Abstract: Described is a compensator (1) for unbalanced compression forces for press machines (100), comprising: a first body (20) having a first concave coupling surface (21) and a first end portion (22) opposite the first coupling surface (21); a second body (30) having a second convex coupling surface (31) and a second end portion (32) opposite the second coupling surface (31), the first (21) and second (31) coupling surfaces being geometrically coupled to each other in such a way as to allow a relative rotational movement between the first body (20) and the second body (30). More specifically, an end portion (22, 32) of at least one of the bodies (20, 30) is configured for being fixed to a structural element (101) of a press machine (100), the end portion (32, 22) of the other body (30, 20) being configured for forming an abutment surface designed to interact, in use, with a free end (402) of a stem (401) of a gas cylinder (400) of a press machine.

Abstract: A device (1) for checking the state of charge of a gas spring (100), comprises: a supporting structure (2) equipped with connecting means (3) adapted to be reversibly connected to a gas spring (100); a plunger (4) slidably received, at least partly, in the supporting structure and having a first end (4b) adapted to interact, in conditions of use, with a charging valve of a gas spring, the plunger having a second end which has an abutment surface (4d); pushing means (6) operating on the abutment surface (4d) of the plunger (4) to apply a measured thrust on the plunger (4) such as to induce the displacement thereof; a position indicator (5) operatively associated with the plunger (4) and configured to represent the position of the plunger relative to a reference element (7). Also described is a method for checking the state of charge of a gas spring (100).

Abstract: Described is an automatic threading machine comprising an electric motor (2) having a rotor (3) designed to selectively rotate in both directions about an axis (4) and a tool holder spindle (7) able to move with a rotating movement about the axis (4) and with a translating movement along the axis (4). The rotor (3) controls the rotating movement of the tool holder spindle (7) about the axis (4). The tool holder spindle (7) is supported by the rotor (3) and moves as one with it in the rotating movement about the axis (4). The rotor (3) has internally a chamber (5) along which the tool holder spindle (7) can translate along the axis (4) and which is suitable for at least partly housing the tool holder spindle (7) in at least one position adopted by the tool holder spindle. The electric motor (2) comprises stator windings (10) arranged radially outside the rotor (3) and the chamber (5). The stator windings (10), the rotor (3) and the chamber (5) extend along the axis (4) for at least one shared stretch.

Abstract: A gas spring is provided that can comprise at least one rod, at least one guide bushing, and at least one dynamic seal. The rod can slide inside at least one cylinder containing gas. The dynamic seal can be interposed between the rod and the cylinder. In some embodiments, the guide bushing can be formed from a first mixture comprising a thermoplastic polymer and a solid lubricant filler. Further, in some embodiments, the dynamic seal can be formed from a second mixture comprising a thermoplastic elastomer and a mineral filler or a powder of thermoplastic polymer.

Abstract: A spring (1) with fluid (2) including a containment body (3) having an inner chamber (4) in which the fluid (2) is inserted, a compression unit (8) slidably mounted on the containment body (3) and a sealing gasket (11) for the fluid (2) interposed between the containment body (3) and the compression unit (8) for preventing escape of the fluid (2) from the inner chamber (4); the spring (1) includes at least one closed loop (13) surrounding the compression unit (8), connected to the containment body (3) and in contact with the sealing gasket (11) so as to limit the deformation of the latter.

Abstract: A device (1) for checking the state of charge of a gas spring (100), comprises: a supporting structure (2) equipped with connecting means (3) adapted to be reversibly connected to a gas spring (100); a plunger (4) slidably received, at least partly, in the supporting structure and having a first end (4b) adapted to interact, in conditions of use, with a charging valve of a gas spring, the plunger having a second end which has an abutment surface (4d); pushing means (6) operating on the abutment surface (4d) of the plunger (4) to apply a measured thrust on the plunger (4) such as to induce the displacement thereof; a position indicator (5) operatively associated with the plunger (4) and configured to represent the position of the plunger relative to a reference element (7). Also described is a method for checking the state of charge of a gas spring (100).

Abstract: Described is a compensator (1) for unbalanced compression forces for press machines (100), comprising: a first body (20) having a first concave coupling surface (21) and a first end portion (22) opposite the first coupling surface (21); a second body (30) having a second convex coupling surface (31) and a second end portion (32) opposite the second coupling surface (31), the first (21) and second (31) coupling surfaces being geometrically coupled to each other in such a way as to allow a relative rotational movement between the first body (20) and the second body (30). More specifically, an end portion (22, 32) of at least one of the bodies (20, 30) is configured for being fixed to a structural element (101) of a press machine (100), the end portion (32, 22) of the other body (30, 20) being configured for forming an abutment surface designed to interact, in use, with a free end (402) of a stem (401) of a gas cylinder (400) of a press machine.

Abstract: Described is an automatic threading machine comprising an electric motor (2) having a rotor (3) designed to selectively rotate in both directions about an axis (4) and a tool holder spindle (7) able to move with a rotating movement about the axis (4) and with a translating movement along the axis (4). The rotor (3) controls the rotating movement of the tool holder spindle (7) about the axis (4). The tool holder spindle (7) is supported by the rotor (3) and moves as one with it in the rotating movement about the axis (4). The rotor (3) has internally a chamber (5) along which the tool holder spindle (7) can translate along the axis (4) and which is suitable for at least partly housing the tool holder spindle (7) in at least one position adopted by the tool holder spindle. The electric motor (2) comprises stator windings (10) arranged radially outside the rotor (3) and the chamber (5). The stator windings (10), the rotor (3) and the chamber (5) extend along the axis (4) for at least one shared stretch.

Abstract: Described is a spring (1) with fluid (2) comprising a containment body (3) having an inner chamber (4) in which the fluid (2) is inserted, a compression unit (8) slidably mounted on the containment body (3) and a sealing gasket (11) for the fluid (2) interposed between the containment body (3) and the compression unit (8) for preventing escape of the fluid (2) from the inner chamber (4). According to this invention, the spring (1) comprises at least one closed loop (13) surrounding the compression unit (8) and connected to the containment body (3). The closed loop (13) is positioned, at least during the sliding of the compression unit (8), in contact with the sealing gasket (11) so as to limit the deformation of the latter.

Abstract: A gas spring is provided that can comprise at least one rod, at least one guide bushing, and at least one dynamic seal. The rod can slide inside at least one cylinder containing gas. The dynamic seal can be interposed between the rod and the cylinder. In some embodiments, the guide bushing can be formed from a first mixture comprising a thermoplastic polymer and a solid lubricant filler. Further, in some embodiments, the dynamic seal can be formed from a second mixture comprising a thermoplastic elastomer and a mineral filler or a powder of thermoplastic polymer.