Support and gripping device of a mechanical part, suitable for a machine tool

A support and gripping device of a mechanical part, extending around a pincer axis, suitable for being fitted to a machine tool for mechanical operations comprising a mandrel group and a mobile table, wherein the support and gripping device comprises:

• a pincer suitable to block said mechanical part;
• a support suitable to contain and support said pincer and suitable to be attached to a mobile table;
• wherein both the pincer and the support extend around said pincer axis, wherein the support has inside it, around the pincer axis, a through cavity, in said through cavity the pincer is located, wherein the pincer comprises a part blocking pincer and an intermediate pincer, the first axially fixed, respectively one inside the other, both with elastic characteristics, wherein said part blocking pincer has an elastically yielding annular structure suitable for gripping the mechanical part following interaction between the intermediate pincer and the support, wherein said interaction between the intermediate pincer and part blocking pincer is irreversible and is maintained over time in such a way that the part cannot detach itself, except on command by the support and gripping device;
• wherein the intermediate pincer is moved downwards and upwards by a mandrel group, in order to obtain said interaction between the intermediate pincer and the support and detachment of the support;
• wherein the pincer is suitable to be placed in rotation around said pincer axis by said mandrel group;
• and
• wherein the part blocking pincer and the intermediate pincer are attached to the support by a bayonet attachment.