A machining centre includes a base supporting several superposed stages. At least one stage is movable and can be position indexed relative to the base. Each stage includes distinct stations at a constant angular pitch including machining units or grippers. The combination of stations from adjacent stages defines a plurality of machining locations each combining a unit and a gripper. Each relative movement between two indexing positions of two stages changes the composition of the locations. Each gripper has at least one rotational degree of freedom relative to the stage that carries it. At least one station includes both at least one machining unit and at least one gripper.

A tool turret, in particular provided for the use for a machine tool, has a pivotable tool disk (10), which has on its outer circumference a plurality of receptacles (14) for holders (18) provided with working tools. The holders (18) are attached to the tool disk (10) in a changeable manner by a fixing device (20). Each holder (18) can be swiveled into a working position to permit the assigned working tool to be driven by a drive (22). For this purpose, the working tool can be coupled to an output shaft (16) of the respective holder (18) by a coupling device (26). The fixing device (20) can be actuated by the drive (22) when this drive (22) is uncoupled while stopping the working tool.

1. A tool turret

2. A tool turret, in particular provided for the use for a machine tool, having a pivotable tool disk (10), which has on its outer circumference a plurality of receptacles (14) for holders (18) provided with working tools, wherein said holders (18) are attached to the tool disk (10) in a changeable manner by means of a fixing device (20) and, each swiveled into a working position, permit the assigned working tool to be driven by means of a drive (22), which for this purpose can be coupled to an output shaft (16) of the respective holder (18) by means of a coupling device (26), is characterized in that the fixing device (20) can be actuated by means of the drive (22) when this drive (22) is uncoupled while stopping the working tool.

A machining centre includes a base supporting several superposed stages. At least one stage is movable and can be position indexed relative to the base. Each stage includes distinct stations at a constant angular pitch including machining units or grippers. The combination of stations from adjacent stages defines a plurality of machining locations each combining a unit and a gripper. Each relative movement between two indexing positions of two stages changes the composition of the locations. Each gripper has at least one rotational degree of freedom relative to the stage that carries it. At least one station includes both at least one machining unit and at least one gripper.

A window processing system and method for use in fabricating window frames or sashes. The system includes an articulating arm having a plurality of members and arms to allow movement about multiple axes defined by the articulating arm. The system further includes a tool support fixture assembly coupled to an outermost member of the plurality of members, the tool support fixture assembly includes a plurality of tools for performing cleaning operations on a window frame or sash during use.

The invention relates to a machining device for the machine-assisted production and machining of dental workpieces (16), particularly of artificial teeth and/or other dental replacement parts, the at least one workpiece (16) being clamped in at least one workpiece retainer (11) which can be raised, lowered and rotatably driven, is positioned on a rotational axis (9), and, for the purpose of machining, feeds said workpiece (16) to at least one tool spindle (4, 5, 6) that is rotationally driven and has a tool (7) secured thereto, an additional tool retainer (2, 2a, 2b) with a plurality of tools (7) arranged thereupon being associated with said workpiece retainer (11, 11a, 11b) and lying opposite on one side thereof, and a workpiece changer (22, 22a, 22b) which receives the workpieces (16, 16a, 16b, 16c) to be machined, such that they can be exchanged, being arranged on the other side of said workpiece retainer (11, 11a, 11b).

The invention relates to a replacement device (1) for replacing machining inserts (900) on a tool (800) comprising a body (810) and a head (820) carrying at least one machining insert (900), each insert being held on the head (820) by a screw. The device (1) comprises: a positioner (50) including a holder element (59) suitable for holding the body (810) of the tool; a screwdriver station with a screw gun (60) suitable for tightening and loosening the screws, the positioner (50) being suitable for moving the tool relative to the screwdriver station; a grip device (70) suitable for picking up and putting down an insert (900); a conveyor (500) having a plurality of receptacles (510) for inserts, and having distributed along it a first station (100) with the grip device (70), a second station (200) with a turning mechanism (20) for turning the inserts around, a third station (300) with an unloading mechanism (30) for unloading the inserts, and a fourth station (400) with an insert feed mechanism (40); a transport mechanism (80) suitable for moving the grip device (70) between the positioner (50) and the first station (100) of the conveyor (500); and a control center (600) suitable for automatically controlling one or more of the mechanisms and devices and/or the conveyor of the replacement device (1).

A machine tool includes: a lower tool rest on which a plurality of tools are mounted; a motor provided at the lower tool rest, for rotating a rotating tool when the rotating tool is mounted on the lower tool rest; and a tool holder attached to the lower tool rest, for detachably holding the tool. The tool holder has a clamping mechanism portion operating between a clamping state of clamping the tool and an unclamping state of unclamping the tool, as a result of transmission of motive power generated at the motor. With such a configuration, the clamping mechanism portion for automatically clamping and unclamping the tool held in the tool holder on the tool rest is provided with a simple configuration.

The invention relates to a machine tool as well as to a method for operating the machine tool. The machine tool comprises a workpiece carrier (20) that can be incrementally rotated about an incremental advance axis (22) and has several carrier sides (25). A first workpiece chuck unit (26) for holding a workpiece in a first position (P1) and a second workpiece chuck unit (27) for holding a workpiece in a second position (P2) are arranged on each carrier side (25). In each angular position or incremental advance position of the workpiece carrier (20), one carrier side (25) is in a loading station (30), one carrier side (25) is in an unloading station 31, and the respectively other carrier sides (25) are in respectively one work station (32). A workpiece changing device (34) is provided, said device moving a partially machined workpiece (16a) out of the first position (P1) in the unloading station (31) into the second position (P2) in the loading station. The position change of the partially machined workpiece (16a) preferably also takes place during the incremental advance movement of the workpiece carrier (20). Preferably, the partially machined workpiece (16a) can be turned in doing so.