Title:
異常検知装置、異常検知方法及びコンピュータプログラム
Document Type and Number:
Japanese Patent JP7306968
Kind Code:
B2
Abstract:
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.
Inventors:
Ochiiwa Takashi
Satoma Mitani
Saint Kawakita
Satoma Mitani
Saint Kawakita
Application Number:
JP2019201763A
Publication Date:
July 11, 2023
Filing Date:
November 06, 2019
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B29C45/76; B22D17/32; B22D18/02; B22D18/08; G01M13/02
Domestic Patent References:
| JP4084728A | ||||
| JP2018202706A | ||||
| JP2017194371A | ||||
| JP2015111113A |
Attorney, Agent or Firm:
Hidehito Kono
Norio Kawano
Norio Kawano
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