DEVICE FOR TWISTING BLADE FEATHER OF GAS-TURBINE ENGINE Russian patent published in 2015 - IPC B21D53/78 B21D11/14 F01D5/12 

FIELD: engines and pumps.

SUBSTANCE: blade feather twisting device includes a lodgement for fixation of a blade lock, a removable lodgement of an end section of the blade feather, a removable lodgement of an intermediate section of the blade feather and a power drive. The removable lodgement of the intermediate section of the blade feather includes a puncheon and a die with plates of a back and a pan of the twisted blade feather. The removable lodgement of the end section of the blade feather is formed with two semi-wheels with a possibility of circumferential movement about the blade axis, each of which is provided with a projecting platform. The power drive is made in the form of a lever with lateral sides parallel to the chord of the end section of the blade feather, which is formed with semi-wheels at closure and interacts with formed plates rigidly attached to the puncheon and the die. The lodgement for fixation of the lock and the removable lodgement of the end section of the blade feather is installed on upper and lower moving platforms enveloping the removable lodgement of the intermediate section of the blade feather. Support surfaces of the removable lodgement of the intermediate section of the blade feather are rigidly attached to plates and have a possibility of translational movement relative to the blade. Compression springs are installed between the platforms and the plates.

EFFECT: invention allows improving productivity of a blade feather twisting device and quality of the blades manufactured by means of it.

5 cl, 9 dwg