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:
May. 22, 2012
Filed:
Jan. 08, 2008
Hak-beum Park, Daejeon, KR;
Byeong-eun OH, Daejeon, KR;
Myoung-ho OH, Daejeon, KR;
Yong-kwan Kim, Daejeon, KR;
Hung-soon Chang, Daejeon, KR;
Chang-hwan Hwang, Daejeon, KR;
Sang-hyun Lim, Daejeon, KR;
Hak-beum Park, Daejeon, KR;
Byeong-Eun Oh, Daejeon, KR;
Myoung-ho Oh, Daejeon, KR;
Yong-kwan Kim, Daejeon, KR;
Hung-soon Chang, Daejeon, KR;
Chang-hwan Hwang, Daejeon, KR;
Sang-hyun Lim, Daejeon, KR;
Korea Nuclear Fuel Co., Ltd., Daejeon, KR;
Abstract
The present invention relates to an apparatus and method for capturing an image of a welding spot during a welding task and determining an accurate position of the welding spot based on the captured image in order to perform an accurate welding task. A beam splitter splits a path of light reflected from a welding section of a spacer grid from a path of a laser beam generated from a laser generator. An image sensor receives light reflected from a welding spot of the spacer grid, and senses and stores an image of the spacer grid. Welding control means controls the image sensor to capture the image of the spacer grid, receives the image of the spacer grind from the image sensor, calculates an accurate position of the welding spot based on the received image, corrects position information of the welding spot based on the calculated position, and controls a servo motor so that the laser generator can accurately collimate the welding spot based on the corrected position value.