| 摘要 |
A forming tool of the type incorporating a die (5) with a seat for the material to be formed, an upper punch (6) axially movable into and out of said seat from on e side of the die, a lower punch (7) axially movable into and out of said seat from th e opposite side of the die, movable loading means (12) for introduction of a material into said seat, an impact press (2) arranged to subject the upper punch (6) to a series of compacting impacts, a unit for supply of driving force to the tool and a control device for controlling the motion of the movable parts of the tool, wherein the device incorporates an impact head (3) positioned above the die (5) and supporting the upper punch (6), sa id impact head (3) being arranged to receive the compacting impacts delivered by the impact press, said impact head (3) being guided and centred in a position aligned with the cavity in the die (5), by means of a vertically adjustable roof (9) supporte d in the tool housing (4), the impact head (3) thereby being mechanically disengaged from the roof (9) for preventing impact forces from propagating into the tool housing (4).
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