CHATTER VIBRATION SUPPRESSION METHOD AND CHATTER VIBRATION SUPPRESSION SYSTEM

摘要

To provide a chatter vibration suppression method allowing for easy reading of a stripe spacing of chatter patterns left on a worked surface.SOLUTION: A chatter vibration suppression method is provided for suppressing chatter vibration occurring in the cutting work, in a machine tool rotating a tool and performing the cutting work of a workpiece. The chatter vibration suppression method includes a two-dimensional discrete Fourier transform analysis method comprising: a step (S102) of photographing a worked surface of the workpiece, and generating image data of chatter patterns; a step (S103) of performing two-dimensional discrete Fourier transform on the image data; a step (S104) of selecting a peak of power spectrum obtained by two-dimensional discrete Fourier transform, steps (S105, S106) of calculating the striped longitudinal intervals of chatter patterns from the frequency of the selected peak; and steps(S113, S114) of calculating the chatter frequency and the phase difference of chatter vibration from the calculated longitudinal intervals.SELECTED DRAWING: Figure 3