Title:
MACHINE TOOL, CHUCK GRIPPING FORCE DETECTION METHOD, AND CHUCK FASTENING AMOUNT SETTING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/029338
Kind Code:
A1
Abstract:
Provided is technology which enables suitable control of a chuck gripping force. In this machine tool comprising a main shaft provided with a chuck for gripping a workpiece, when an open/close mechanism has performed a closing operation on the chuck such that the chuck enters a closed state from an open state, a gripping force of the chuck on the workpiece in the closed state is acquired on the basis of the magnitude of a difference between a first time taken from when a control unit emits a control signal for the closing operation to the open/close mechanism to when a sensor detects that the chuck is no longer in the open state, and a second time taken from when the control unit emits a control signal in an open/close period to when the sensor detects that the chuck has entered the closed state.
Inventors:
SUZUKI TOSHIYUKI (JP)
Application Number:
PCT/JP2023/026458
Publication Date:
February 08, 2024
Filing Date:
July 19, 2023
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
International Classes:
B23B31/00; B23B31/10; B23Q17/00
Foreign References:
| JP2008246610A | 2008-10-16 | |||
| JP2020193649A | 2020-12-03 | |||
| JP2005324277A | 2005-11-24 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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