Patent ID: 8826535

Claim:
A method for manufacturing an integrally bladed rotor, comprising the steps of: providing a basic rotor body having an axial direction; providing grooves in the basic rotor body, the grooves extending substantially in the axial direction of the basic rotor body; providing rotating blades, each rotating blade having a blade foot; positioning the rotating blades relative to the basic rotor body so the central axis of each groove is positioned obliquely relative to a central axis of each respective blade foot; inserting the rotating blades by their blade feet or by adapters respectively connected thereto into their respective grooves so that a pre-twisting is automatically formed on the rotating blades when the rotating blades are inserted into the grooves; and welding the rotating blades to the basic rotor body; wherein the grooves of the basic rotor body and/or the blade feet or the adapters of the rotating blades are contoured conically in the axial direction of the basic rotor body.