| 摘要 |
The present invention relates to a fastening device of a blade or of a blade cluster on a rotor or stator of a turbine stage or a compressor stage, comprising an engaging foot (1) and a receiving groove (4), which according to the invention has two predefined contact points (4a, 4b) that are opposite to each other relative to the foot and that are at a radial distance to each other. At least the one, preferably the two, predefined contact points are shaped in such a way that the predefined contact points form undercuts (4a, 4b) in the radial direction, which undercuts engage with corresponding undercuts on the engaging foot when the blade or the cluster is radially aligned. |
