Electrolytic machining device, electrolytic machining method and aero-engine

The invention discloses an electrolytic machining device, an electrolytic machining method and an aero-engine, the electrolytic machining device is used for fixing a cartridge receiver on electrolytic machining equipment, the electrolytic machining equipment comprises a main shaft chuck, a cathode and a machine tool rotating shaft, and the electrolytic machining device comprises a positioning plate, a clamping plate, a clamping plate and a clamping plate, the fixing piece is used for pressing and fixing the small end of the cartridge receiver on the positioning plate so that the cartridge receiver can be axially and radially positioned on the machine tool rotating shaft; and the sealing piece is used for being connected with the fixing piece and sealing the inner wall of the large end of the casing. The cartridge receiver does not need to be detached from a machine tool rotating shaft, measurement is directly conducted on a machine tool, the machining allowance is rapidly determined, the remaining machining t