| FFT and Wavelet-Based Analysis of the Influence of Machine Vibrations on Hard Turned Surface Topographies |
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| 作者姓名： | 李好胜 吴甦 Hubert Kratz |
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| 作者单位： | Department of Industrial Engineering Tsinghua University，Department of Industrial Engineering Tsinghua University，Laboratory for Machine Tools and Production Engineering (WZL) RWTH Aachen University of Technology Aachen 52074 Germany，Beijing 100084 China，Beijing 100084 China |
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| 基金项目： | Supported by the DAAD (German Academic Exchange Service) |
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| 摘 要： | With hard turning, which is an attractive alternative to existing grinding processes, surface quality is of great importance. Signal processing techniques were used to relate workpiece surface topography to the dynamic behavior of the machine tool. Spatial domain frequency analyses based on fast Fourier trans- form were used to analyze the tool behavior. Wavelet reconstruction was used for profile filtering. The re- sults show that machine vibration remarkably affects the surface topography at small feed rates, but has negligible effect at high feed rates. The analyses also show how to control the surface quality during hard turning.
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| 关 键 词： | 表面形貌学 快速傅里叶变换 子波 机械振动 |
| 收稿时间： | 24 April 2006 |
| 修稿时间： | 2006-04-24 |
FFT and Wavelet-Based Analysis of the Influence of Machine Vibrations on Hard Turned Surface Topographies |
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| LI Haosheng,WU Su,Hubert Kratz.FFT and Wavelet-Based Analysis of the Influence of Machine Vibrations on Hard Turned Surface Topographies[J].Tsinghua Science and Technology,2007,12(4):441-446. |
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| Authors: | LI Haosheng WU Su Hubert Kratz |
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| Abstract: | With hard turning, which is an attractive alternative to existing grinding processes, surface quality is of great importance. Signal processing techniques were used to relate workpiece surface topography to the dynamic behavior of the machine tool. Spatial domain frequency analyses based on fast Fourier trans- form were used to analyze the tool behavior. Wavelet reconstruction was used for profile filtering. The re- sults show that machine vibration remarkably affects the surface topography at small feed rates, but has negligible effect at high feed rates. The analyses also show how to control the surface quality during hard turning. |
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| Keywords: | surface topography fast Fourier transform (FFT) wavelet hard turning machine vibration |
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