MACHINE TOOL, IN PARTICULAR FOR RIM MACHINING

摘要

The present invention relates to a machine tool (1) for machining workpieces (20), having a workpiece support (19) for chucking the workpiece (20), a tool holder (22), which can be moved at least along one axis, for holding a tool (24) for machining the workpiece (20), and workpiece holding units (30) for fixing the workpiece (20) during the machining, wherein said workpiece holding units (30) are disposed outside the workpiece support surface (34) of said workpiece support (19), which is covered by said workpiece (20) in the chucked state and each have a holding element (31) for fixing said workpiece (20). In order that workpieces of larger diameters can thus also be machined with otherwise identical dimensions of the machine tool, it is provided according to the invention that the holding elements (31) can each be moved substantially parallel to the workpiece support surface (34) in the direction toward the workpiece (20), in particular in the direction toward a central workpiece axis (29), which runs perpendicular to the workpiece support surface (34), to center and fix the workpiece (20).