and manage the product information. The method proposes to each actor that intervenes on the product life cycle to act on the quote, the development or the industrialisation of the product. From each phase of the product lifecycle, the extraction, capitalisation and reuse of fundamental knowledge is coordinated by a generic meta-model. This paper explains this approach through experiments in three different SMEs of the mechanical industry.Mori Seiki – The Machine Tool Compan

Concurrent Cost Engineering for decisional and operational process enhancement in a foundry

International audienceA company needs to attract new customers by reducing their production costs, controlling the process risks and developing differentiation factors. This scientific contribution is based on methodological propositions and deployments using concurrent cost engineering. Therefore, the bases of this paper are to understand the economical factors, their place within the industrial processes and to propose methodological solutions for a full cost engineering integration in the sand casting process, from negotiations to customer delivery. The approach is based on product and process definition, cost evaluation assistance, production impact simulation, process performance enhancement and total digital traceability for parts and tooling in a steel sand casting foundry

L'ingénierie numérique pour l'amélioration des processus décisionnels et opérationnels en fonderie

La fonderie française fait face à la concurrence de pays émergeants qui s'appuient sur des règles différentes en matière de législations fiscales, sociales et environnementales. L'arrivée de ces nouveaux entrants diminue le nombre et la rentabilité des nouvelles affaires, modifiant ainsi l'équilibre financier des entreprises.pour rester compétitive, la fonderie française a besoin d'attirer de nouveaux clients, en diminuant ses coûts de revient, en maîtrisant les risques liés aux procédés et en développant des facteurs de différentiations (qualité, innovation, réactivité, etc.). La voie scientifique et de progrès repose sur la proposition et le déploiement de méthodologies mettant en oeuvre les technologies d'ingénierie numérique. Ce travail de thèse se positionne donc dans le souci de comprendre quels sont les verrous qui freinent le déploiement de ces technologies et de proposer des solutions méthodologiques pour leurs intégrations tout au long du processus d'élaboration du produit en fonderie, depuis la négociation jusqu'à la livraison client. Nous proposons une nouvelle approche globale, basée sur la définition du produit et de son processus de fabrication, pour l'évaluation des coûts complets, la simulation des impacts logistique et financier d'une commande, le développement rapide de produit, l'amélioration des performances en production et la traçabilité numérique totale des pièces et des outillages. Nous en expliquons les fondements et les points innovants, et argumentons les différentes solutions qu'il est nécessaire de créer, tant aux niveaux conceptuel qu'opérationnel. Enfin, nous démontrons la pertinence de cette approche grâce à une étude de cas réel, réalisée au sein de SMC Colombier-Fontaine, le partenaire industriel de cette thèse effectuée en convention CIFRE, où l'ensemble fonctionne actuellement avec succès.NANTES-BU Sciences (441092104) / SudocNANTES-Ecole Centrale (441092306) / SudocSudocFranceF

Méthodes d’évaluation des attaques d'Ips typographus (Coleoptera, Scolytinae) en pessière

info:eu-repo/semantics/publishe

Repérage des foyers de scolytes de l'épicéa dans l'Est de la France: étude méthodologique. La santé des forêts (France) en 2003 et 2004. Bilan annuel

Les Cahiers du DSF 1: 31-32info:eu-repo/semantics/publishe