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espanolEn este articulo se presenta una forma corregida del modelo de Shaw y Ogford para brocas con geometria mejorada y ausencia de bisel transversal. Se ha realizado un ajuste de las expresiones que conforman el modelo y se han determinado los parametros experimentales para estimar la fuerza de avance y el par de taladrado en aluminio Al-2011. Los resultados obtenidos mediante el modelo corregido se han comparado con valores estimados mediante el modelo de la presion especifica de corte. Finalmente, se muestra que el modelo de Shaw y Ogford puede ser aplicado en brocas con geometria mejorada mediante el ajuste del parametro asociado al bisel transversal. EnglishThis article presents a corrected form of the Shaw and Ogford model for Crills with improved geometry and absence of the edge chisel. Adjustments of the egpressions that compose the model have been made, and also the experimental parameters have been Cetermined in order to estimate the thrust force and the torque of the Crilling in aluminum Al-2011. The results obtained through the corrected model, have been compared with estimated values through the specific cutting pressure model. Finally, it is proved that the Shaw and Ogford model can be applied to Crills with improved geometry through the adjustment of the parameter associated to the edge chisel.

Modelo de Shaw y Oxford aplicado a un Proceso de Taladrado que Utiliza Brocas Helicoidales con Geometría Innovada y Ausencia de Bisel