This paper uses noise spectrum analysis to test vibration noise of hanging round at different speeds of C630 lathe headstock, analyzes frequency components of different vibration situations and its generation mechanism, has a guiding role for controlling high-frequency noise.%本文采用噪声频谱分析的方法对C630车床床头箱挂轮在不同转速的振动噪声进行测试，分析了不同振动情况的频率成分及其产生机理，对控制高频噪声有一定的指导作用。
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