Laser apparatus for welding
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorKwang Min Oh
Life of this patent
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Abstract
A laser apparatus for welding is disclosed. The laser apparatus includes: a laser optic head adapted and configured to modify a spot size of a laser beam oscillated by a laser oscillator and to project the laser beam into a joining portion of joining members, wherein the laser optic head is adapted and configured to modify the spot size to selectively perform brazing or welding. A method of selectively brazing or welding according to one or more exemplary embodiments of the present invention includes: providing a laser apparatus of as described herein; and actuating the laser optic head to modify the spot size of the laser beam and project the laser beam into the joining portion of the joining members to selectively perform brazing or welding.
Claims11
A laser apparatus for welding, comprising:
- a laser optic head adapted and configured to modify a spot size of a laser beam oscillated by a laser oscillator and to project the laser beam into a joining portion of joining members,
- wherein the laser optic head is adapted and configured to modify the spot size to selectively perform brazing or welding, and
- wherein the laser optic head comprises:
- a head housing mounted at the lower portion of the mounting frame, and provided with an upper portion having a side connected to an optical fiber cable for transmitting the laser beam oscillated by the laser oscillator and a lower portion formed of a laser shooting hole;
- a collimation lens mounted at an extended portion of the head housing so as to be movable upwardly or downwardly through driving means and adapted to control the size of the laser beam oscillated by the laser oscillator, wherein the size of the laser beam is changed by changing a distance from an end of the optical fiber cable to the collimation lens;
- a first reflector mounted at a side portion in the head housing on a vertical line of the collimation lens and adapted to totally reflect the laser beam in a horizontal direction;
- a second reflector mounted at the other side in the head housing on a horizontal line of the first reflector and adapted to totally reflect the laser beam reflected by the first reflector in a vertical direction;
- and
- a focus lens mounted corresponding to the laser shooting hole of the head housing on the vertical line of the second reflector, and adapted to form a focus of the laser beam reflected by the second reflector and to shoot the laser beam into the joining portion of the joining members,
- wherein the first reflector, the second reflector, and the focus lens are fixed to the head housing.
Dependencies are inferred from the claim text.