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Detecting imbalance of a rotary mechanism in ultra precision diamond turning process

机译：检测超精密钻石转动过程中旋转机构的不平衡

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摘要

In this paper, a method for detecting imbalance in a rotary mechanism for a micro-scale machining process is presented. A linear regression model of the spindle unbalance degree in ultra-precision diamond turning process is proposed. The suitability of a single-input/single-output model is assessed directly, using vibration signals measured on an ultra-precision lathe. The model input is the harmonics power ratio related to the spindle vibration. The nanometric displacement of the rotation axis caused by this vibration is then estimated, according with the proposed method. Harmonics due to unbalance on the spindle are detected using a harmonics sequence detection algorithm, that is applied to the vibration spectral data. Brief explanation of the diamond turning process and problems caused by vibrations generated due to the imbalance of the spindle, are also presented. The effectiveness of the proposed method is corroborated in different situations.
机译：本文介绍了一种在用于微级加工过程的旋转机构中检测不平衡的方法。 提出了超精密金刚石转动过程中主轴不平衡度的线性回归模型。 使用在超精密车床上测量的振动信号直接评估单输入/单输出模型的适用性。 模型输入是与主轴振动相关的谐波功率比。 然后根据所提出的方法估计由该振动引起的旋转轴的纳米置换。 使用谐波序列检测算法检测到主轴上不平衡的谐波，其应用于振动谱数据。 还介绍了钻石转动过程的简要说明和由主轴不平衡导致的振动引起的问题。 所提出的方法的有效性在不同情况下得到证实。

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