| 摘要 |
A method of removing substance from the surface of a workpiece in which the removal of substance is effected layer-wise by irradiating a working site on the workpiece surface with a laser beam from a working head, the layer-wise removal of substance being carried out with the aid of a laser guidance guiding the laser across the surface of the workpiece within a working area predetermined by the apparatus, comprises positioning steps in which, after the start of the substance removal, the relative position of the workpiece and the working head are changed in accordance with a first and/or second criterion and adjusted so that a boundary of the working area comes to be disposed on different sections of the workpiece surface for identical working sites.
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