Title:
MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2023/176160
Kind Code:
A1
Abstract:
The present invention comprises: a current detection unit that detects a plurality of current values input to a first servo motor and a second servo motor; a storage unit that stores changes over time in a plurality of normal-time current values input to the first servo motor and the second servo motor in a predetermined step among a series of tool replacement steps which are performed with a rotary tool device and an automatic tool replacement device; and a determination unit that determines whether or not the predetermined step is being performed normally by comparing the plurality of current values detected by the current detection unit in the predetermined step with the changes over time in the plurality of normal-time current values.
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Inventors:
KOTAKE KYOTA (JP)
NAITOH YOSHIHIKO (JP)
NAITOH YOSHIHIKO (JP)
Application Number:
PCT/JP2023/002239
Publication Date:
September 21, 2023
Filing Date:
January 25, 2023
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
International Classes:
B23Q3/155; B23Q17/00; G05B19/18
Foreign References:
| JP2021070103A | 2021-05-06 | |||
| JPH05305540A | 1993-11-19 | |||
| JPH05345261A | 1993-12-27 | |||
| JPS61252040A | 1986-11-10 | |||
| JP6962632B1 | 2021-11-05 | |||
| JP2000094253A | 2000-04-04 | |||
| JP2006082154A | 2006-03-30 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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