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1. (WO2009121765) IMPROVED METHOD FOR PRODUCING A ONE-PIECE BLADED DISC, WITH TEMPORARY BLADE-SUPPORTING RING WHICH IS REMOVED BEFORE A FINISH-MILLING STEP

Pub. No.:    WO/2009/121765    International Application No.:    PCT/EP2009/053482
Publication Date: Oct 8, 2009 International Filing Date: Mar 25, 2009
IPC: B23P 13/02
B23P 15/00
B23C 3/18
B23Q 11/00
B24C 1/04
F01D 5/34
B26F 3/00
Applicants: SNECMA
BERLANGER, Serge
BORDU, Sébastien
MALEVILLE, Thierry, Jean
ROCA, Christophe, Charles, Maurice
Inventors: BERLANGER, Serge
BORDU, Sébastien
MALEVILLE, Thierry, Jean
ROCA, Christophe, Charles, Maurice
Title: IMPROVED METHOD FOR PRODUCING A ONE-PIECE BLADED DISC, WITH TEMPORARY BLADE-SUPPORTING RING WHICH IS REMOVED BEFORE A FINISH-MILLING STEP
Abstract:
The present invention relates to a method for producing a one-piece bladed disc, comprising: a step in which an abrasive water jet is used to cut a block of material in such a way as to leave behind blade preforms extending radially from a disc (4), while keeping material forming bridging means (112) between at least two directly consecutive blade preforms; then a step in which the blade preforms are milled in such a way as to produce semi-finished blades (202) in profile; then a step in which said bridging means (112) are removed; and then a step in which the semi-finished blades (202) are finish-milled in such a way as to obtain the blades (2) to the final profile.