# US 2022/0032384 A1 · Method for producing a plate of a turbomachine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0032384 A1 - Document ID: US20220032384A1 - Status: Published application - Kind: A1 - Application number: 17/051,997 - Filed: 2019-05-02 - Published: 2022-02-03 - Earliest claimed: 2018-05-02 - Assignees: MTU Aero Engines AG - Applicants: MTU Aero Engines AG - Inventors: Albin Platz; Martin Bussmann; Steffen Gerloff; Nicole Feiling; Anna Carina Kuepper; Norbert Huber; Hermann Klingels - Web page: https://patentgrep.com/patent/US20220032384A1 ## CPC - B23H 9/10: Working turbine blades or nozzles - B23H 3/04: Electrodes specially adapted therefor or their manufacture (B23H9/00 takes precedence) - F01D 5/02: Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 {; selecting particular materials F01D5/28}) - F01D 5/3007: {of axial insertion type} - F05D 2230/10: by removing material - F05D 2230/11: by electrochemical methods - B23H: WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract The present invention relates to a method for manufacturing a plate of a turbomachine having a plurality of receiving grooves, which are formed on the cylindrical peripheral surface of the plate in order to receive blade roots of blades of the turbomachine. The receiving grooves extend in a straight line from one face of the plate to the other face of the plate, such that a straight line delimits the receiving groove from each point on the cross section of the receiving groove on one of the faces to the corresponding point on the cross section on the other face. A circular plate is provided and a plurality of receiving grooves are introduced into the plate simultaneously on opposing regions relative to a central axis of rotation of the plate. ## Claims ### Claim 1 A method for producing a plate or disk of a turbomachine having a plurality of receiving grooves, which are formed on the cylindrical peripheral surface of the disk to receive blade roots of blades of the turbomachine, wherein the receiving grooves extend in a straight line from one face of the disk to the other face of the disk, such that a straight line delimits the receiving groove from each point of the cross section of the receiving groove on one of the faces to the corresponding point of the cross section on the other face, wherein a circular disk is provided, wherein a plurality of receiving grooves are introduced into the disk simultaneously in opposing regions relative to a central axis of rotation of the disk. ### Claim 2 (depends on 1) The method according to claim 1, wherein a plurality of receiving grooves are introduced into the disk simultaneously in opposing circle sectors relative to the central axis of rotation of the disk. ### Claim 3 (depends on 1) The method according to claim 1, wherein a plurality of receiving grooves are introduced into the disk simultaneously, uniformly distributed along the circular, ring-shaped periphery of the disk. ### Claim 4 (depends on 1) The method according to claim 1, wherein the plurality of receiving grooves, which are introduced simultaneously into the disk, are distributed along the circular, ring-shaped periphery of the disk such that a warping of the disk due to residual stresses is minimized. ### Claim 5 (depends on 1) The method according to claim 1, wherein all receiving grooves are introduced into the disk simultaneously. ### Claim 6 (depends on 1) The method according to claim 1, wherein the receiving grooves are introduced into the disk at least partially by electrochemical material processing. ### Claim 7 (depends on 1) The method according to claim 1, wherein the receiving grooves are introduced into the disk by an at least two-step processing, wherein at least the first step of the processing takes place simultaneously for a plurality of, preferably all of the receiving grooves and/or the first step of the processing takes place by electrochemical material processing. ### Claim 8 (depends on 7) The method according to claim 7, wherein the second step takes place by machining or by electrochemical material processing. ### Claim 9 (depends on 8) The method according to claim 8, wherein the electrochemical material processing in the second step takes place with an electrode that has a wedge-shaped operating region, whereby the wedge shape tapers in the direction of feed. ### Claim 10 (depends on 7) The method according to claim 7, wherein during the second step of the processing, only portions of the receiving groove are processed.