Machining Method

A computer program product for generating a guide surface by stock removal by means of a machining apparatus including a control unit and/or regulating unit and a program-controlled data processing unit as well as a manipulator with a machining tool (2) for the manufacture of a three-dimensional structure (3) by machining the workpiece (1) in the region of a curved guide surface (4) comprising

• storing in a memory device of the data processing unit the geometry and/or the spatial position of the three-dimensional structure (3) to be manufactured in the workpiece (1),
• fixing a spatial coordinate and/or a surface vector of the guide surface (4) while taking account of the geometry and/or the spatial position of the three-dimensional structure (3) to be manufactured in the workpiece (1) the guide surface (4) being matched to the geometry and to the spatial position of the three-dimensional structure (3) in the workpiece (1) so that the machining tool (2) is not brought into contact with a marginal surface (5) bounding the three-dimensional structure on the machining of the workpiece (1) and the guide surface (4) is not arranged as a parallel surface and/or as an offset surface with respect to any marginal surface (5) and/or any end surface,
• guiding the machining tool (2) along the guide surface (4) while machining a machining region (6) of the workpiece (1) pre-set by the guide surface (4) for the formation of the three-dimensional structure (3) in the workpiece (1), and
• wherein the machining tool (2) is guided along the guide surface (4) at a constant guide angle (α) with respect to a guide axis (7).

A machining apparatus, in particular a multiaxial machine tool, specifically a multiaxial CNC machine for generating a guide surface, including a control unit and/or a regulation unit and a program-controlled data processing unit as well as a manipulator having a machining tool (2) for the manufacture of a three-dimensional structure (3) of a workpiece by machining the workpiece (1), and a computer program product implemented on the program-controlled data processing unit which

• stores in a memory device of the data processing unit a geometry and/or a spatial position of the three-dimensional structure (3) to be manufactured in the workpiece (1),
• fixes a spatial coordinate and/or a surface vector of the guide surface (4) while taking account of the geometry and/or the spatial position of the three-dimensional structure (3) to be manufactured in the workpiece (1), with the guide surface (4) being matched to the geometry and to the spatial position of the three-dimensional structure (3) in the workpiece (1) so that the machining tool (2) is not brought into contact with a marginal surface (5) bounding the three-dimensional structure on the machining of the workpiece (1) and the guide surface (4) is not arranged as a parallel surface and/or as an offset surface with respect to any marginal surface (5) and/or any end surface and
• guides the machining tool (2) along the guide surface (4) while machining a machining region (6) of the workpiece (1) pre-set by the guide surface (4) for the formation of the three-dimensional structure (3) in the workpiece (1), along the guide surface (4) at a constant guide angle (a) with respect to a guide axis (7).