A method for the machining of workpieces that have an unknown workpiece geometry with a tooling machine, said method having the steps of clamping of the workpiece in a clamping device on the tooling machine, execution of a manually guided 3D line scan with a measurement sensor within the tooling machine to determine the workpiece geometry in a first dataset, processing of the first dataset to compensate for errors in the manually guided 3D line scan in order to obtain a second dataset, use of the second dataset for 3D CAD surface generation by the tooling machine for the generation of a rough component geometry, use of the rough component geometry for the generation of scan paths for an automatic 3D line scan, execution of an automatic 3D line scan of the workpiece with the measurement sensor within the tooling machine in order to obtain a third dataset, use of the third dataset for 3D CAD surface generation for the generation of a precise component geometry, and automated machining of the workpiece by the tooling machine based on the precise component geometry, and a tooling machine for the execution of the method are provided.