Device for calibrating and lightening the weight of crankshafts

A device for calibrating and lightening the weight of a crankshaft, said device comprising:

• a tooling provided with a seat wherein the crankshaft is formed;
• a plurality of moveable bodies that are moveable between an initial position and a final position, wherein in the final position one end of each moveable body extends inwardly from said seat of said tooling to form a cavity to lighten the weight of the crankshaft;
• a plurality of wedges having inclined planes, wherein said movable bodies are mounted at said wedges and are movable diagonally with respect to said seat of said tooling;
• and
• an intermediate piece mounted on one of said wedges and having a pair of angled body support surfaces;
• wherein at least two of said moveable bodies are mounted along said intermediate piece at respective ones of said angled body support surfaces and have respective longitudinal axes arranged parallel to said angled body support surfaces, wherein said at least two of said moveable bodies are configured to move transversely in relation to their respective longitudinal axes;
• and
• wherein said tooling comprises a lower edge piece in which said moveable bodies are mounted, wherein said lower edge piece is moveable with respect to a frame of said device.