Surface texture analysis for ultra-precision flycutting machining based on the dynamic characteristics of machine tools

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (18) : 196-202.

YANG Xu1,2, AN Chenhui2, SUN Zhiji1,2, WANG Zhenzhong1, PENG Yunfeng1, WANG Jian2

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Abstract

Ultra-precision flycutting is widely used to machine soft and brittle plane optical elements, and the controllability of micro surface texture affects the performance of the element directly.The multi-scale wavelet decomposition was used to detect the wave feature of the optical element machined by flycutting machine tool, and the frequency and percent of the waves were achieved.The relevant modals of those waves were found by the finite element analysis and the response test of the spindle system.Particularly, online vibration test and machining experiments were conducted to verify the factor bringing about the micro surface texture on the element.The results show that the micro surface texture at a space period of 17 mm is the most prominent and will make worse observably the accuracy and application of the element, which is caused by the response of the spindle system during the machining process.In addition, modifying the structure of spindle system can make a difference on the amplitude and frequency of the wave.

Key words

ultra-precision flycutting / wavelet decomposition / surface texture / finite element analysis / vibration test

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YANG Xu1,2, AN Chenhui2, SUN Zhiji1,2, WANG Zhenzhong1, PENG Yunfeng1, WANG Jian2. Surface texture analysis for ultra-precision flycutting machining based on the dynamic characteristics of machine tools[J]. Journal of Vibration and Shock, 2016, 35(18): 196-202

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