Sauer Gmbh

Dmg Mori Ultrasonic Lasertec Gmbh

Manuel Praetorius

Jens Ketelaer

Gaston Schwenk

Florian Feucht

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

Spindle device and machine tool having a spindle device

A method for processing a workpiece on a numerically controlled machine tool by a tool includes the steps of: controlling a relative movement of the tool relative to the workpiece for processing the workpiece, producing an ultrasonic vibration of the tool by an ultrasonic generator, detecting at least one sensor signal outputted from the ultrasonic generator and identifying a change in the material at the workpiece while controlling the relative movement of the tool relative to the workpiece on the basis of the at least one sensor signal outputted from the ultrasonic generator.

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Munich, Georgia

Manuel Praetorius