Komet Group Gmbh

Komet Praezisionswerkzeuge Robert Breuning Gmbh

Roland Hoerl

Juergen Fronius

Heiko Graf

Wolfgang Bierl

Ewald Hasselkuss

Gerhard Scheer

Gerhard Stolz

Erich Feil

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. At least one first transmission path between the stator and rotor is designed in a non-contact way, while at least one second transmission path between the stator and rotor is provided with contacting contacts. With said measures, complete machining of the workpieces can be made possible when clamped in the machining center.

Machining center having rotary transmitter for electric energy

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.

Machine tool comprising a machine spindle, a tool holder and a contact point for electric current or data transmission

A tool head includes a working slide which can be adjusted relative to a basic body, and an electric adjusting motor which acts on the working slide via gears. The motor includes a stator and a rotor which runs round in the stator, bears an output shaft and is mounted in two pivot bearings arranged at a distance from one another, wherein one of the pivot bearings is arranged with an outer ring in a basic body-mounted stator housing and with an inner ring directly or indirectly on the output shaft.

Tool head with adjusting motor

The invention relates to a rotary transmitter for example for use in machine tools with adjusting tools. The rotary transmitter comprises a stator part () and a rotor part (), each having a respective stator core part () and a rotor core part (), which are separated from one another at mutually facing ends via an air gap, and each having at least one respective power winding (), which is wound on the stator core part and the rotor core part, in order to transmit power using the transformer principle, and having respective stator and rotor coupling turns (&#x2033;), which are associated with one another in pairs, for inductive data transmission. One aim of the invention is to transmit data without interference. A further aim is a low maintenance requirement. In order to achieve this, the invention primarily proposes that the coupling turns (&#x2033;) are separated from the area of the power winding (), and are shielded from them, by parts of the respective core parts (), and are arranged in the associated stator part and rotor part () in each case forming a three-dimensioned curved loop.

Rotational transmitter

The invention relates to a tool head for machine-tools comprising a base body () rotatable around an axis of rotation (), a slider () which bears a cutting tool and is adjustable with respect to the base body () along an axis of displacement () oriented radially with respect to the rotation axis () with the aid of a drive mechanism and at least one balancing body () for damping the unbalance caused by the slider (). The aim of said invention is to damp the unbalance and to reduce operating forces. For this purpose, at least two balancing body () whose center of gravity () is offset on the side of the axis of displacement () are guidable and/or pivotable with respect to the slider and the base body at points remote from each other.

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Boennigheim, Germany

Roland Hoerl