In addition to the dynamic characteristics of the machine tool, cutting conditions significantly influences the vibration of the cutting system and mid-frequency waviness of the workpiece surface in ultra-precision machining (UPM). In this work, the effects of cutting conditions on machining vibration and surface waviness were investigated by high-speed micro-planning experiments. The origin of vibration and waviness were elucidated by frequency-domain processing of the vibration signal and surface waviness analysis. The dynamic characteristics of machine tool are determined using modal test and analysis. The results revealed that the cutting force has different contributions to the workpiece vibration and tool vibration. In the time domain, distinct differences can be found in stability and attenuation of various waviness components. The divergent effects of cutting force components in different vibration forms are confirmed through a novel cutting force model of micro-planing. The investigation can further reveal the formation mechanisms of cutting system vibration and surface waviness during the micro-cutting process, which can provide practical guidance for suppressing mid-frequency waviness on machined surfaces.

中文翻译：

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机床动态特性与切削工况耦合对切削过程振动及高速微刨表面中频波纹度的影响

除了机床的动态特性外，切削条件对超精密加工（UPM）中切削系统的振动和工件表面的中频波纹度也有显着影响。在这项工作中，通过高速微刨削实验研究了切削条件对加工振动和表面波纹度的影响。通过振动信号的频域处理和表面波纹度分析阐明了振动和波纹度的根源。通过模态试验和分析确定机床的动态特性。结果表明，切削力对工件振动和刀具振动有不同的贡献。在时域中，各种波纹分量的稳定性和衰减存在明显差异。通过一种新颖的微刨削切削力模型证实了不同振动形式下切削力分量的不同影响。该研究可以进一步揭示微切削过程中切削系统振动和表面波纹度的形成机制，为抑制加工表面中频波纹度提供实用指导。