An assembly including a tool (1) and packaging (2) for accommodating the tool (1). The tool (1) includes at least one machining head (3) for machining a workpiece (4), in particular a dental workpiece (4), by a machining unit (5), and a clamping portion (6) for securing the tool (1) in a chuck (7) of the machining unit (5) while the workpiece (4) is being machined. The tool (1) can be repeatedly removed from and placed back in the packaging (2), with the packaging (2) being provided with at least one securing device (11) for fastening the packaging (2) in a temporary tool magazine (12) of the machining unit (5).

A tool exchange assembly and related method configured to swap change tool assemblies with a nutrunner constructed in accordance to one example of the present disclosure includes a nest. The nest has a lower jaw portion and an upper jaw portion. The lower jaw portion has first and second lower fingers that cooperate to define a lower slot. The upper jaw portion has first and second upper fingers that cooperate to define an upper slot. The nest is configured to receive a change tool assembly. Relative movement of the change tool assembly and the nest urges a sleeve on the change tool assembly to move between a locked position and an unlocked position.

An electrospindle device includes at least one electrospindle extending about a vertical axis, the electrospindle including a motor, a shaft that rotates for transmitting motion, and an engagement portion for a toolholder in which a tool rotatably actuated by the shaft is mounted, the tool being actuated directly by the shaft; at least one toolholder support element including at least two toolholders; and at least one device for rotating the at least one toolholder support element, wherein operation of the at least one device for rotating the at least one toolholder support element brings a selected one of said at least two toolholders into vertical alignment with the engagement portion and extending in the vertical axis.

A two-layer disk type tool magazine device matched with a numerical control machine tool, comprises a tool magazine base, a tool magazine support, tool sleeve chucks, a tool disk base, tool sleeves and a tool alignment instrument. The tool magazine base is connected to and installed on the machine tool. The tool magazine support is connected to one end of the tool magazine base. The tool disk base is connected to the support by means of a bolt. The tool alignment instrument is installed at the other end of the tool magazine base. The two tool sleeve chucks are installed on the tool disk base and partitioned by a tool disk partition sleeve. The two layers of tool sleeve chucks clamp a tool sleeve base and are fixed by means of bolts. A tool disk pressing ring presses against the tool sleeve chuck on the upper layer.

A two-layer disk type tool magazine device matched with a numerical control machine tool, comprises a tool magazine base, a tool magazine support, tool sleeve chucks, a tool disk base, tool sleeves and a tool alignment instrument. The tool magazine base is connected to and installed on the machine tool. The tool magazine support is connected to one end of the tool magazine base. The tool disk base is connected to the support by means of a bolt. The tool alignment instrument is installed at the other end of the tool magazine base. The two tool sleeve chucks are installed on the tool disk base and partitioned by a tool disk partition sleeve. The two layers of tool sleeve chucks clamp a tool sleeve base and are fixed by means of bolts. A tool disk pressing ring presses against the tool sleeve chuck on the upper layer.

The invention relates to tool tongs for the releasable holding of a tool, for example in a machine tool. The invention is characterized in that the tool tongs are formed by a tongs basic element and a tongs clamping element interacting and connected with the tongs basic element, wherein in the tool holding position the tongs basic element and the tongs clamping element hold the tool clampingly at its gripping elements, wherein the tongs basic element and/or the tongs clamping element is/are formed of flat material or plate-like material, such as, for example, steel sheet or the like.

In a tool exchanger apparatus of a machine tool including a turret which turns around an axis inclining with respect to a vertical direction and which conveys tools, forces applied to tool gripping portions are calculated from a resultant force of a centrifugal force, gravity and an inertial force applied to each of the tools, using a weight and a position of each of the tools and a turning speed and a turning acceleration of the turret for each of turning phases when the turret turns, and the turning speed and the turning acceleration of the turret are determined for each of the turning phases.