Title:
SCREW DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/261021
Kind Code:
A1
Abstract:
According to the present invention, an axial tension of a screw which is generated by screw driving is estimated. A control unit (31) applies a predetermined torque generated by a rotation axis servomotor (10) to a screw in a rotation direction where a screw is driven, and thereafter releases the torque. The control unit (31) then estimates an axial tension of the driven screw based on fluctuation of a rotation position of the rotation axis servomotor (10) which occurs due to the release of the torque.
Inventors:
SUGIOKA MASAYUKI (JP)
TSUKIKAWA MASAYOSHI (JP)
MIYAMOTO KOTA (JP)
TSUCHIKAWA KENTO (JP)
SAKAMOTO YUKI (JP)
TSUKIKAWA MASAYOSHI (JP)
MIYAMOTO KOTA (JP)
TSUCHIKAWA KENTO (JP)
SAKAMOTO YUKI (JP)
Application Number:
PCT/JP2021/008424
Publication Date:
December 30, 2021
Filing Date:
March 04, 2021
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
B23P19/06; B25B23/14
Foreign References:
| JP2004291217A | 2004-10-21 | |||
| JP2020093319A | 2020-06-18 | |||
| JPH03107138U | 1991-11-05 | |||
| JPS6039434U | 1985-03-19 | |||
| US6144891A | 2000-11-07 | |||
| JP2020006452A | 2020-01-16 | |||
| JP2019150922A | 2019-09-12 |
Attorney, Agent or Firm:
MURAKAMI, Takashi (JP)
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