ANOMALY SENSING DEVICE, ANOMALY SENSING METHOD, AND COMPUTER PROGRAM

    公开(公告)号:EP4056298A1

    公开(公告)日:2022-09-14

    申请号:EP20884338.3

    申请日:2020-10-30

    IPC分类号: B22D17/32 B29C45/76 G01M13/02

    摘要: An abnormality detection apparatus for detecting an abnormality of a ball screw provided in an injection molding machine includes a current sensor configured to detect an alternating current of a motor for applying a driving force to the ball screw; and a computation unit configured to detect an abnormality of the ball screw based on information related to a distribution of frequency components obtained by frequency analysis of an alternating current detected by the current sensor, and information related to a distribution of frequency components obtained by frequency analysis of an alternating current detected when the ball screw, which is normal, operates.