本文在试验研究的基础上,分析了西湖牌Z512—2台钻的噪声频谱,计算了台钻各主要声源的频率。通过与噪声频谱图对照,确定了台钻的主要噪声源是主轴的滚动轴承、主轴高速回转的动不平衡、电机和罩壳。此外,对台钻的降噪问题作了初步探讨。 Based on the experimental study, this paper analyzes the noise spectrum of the Z512-2 bench drill of Xihu brand and calculates the frequency of each main sound source of bench drill. By contrast with the noise spectrogram, it is confirmed that the main noise sources of the bench drill are the rolling bearing of the main shaft, the unbalanced movement of the main shaft rotating at high speed, the motor and the housing. In addition, the issue of noise reduction for bench drilling was explored.