PROCESS FOR FRICTION WELDING BLADES TO THE DRUM OF AN AXIAL COMPRESSOR AND A CORRESPONDING DEVICE

摘要

The invention relates to a process and a device for the orbital friction welding of blades to the drum of an axial compressor. The process consists of holding the drum (14) on a cradle (44) via an indexing table (54), the cradle (44) being able to pivot and vertically movable so as to present different regions of its outer surface parallel to the plane of orbital motion of the blade (18, 20, 22). The blade is held in the orbital motion device (62) by a clamping device (68). The inner surface of the drum (14) is braced by supports (51) carried by a core (52) fixed to the cradle (44). The drum (14) comprises a series of protrusions (38) which have a blade-shaped cross section. These protrusions (38) form faying surfaces for the blades (18, 20, 22). The blades (18, 20, 22) have a plate to ensure they are satisfactorily clamped by the clamping device (68). The possibility of producing a drum at a reduced cost (lower recurring cost) compared to conventional linear friction results from all these steps.