ANOMALY DETECTION DEVICE, MACHINE TOOL, ANOMALY DETECTION METHOD, AND PROGRAM

摘要

Provided is an anomaly detection device for a machine tool comprising a blade tool for drilling, a first driving unit for axially rotating said blade tool, and a second driving unit for moving said blade tool in the Z-axis direction, which is the axial direction of the blade tool. The anomaly detection device comprises: a time series data-acquiring unit for acquiring object time series data, which is time series data on the movement load of the blade tool in the Z-axis direction during drilling; an evaluation value-deriving unit for deriving an evaluation value, which represents the degree of resemblance between at least a portion of the acquired object time series data and at least a portion of reference time series data that can be considered to be normal movement load time series data, using singular spectrum transformation; and an anomaly-determining unit for determining the presence or absence of an anomaly of the machine tool on the basis of the derived evaluation value.