The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2025
Filed:
Mar. 04, 2021
Applicant:
Omron Corporation, Kyoto, JP;
Inventors:
Masayuki Sugioka, Kyoto, JP;
Masayoshi Tsukikawa, Kyoto, JP;
Kota Miyamoto, Kyoto, JP;
Kento Tsuchikawa, Kyoto, JP;
Yuki Sakamoto, Kyoto, JP;
Assignee:
OMRON Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P 19/06 (2006.01);
U.S. Cl.
CPC ...
B23P 19/066 (2013.01);
Abstract
According to the present invention, an axial force of a screw which is generated by screw driving is estimated. A control part applies a predetermined torque generated by a rotation axis servomotor to a screw in a rotation direction where a screw is driven, and thereafter releases the torque. The control part then estimates an axial force of the driven screw based on fluctuation of a rotation position of the rotation axis servomotor which occurs due to the release of the torque.