Abstract: A machining tool for use in machine tools for rotating cutting operations has a main body, which can be rotated about a center axis and which is elongate in the direction of the center axis, at least one cutting element fastened to the main body and at least one chip removal channel, which extends along the main body outside of the center axis and which is bounded inwardly by a core of the main body, through which core the center axis passes. The chip removal channel is outwardly closed at least over a longitudinal section by an outer chip space wall adjoining the core.

Abstract: This disclosure relates to a machine tool comprising a tool holder which rotates relative to a workpiece to be machined and has a tool axis, and a plurality of cutting inserts that are removably attached to the tool holder, the active cutting edges of said cutting inserts having a common cutting circle which is coaxial to the tool axis. According to this disclosure, the tool holder has a cylinder-type insert seat shell for radially positioning the cutting inserts, which rotates about the tool axis. The cutting inserts have at least one contact surface that can be brought into contact with the insert seat shell.

Abstract: A machining tool for use in machine tools for rotating cutting operations has a main body, which can be rotated about a center axis and which is elongate in the direction of the center axis, at least one cutting element fastened to the main body and at least one chip removal channel, which extends along the main body outside of the center axis and which is bounded inwardly by a core of the main body, through which core the center axis passes. The chip removal channel is outwardly closed at least over a longitudinal section by an outer chip space wall adjoining the core.

Abstract: This disclosure relates to a machine tool comprising a tool holder which rotates relative to a workpiece to be machined and has a tool axis, and a plurality of cutting inserts that are removably attached to the tool holder, the active cutting edges of said cutting inserts having a common cutting circle which is coaxial to the tool axis. According to this disclosure, the tool holder has a cylinder-type insert seat shell for radially positioning the cutting inserts, which rotates about the tool axis. The cutting inserts have at least one contact surface that can be brought into contact with the insert seat shell.

Abstract: A device for connecting two components (10, 14), for example two tool parts. The first component (10) has a cylindrical locating pin (12) and an annular face (22) projecting radially beyond this locating pin (12), while the second component (14) has a cylindrical locating bore (16) for receiving the locating pin (12) and an annular face (24) surrounding the locating bore (16). Also provided is a clamping mechanism (18), which ensures during the clamping operation that the locating pin (12) is drawn into the locating bore (16) and at the same time the annular faces (22, 24) are pressed against one another.

Abstract: The invention relates to a machining center for work piece machining. The machining center comprises a machine frame, a machine spindle driven by a motor and rotatably arranged on the machine frame, and a group of machine tools that can be exchanged on the machine spindle. The machine tools comprise a coupling shaft that is compatible with a holder of the machine spindle. Furthermore, a rotary transmitter for electric energy is provided, having a stator fixed to the machine in a stationary manner and a rotor rotating along with the machine spindle. It is claimed as novel that the rotary transmitter comprises at least two transmission paths for electric energy which can be selected according to the electric power to be transmitted and the rotational speed of the spindle to be set and which can be activated in the coupled state of the machine tool.

Abstract: A shaft tool for machine tools, has a shaft, a tool head disposed at a shaft end and equipped with at least one cutting element, and a coupling element disposed at the other shaft end for direct or indirect connection to a machine spindle. A peripheral groove extends along the circumference of the shaft and is open radially, and at least one spreading element engages in the peripheral groove and can be radially adjusted therein, resulting in the exertion of spreading and bending forced onto the groove flanks. The peripheral groove is filled with a filler material at least in the area of the spreading element, the filler material having both a sealing function against contaminants and a damping function. The filler material also acts as a rotation prevention for the spreading elements.

Abstract: A machine tool having a motor-driven machine spindle which can be rotated about a spindle axis. The machine spindle has a tool holder arranged at the face. A tool is exchangeably arranged on the machine spindle. The tool has a coupling element which is compatible with the tool holder of the machine spindle. The coupling element has a rear surface pointing toward the machine spindle. The machine tool has at least one galvanic contact point for the electric current or data transmission, the point being arranged between the machine spindle and the tool and rotating together with the machine spindle. The galvanic contact point has a contact element which is arranged at the face of the tool holder on the spindle side, and a contact element which is arranged on the rear surface of the coupling element on the tool side.

Abstract: The invention relates to a device for connecting two components (10, 14), for example two tool parts. The first component (10) has in this case a cylindrical locating pin (12) and an annular face (22) projecting radially beyond this locating pin (12), while the second component (14) has a cylindrical locating bore (16) for receiving the locating pin (12) and an annular face (24) surrounding the locating bore (16). Also provided is a clamping mechanism (18), which ensures during the clamping operation that the locating pin (12) is drawn into the locating bore (16) and at the same time the annular faces (22, 24) are pressed against one another.

Abstract: A junction between two components of a tool system, that rotates about an axis of rotation, includes a conical seat, on the first component, coaxial to the axis of rotation and which is defined by an annular front face. The second component carries a coupling having a conical surface complementary to the conical seat and an annular end face resting against the front face. A tie bolt axially projects beyond the free end of the coupling pin and engages, in a cavity adjacent to the seat. The junction also has tensioning elements that are actuated from the exterior for mutually bracing the components, which are radially guided in the first component, and which act upon the tie bolt and are functionally linked with joint actuating means for adjustment between detached and tensioned positions. The tensioning elements include ejection portions that can be fitted with a rotatably received rolling element.

Abstract: A junction between two components of a tool system, that rotates about an axis of rotation, includes a conical seat, on the first component, coaxial to the axis of rotation and which is defined by an annular front face. The second component carries a coupling having a conical surface complementary to the conical seat and an annular end face resting against the front face. A tie bolt axially projects beyond the free end of the coupling pin and engages, in a cavity adjacent to the seat. The junction also has tensioning elements that are actuated from the exterior for mutually bracing the components, which are radially guided in the first component, and which act upon the tie bolt and are functionally linked with joint actuating means for adjustment between detached and tensioned positions. The tensioning elements include ejection portions that can be fitted with a rotatably received rolling element.

Abstract: The invention relates to a machine tool comprising a motor-driven machine spindle which can be rotated about a spindle axis. The machine spindle comprises a tool holder arranged at the face. A tool is exchangeably arranged on the machine spindle. The tool has a coupling element which is compatible with the tool holder of the machine spindle. The coupling element has a rear surface pointing toward the machine spindle. The tool holder comprises a face arranged opposite of the rear surface of the coupling element. The machine tool comprises at least one galvanic contact point for the electric current or data transmission, said point being arranged between the machine spindle and the tool and rotating together with the machine spindle. The galvanic contact point has a contact element which is arranged at the face of the tool holder on the spindle side, and a contact element which is arranged on the rear surface of the coupling element on the tool side.

Abstract: The invention relates to a shaft tool for machine tools, comprising a shaft, a tool head disposed at a shaft end and equipped with at least one cutting element, and comprising a coupling element disposed at the other shaft end for direct or indirect connection to a machine spindle. A unique feature of the invention is that the shaft comprises a peripheral groove that extends along the circumference of the shaft and is open radially, and at least one spreading element that engages in the peripheral groove and can be radially adjusted therein, resulting in the exertion of spreading and bending forced onto the groove flanks. The peripheral groove is filled with a filler material at least in the area of the spreading element, the filler material having both a sealing function against contaminants and a damping function. The filler material also acts as a rotation prevention for the spreading elements.

Abstract: The invention relates to a machining center for work piece machining. The machining center comprises a machine frame, a machine spindle driven by a motor and rotatably arranged on the machine frame, and a group of machine tools that can be exchanged on the machine spindle. The machine tools comprise a coupling shaft that is compatible with a holder of the machine spindle. Furthermore, a rotary transmitter for electric energy is provided, having a stator fixed to the machine in a stationary manner and a rotor rotating along with the machine spindle. It is claimed as novel that the rotary transmitter comprises at least two transmission paths for electric energy which can be selected according to the electric power to be transmitted and the rotational speed of the spindle to be set and which can be activated in the coupled state of the machine tool.

Abstract: The invention relates to a junction (14) between two components (10, 12) of a tool system that rotates about an axis of rotation (16), especially for use in machine tools. The junction (14) comprises an at least partially conical seat (18), arranged on the first component (10), which is coaxial to the axis of rotation (16) and which is defined by at least one annular front face (20). The second component (12) carries a coupling part (22) which comprises a coupling pin (24) having a conical surface (32) that is complementary to the conical seat (18) and an annular end face (26) pointing towards the annular front face (20) and, in the coupled state, resting against the same. A tie bolt (36) axially projects beyond the free end of the coupling pin (24) and engages, in the coupled state, in a cavity (38) that is adjacent to the seat (18). The junction also has tensioning means that can be actuated from the exterior for mutually bracing the components (10, 12).