Laser welding apparatus and method utilizing replaceable...

Details Laser welding apparatus and method utilizing replaceable... Laser welding apparatus and method utilizing replaceable...

2007-03-22

2011-10-04

Yuen, Henry (Department: 3742)

Electric heating

Metal heating

By arc

C219S121600, C219S121670, C219S121780, C219S121820, C219S121730, C219S121640, C348S144000, C359S641000, C359S822000, C359S823000, C359S824000, C385S079000, C385S134000, C385S060000, C385S074000, C385S075000

Reexamination Certificate

active

08030593

ABSTRACT:
A laser welding apparatus and method for easily adjusting a laser focusing position according to a distance from a laser irradiating device to a laser irradiating point on a work piece, or a welding point. A post-collimation laser diameter is measured when the laser emitting end has an optimal laser diameter on the work piece with respect to the distance from the laser processing head to the work piece. Corresponding data is stored with the above distance and the post-collimation laser diameter corresponding to each other. During welding, a diameter of the laser beam passing through a collimate lens is measured by a laser diameter measuring device. The post-collimation laser diameter is adjusted to be an optimal value according to the corresponding data.

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