Patent ID: 11872617
Assignee: SAFRAN NACELLES
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A method for manufacturing annular sectors of an air intake lip comprising:
arranging a revolution-shaped blank facing a three-dimensional forming surface of a die of a hydroforming tool, the three-dimensional surface comprising at least two plunging cavities spaced from each other along a circumferential direction,
forming an air intake lip preform in one piece by hydroforming the revolution-shaped blank on the three-dimensional surface of the die, the air intake lip preform having in section a U-shape and comprising a plurality of crenellated portions each delimited by a respective one of the plunging cavities,
producing a plurality of cutouts in the air intake lip preform so as to divide said preform into a plurality of annular sectors, each cutout comprising removal of a sacrificial portion at a level of a respective one of the crenellated portions so as to form two adjacent assembly edges with one of the two adjacent assembly edges including a plunging.