Manufacturing Technology 2014, 14(4):643-650 | DOI: 10.21062/ujep/x.2014/a/1213-2489/MT/14/4/643

Dynamic Analysis for High-speed Cutters of Five-axis CNC Milling Machine

Jianmin Xu1, Lizhi Gu1, Shanming Luo2
1 College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021. China
2 School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024. China

Cutter vibration characteristics of five-axis milling machine in high-speed milling process were studied. Finite Element Modal Analysis for high-speed cutters with different parameters is conducted using finite element software.The impact of tooth number, extended length, diameter and material of milling cutter on the mode shapes and natural frequencies of milling cutter is researched in detail. Harmonic response curves of High-speed cutter under different frequency are calculated. Based on the response curve, the resonance frequency range of high-speed cutter is obtained in order to achieve high-precision milling and longer life of the tool. Analysis shows that: mode shapes of milling cutter are divided into strong vibration mode shapes and weak vibration mode shapes and its natural frequency become smaller with the increase of the cutter teeth number. Natural frequency of milling cutter decreases with the increase of extended length of milling cutter. The number of strong vibration mode is smaller with the increase of milling cutter diameter so that the milling cutter with large diameter can play a role of anti-vibration. Natural frequency of the high-speed steel cutter is lower than that of the diamond and carbide cutter. This research provides theoretical basis for the design of high speed milling cutter and reducing milling chatter.

Keywords: High-speed cutter, Vibration characteristics, Modal shape, Harmonic response analysis

Published: December 1, 2014  Show citation

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Xu J, Gu L, Luo S. Dynamic Analysis for High-speed Cutters of Five-axis CNC Milling Machine. Manufacturing Technology. 2014;14(4):643-650. doi: 10.21062/ujep/x.2014/a/1213-2489/MT/14/4/643.
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