Patent Number: 6,294,754

Title: Laser beam machining head

Abstract: In a laser beam machine head, when a filler wire and an optical axis of a laser beam are arranged coaxially, a convex roof mirror and a concave roof mirror are combined to divide the laser beam into two separate laser beams to that no laser beam is projected onto a filler wire feed pipe. Furthermore, the filler wire is fed from outside the laser beams to a condensing position via a filler wire guide in the spacing between the separate laser beams, or an electrode supported by a water flow pipe or an electrode holding pipe is brought close to the condensing position.

Inventors: Nagura; Yasumi (Takasago, JP), Nayama; Michisuke (Takasago, JP), Ishide; Takashi (Takasago, JP), Hashimoto; Yoshio (Takasago, JP), Michishita; Yukio (Takasago, JP), Okimura; Koji (Kobe, JP), Nagashima; Tadashi (Kobe, JP), Watanabe; Masao (Kobe, JP), Akaba; Takashi (Kobe, JP), Shimizu; Katsusuke (Tokyo, JP)

Assignee: Mitsubishi Heavy Industries, Ltd.

International Classification: B23K 26/06 (20060101); B23K 26/14 (20060101); B23K 26/067 (20060101); B23K 026/067 (); B23K 026/20 ()

Expiration Date: 09/25/2018