Fabrikazio gehigarri eta digitalizazio bidezko zulagailu aeronautikoaren diseinu optimizazioa

Abstract

Metal Additive Manufacturing has established itself as one of the most promising alternatives for the development of new components thanks to its ability to obtain complex geometries, customized designs, and functional characteristics. For this reason, the present work has analyzed the capacity of additive manufacturing to optimize the design of the casing of an industrial drill for aeronautical use. The motivation of the research lies in the need to control the temperature of the drill and keep it below admissible values, which allows its continuous use and thus increase the productivity of the operation. To develop a functional and optimized design, the behavior of the drill is digitized using ANSYS Workbench 2021-R2 software, and to ensure the validity of the digital model, a precise methodology is followed. In the first step, the thermal behavior of the different types of surfaces (flat, reticular, gyroid, lattice, etc.) is characterized to determine the heat dissipation capacity of each of them. Subsequently, in a second step, the thermal behavior of the original drill is simulated to characterize the internal heat source and its thermal behavior. With all this knowledge, a new design of the drill casing is proposed based on the results of the simulations: maintaining the functionality, but improving the cooling capacity. Once the new design is defined, it has been fabricated using laser Powder Bed Fusion (L-PBF) technology and its correct operation has been experimentally validated.