System for machining workpieces, machine tool, support device and workpiece support

A system for machining workpieces, comprising:

• a machine tool including a support device comprising a receiving device for workpiece supports, the receiving device being configured to be driven to rotate about an axis of rotation with respect to a base of said machine tool during a course of workpiece machining;
• a workpiece support which can be fastened to said receiving device and has a clamping device, via which a workpiece to be machined is fastened to said workpiece support, said workpiece support comprising a monitoring device configured to monitor a state of stress of said clamping device;
• wherein said support device and the workpiece support fastened to said receiving device are electrically coupled to one another via a contactless information transmission interface such that said monitoring device of the fastened workpiece support can transmit information about a state of stress monitored by said monitoring device, via said contactless information transmission interface to said support device,
• wherein:
• said support device and said workpiece support fastened to said receiving device are configured to be coupled to one another via an energy transmission interface for the transmission of hydraulic and/or pneumatic energy between said support device and said workpiece support.