Abstract: A suction cup unit for gripping workpieces comprises a suction cup member carried by a support body within which a device is arranged for autonomously generating a vacuum to be applied to the suction cup member. The vacuum generator device includes an ejector-effect device, configured to generate a vacuum by supplying a flow of pressurized air through a nozzle, a reservoir of pressurized air connected to the nozzle, at least one electrically-operated valve for controlling the connection between the pressurized air reservoir and the nozzle, and a connecting line between the nozzle and the suction cup member, for transmitting a vacuum to the suction cup member when pressurized air is made to flow through the nozzle.

Abstract: A numeric-control work center can be used for carrying out cutting operations or grinding and/or milling operations on plates of stone, marble, or, in general, natural or synthetic stone material, or ceramic material. The work center comprises at least one working head movable along at least two mutually orthogonal horizontal axes on a work surface. The work surface includes a rigid supporting board, which defines a first planar supporting surface, and a series of sacrificial elements rigidly connected to the rigid supporting board. The sacrificial elements are arranged in positions spaced apart from each other and define a second supporting surface located at a higher level than the first planar supporting surface, so that a cutting tool coupled to the working head engraves the sacrificial elements, without interfering with the supporting board during a cutting operation on a plate resting on the sacrificial elements, whichever is the path followed by the cutting tool.

Abstract: A water-jet operating head for cutting materials by a high pressure hydro-abrasive jet includes a main portion which is to be carried by an operating machine movably along one or more axes and a focusing nozzle for ejecting the high pressure hydro-abrasive jet, carried by a support removably connected to the main portion of the head. This support also carries a primary nozzle with an orifice having a predetermined diameter arranged upstream of the focusing nozzle. The high pressure water jet is added with an abrasive agent which is fed through at least one connecting element at a mixing chamber interposed between the primary nozzle and the focusing nozzle. The connecting element is associated to the main portion of the head and the nozzle-carrying support is adapted to be slidably received within a cylindrical cavity of a main support forming part of the main portion of the head.

Abstract: A suction cup unit for gripping workpieces comprises a suction cup member carried by a support body within which a device is arranged for autonomously generating a vacuum to be applied to the suction cup member. The vacuum generator device includes an ejector-effect device, configured to generate a vacuum by supplying a flow of pressurized air through a nozzle, a reservoir of pressurized air connected to the nozzle, at least one electrically-operated valve for controlling the connection between the pressurized air reservoir and the nozzle, and a connecting line between the nozzle and the suction cup member, for transmitting a vacuum to the suction cup member when pressurized air is made to flow through the nozzle.

Abstract: A numeric-control work centre can be used for carrying out cutting operations or grinding and/or milling operations on plates of stone, marble, or, in general, natural or synthetic stone material, or ceramic material. The work centre comprises at least one working head movable along at least two mutually orthogonal horizontal axes on a work surface. The work surface includes a rigid supporting board, which defines a first planar supporting surface, and a series of sacrificial elements rigidly connected to the rigid supporting board. The sacrificial elements are arranged in positions spaced apart from each other and define a second supporting surface located at a higher level than the first planar supporting surface, so that a cutting tool coupled to the working head engraves the sacrificial elements, without interfering with the supporting board during a cutting operation on a plate resting on the sacrificial elements, whichever is the path followed by the cutting tool.

Abstract: A water-jet operating head for cutting materials by a high pressure hydro-abrasive jet includes a main portion which is to be carried by an operating machine movably along one or more axes and a focusing nozzle for ejecting the high pressure hydro-abrasive jet, carried by a support removably connected to the main portion of the head. This support also carries a primary nozzle with an orifice having a predetermined diameter arranged upstream of the focusing nozzle. The high pressure water jet is added with an abrasive agent which is fed through at least one connecting element at a mixing chamber interposed between the primary nozzle and the focusing nozzle. The connecting element is associated to the main portion of the head and the nozzle-carrying support is adapted to be slidably received within a cylindrical cavity of a main support forming part of the main portion of the head.

Abstract: A machine has a head with a nozzle, a pipe for supplying water under pressure to the nozzle, and a duct for supplying an abrasive agent, and adding it to the jet of water under pressure. The duct has a first duct portion, fixed with respect to the head in the movements of rotation about a main axis, and a second duct portion, which is fixed with respect to the movements of rotation. A rotating distributor connects the first rotating portion with the second fixed portion of the duct for supplying the abrasive agent. The distributor's stator and rotor are rotatably mounted on one another without the interposition of seal rings and define between them an internal chamber that is substantially at atmospheric pressure and from which the abrasive agent drops by gravity to a duct outlet that converges into the pipe for supplying water under pressure.

Abstract: A machine for cutting, with a hydro-abrasive jet, materials such as, for example, glass, stone, granite, marble, metal materials in general, and all the materials that can be machined using the aforesaid technology, comprises a cutting head (7) mobile according to one or more axes (X, Y, Z, 11, 13). The head (7) includes a nozzle (8) for the emission of a jet of water under pressure, a pipe (14), extending along a main axis (11) of the head, about which the head is able to turn, for supplying water under pressure to the nozzle, and a duct (19) for supplying an abrasive agent, for example garnet, and adding it to the jet of water under pressure. The duct (19) for the abrasive agent comprises a first duct portion (19a), fixed with respect to the head in the movements of rotation about said main axis (11), and a second duct portion (19b), which is, instead, fixed with respect to said movements of rotation.