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:
Sep. 04, 2012
Filed:
Jan. 16, 2009
Takashi Kobayashi, Tochigi-ken, JP;
Katsuyuki Nakajima, Utsunomiya, JP;
Hiroaki Yamagishi, Utsunomiya, JP;
Akihiro Nemoto, Tochigi-ken, JP;
Takashi Kobayashi, Tochigi-ken, JP;
Katsuyuki Nakajima, Utsunomiya, JP;
Hiroaki Yamagishi, Utsunomiya, JP;
Akihiro Nemoto, Tochigi-ken, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A first laser working method includes a step of irradiating the metallic work held by a rotation holding mechanism, with a nanosecond laser beam from a first laser oscillation mechanism, to form a through hole, and a step of irradiating, when the metallic work is rotated under the action of the rotation holding mechanism, the inner wall of the through hole with a picosecond laser beam from a second laser oscillation mechanism, thereby to finish the same. While forming the through hole, metal vapor is sucked from the outside of the metallic work. Then, the gas is fed from the outside of the metallic work, and the inside of the metallic work is suctioned. In a second laser working method, when a lower hole made through is radially enlarged, the exit side of the lower hole is kept lower in pressure than the laser incident (or entrance) side.