本文对剁锉机噪声进行了实测及谱分析，识别出该机主噪声源为凸轮杠杆机构和剁刀剁削工件处。

The measurements and the spectral analysis of noise for a kind of file cutting machines showed that the main noise of the machine was from the cam-lever mechanism and the cutting place.

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系统的控制信号输入方式借鉴电液比例阀方案，采用凸轮杠杆机构，从而利用了凸轮容易实现任意函数关系转换的优点。

Imitating the project of electrical and hydraulic proportional valve, a CAM mechanism is adopted to input and convert the signal of crane arm's radius changing.

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