Abstract: A method and apparatus is described for producing a large number of identical parts from a bar of material by electrochemical machining without the intervention of an operator. The apparatus comprises a spindle for supporting the bar and periodically feeding it in the direction of its axis, and an electrochemical machining assembly comprising cathodes for shaping the leading end portion of the bar to form the part. After the part has been shaped, it is electrochemically cut from the bar, and the bar is advanced longitudinally by the spindle in order to proceed with the machining of the next part.

Abstract: A vane for a fan including a platform, a root and a blade. The platform has opposite outer and inner surfaces, and opposite upper and lower surfaces. The upper surface has a camber shape, and the lower surface has a concave shape corresponding to the camber shape of the upper surface. The root is fixed to the inner surface of the platform and adapted to be fixed to a hub of the fan. The blade is fixed to the outer surface of the platform at a position shifted toward the lower surface from a center line between the upper and lower surfaces.