WELDING APPARATUS AND METHOD

Japanese Patent JP3799599

B2

PROBLEM TO BE SOLVED: To provide a welding apparatus and a welding method that prevents a cylindrical work from deforming and remedies deformation on the welding portion before welding when fusion welding a pair of cylindrical works in a circumferential direction.
SOLUTION: Laser generated by a laser generator 1 is split into two directions by a spectroscope 2. The split laser is radiated onto an outer cylindrical work 10 from the two optical heads 20. Each optical head 20 is positioned outside the outer cylindrical work 10 and an inner cylindrical work 11, about 90 degrees apart from one another relative to the central axis of both the cylindrical works, on a plane orthogonal to the central axis. The outer cylindrical work 10 and the inner cylindrical work 11 are fusion welded over the entire circumference by the laser 30 radiated from the optical head 20. Since the laser irradiation takes place at positions 90 degrees apart from each other on the outer cylindrical work 10, the directions the outer cylindrical work 10 and the inner cylindrical work 11 tend to deform cross at a right angle, giving a uniform deformation all over the works.

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Hideaki Shirai
Koji Murakami
Norio Tanaka
Kariya Kazuki
Hiroyuki Nishina
Takayuki Soto

JP2002011556A

July 19, 2006

January 21, 2002

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株式会社デンソー

F02M51/06; B23K26/00; B23K26/064; B23K26/067; B23K26/21; B23K26/28; (IPC1-7): B23K26/00; B23K26/06; F02M51/06

JP9096264A
JP56033187A
JP2001317429A
JP2002004971A

Masaki Hattori

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