A method for cutting machining of turbine blades (1) on a multi-axis machine tool, the turbine blade (1) is held by a rotatable blade-root clamping device and a rotatable blade-tip clamping device (2) and is machined by means of a tool which is chucked in a tool spindle. A first profile section (4) which is adjacent to the blade tip is first of all machined by the tool and the tool is then removed. The tool spindle then grabs an already horizontal additional clamping device (5) which has clamping jaws (6.1, 6.2) adapted to the first profile section (4). The additional clamping device (5) is positioned on the blade-tip clamping device (2) in such a way that the clamping jaws (6.1, 6.2) rest in the first profile section (4). The tool spindle then grabs a tool and machines the remaining profile section with it.

The invention relates to a machine tool (1), in particular a dental milling machine or mill-turning machine, comprising a spindle (10) for receiving a tool and a working arm (12) for receiving a workpiece and comprising at least one nozzle (14a) attached to the spindle (10), in particular with its outlet direction (R) substantially parallel to the axis of rotation (A) of the spindle (10), characterized in that a deflecting body (16) is attached to the spindle (10) or clamped therein, said deflecting body extending in particular at least partially in front of the nozzle (14a). Further, the invention relates to a method of operating the machine tool (1).

The invention relates to a dental machining unit (1) having a milling chamber (10), wherein the workpiece arm (22) passes through a movement flange (24) at which the workpiece arm (22) passes through a passage wall (25) of the milling chamber (10), and that the passage wall (25) comprises a membrane (26) which permits movement of the workpiece arm (22) in at least two spatial directions and consists of a highly elastic material and particularly comprises corrugations (28).

A coupling element for a machine tool attachment, having a coupling section for detachable mounting on a tool interface of a machine tool and having a connection for attaching a container for media that has an outlet and holds a medium. In addition, a machine tool attachment, a machine tool, and a method for delivering a medium to a part of a machine tool is provided.

A machine tool includes: a turret configured to hold a tool through a clamp mechanism; a workpiece main spindle device configured to rotatably hold a workpiece; a switching unit configured to change a clamp state of the clamp mechanism by using rotation torque of the workpiece main spindle device; and an in-machine robot configured to move the switching unit. The clamp mechanism includes a torque input hole to which rotation torque is applied to change the clamp state. The switching unit includes an input shaft coupled with the workpiece main spindle device, an output shaft coupled with the torque input hole of the clamp mechanism and configured to output torque to the torque input hole, and a transmission mechanism configured to transfer, to the output shaft, the rotation torque of the workpiece main spindle device input through the input shaft.

A machine tool has a clamping device for clamping in workpieces to be machined, a work spindle which is movable relative to the clamping device, a tool magazine wherein tools for machining the workpieces are held available, the tools being selectively clamped into the work spindle, and a spindle gripper to be selectively clamped into the work spindle and being self-holding in its gripping position, said spindle gripper being held available in the tool magazine and being movable between a transfer position to the work spindle and an unloading station in which the spindle gripper releases a work piece remnant received from the clamping device.

A machine tool chip removal device including a coupling interface to couple with a rotatable spindle of a machine tool to facilitate rotation of the machine tool chip removal device about an axis at a rotational speed. The chip removal device can also include a main fluid channel with an opening to receive pressurized fluid from the machine tool. The chip removal device can further include a first fluid delivery channel and a second fluid delivery channel to direct fluid in different directions. Each fluid delivery channel can be in fluid communication with the main fluid channel. In addition, the chip removal device can include one or more valves associated with the first and second fluid delivery channels to selectively allow fluid passage from the main fluid channel to the fluid delivery channels. The one or more valves can be actuated by varying fluid pressure and/or rotational speed.

A tram adapter apparatus, kit and method is used with an alignment tool to check the alignment of the spindle and the table of a machine tool. The alignment tool has two or more indicators retained in a spaced apart relation to the spindle of the machine tool. A tram adapter body is interposed between the indicator body and the stop of one of the indicators, moving the indicator tip to a retracted position. The other indicator remains in the deployed position and may be used to tram the table of the machine tool to check the alignment between the table and spindle.

An alignment tool provides for aligning the spindle of a machine tool to a work holding feature of the machine tool. The alignment tool may include one indicator or may include a first indicator and a second indicator in a spaced-apart relation. The faces of the indicators are rotatable. In use, a machinist may attach the indicators to the spindle of a machine tool, advance the spindle or work holding feature until the indicator tips contact the work holding feature. The machinist can rotate the faces so that the machinist can read the indicator faces without placing the machinist's head within the envelope of tool movement of the machine tool.

A tool holder of a machine tool, in which the machine tool includes a spindle head and a spindle supported by the spindle head, includes: a shank portion attached to the spindle; a rotary portion integrally provided to the shank portion and to which a welding tool (processing tool) used for friction stir welding is attachable; a bearing mechanism (bearing) supporting the rotary portion so that the rotary portion is rotatable; and a bearing holder holding the bearing mechanism, in which the bearing holder is disposed facing the spindle head and is capable of transmitting a load applied to the bearing mechanism to the spindle head.