The Finite Element Analysis Of Solid Carbide End Mill

Because of complex structure, traditional designing methods can not be used to do intensity analysis,stiffness analysis and stress analysis precisely for solid carbide end mill. In the process of CAD for solid carbide end mill,the tool is calculated by means of finite element analysis method, and the reasonability of the tool geometric parameters is studied in the view of intensity,stiffness and stress. We will get the optimal tool geometric parameters and improve cutting performance ,meanwhile meet the requirement of cutting and the goal of minimum deformation,maximum stiffness.A 3D milling force model which is suitable for milling was established based on geometric model of solid carbide end mill.Static analysis and modal analysis for the model were carried on by finite element analysis software ANSYS. Force condition,inherent vibration frequency and inherent vibrational mode of solid carbide end mill were studied under different milling condition (milling depth,feed per tooth,overhanging length).The main conclusions and results are as follows.Firstly,the solid simulation model of solid carbide end mill which was established by Solidworks was analyzed by finite element analysis. The results show that with the other conditions unchanged, both the deformation and stress of solid carbide end mill increase with the increasing of milling depth,and the rang and trend are of the same nearly. The maximum equivalent stress and maximum deformation of solid carbide end mill increase linearly with the increasing of milling depth and feed per tooth nearly, the relatively larger stress present at the location of cantilever and edge of milling cutter,both the deformation and stress increase with the increasing of feed per tooth by different rang, because the later is larger than the former.Secondly, by modal analysis for solid carbide end mill solid model ,the results show that under the condition of constant overhanging length, the first order inherent vibration frequency is close to the second order inherent vibration frequency for solid carbide end mill while the difference for the third inherent vibration frequency and the forth order inherent vibration frequency is relatively large and the second order inherent vibration frequency is different to the third order inherent vibration frequency obviously. Under the different overhanging length, inherent vibration frequency from the first order inherent vibration frequency to the forth order inherent vibration frequency increase with overhanging length decreasing.