A chatter vibration detection method includes acquiring vibration data of a tool (4) at a time of machining a workpiece at a predetermined sampling period (Δt), calculating an autocorrelation coefficient (Rxx′) corresponding to a time required for a cutting edge (4a, 4b) to contact the workpiece (W) several times based on acquired time series vibration data and calculating a period (Tx) of characteristics of the calculated autocorrelation coefficient (Rxx′), and deciding that chatter vibration occurs when a contact period (T1) at which the cutting edge (4a, 4b) contacts the workpiece (W) is not an integral multiple of the calculated period (Tx).
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机译：一种颤振检测方法，包括在以预定采样周期（Δt）对工件进行加工时获取工具（ 4 ）的振动数据，计算与时间相对应的自相关系数（Rxx'）。切削刃（ 4 a， 4 b ）接触工件（W）所需的次数对获取的时间序列振动数据进行计算，并计算所计算的自相关系数（Rxx'）的特征的周期（Tx），并确定切削时的接触周期（T 1 ）发生颤动边缘（ 4 a， 4 b ）接触工件（W）不是计算出的整数倍周期（Tx）。
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