Dynamic analysis of an integrated Micro-End mill spindle

Abstract

In recent years, demand for exact three-dimensional (3D) microscale features has been from various sectors, including the production of medical devices, military/defense, aerospace, electronics and consumer goods. Renewable chatting is an unpredictable phenomena during the micro-machining phase that results in low quality, tool wear and injury. Because of its high rotational speed, micro-cutting operations often undergo chatter behaviour. Different factors, including variations in the rigidity of the loads, gyroscopic impact should be considered for the spindle dynamic. Dynamics greatly affect the stability of the cutting process and the composition of the tool also influences the dynamics of the tool. Dynamics of the tooltip are influenced by the part of the tool because of its mode-interactions. A model of micro spindle device for machining stability is currently considered in this work. The Timoshenko beam principle is used as part of a short and thick beam style systems on each part of the micro-tool to understand shear deformation and rotary inertia. A comprehensive, complex model of the revolving micro end mill is developed with the extended Hamilton principle. The method of micro-milling is modelled on a two degree system of independence, which considers the modal dynasty of the tool-holder-spindle installation and the micro-milling power. The cuts are modelled as a function of the uncut instantaneous chip thickness, largely influenced by the radius of the tool edge and tooth feeds.