Tesis sobre el tema "Génération des gammes de fabrication"
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Spadoni, Michel. "Etude d'un système de génération automatique de gammes de fabrication". Metz, 1987. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1987/Spadoni.Michel.SMZ8701.pdf.
Texto completoOur study mainly concerns the definition of structure of process-planning knowledge and their use by an expert system SAGGA. The different process-planning belonging to such family are you represented by an oriented graph where the nodes are the operations and the branches the geometrical conditions and technical conditions to perform these operations. This graph defines manufacturing process model for the product family. On mathematical point of view, this model is described according to a particular Petri network are the stages and the manufacturing conditions some transitions. The properties of this network called Grafcet which is used in sequential systems control. The graph representing the manufacturing model is defined by productions rules written in an internal language. The expert system then produces the process-planning corresponding to the new product, from part code number and additional information given by user. If the proposed process-planning is not satisfactory, the user may modify then using rules written in an internal language. These rules are then translated in internal language and upted the family knoledge base. Post processor completed the operations defined by the process-planning. It uses an iterative display with technological table and takes into account manufacturing constraints
Mognol, Pascal. "Contribution à la génération automatique de gammes en tournage : génération dirigée par évaluation progressive". Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0019.
Texto completoBen, Jdidia Anoire. "Nouvelle méthode de génération de gammes de fabrication prenant en compte des paramètres économiques et environnementaux". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC028/document.
Texto completoIn manufacturing, the electrical energy consumption is considered as one of the major problems which are systematically related to the gas emission containing carbon dioxide and leading to the greenhouse effect. Studies based on the estimation of the machine tools energy consumption become the interest of researchers in recent decades.As a result, different models for energy estimating are developed in order to minimize the quantity of consumed energy. These models are either empirical or theoretical and are limited to taking into account the dynamic behavior of the cutting system during machining operations. The fundamental contribution of this doctoral thesis is the characterization of the nonlinear behavior of cutting and rolling forces during estimating the consumed energy by a machine tool. The developed approach is based on the determination of the variable cutting forces and bearings forces which are function of time. These forces are deduced by solving the equation of motion based on finite element method using Newark's method coupled with Newton Raphson's algorithm. These forces are used to calculate the power then the consumed energy by the axis feed, the spindle and therefore the machine tool. In order to validate our approach, the power and energy obtained from the model developed are compared with the power and energy obtained with an experimental device. A parametric study is carried out to focus on the impact of the variation of the cutting parameters on the value of the consumed power and energy. An interest is given for different types of defect (innerring spalling, outer ring spalling, eccentricity and unbalance) in order to study their impact on the spindle consumed power during approach and cutting phases under different rotating conditions. Particular attention has also been devoted to develop a global model for optimizing machine too lmovements that minimizes the consumed energy, the production time, the cost and the surface roughness with respect of the technological constraints
Derras, Cédric. "Formalisation de l'imprécision informationnelle et des incertitudes décisionnelles des connaissances expertes pour la génération de processus de fabrication". Nancy 1, 1998. http://www.theses.fr/1998NAN10284.
Texto completoChep, Alain. "Modèle de représentation et d'utilisation des connaissances nécessaires à la conception d'un processus de fabrication : application à la génération de gammes d'usinage en tournage". Châtenay-Malabry, Ecole centrale de Paris, 1992. http://www.theses.fr/1992ECAP0216.
Texto completoAmeer, Muhammad. "Integrated and multi-criteria approaches for process plan generation in reconfigurable manufacturing systems with consideration of system capabilities and product constraints". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0242.
Texto completoModern manufacturing systems are going through a paradigm shift where the focus is on the integrating the digital technologies in the production systems to address the challenge of uncertain market demands. Manufacturing systems needs certain amount responsiveness to address these uncertainties by adapting accordingly, and require more changeability at physical as well as logical levels. For this purpose, modern-day manufacturing systems are designed with dynamic resource capabilities, with modular components, so that they can provide the required amount of reconfigurability. From the perspective of "industry 4.0", reconfigurability is vital for the effective adaptation of manufacturing systems in a complex environment. Reconfigurability provides the quick adaptation of these systems along with quick responsiveness towards socio-techno-economic competitiveness. The objective is to respond to modern-day challenges (both external and internal), i.e. mass customization, globalization, product variety management, system reconfiguration management, and reducing the lead time.In this thesis, the design problem of reconfigurable manufacturing systems (RMS) is considered which meets the aforementioned requirements. The goal is to design a responsive system based on two key features modularity and reconfigurability. We study the RMS design problem as, the development of a process plan for a particular part of the part family along with the selection of the system's dynamic resource capabilities to perform that part. This work is divided into three parts: (1) Co-generation of process and setup plan for a part in the reconfigurable environment. The main objective is to develop a new approach to jointly consider the setup and process plan constraints, with consideration of relationships between the operations. (2) Minimisation of reconfiguration effort in process design. We propose a novel performance index of the effort generated by the machines and fixtures reconfiguration, and part transfer. The objective is to ensure better responsiveness and high performance of the designed process plan. (3) Maximisation the utilization of dynamic resource capabilities of RMS design. We consider a RMS design problem for machine selection, where selection of different types of reconfigurable machine tools (RMTs) are carried out for performing the process plan of considered part
Mawissi, Kwamivi. "Modèles de représentation et de définition d'outillages de forme complexe : application à le génération automatique de processus d'usinage". Cachan, Ecole normale supérieure, 1995. http://www.theses.fr/1995DENS0001.
Texto completoHarik, Ramy. "Spécifications de fonctions pour un système d'aide à la génération automatique de gamme d'usinage : Application aux pièces aéronautiques de structure, prototype logiciel dans le cadre du projet RNTL USIQUICK". Phd thesis, Université Henri Poincaré - Nancy I, 2007. http://tel.archives-ouvertes.fr/tel-00173161.
Texto completoL'enchaînement des étapes permettant le calcul de ces fonctions est déterminé. Il comporte :
- une première étape d'enrichissement du modèle géométrique CAO,
- une deuxième étape permettant d'extraire les entités d'usinage élémentaires. Aux faces sont ainsi liées les informations technologiques suivantes : mode d'usinage, directions et outils possibles,
- une troisième étape d'analyse du graphe d'adjacence de la pièce qui détermine les faces pouvant être usinées simultanément.
Ces étapes sont implémentées en CAA® dans un démonstrateur dont la validité est présentée sur quelques exemples. Son degré de robustesse est évalué.
Les apports de ce travail sont relatifs à la notion d'entité élémentaire, d'entité de haut niveau orientée type d'usinage, de caractérisation des extrémités d'élancements et à la définition de fonctions opérateur.
Le mémoire se termine par une synthèse des fonctions qui devraient être implémentées dans le logiciel CATIA afin que le Transformateur devienne un produit industriel.
Kedja, Boualem. "Contribution à la génération automatique des gammes d'usinage en tournage". Lyon, INSA, 1995. http://www.theses.fr/1995ISAL0089.
Texto completoPurpose of the presented work is to find a new automatic elaboration methodology of manufacturing ranges based on a totality of coherent concepts. This problem that concerns the integration to know-how be very complex and strongly coupled held account relative constraints to possible procedures and the diversity of resources. This implies the elaboration of an open system' so as to allow the well-off introduction of specific rules to a given environment. We have not sought to modelize the reasoning of the planner because for each agent corresponds a specific step. By situating at the endorsement of a volumetric modeler oriented object (feature), the researched coherence has been obtained in the framework of a systemic approach considering simultaneously product and specifications, process and methodologies , machines and kits. The generalization of the notion of entity to the different applications) the meter of resources, the introduction of balancing criteria allow the elaboration of an adaptable product to the industrial context diversity. The automatic generation system is realized around a specific inference engine so as to limit the combined explosion by associating several rules under an alone constraint of precedence
Bishani, Bassam. "Contribution à la génération automatique des gammes d'usinage en perçage". Lyon, INSA, 1998. http://www.theses.fr/1998ISAL0083.
Texto completoOur work is a contribution on the automatic generation of process planning studies, for prismatic machined parts. Realising of different types of holes is considered by using cutting tools (punching, laser, etc. . . ). The main objective has been to develop a specific methodology of operation for machining a different type of holes (smooth, multi-diameter,. . . ) by using a volumic solid modeler. After a bibliographic study on Computer-Aided Design (CAD), Computer-Aided Manufacturing (CAM) and Computer Aided Process Planning (CAPP) which is the vital link between design and manufacturing. As a variant CAPP approach cannot cope with the desire for complete manufacturing automatic, the generative approach has been considered, this approach is the logical creation of a process planning from the information available in a manufacturing data base without intervention by the planner. An expert system that encodes machining practice is used to generate drilling sequence. We have established a knowledge-based representation in the form of production rules to define operations sequences and using machine and cutting tools correspond to surface type, dimension tolerance, and roughness. The optimisation of drilling process is studied in detail, where the optimisation signifies minimising the sum of machining travel and set-up times required to perform ail of drilling operations used for producing a different type of holes
Delolme, Laurent. "Optimisation multicritères de gammes d'usinages". Thesis, Université Clermont Auvergne (2017-2020), 2017. http://www.theses.fr/2017CLFAC019.
Texto completoThe objective of this work is to develop a Computer-Aided Process Planning (CAPP) methodology to allow aeronautical subcontractors to face the current productivity and competitiveness problems. To start, a state of the art on the existing CAPP systems is presented and introduce the limits of the current systems. A four-step methodology is then proposed, allowing the user to obtain optimized machining ranges respecting his know-how and experience and introducing innovation. This methodology is based on a representation of the decision-making behavior of the process planners in a given situation as well as the risk of industrialization and broadens the formalization of the performance by taking into account performance criteria other than the machining time or cost. Thus, a state of the art on multicriteria decision-making methods helps to select the method for the aggregation of performance in relation to the industrial problem. After a geometrical and technological description of a mechanical part and the creation by the process planners of elementary machining operations, a genetic algorithm is used to generate optimized ranges. In a final step, the methodology presents the best process plans generated to the process planners and the use of the social choice theory allows to target the most efficient ones to choose, integrating a risk criterion based on tool deflection. This methodology was applied to a Titanium alloy machined landing gear part and allowed a 25% reduction in machining time while increasing reliability. Finally, prospects for improving the decision-making tool at various stages of the methodology are proposed
Tsang, Jean Patrick. "Planification par combinaison de plans : application à la génération de gammes d'usinage". Grenoble INPG, 1987. http://tel.archives-ouvertes.fr/tel-00325043.
Texto completoSpadoni, Michel. "Etude d'un système de génération automatique de gammes de fabrication". Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37601352p.
Texto completoSpadoni, Michel Mutel Bernard. "ETUDE D'UN SYSTEME DE GENERATION AUTOMATIQUE DE GAMMES DE FABRICATION /". [S.l.] : [s.n.], 1987. ftp://ftp.scd.univ-metz.fr/pub/Theses/1987/Spadoni.Michel.SMZ8701.pdf.
Texto completoAmara, Hocine. "Contribution à la génération de gammes d'usinage : intégration de l'homme et approche multi-agents". Nantes, 2002. http://www.theses.fr/2002NANT2087.
Texto completoGasnier, Bénédicte. "Sur un outil interactif de spécification de gammes opératoires en production flexible manufacturière". Lille 1, 1989. http://www.theses.fr/1989LIL10009.
Texto completoCapponi, Vincent. "Les interactions homme-machine dans la génération de gammes d'usinage : application aux pièces aéronautiques de structure". Université Joseph Fourier (Grenoble), 2005. http://www.theses.fr/2005GRE10115.
Texto completoProcess planning is a critical activity to reduce the industrialization lead-time ofmechanical products. Computer Aided Process Planning (CAPP) systems should have reduced it drastically without human intervention, but these systems have reached very limited acceptance in industry. This dissertation focuses on the specifications of a CAPP system for the machining of aircraft structural parts. To improve its acceptance, we propose to integrate the human planner in the decision-loop. First, we define a product-model to handle aircraft parts specificity. Then, a visibility-based method to find the alternatives set-up is proposed. Finally, we carried out an human-computer interaction study in order to help the human decision-making between alternatives plans. We designed and evaluated a demonstrator of interfaces ofthe future system. To conclude, we discuss about assistance strategies for such a CAPP system
Goldschmidt, Ephraïm James Martin. "Gammes et cotation pour le réglage des machines-outils de décolletage". Chambéry, 2009. https://tel.archives-ouvertes.fr/tel-01053861.
Texto completoProduction equipment has undergone significant technical developments in recent decades. The current trend is to minimize the number of setups required to machine a part in order to improve the cycle lime and accuracy. The screw rnachining industry is heavily subject to the problem of meeting increasing production volumes under stronger customer requirements. Unfortunately, methodological tools and software packages have not evolved at the same pace and the indus-trialization of parts of increasing complexity remains a serious problem. However, "academic" in- dustrialization methods do exist, but they were initially designed for conventional part machining out of plots of material and are not adequate when machining parts out of bars, which is the main characteristic of screw machining. The flow method presented in this thesis tackles this problem by providing a systematic approach to the methods technicians, enabling them to sequence the different manufacturing operations into a minimum number of steps and thus; a minimum number of machine halts. To do so, we propose a formal description of the manufacturing process, organizing it in work stations, setups and manufacturing operations. We then propose to organize the manufacturing operations in steps intended either for the initial or periodical setting up of machines, or for their monitoring in production. The creation of a different setting up plan than the monitoring plan seems essential and is consistent with the fact that the setting up and monitoring of machines are often carried out by two different persons in industry, in this case, a setter and an operator. For each of the plans, we determine a set of working dimensions through an innovative approach called the "chain of dimensions of minimal measurement uncertainty". To this set of working dimensions, we propose to add a new set of dimensions that we call "pilot dimensions". These correspond to the parameters on which the operators can act upon in order to correct working dimension deviations. A spreadsheet is then generated for the operator. This spreadsheet will provide the operator with the corrections that need to be carried out on the pilot dimensions based on the deviations measured from the working dimensions for each step of the setting up or monitoring process. Experiments on industrial cases have helped us to validate our approach which has been implemented in an industrialization software package called Copilot Pro®. This research program is the result of the collaboration between the SYMME laboratory of the “Université de Savoie” and the “Centre Technique de l'industrie du Décolletage”, and is also part of the “Tolérancement et Qualité des produits” program of the “Pôle de Compétitivité Arve-Industries Haute-Savoie Mont-Blanc”
Minot, Jacques. "Contribution à l'étude de la reconnaissance de familles de pièces en fabrication mécanique Appplication à la génération de gammes de fabrication /". Metz : Université Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1983/Minot.Jacques.SMZ8309.pdf.
Texto completoBaqai, Aemer. "Co-conception des processus d’usinage et des configurations cinématiques d’un système de production reconfigurable". Paris, ENSAM, 2010. http://www.theses.fr/2010ENAM0010.
Texto completoThis work is based in the domain of the design of manufacturing systems and attempts to respond to the problem statement: "How to optimize the design process of the machining process plans and reconfigurable manufacturing systems, while taking into account: the interactions between processes and resources, the technological constraints imposed by the part to be manufactured"? This response is given via a proposal for the coexploration of the solution space of the process plans and kinematic configurations. A design framework has been formalised which gives a link between the strategic and operational level. With an objective to explore ail solutions at the operational level, an algorithmic approach for the generation of process plans and corresponding machine kinematic configurations of RMS has been formalised, developed, implemented and validated on 3 parts belonging to automobile sector. This approach can be compared to the dynamic constraint satisfaction problem, it exploits the set of possibilities offered by RMS: parallel stru ctures, simultaneous machining. . . The process of generation of process plans is supported by representation of the generated solutions in the form of graphs. For the selection the generated solutions, performance indicators have been defined, structured, and their evaluation approach identified. A particular attention was given to the criterion of quality. An adaptation of the existing approaches was carried out and simulation of geometric deviation in the generated solutions was done. Generated solutions were adapted to be graphically represented and used for the simulation by L1I. This was done to validate the obtained results
Durand, Philippe. "Contributions à la génération et à l'amendement de plans d'actions : application à la conception de gammes d'usinage dans un contexte CIM". Phd thesis, Grenoble INPG, 1988. http://tel.archives-ouvertes.fr/tel-00330034.
Texto completoPatriti, Vincent. "Systèmes de pilotage auto-organisés et gammes distribuées : méthode de conception et application à une machine-outil". Nancy 1, 1998. http://www.theses.fr/1998NAN10008.
Texto completoXia, Qing. "modèles et méthodes pour le génération de processus de fabrication reconfigurables". Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0004/document.
Texto completoConventional manufacturing process planning approaches are inefficient to handle the process planning complexity induced by product variety and manufacturing dynamics. Reconfigurable process planning (RPP) is an emerging CAPP approach targeting to the generation of process plans for a product/part family. This thesis aims to give major contributions to the representation models and generation methods to support reconfigurable process planning at two granularity levels: product family and part family. The proposed approaches for RPP are compatible with an extended concept of product/part family which is defined by using the concept of “domain”. A feature-based product/part variety model is developed to represent the required information for RPP by using modular and platform-based techniques. Mathematical models and graph-based representation models are proposed to describe the reconfigurable process plan at two granularity levels. Based on the representation models, the generation methods and algorithms are then developed for RPP. In addition, a global framework is proposed to describe how the proposed RPP models and methods work together to handle the product/part variety and manufacturing dynamics. To test the feasibility of the proposed models and methods, a gear pump family and an oil pump body family are used as illustrative examples throughout this thesis
Temani, Moncef. "Contribution à la modélisation des processus d'assemblage : élaboration automatique des gammes". Lyon 1, 1985. http://www.theses.fr/1985LYO19003.
Texto completoIdelmerfaa, Zahra. "Méthodologie de génération de la conduite d'un système intégré de production". Nancy 1, 1994. http://www.theses.fr/1994NAN10002.
Texto completoJaballi, Karim. "Contribution à la génération assistée par ordinateur du tolérancement de fabrication 3D". Phd thesis, Ecole Centrale Paris, 2009. http://tel.archives-ouvertes.fr/tel-00704516.
Texto completoHarik, Ramy Farid. "Spécifications de fonctions pour un système d'aide à la génération automatique de gamme d'usinage : application aux pièces aéronautiques de structure, prototype logiciel dans le cadre du projet RNTL USIQUICK". Nancy 1, 2007. http://docnum.univ-lorraine.fr/public/SCD_T_2007_0077_HARIK.pdf.
Texto completoOur PhD work comes within the framework of the USIQUICK RNTL project (www. Usiquick. Com) that aims to answer the needs of some aircraft industries in the domain of structural parts manufacturing that are of an average to high complexity. Automating the manufacturing fixture, process planning and generating the NC programs are the expected results. Our contribution lies in the study of the ‘Transformer’, a module dedicated to enriching the part geometry into one that is adapted to manufacturing. The ‘Transformer’ must supply the necessary information needed by the two other USIQUICK modules: Process planning and Automatic milling path generator. The sequence of steps allowing to compute the different functions is determined. It includes: a first step during which the CAD geometrical model is enriched, a second step during which the different ‘Elementary Manufacturing Features’ are extracted. The faces composing the CAD model are completed by their: milling mode, milling directions and possible milling tools, a last step, where a face adjacency’ graph analysis is proceeded, pointing all the faces that could be milled simultaneously. These steps are implemented using CAA® in a prototype. The validity is presented in some examples. The degree of its robustness is evaluated. The main results of our PhD are: the definition of the ‘Elementary Manufacturing Feature’, high level milling features extractions, thin features identification and the CAPP functions definition. This PhD report ends with a synthesis of the functions that should be implemented in CATIA so that the ‘Transformer’ becomes an industrial product
Cocquempot, Vincent. "Surveillance des processus industriels complexes : génération et optimisation des relations de redondance analytiques". Lille 1, 1993. http://www.theses.fr/1993LIL10053.
Texto completoDiourté, Adama. "Génération et optimisation de trajectoire dans la fabrication additive par soudage à l'arc". Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30213.
Texto completoWire Arc Additive Manufacturing (WAAM) is becoming the primary Additive Manufacturing (AM) technology used to produce medium to large (order of magnitude: 1 m) thin-walled parts at lower cost. To manufacture a part with this technology, the path planning strategy used is 2.5D. This strategy consists in cutting a 3D model into different plane layers parallel to each other. The use of this strategy limits the complexity of the topologies achievable in WAAM, especially those with large variations in curvature. It also implies several start/stop of the arc during its passage from one layer to another, which induces transient phenomena in which the control of energy and material supply is complex. In this thesis, a new manufacturing strategy to reduce the arc start/stop phases to a single cycle is presented. The objective of this strategy, called "Continuous Three-dimensional Path Planning" (CTPP), is to generate a continuous spiral-shaped trajectory for thin parts in a closed loop. An adaptive wire speed coupled with a constant travel speed allows a modulation of the deposition geometry that ensures a continuous supply of energy and material throughout the manufacturing process. The use of the 5-axis strategy coupled with CTPP allows the manufacturing of closed parts with a procedure to determine the optimal closure zone and parts on non-planar substrates useful for adding functionality to an existing structure. Two geometries based on continuous manufacturing with WAAM technology are presented to validate this approach. The manufacturing of these parts with CTPP and several numerical evaluations have shown the reliability of this strategy and its ability to produce new complex shapes with good geometrical restitution, difficult or impossible to achieve today in 2.5D with WAAM technology
Sabourin, Laurent. "L'expertise en conception de gammes d'usinage : approche par entités et propagation de contraintes". Cachan, Ecole normale supérieure, 1995. http://www.theses.fr/1995DENS0004.
Texto completoTapie, Laurent. "Décomposition topologiques des outillages de forge pour la Génération de trajectoires UGV". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2007. http://tel.archives-ouvertes.fr/tel-00254941.
Texto completoBozek, Sébastien. "Génération de maillage automatique pour la simulation tridimentionnelle de procédés de fabrication de circuits intégrés". Lille 1, 2000. http://www.theses.fr/2000LIL10057.
Texto completoGuigue, Alexis. "Fabrication d'horaires dans les Forces armées canadiennes, approche par génération de missions et réduction de réseaux". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ57410.pdf.
Texto completoChalvin, Maxime. "Fabrication additive de tubulures par dépôt de fil robotisé multi-axes : génération et optimisation de trajectoires". Electronic Thesis or Diss., Toulon, 2020. http://www.theses.fr/2020TOUL0010.
Texto completoAdditive manufacturing through Directed Energy Deposition (DED) enables small batches of parts to be rapidly manufactured. However, manufacturing trajectories usually used for the manufacture of overhanging parts require the use of supports, material which is not useful for the finished part and time consuming. If multi-axis trajectories can be used to avoid them, they present generally a heterogeneous local inter-layer distance, thus requiring a variation of the deposition parameters to adapt the layer height ; variation that can be harmful to the mechanical characteristics of the final part. This thesis first proposes a constant local inter-layer trajectory generation method for DED additive manufacturing of tubular parts defined by parametric curves and which can have profile radius variations. The proposed trajectories have been validated by robotized manufacturing trials of polymer parts. Since the rotation about a coaxial deposition tool axis has no impact on the deposit, the use of 6-axis robots offers a redundancy. Using this redundancy, a layer by layer optimization of the trajectory in the robot space is then proposed. In a constrained robot configuration, the trajectory optimization allows the manufacturing of parts that cannot be manufactured in the usual way, and improves the geometrical quality of the parts with a better repeatability
Gendreau, Dominique. "Génération automatique des procédures de pilotage d'une cellule flexible de production". Châtenay-Malabry, Ecole centrale de Paris, 1991. http://www.theses.fr/1991ECAP0207.
Texto completoHassini, Sami. "Qualification multi-critères des gammes d'usinage : application aux pièces de structure aéronautique en alliage Airware®". Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22587/document.
Texto completoThe optimization of machining sequences is not easy because it suffers from two major shortcomings. The first focuses on the adaptability of existing ranges to current production facilities and their evolution over the years to respond to technological developments. The second point concerns the lack of consideration in the mechanical behavior of the part during the development of machining sequence. This thesis addresses these in relation to the FUI OFELIA project. At first, they study the influence of the machining parameters on the deformation of the workpiece. The aim is to predict the mechanical behavior of the part to identify recommendations with minimal distortion. The second issue deals with multi-criteria evaluation of manufacturing ranges. The criteria take into account are the deformation of the workpiece, productivity through a quick estimate of machining time and recyclability of chips produced during machining. On the other hand, we propose a geometric model of the intermediate states of the workpiece during machining in order to both assess the manufacturing recommendations and to drive the simulation calculations of the deformation of the workpiece during machining
Paris, Henri. "Contribution à la conception automatique des gammes d'usinage : le problème du posage et du bridage des pièces". Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10204.
Texto completoBensmaïne, Abderrahmane. "Algorithmes évolutionnaires et méthodes approchées multicritères pour la génération des processus de fabrication dans un environnement reconfigurable". Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0222/document.
Texto completoThe uncertain context of current markets has contributed to the development of manufacturing systems, resulting in systems with different features and principles, trying to meet the changing market demands. Reconfigurable manufacturing system (RMS) is a recent class of systems where machines, machine components and the handling system can be added, modified, deleted or exchanged according to the production needs. RMS combines the high throughput of dedicated manufacturing systems with the customizability of flexible systems. The main component of an RMS is the reconfigurable machine (RMT: Reconfigurable Machine Tool) which has a structure that allows reconfiguration. We focus in this work on CAPP (Computer-Aided Process Planning) to generate effective the process plans in an RMS that take advantage of the high degree of RMT reconfigurability Three problems associated with the function process planning are discussed: (1) the generation of process plans for a single-unit case, where we adapted multi-criteria optimization techniques (NSGA-II, AMOSA) (2) the generation of process plans in the multi-unit case, where we developed simulation based optimization technique, and (3) the integration of process planning and scheduling functions, where we developed a new heuristic aiming to achieve this integration. All the proposed approaches have been validated by numerical experiments, demonstrating their applicability and effectiveness
Bensmaïne, Abderrahmane. "Algorithmes évolutionnaires et méthodes approchées multicritères pour la génération des processus de fabrication dans un environnement reconfigurable". Electronic Thesis or Diss., Université de Lorraine, 2013. http://www.theses.fr/2013LORR0222.
Texto completoThe uncertain context of current markets has contributed to the development of manufacturing systems, resulting in systems with different features and principles, trying to meet the changing market demands. Reconfigurable manufacturing system (RMS) is a recent class of systems where machines, machine components and the handling system can be added, modified, deleted or exchanged according to the production needs. RMS combines the high throughput of dedicated manufacturing systems with the customizability of flexible systems. The main component of an RMS is the reconfigurable machine (RMT: Reconfigurable Machine Tool) which has a structure that allows reconfiguration. We focus in this work on CAPP (Computer-Aided Process Planning) to generate effective the process plans in an RMS that take advantage of the high degree of RMT reconfigurability Three problems associated with the function process planning are discussed: (1) the generation of process plans for a single-unit case, where we adapted multi-criteria optimization techniques (NSGA-II, AMOSA) (2) the generation of process plans in the multi-unit case, where we developed simulation based optimization technique, and (3) the integration of process planning and scheduling functions, where we developed a new heuristic aiming to achieve this integration. All the proposed approaches have been validated by numerical experiments, demonstrating their applicability and effectiveness
Boulahrouf, Abdelhak. "Étude des alliages plomb calcium faiblement alliés en calcium destinés à la fabrication des grilles d'accumulateurs de la nouvelle génération". Nancy 1, 1989. http://www.theses.fr/1989NAN10008.
Texto completoAndurand, Lewis. "Développement d'une méthode de génération de trajectoire versatile pour la réalisation de pièces par procédés DED multi-axes à partir de surfaces facettisées". Electronic Thesis or Diss., Toulon, 2023. http://www.theses.fr/2023TOUL0001.
Texto completoAdditive manufacturing is a category of processes that allows the production of mechanical parts by the adding of material. Directed Energy Deposition (DED) processes can be combined with multi-axis robots and are a promising option to obtain parts with complex structures. However, the path generation methods and the machine structures used remain an issue. With innovations in these areas, the industrial possibilities would increase tenfold.This thesis presents a numerical and systematic path generation method based on meshed surfaces and adapted to DED processes. The method was validated through simulations on minimal triply periodic surfaces and allows the creation of a first deposition path that meets the distance constraint between the part and the tool. This first path can be combined with region prioritization feedback to obtain a final path adapted to the physical warnings provided by the robot, the manufacturing material and the tool
Pechet, Gatien. "Génération de trajectoires pour la réalisation de pièces de grandes dimensions en fabrication additive par dépôt de fil. : Application au secteur naval". Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0015.
Texto completoAdditive manufacturing is characterized by the successive addition of layers to obtain the desired part. Among the many existing processes, WAAM (Wire + Arc Additive Manufacturing) is particularly well suited to the manufacturing of large parts. It is characterized by a supply of heat in the form of an electric arc (produced by a welding generator) and a supply of material in the form of wire, allowing it a deposition rate higher than additive manufacturing processes with supply in the form of powder. To allow the commissioning of functional parts, the geometry of the weld beads and the material health must be controlled. This results in a good coupling between the operating parameters and the toolpath. This thesis work will highlight a methodology in the choice of parameters using experimental designs or numerical simulation by finite elements. Thereafter, we will study the simulation of the trajectories on a virtual environment, which makes it possible to predict the behavior of the device. We will show the importance of the concordance of virtual and real environments and will propose rules to control the kinematic redundancy. Finally, a manufacturing methodology for large parts will be developed. Following the identification of areas with geometric complexity, different manufacturing strategies have been proposed and successfully applied. This work will be illustrated by the production of various demonstrators, notably from the naval field. More specifically, a hollow propeller blade was produced by taking advantage of the capabilities of multi-axial toolpath (6 + 2 axes) and by using the methodology developed in this thesis
Suau, Didier. "Grafcet coloré : conception et réalisation d'un outil de génération de simulation et de commande temps réel". Montpellier 2, 1989. http://www.theses.fr/1989MON20032.
Texto completoSlablab, Abdallah. "Étude de la génération de rayonnement optique de seconde harmonique dans les systèmes nanométriques et fabrication des sondes optiques pour le champ proche". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2010. http://tel.archives-ouvertes.fr/tel-00678485.
Texto completoMirdamadi, Shirin. "Système d’aide à la décision pour la génération des processus d'inspection par la fédération des expertises métier". Thesis, Paris, ENSAM, 2014. http://www.theses.fr/2014ENAM0023/document.
Texto completoIn the current economic and competitive environment, what distinguish the companies is their reactivity to provide increasingly complex products with increasingly diverse needs. To achieve this reactivity despite constraints, integrated engineering approachs have been emerged to better manage and organize the product life cycle. In this context, it is essential to take into account the characteristics' variations and their interdependencies to improve the performance (cost, risk, quality ...). This thesis was devoted to the generation of an optimal inspection plan including process variations monitoring and product variations control. A methodological framework for the co-conception of product control and process monitoring activities has been formalized and validated. This framework allows operational decision-making by the intervention of operational tools and ensures the satisfaction of strategic objectives (cost reduction, improved quality, increased productivity ...). FMEA, KC flowdown, and Activity Based Costing (ABC) were selected following a comprehensive literature review on quality planning and performance improvement. However, these tools present some lack to fill up and therefore are subjected to certain adaptations in order to best fit the needs of the proposed methodological framework. Integration of FMEA and KC flowdown resulted in a new tool called ACDE. As well the adaptation of ABC to estimate the cost of quality by "Quality-Driven ABC" was proposed. The application of these latter has been proposed to limit the inspection planning to “bare essentials activities
Demolliens, Antoine. "Apport de la microscopie électronique en transmission à l'étude des mémoires non volatiles de nouvelle génération". Phd thesis, Université du Sud Toulon Var, 2009. http://tel.archives-ouvertes.fr/tel-00646295.
Texto completoDemolliens, Antoine. "Apport de la microscopie électronique en transmission à l'étude des mémoires non volatiles de nouvelle génération". Phd thesis, Toulon, 2009. https://theses.hal.science/tel-00646295/fr/.
Texto completoMicroelectronic recent developments impose ton increase the speed and integration density of embedded memories. However, getting reliable products first require developing production process, understanding reliability issues, and managing physical analysis of defects. Thus, the work done during this thesis concerns the failure analysis and physical characterisation of non volatile memories by transmission electron microscopy (TEM). Four research subjects have been studied. The first one applied to microstructure degradation of advanced EEPROM cell, produced at STMicroelectronics, after electrical and thermal solicitations. Then, a new charge based storage quasi non volatile architecture called SQeRAM, actually under investigation at STMicroelctronics, was characterised by TEM, in order to get the microstructure of charge storage areas and understand the physical origin of poor retention performances of these devices. Thirdly, a collaboration with the start up Crocus Technology gave us the opportunity to participate to the process development of a new generation of thermally assisted writing magnetoresistive memory (TA-MRAM). Here, different complex magnetic stacks constituting the memorisation element of these devices have been characterised. Finally, the last addressed research axe concerned a new generation of non volatile macromolecular resistance switching memory based on the organo-metallic complex CuTCNQ. In this case, CuTCNQ microstructure and growth in small via interconnections was studied, for different synthesis methods developed by IMEC and Aachen Technical University
Kapusta, Michel. "Génération assistée d'un graphe fonctionnel destiné à l'élaboration structurée du modèle de la partie commande pour les cellules de production flexibles dans l'industrie manufacturière". Lille 1, 1988. http://www.theses.fr/1988LIL10108.
Texto completoJousselin, Baptiste. "Développement d'une méthodologie de génération de trajectoires d'ébauche en usinage 5 axes". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST061.
Texto completoThe complexity of the parts to be manufactured leads to an indispensable recourse to digital media for trajectory planning such as Computer Aided Manufacturing (CAM) software. However, a real imbalance is noted between the wide range of 5-axis finishing operations currently available in CAM software and the lack of solutions for the roughing sequence, which can though improve the productivity of the overall machining process.This thesis manuscript therefore tackles the development of a simultaneous 5-axis toolpath planning methodology for the roughing sequence. Guiding curves are used to create a geometric path which allows the tool to travel the whole volume to remove, and thus ensure a maximum material removal. Guiding curves are built automatically from the numerical model of the workpiece and implemented algorithms for calculating curve and surface offsets using vector methods or scalar fields. The orientations of the tool along the guiding curves are then determined by a Sequential Quadratic Programming algorithm, according to criteria of productivity, tool behaviour, and surface quality, by searching for a specific parameterization of the guiding curves.The implementation of the 5-axis roughing strategy in the TopSolid CAM software enabled machining tests with toroidal cutter, which allowed the strategy's validation on typical parts of the aerospace industry
Le, Berre Maël. "Dépôt de matière et formation de motifs sur une surface solide : Méthodes microfluidiques, Contrôle par forces capillaires et Génération de vésicules géantes". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2009. http://tel.archives-ouvertes.fr/tel-00388698.
Texto completoDans la première partie du manuscrit, nous présentons une méthode originale, la micro-aspiration, permettant de réaliser des assemblages réversibles de canaux microfluidiques sur un substrat et servir à guider les liquides. Nous avons étudié les propriétés de ces systèmes avec des modèles physiques simples et appliqué ces phénomènes à la micromanipulation de liquides, le dépôt de protéines à diverses concentrations sur un substrat, la fabrication de motifs de polymères, nanoparticules, gels, etc.
Dans la seconde partie, nous avons exploré des nouvelles méthodes de dépôt de films de phospholipides multicouches sur des substrats solides et les avons appliqués à la fabrication de vésicules unilamellaires géantes de taille contrôlée. Tout d'abord, l'adaptation de techniques conventionnelles (micro-contact printing, moulage, etc.) a permis d'obtenir des motifs de phospholipides de taille micrométrique. Les dépôts ont ensuite été réalisés par retrait d'un ménisque en situation d'évaporation (assemblage capillaire). Nous avons identifié deux régimes de dépôt en fonction de l'importance relative des forces visqueuses et de l'évaporation, permettant un contrôle de l'épaisseur du film jusqu'à 200 nm à la bicouche près. L'émergence d'instabilités de mouillage ou le guidage sur micro-structures ont permis en outre de réaliser des motifs variés. En utilisant des substrats comme électrodes, ces différents niveaux d'organisation ont permis d'obtenir par électroformation des vésicules unilamellaires géantes de taille contrôlée. L'ensemble de ces travaux ouvre de nouvelles voies à la réalisation de surfaces et de motifs micrométriques d'intérêt biologique.