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:
Feb. 22, 2022
Filed:
Oct. 24, 2018
Applicant:
Nsk Ltd., Tokyo, JP;
Inventors:
Assignee:
NSK LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 39/04 (2006.01); G01B 11/27 (2006.01);
U.S. Cl.
CPC ...
B21D 39/04 (2013.01); G01B 11/272 (2013.01);
Abstract
In a preparation step, a frame (), a concave spherical seat (), a convex spherical seat (), a rotation body (), a rotating shaft (), and a work holder () are assembled, a laser head () is attached to the convex spherical seat (), and a light receiving unit () is attached to the work holder (). In a rotation body centering step, an irradiation position of a laser beam (LB) with respect to a laser irradiation surface () is changed by rotating the rotation body () while allowing the laser irradiation surface () to be irradiated with the laser beam (LB) emitted from the laser head () and a trajectory of the irradiation position is checked.