Design and Computational Optimization of Elliptical Vibration-Assisted Cutting System With a Novel Flexure Structure

执行机构 振动 固有频率 铰链 遗传算法 机械工程 发电机(电路理论) 联轴节(管道) 机床 工程类 结构工程 计算机科学 声学 量子力学 电气工程 机器学习 物理 功率(物理)
作者
Jinguo Han,Jieqiong Lin,Zhanguo Li,Mingming Lu,Jianguo Zhang
出处
期刊:IEEE Transactions on Industrial Electronics [Institute of Electrical and Electronics Engineers]
卷期号:66 (2): 1151-1161 被引量:28
标识
DOI:10.1109/tie.2018.2835425
摘要

This paper reports on mechanical design, optimization, and experimental testing of a novel piezo-actuated elliptical vibration-assisted cutting (EVC) system constructed by flexure hinges. The stroke and natural frequency were analyzed based on the theoretical modeling. An enhanced central composite design was chosen as the design of experiments methodology to reduce the modeling error, and a nondominated sorted genetic algorithm-II (NSGA-II) was adopted for structure optimization. The optimized EVC generator was manufactured and experimentally tested to investigate practical properties of the proposed EVC system. It shows that the stroke of input end can reach to 30 μm with a motion resolution of 10 nm, and the first natural frequency can reach to 2600 Hz without considering the manufacturing error. Besides, a relatively small cross-axis coupling ratio (within 0.21%) can be effectively obtained. The developed EVC system is advantageous not only to being equipped with machine tools with various configurations, but also to easily achieving arbitrary vibrations in three-dimensional space through two actuators, which is especially important for the generation of complex structured surfaces. With this paper, it is of great significance to promote industrial application of EVC techniques.
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