Process, tool holder and device for turning workpieces

A tool receptacle for a tool for turning a face of a workpiece, wherein the workpiece is held in a workpiece receptacle rotating about an axis of rotation, and wherein the workpiece comprises on the face a workpiece contour to be produced or machined, said contour having convex and/or concave portions, wherein the tool receptacle is designed in order to align a blade of the tool in the cutting direction and/or transverse to the cutting direction opposite to the surface normals of the workpiece contour to be produced and/or machined, in such a way that an effective clearance angle α and an effective cutting angle γ remain at least virtually constant opposite the surface normals.

An apparatus for turning a face of a workpiece with a tool, with a workpiece receptacle rotating about an axis of rotation of a workpiece spindle, said receptacle being designed in order to hold the workpiece, and with a tool receptacle designed in order to hold the tool, wherein, for producing or machining a workpiece contour having convex and/or concave portions on the face, the workpiece receptacle and/or the tool receptacle is designed in order to move the tool and the workpiece back and forth relative to one another in an axial movement along the axis of rotation of the workpiece spindle, said axis being synchronized with the rotational movement of the workpiece, wherein the tool receptacle is further designed in order to align a blade of the tool in the cutting direction and/or transverse to the cutting direction opposite to the surface normals of the workpiece contour to be produced and/or machined, in such a way that an effective clearance angle α and an effective cutting angle γ remain at least virtually constant opposite to the surface normals.