基本信息:
- 专利标题： ANOMALY SENSING DEVICE, ANOMALY SENSING METHOD, AND COMPUTER PROGRAM
- 申请号：EP20884338.3 申请日：2020-10-30
- 公开(公告)号：EP4056298A1 公开(公告)日：2022-09-14
- 发明人： OCHIIWA, Takashi , MITANI, Soma , KAWAKITA, Masato
- 申请人： The Japan Steel Works, Ltd.
- 申请人地址： JP Tokyo 141-0032 11-1, Osaki 1-chome, Shinagawa-ku,
- 当前专利权人： THE JAPAN STEEL WORKS, LTD.
- 当前专利权人地址： THE JAPAN STEEL WORKS, LTD.
- 代理机构： Cabinet Beaumont
- 优先权： JP2019201763 20191106
- 国际公布： WO2021090766 20210514
- 主分类号： B22D17/32
- 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.