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一、引言 车床在加工时会产生振动并辐射出噪声,这不仅不同程度地影响加工质量和设备寿命,而且其噪声还会污染环境、影响操作者的健康。有关切削振动和噪声机理目前已有一些研究,鉴于机理的复杂性和实验条件的限制,许多方面还有待于进一步探讨。随着数控技术的发展和机床传动系统的大大简化,空载噪声会得到明显的抑制,进而切削振动和噪声的影响会更加突出。由此可见,研究切削过程以及有关结构(如工件、刀具和刀架系统)的动态特性,对于减振降噪、可靠生产是具有深远意义的。
I. INTRODUCTION The lathe will generate vibration and radiate noise when processing. This not only affects the processing quality and equipment life to varying degrees, but also the noise will pollute the environment and affect the operator’s health. There are some researches on the mechanism of cutting vibration and noise. Due to the complexity of the mechanism and the limitation of the experimental conditions, many aspects need to be further explored. With the development of numerical control technology and greatly simplified machine drive system, no-load noise will be significantly inhibited, and then the impact of cutting vibration and noise will be more prominent. It can be seen from this that studying the dynamic characteristics of the cutting process and related structures (such as workpieces, tools and tool carriers) is of far-reaching significance to vibration reduction, noise reduction and reliable production.