Clamping and centering device for work pieces, having a hook-shaped clamping member

Clamping and centering device for work pieces of the type comprising:

• a box-shaped body having a longitudinal axis;
• a hollow centering pin, axially extending from the box-shaped body;
• at least one clamping member, movable between a forward releasing position inside the centering pin and a backward position outside of the aforesaid pin for clamping a work piece against a shoulder surface, said clamping member having a hook-shaped portion at a fore end, and a rear shank;
• actuating means operatively connected to the clamping member;
• a support element for supporting said centering pin and said clamping member;
• and
• guide means for the clamping member, comprising first and second cam members in the rear shank of the clamping member, and first and second guide pins secured to the support element, said guide pins extending into said cam members for guiding the clamping member, the first and second cam members being shaped and arranged to provide the clamping member with successive and correlated translation movements in an angularly slanted direction and in a cross direction with respect to the longitudinal axis of the box-shaped body,
• the support element, the centering pin, and the at least one clamping member being arranged in the form of a single unit removably secured to the box-shaped body of the device.