A clamping unit, in particular for use in a machining center, or a turning or milling center, wherein the clamping unit comprises an external housing (12), preferably having a cylindrical basic design, an internal housing (15) accommodated in the external housing (12), and an internal cylinder (11) that is retained in the internal housing (15) such that it can be displaced in a vertical adjustment direction A when in the operating state, which is designed for transferring a pressure or tensile force for clamping purposes, wherein the internal housing (15) is supported in the external housing (12) by means of springs (13, 14), and is supported with respect to the external housing (12) such that it can be displaced in the adjustment direction A, and thus forms a spring force storage unit (21), and wherein an electric motor (16) is disposed inside the clamping unit, integrated therein, preferably encompassed by the external housing (12), furthermore, preferably accommodated inside the internal housing (15), in order to apply a force in the adjustment direction A to the internal cylinder (11) via drive means (17-20) disposed therein.

In an electrical plug-and-socket device for transferring electrical energy from an external source of current to an electrical load arranged in a body, preferably in a chuck body of a chuck, in particular an electrical drive motor for actuating the clamping jaws of the chuck, consisting of: —a socket possessing at least two accommodation openings, a body and an electrical load arranged therein, each of which is connected to the source of current via an electrical cable and of at least two plugs connected to the load by one electrical cable each, with the plugs arranged in the body and coupled to the particular accommodation openings of the socket during the electrical energy transfer, and in which the plugs can be removed from the accommodation openings following the energy transfer, and automatic plug-and-socket connection should be created.

A machine tool includes a drive unit driving a tool for machining a workpiece, and a control unit controlling the drive unit. The machine tool further includes an abnormality determining unit that determines whether machining can be continued, based on operation information of the drive unit, and a power failure detection unit that switches the power source of the control unit from a normal power supply unit to an emergency power supply unit if power failure is detected, and switches the power source from the emergency power supply unit to the normal power supply unit if recovery of power supply is detected after power failure. The control unit stops operation of the drive unit when power failure is detected, and thereafter, if recovery of power supply is detected, and the abnormality determining unit determines that machining can be continued, the control unit drives the drive unit, thereby automatically resuming machining.

A rotary cutting tool has a tool holder and a cutting portion releasably attached to the tool holder. The tool holder includes a mounting portion designed to be attached to a spindle. The rotary cutting tool also has a fluid channel and an energy harvesting arrangement which includes a turbine located in the fluid channel. The fluid channel opens out to a channel inlet opening, for the supply of fluid, located at the mounting portion and a channel outlet opening in fluid communication with the channel inlet opening.

An equipment, notably for machining, including a machine having at least one arm, and including at least one first effector which is configured to be coupled to a free end of the arm. The equipment is modular and includes a main interface which is configured to be carried by the free end of the arm and which is configured to be coupled to the first effector, at least one secondary interface which is configured to be coupled to the main interface, and at least one second effector which is configured to be coupled to the at least one secondary interface and to the main interface. The equipment further includes at least one power supply system which is configured to supply power to the at least one secondary interface.

A device and method using the electromechanical properties of piezoelectric materials to generate and deliver electrical power to a high speed electrically powered rotatable shaft. The device has a stationary module that is connected to an electrical source; and has a rotatable module, which is mechanically connected to the electrically powered rotatable shaft. The rotatable module rotates relative to the stationary module. When the stationary module is electrically energized, the stationary piezoelectric component expands and causes the rotatable piezoelectric component to compress. When the rotatable piezoelectric component compresses, it generates electrical power transferred to the electrically powered rotatable shaft. Thus, electrical energy can be delivered to the electrically powered rotatable shaft without a direct electrical connection. The present invention is particularly useful in applications requiring large diameter through-hole dimensions.

A working unit includes a tool rotation mechanism, a first turning mechanism turning the tool rotation mechanism about a first axis, and a second turning mechanism turning the tool rotation mechanism and the first turning mechanism about a second axis perpendicular to the first axis. The first turning mechanism includes a motor having a stator connected to the second turning mechanism and a hollow shaft-shaped rotor arranged inside the stator in such a manner that the rotor is capable of rotating about the first axis, and a second rotating body including one arm portion coupled to one end portion of the rotor, the other arm portion coupled to the other end portion of the rotor, and an arm coupling portion that couples the arm portions to each other. The tool rotation mechanism is provided on the second rotating body.

Communication system and machine device.

A communication system consisting of at least one data acquisition device (94) for acquiring sensor data of at least one machine device provided for cutting machining, preferably in real time, data collection device (102) for digitizing the collected data, and a data evaluation device (122) for the collected digitized data.

Device for handling and/or processing parts, having first and second subassemblies separably connectable by a connection interface that results from a first contact section of the first subassembly being plugged and/or pressed in a connecting direction onto a second contact section of the second subassembly in a first orientation specified relative to the second contact section. The connection interface includes an electrical interface for transmitting electrical power and/or communication signals between the subassemblies and a fluid interface for transporting fluid between the subassemblies. The first and second contact sections are configured so the connection interface also results if the first contact section is plugged or pressed in the connecting direction onto the second contact section in a further orientation. The further orientation corresponds to the first orientation aside from a rotation of the first contact section by a specified angle about a rotation axis running in the connecting direction.

The invention relates to a spindle device (100), comprising: a tool holder (14) for holding a tool or a tool interface; a spindle drive comprising a spindle rotor (130) for rotationally driving the tool holder (14); an electrical load (160), which is arranged on the side of the spindle rotor (130) facing the tool holder (14); and a coil unit (140) for supplying electrical energy to the electrical load (160); wherein the coil unit (140) is arranged on the side of the spindle rotor (130) facing away from the tool holder (14).