Milling method for the production of components

Milling method for the production of structural components from materials that are difficult to machine by chip-cutting, while producing depressions with at least one sidewall, especially for the production of integral bladed rotors for gas turbines, whereby the depressions especially form flow channels and the sidewalls especially form blade surfaces, whereby a milling tool is moved along at least one defined tool path or milling path for the milling, characterized in that, in addition to the or each tool path, at least one collision contour corresponding to the surfaces or edges of the at least one sidewall is defined and the position or orientation of the milling tool relative to the or each collision contour is monitored, whereby the position or orientation of the milling tool is changed and/or an error message is generated if at least one of the collision contours is damaged by the milling tool, and whereby the or each collision contour relates to the structural component to be produced.