Abstract: A machine tool (2) comprising a mobile table (11) and a support and gripping device (200) fitted to one said machine tool (2) and which comprises:—pincer means (210) for blocking the part;—a support (250) which contains and supports the pincer means (210) and is blocked to the mobile table (11). The pincer means (210) comprise a part blocking pincer (212) and an intermediate pincer (211), respectively one inside the other, both elastic. The part blocking pincer (212) has a structure for gripping the part following interaction between the intermediate pincer (211) and the support. (250); in addition the pincer means (210) are suitable for being placed in rotation around the pincer axis (P-P).

Abstract: The guide bushing (1) for a machine tool, especially for an automatic lathe, includes at least two segments (2), each segment being connected on both sides to a neighboring segment by an elastic means (3) in order to form an axisymmetric body of axis (1A) and has a central opening (10) enabling a bar to be machined to pass through, each of the elastic means (3) extends axially along the axis (1A) in a groove (8) of the guide bushing.

Abstract: A tool connecting rod of the present invention includes a barrel and a rod. A resilient unit and a retainer are disposed between the barrel and the rod. Both of an inner wall of the barrel and a body portion of a pushing member are formed with at least two stepped recesses respectively. As such, the structure of the tool connecting rod is simple so that a tool bit assembles on and detaches from the present invention rapidly.

Abstract: The invention pertains to a chuck for detachable connection of two machine parts, with a chuck assembly arranged on or in a first machine part and a cooperating complementary part on or in a second machine part. The chuck assembly contains an axially displaceable tensioning element and several gripper elements associated with the tensioning element and radially movable by axial displacement of the latter, with a clamping surface for contact with a corresponding opposing surface of the complementary part. In order to allow a subsequent alignment or adjustment of the chucked machine part, the complementary part contains an outer part, an intermediate part arranged in the outer part, and an inner part arranged in the intermediate part, which are connected to one another by flexible outer and inner webs and are otherwise separated by outer and inner gaps. The intermediate and inner parts are adjustable in different directions relative to the outer part.