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:
Jun. 18, 2019
Filed:
Dec. 06, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Masahito Sakakibara, Okazaki, JP;
Yuichi Hirano, Nisshin, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
At a first timing when a tightening machine temporarily tightens a bolt, a distance sensor acquires a first distance image. A distance sensor controller measures a first recess amount of the head of the bolt at the first timing by the first distance image. A manipulator controller is configured to change a relative posture of an image sensor relative to the head of the bolt in accordance with a rotation angle by which the bolt is rotated from the first timing to a second timing. The distance sensor acquires a second distance image at the second timing, and the distance sensor controller measures a second recess amount of the head of the bolt at the second timing by the second distance image, so as to measure an axial tension of the bolt by use of a difference between the first recess amount and the second recess amount.