Method Of Forming A Recess In A Workpiece

Abstract

The present invention relates to a method for introducing a recess (3) into a workpiece (1), wherein the recess (3) is introduced with a processing cathode (2) by electrochemical ablation, wherein a flank (1.3) delimiting the recess (3) is exposed with the ablation, which flank extends from a first surface (1.1) of the workpiece (1) in the direction of an opposite second surface (1.2) of the workpiece (1), wherein a protective anode (7.1, 7.2) is arranged on at least one of the surfaces (1.1, 1.2) during removal, which protective anode is associated with the flank (1.3) and bears against the at least one surface (1.1, 1.2) in electrical contact with the workpiece (1), and wherein the protective anode (7.1, 7.2) is offset outwards relative to the flank (1.3), i.e. away from the recess (3).

Dependencies are inferred from the claim text.