Browsing by Author "De Lacalle, Luis Norberto López"
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Item Eco-efficient and highly productive machine tools by means of an holistic eco-design approach(2010) Zulaika, Juan Jose; Dietmair, Anton; Verbeeten, Wilco; Campa, Francisco Javier; De Lacalle, Luis Norberto López; MAQUINASMachinery manufacturers are facing the challenge of designing machine tools that are productive, accurate and reliable and that at the same time consume the least possible amount of material and energy resources. In view of this, this paper presents a multidisciplinary methodology for designing milling machines that achieve a high level of productivity while at the same time ensuring high machining quality and less energy consumption during their use phase. Following this methodology, an eco-productive milling machine has been designed and manufactured which, combining different technologies (light materials, active vibration damping system etc.), has managed to reduce the inertias involved in servo-drives by over 50%, with a corresponding reduction in energy consumption, whereas the productivity of the machine - measured in terms of metal removal rate- has been increased by 100% in such a way that productivity and eco-efficiency have been combined in a single machine: the eco-productive milling machine.Item Proceso de mecanizado fiable mediante uso intensivo de modelización y monitorización del proceso: Enfoque 2025(2018-11) González-Barrio, Haizea; Cascón-Morán, Itxaso; Ealo, Jon Ander; Santos-Barrena, Fernando; Ostra-Beldarrain, Txomin; Cuesta-Zabaljauregui, Mikel; Madariaga-Zabala, Aitor; Arrazola-Arriola, Pedro; De Lacalle, Luis Norberto López; FABRIC_INTELThis paper covers three significant aspects. Firstly, a global approach to manufacture high-added value components is presented.. This process involves a holistic perspective for the entire process: from design conception to market implementation. It needs to be emphasized that the manufacturing process implies a global challenge in term of modeling and systems integration. Moreover, particular progresses in programming, modeling, measuring, monitoring and customers´ quality requirements involved a global improvement in the mentioned cycle. Secondly, inside the different defined stages there are several developments of industrial interest.. On the one hand, a cutting forces predictive model implies parameters optimization in terms of swarf section (feed,axial and radial depth of cut). On the other hand, modeling the finishing process to determine thermal load and induced stresses, leads to the possibility of limiting the cutting speed (Vc) adequately to the process specifications. Finally, in-situ monitoring collects information that indicates machining program issues or efforts out from desired levels. Moreover, monitoring would be able to predict batch production threshold value limits. In order to apply described approach, an aeronautical industry high-added value component was selected as demonstrator. Defined component consists of a single blade of Inconel 718 with thin walls, generated by Selective Laser Melting (SLM) additive process. Results showed that applying predictive models inside a global vision implied an adequate control of the process (spindle loads and unexpected cutting forces). This ensures in a further future a stable production of this type of components, such as Integral bladed rotors, coming from additive manufacturing.