LASER BEAM JOINING METHOD ITS DEVICE

Japanese Patent JP3935639

B2

PROBLEM TO BE SOLVED: To join a metal bar of high melting point with a metal sheet by arranging the round bar like metal bar on a foil-like metal sheet parallel to its axis, converging the laser beam at a part in the vicinity of a portion where the metal bar is brought into contact with the metal sheet, and preventing the metal sheet from being irradiated with the laser beam.
SOLUTION: A part in the vicinity of a contact part of a metal bar 1 with a metal sheet 2 is irradiated with the laser beam 5, and the metal sheet 2 is prevented from being irradiated with the laser beam. The metal bar 1 is cut flat, and irradiated with the laser beam 5 in a condition where the flat surface is brought into contact with the metal sheet 2, the metal sheet 2 is of recessed surface equivalent to the contour of the metal bar 1, the metal bar 1 is arranged in the recessed surface, and preferably irradiated with the laser beam 5. The laser beam 5 whose intensity distribution is higher at its center is emitted with the long pulse. The axes of emission of a plurality of laser diodes are arranged on the same plane, the laser beam 5 is converged, and a part in the vicinity of a contact part of the metal bar 1 with the metal sheet 2 is irradiated with the laser beam.

JPS62145624	MANUFACTURE OF ELECTRONIC GUN
JPS5782931	MANUFACTURING METHOD FOR ELECTRODE FRAME

Tsutomu Sakurai
Yoshiki Kitahara
Tatsuya Kawamura
Kazuhiko Senoo

JP9489099A

June 27, 2007

April 01, 1999

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Matsushita Electric Industrial Co., Ltd

H01J9/18; B23K26/00; B23K26/02; B23K26/064; B23K26/067; B23K26/082; B23K26/21; B23K33/00; (IPC1-7): B23K26/00; B23K26/02; B23K26/06; B23K26/08; B23K33/00; H01J9/18

JP7185852A
JP59107786A
JP51058128U
JP7205303A
JP4220186A

Masaru Ishihara

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