Single-pass laser welding method of a T assembly of metallic parts
AssigneeSnecma Moteurs
InventorsHerve Launais, Thierry Flesch, Dominique Mignot, Michel Allouard
Life of this patent
Estimating the term…
Abstract
The method is used to attach the various parts of a “T” assembly using a single laser welding pass from the outside of the “T” assembly. Welding is done with a bifocal welding head (20) the two axes (21) of which are parallel to a surface of the part forming the “T” stem (10), the weld being made along the entire length of the assembly. To be used when manufacturing vanes for a turbo jet fan duct.
Claims23
Laser welding method for the assembly of metal parts arranged in the shape of a T, the stem of the T being formed of a stem plate with parallel surfaces, the assembly only being accessible from the head side of the T, through an external surface, the method comprising the following phases:
- T assembly of parts adjacent to each other, laser welding of the assembly through the outer surface of the T head, by two welds made at the same time and with welding axes parallel to each other and perpendicular to the top surface of the head of the T, such that each a first axis of the two welding axes is tangent to a first surface of the parallel surfaces of the stem plate and a second axis of the two welding axes is tangent to a second surface of the parallel surfaces of the stem plate.
A method for welding a first part to a second part, said first part having a plate with a first surface and a second surface, wherein said first and second surfaces are opposite each other, the method comprising the following steps:
- positioning each of said first and second surfaces of said first part adjacent to said second part;
- generating a first laser beam and a second laser beam, wherein said first and second laser beams are parallel to each other;
- and
- directing the first beam so as to produce a first weld between the first surface of said first part and said second part, and simulatenously directing the second beam so as to produce a second weld between the second surface of said first part and said second part,
- wherein said directing step is performed so that said first beam is tangent to said first surface of said first part and said second beam is tangent to said second surface of said first part.
Dependencies are inferred from the claim text.