Abstract: A tool-electrode for machining an imprint in a conductive part by sinking-die type electrical-discharge machining. It includes a conductive body having lower and upper opposite surfaces, two opposite main lateral surfaces, lower and upper areas superposed according to a die-sinking direction of the tool-electrode, the lower area comprising the lower surface and a portion of the main lateral surfaces, the upper area including the upper surface and the other portion of the main lateral surfaces. The body is provided, at least in the lower area, with a plurality of openings selected from among channels or slots; a channel is an opening which opens onto at least one of the upper and lower surfaces; a slot is an opening which opens onto the lower surface and onto the two main lateral surfaces.

Abstract: Tooling for producing scallops and fastening holes of a clamp of a disc by electrochemical machining using an electrolyte, the tooling having: an annular support tray to receive the disc; lower and upper shields configured to protect the disc from splashes of the electrolyte; a clamping lock to hold the disc in position during machining; and a die-sinking tool having in a substantially cylindrical insulating body a first and a second coaxial conductive cathode, the first and second cathodes rigidly fastened to each other, the first annular cathode including at an external periphery a plurality of radial machining protrusions of a shape complementary to that of the scallops to be machined and the second cathode includes, on the same circumference external to the first cathode relative to the central axis of the disc, a plurality of axial machining nozzles of a shape similar to the fastening holes to be machined.

Abstract: Tooling for producing scallops and fastening holes of a clamp of a disc by electrochemical machining using an electrolyte, the tooling having: an annular support tray to receive the disc; lower and upper shields configured to protect the disc from splashes of the electrolyte; a clamping lock to hold the disc in position during machining; and a die-sinking tool having in a substantially cylindrical insulating body a first and a second coaxial conductive cathode, the first and second cathodes rigidly fastened to each other, the first annular cathode including at an external periphery a plurality of radial machining protrusions of a shape complementary to that of the scallops to be machined and the second cathode includes, on the same circumference external to the first cathode relative to the central axis of the disc, a plurality of axial machining nozzles of a shape similar to the fastening holes to be machined.