Patent ID: 6696668
Filing Date: 2004-02-24
Classification: B23K,B25J,G05B,H01R,H05K

Abstract:
A laser soldering method comprising:a soldering head for projecting a laser beam for soldering toward an object to be soldered; and an image pickup camera mounted on said soldering head in such a manner that an optical axis thereof coincides with an optical axis of said laser beam, wherein said camera images the object to be soldered and displays the image on a monitor screen, and displays a projection spot positioned on an optical axis of the laser beam on the monitor screen, wherein the projection spot is indicated on the monitor screen by a portion surrounded by two vertical parallel lines and two horizontal parallel lines between which a space between the parallel lines is adjustable, wherein said soldering head and the object to be soldered are moved relative to each other to position said projection spot while the positional relationship between the object to be soldered and the projection spot is observed on the monitor screen, wherein the laser beam is projected from said soldering head to the object to be soldered, thus, performing soldering, and wherein a hot inert gas is heated to a specified temperature in advance, completely surrounds the laser beam and is ejected from a gas ejection nozzle provided in said soldering head along the optical axis of the laser beam.