Patent ID: 9682437
Date: 2017-06-20
CPC Classifications: B23H

Claim:
1. A method for the electrochemical machining of a blade of a turbomachine, wherein the method comprises using at least three multipart electrodes, each comprising at least three sub-electrodes which are lined up in a plane transversely to a plane in which the multipart electrodes are arranged, which multipart electrodes are moved with a main direction of movement toward the blade airfoil in a star-like manner from an initial position at a first distance from a surface to be machined to an end position at a second distance from an end contour of the surface to be machined so that in the end position a closed working surface of the electrodes with a negative shape lies opposite the end contour of the surface to be machined, the blade having a gas passage region and comprising shrouds at a blade root and/or at a blade tip, which shrouds are inclined on one side or on both sides so that undercuts exist in the gas passage region.