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US 8,157,252 B2Granted
Machine tool
AssigneeSiemens Aktiengesellschaft
InventorsUwe Ladra, Gabriele Schmitt-Braess, Elmar Schäfers
Life of this patent
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Abstract
The invention relates to a machine tool, wherein the machine tool has a workpiece clamping device (10) for clamping a workpiece (9), wherein the workpiece clamping device (10) and in this way the workpiece (9) can be moved by means of a piezoactuator (11a, 11b, 11c, 11d). The invention furthermore relates to a corresponding method. The invention provides a machine tool in which vibrations occurring during a machining operation are reduced.
Claims11
Machine tool, comprising:
- a workpiece clamping device for clamping a workpiece;
- a tool for subjecting the workpiece to a machining operation;
- a piezoactuator moving the workpiece clamping device with the clamped workpiece, said piezoactuator rendered operative in response to a vibrational movement of the tool during the machining operation to cause the workpiece clamping device to follow the vibrational movement of the tool;
- and
- a control device operatively connected to the piezoactuator and constructed to control a difference in speed between a speed of the workpiece clamping device and a speed of the tool.
2 more elements
machine tool, comprising:
- a workpiece clamping device for clamping a workpiece;
- a tool for subjecting the workpiece to a machining operation;
- a piezoactuator moving the workpiece clamping device with the clamped workpiece, said piezoactuator rendered operative in response to a vibrational movement of the tool during the machining operation to cause the workpiece clamping device to follow the vibrational movement of the tool;
- and
- a control device operatively connected to the piezoactuator and constructed to control a difference in speed between a speed of the workpiece clamping device and a speed of the tool to zero.
2 more elements
Dependencies are inferred from the claim text.