METHOD FOR MANUFACTURING AN ANNULAR CRANKCASE FOR AN AIRCRAFT TURBOMACHINE

Abstract

The present invention relates to a method for manufacturing a turbomachine housing comprising a skin (40) and tubular stacks (42), the method comprising the following steps: (a) fabrication of the skin (40) from composite material having orifices (400), (b) fabrication of the stacks (42) from composite material, (c) attachment of the stacks (42) to the skin (40), these stacks (42) being attached at the level of the orifices (400), this step (c) comprising, for each stack: (c2) a first welding of a support (420) onto the skin (40) at the level of one of the through orifices (400), and (c4) a second welding of a sleeve (426) onto the support (420) and / or the skin (40), the assembly formed by the support (420) and the sleeve (426) forming said tubular stack (42), wherein the first (c2) and second (c4) Welding is performed by laser (7). Figure for the abbreviation: Fig. 6