Electrode for precise electrolytic forming of blade profile and processing method thereof

Abstract

The invention relates to a blade profile precision electrolytic molding electrode and a processing method. The blade profile precision electrolytic molding electrode comprises a blade back molding electrode, a blade basin molding electrode and a positioning clamping device, wherein the positioning clamping device is arranged on a transfer disk of a longitudinal Z axis of a machine tool; a blade workpiece is assembled on the positioning clamping device; the blade back molding electrode and the blade basin molding electrode are separately connected with feed motion shafts of X1 axis and X2 axis of an electrolytic machine tool; the blade back molding electrode and the blade basin molding electrode are subjected to die assembly; the blade back molding electrode and the blade basin molding electrode form sealing chambers with the positioning clamping device; the blade workpiece is closed in the sealing chamber; and the sealing chamber communicates with an external electrolyte pipeline through an electrolyte inlet and an electrolyte outlet. According to the processing method disclosed by the invention, zero-allowance processing of a blade profile is guaranteed; compared with a numerical control milling method, the processing method disclosed by the invention has the advantages that the cost of electrolytic processing is only 10 percent that of numerical control milling, and the efficiency of the electrolytic processing is three times or above that of the numerical control milling; and meanwhile, the processing quality of blade parts is guaranteed; and the processing method is suitable for large-batch production and has huge potential benefits.

Description

technical field [0001] The invention relates to a processing technology for the blade profile of an aero-engine compressor, in particular to a blade profile precision electrolytic forming electrode and a processing method. Background technique [0002] The principle of electrolytic machining is a non-traditional cutting method that uses the principle that metals can undergo anodic dissolution in the electrolyte to remove materials and shape workpieces. In electrolytic machining, the tool (knife) is connected to a DC power supply as the cathode and the workpiece as the anode. In the electrolyte, the cathode of the tool moves to the anode of the workpiece at a certain speed, and the charge exchange occurs between the tool and the workpiece. The material of the anode workpiece is dissolved and taken away by the high-speed flowing electrolyte, thereby achieving very precise processing requirements. [0003] Using electrolysis to process engine compressor blades has been widely ...

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Problems solved by technology

[0005] In view of the disadvantages of low efficiency, high cost, unstable quality, and inability to meet batch production requirements in the existing technology of machining airfoil profiles by CNC milling, the problem to be solved by the present invention is to provide a high-efficiency, low-cost, Electrode for precision electrolytic forming of blade surface and processing method for reducing a large amount of tool consumption and time occupied by numerical control equipment

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