Title:
レーザ溶接方法および装置
Document Type and Number:
Japanese Patent JP5710171
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To achieve the butt welding of a double pipe by laser beam welding irrespective of the length of the pipe without disposing a rolling mechanism outside the pipe.SOLUTION: A laser beam welding device includes: a laser welding head 12 including an optical system that causes a laser beam brought by an optical fiber 34 to be reflected by a reflective mirror 33 to irradiate the inner periphery of the pipe of an object to be welded with the reflected light; the rolling mechanism 14 for supporting the laser welding head 12 in a position where the axis line of the laser welding head 12 is eccentrically positioned relative to the tube axis of the pipe, and swirling the laser welding head 12 around the rotation axis located on the tube axis; and a fixation mechanism 16 for pressing a plurality of fixing pads 21 stored in a barrel 20 coupled coaxially with the rolling mechanism 14 to the inner periphery of the pipe, fixing the barrel 20 coaxially with the tube axis and also fixing the position of the laser welding head 12 in the tube axial direction.
Inventors:
Katsuhiko Sato
Terashima Toshinori
Toru Sakamoto
Takehisa Hino
Noboru Jimbo
Terashima Toshinori
Toru Sakamoto
Takehisa Hino
Noboru Jimbo
Application Number:
JP2010172229A
Publication Date:
April 30, 2015
Filing Date:
July 30, 2010
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
B23K26/00; B23K26/21; B23K26/046; B23K26/064; G21C19/02
Domestic Patent References:
| JP2009220179A | ||||
| JP3128183A | ||||
| JP9314384A | ||||
| JP6344140A | ||||
| JP4111988A | ||||
| JP8504678A |
Foreign References:
| US5179260 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta