The Dynamic And Optimization Of Micro-Milling Machine

Due to miniaturization, the machine tools are required to have high rigidity and good dynamic properties to ensure the process accuracy. Therefore, dynamic analyses are necessary.In this paper, for a small milling machine developed by our lab, the static and dynamic analyses are performed and the optimizations of the key components of the machine are carried out.The static and dynamic characteristics of the Gantry and spindle are analyzed firstly considering the effects of the flexible joints. The interface parameters are obtained through theoretical methods. The dynamic behaviors of the key components are investigated by changing the stiffness of the bolt joints.Based on the analyses, the machine system is optimized by topological Improvement using ANSYS. Also, a new design scheme is proposed. The sizes of the new meso scale milling machine are reduced and the rigidity is enhanced. This study can provide foundations for developing the next generation of the miniaturized machine tool.