Forming tool

A forming tool comprising:

• a die with a seat for receiving a material to be formed,
• an upper punch axially movable into and out of said seat from one side of the die,
• a lower punch axially movable into and out of said seat from the opposite side of the die,
• movable loading means for introduction of the material into said seat,
• an impact press arranged to subject the upper punch to a series of compacting impacts,
• a unit for supplying driving force to the tool and a control device for controlling the motion of the movable parts of the tool,
• an impact head positioned above the die and supporting the upper punch, said impact head arranged to receive the series of compacting impacts delivered by the impact press, said impact head guided and centered in a position aligned with the seat in the die by a vertically adjustable roof, the impact head is movable relative to the roof, the roof is provided with a center aperture through which the impact head extends, the center aperture provided with a lower mechanical stop and an upper mechanical stop spaced apart in an axial direction, said impact head having an external flange of a height less than a distance between the two mechanical stops of the roof, said flange preventing movement of said flange below the lower mechanical stop and above the upper mechanical stop, said flange positioned between said upper and lower mechanical stops.