Device and method for electrochemically removing a surface of a component

A method for electrochemically removing a surface of a component, the method comprising the following steps:

• providing a preformed component having an oversize dimension;
• providing at least one electrode, the electrode having an outer contour corresponding to a surface of the component to be produced;
• providing a hydraulic pressure device including a housing, a pressure piston disposed within the housing and coupled to the electrode such that the electrode moves with the pressure piston, and a hydraulic chamber disposed between the housing and the pressure piston, the hydraulic chamber being fluidically encapsulated with respect to the pressure and configured to receive a hydraulic medium and operatively connected to the pressure piston such that the pressure piston is acted upon with an actuating force by the hydraulic medium so that the pressure piston can be moved in a first direction in relation to the housing;
• arranging the component and the at least one electrode in relation to one another in an electrolyte;
• and
• removing the surface of the component at least in the area of the oversize dimension by applying an electric voltage and/or an electric current between the component and the at least one electrode, wherein the pressure piston is brought into operative connection with the hydraulic chamber of the hydraulic pressure device, and the pressure piston is acted upon by an actuating force by the hydraulic medium at least temporarily while the surface of the component is being removed and the pressure piston is moved in relation to the hydraulic pressure device;
• wherein the pressure piston is moved linearly by a ring-shaped solid state joint that is connected to the housing of the hydraulic pressure device at its inner and outer circumferences.