Clamping device

A clamping device for holding a semifinished product in position with respect to a support base, which comprises:

• at least one first clamping assembly (2), which is intended to be removably fixed to one of said support base and said semi-finished product and it comprises at least one first connection body (3);
• at least one second clamping assembly (4), which is intended to be removably fixed to the other of said semi-finished product and said support base and it comprises at least one second connection body (5);
• said first and second connection body (3, 5) being mechanically engaged to mutually move one with respect to the other between a plurality of first adjustment positions;
• said first and second connection body (3, 5) being slidably associated along a translation direction to move one with respect to the other in said plurality of said first adjustment positions;
• a first locking system (6), which is mechanically associated with said first and with said second connection body (3, 5) and they can be switched between a first constraint condition, in which it locks said first and second connection body (3, 5) into one of said first adjustment positions, and a first release condition, in which it frees said first and second connection body (3, 5) to mutually move one with respect to the other;
• a first actuation piston (7), which is slidably inserted into a first guide chamber (8) obtained on said first connection body (3) in order to translate between a first actuation position, in which it maintains said first locking system (6) in said first constraint condition, and a second actuation position, in which it maintains said first locking system (6) in said first release condition;
• a first elastic member (9), which is inserted into said first guide chamber (8) and it is provided to force said first actuation piston (7) into one of said first actuation position and said second actuation position;
• a first actuator (10), which is provided to move said first actuation piston (7) into the other of said first and second actuation position, making said first elastic member (9) yield elastically;
• wherein said second connection body (5) is provided with a guide seat (19) at least partially internally delimited by a first lateral surface (20) and said first connection body (3) is at least partially inserted into said guide seat (19) slidably along said translation direction;
• said first connection body (3) being provided with a locking portion (21) contained in said guide seat (19) and deformable between an expanded configuration, in which it exerts a pressure against said first lateral surface (20) to prevent said first connection body (3) from sliding into said guide seat (19), and an undeformed configuration, in which it does not exert pressure against said first lateral surface (20) allowing said first connection body (3) to slide in said guide seat (19);
• said first locking system (6) being provided to maintain the locking portion (21) of said first connection body (3) in said expanded configuration when it is in said first constraint condition and being provided to maintain said locking portion (21) in said undeformed configuration when it is in said first release condition.