Patent ID: 7090468

Claim:
A fastening device for fastening moving blades to a disk of a turbomachine rotor, comprising moving-blade roots which, at least over most of their axial length, have a constant cross section with mirror-symmetrical toothlike or wavelike projections, at least mainly axially running disk slots holding the moving-blade roots in a positive-locking manner in the radial direction and in the circumferential direction, and in each case one riveted joint per moving blade for axially fixing the moving blade to the disk, wherein both each moving-blade root and the disk, in the region of each moving-blade root, in each case have an axial, integral extension, wherein the extensions of the moving blade and disk are opposite one another in pairs at a slight distance apart or in mutual contact, wherein in each case a hole lying with its axis in a radial plane, i.e. in a transverse plane relative to the rotation axis of the disk, is formed approximately half in the extension of the moving-blade root and approximately half in the extension of the disk, and wherein a rivet is inserted into each hole and fixed by plastic deformation and further wherein the rivet is a commercial, rotational rivet having a concentric head with a larger diameter than a diameter of a cylindrical shaft of the rivet.