Modal Analysis of Micro-milling Cutter's Different Extended Length based on ANSYS

• 1、Mechanical Engineering Faculty of Liaoning Institute of Science and Technology, LiaoNing BenXi 117004
• 2、 Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology

Abstract： Obvious difference may occur in tool life and machined surface quality when micro-milling cutter use different extended length in micro milling process. It is mainly known as that the different extended length can lead to distinct vibration's model and frequencies distribution. In order to learn about the rule that how extended length affect the vibration's model and frequencies distribution of the cutter, this paper conducts an experiment which to study the inherent frequency, vibration's model and change rule under various extended length. Use ANSYS to establish the micro-cutter's finite element model, use free meshing and set density meshing reasonable to make sure the model reliable. During this research, the first six ranks' inherent frequency and modal shapes of four different extended lengths have been analyzed and the result can make a reference for the choice of cutting speed.

Keywords： micro milling cutter modal analysis finite element method extended length