Integral blisk electrolytic machining device and method for liquid supply to blade full contour

Abstract

The invention relates to an integral blisk electrolytic processing device and method for supplying liquid to the full contour of the blade, which supplies electrolyte to the blade basin, blade back, inlet side and exhaust side of the blade respectively, and belongs to the field of electrolytic processing. The clamp body is provided with a main liquid supply channel and an auxiliary liquid supply channel. The main liquid supply flow channel includes the leaf back flow channel and the leaf basin flow channel, respectively supply electrolyte for the leaf back and leaf basin processing area, and its liquid inlet is set on the back of the leaf back cathode and the back of the leaf basin cathode; the auxiliary liquid supply The flow channel includes the inlet side flow channel and the exhaust side flow channel, which respectively supply the electrolyte for the processing area of ​​the blade inlet side and the exhaust side, and the liquid inlet is set above the inlet side of the blade blank and below the exhaust side . The leaf back cathode, the leaf pot cathode, the whole leaf disk workpiece and the clamp body form a closed flow field pattern in which the electrolyte in each flow channel is independently controlled. The key of the invention is to supply liquid to the full profile of the blade, improve the uniformity of the flow field in the processing area, improve the processing stability and repeatability of the intake and exhaust edges, and realize the processing of the entire profile of the entire blade disc.

Description

technical field [0001] The invention relates to an electrolytic machining device and method for an integral blisk for liquid supply to the full contour of the blade, and belongs to the technical field of electrolytic machining. Background technique [0002] Electrolytic machining is a process that uses the principle of anodic dissolution of metal in the electrolyte, and processes the workpiece according to a certain shape and size with the help of a pre-formed cathode. Electrolytic machining has many advantages such as high processing efficiency, no loss of tools, good surface quality, and wide processing range. It has been applied in aviation, aerospace, weapons and other industries. [0003] The flow field is an important factor affecting the stability, surface quality and machining repeatability of electrolytic machining. A reasonable flow field design is the basis for the smooth progress of electrolytic machining. In the current method of electrolytic processing of the ...

AI Technical Summary

Problems solved by technology

In the current method of electrolytic processing of the whole blisk, GE and Ex-O-Cell of the United States use the side flow method to process the blisk. Integral block electrodes, so integral blisks with narrow cascade passages cannot be machined

Nanjing University of Aeronautics and Astronautics proposed a method of electrolytic machining of the overall blisk profile with a three-dimensional composite flow field (see the patent "Electrolytic machining device and method for an integral blisk profile based on a three-dimensional composite flow field", application number 201300453340.8 Applicant Nanjing Aerospace Inventor Liu Jiawan Longkai (Xu Zhengyang) and Zhu Dong), the flow field mode is combined with liquid supply from the intake side to the exhaust side and from the root to the tip of the blade, effectively solving the problem of uneven electrolyte distribution in the side flow flow field , but it is prone to lack of liquid at the exhaust side

Nanjing University of Aeronautics and Astronautics proposed a jig and method for electrolytic machining with independent liquid supply for blade partitions and air-tight layers (see patent "Electrolytic machining jig and method for blade partitions with independent liquid supply and air-tight layers", application number 201710201908.2 Applicant The inventor of Nanjing University of Aeronautics and Astronautics Zhu Dong Zhao Jibin Xu Zhengyang Liu Jia) This flow field method effectively improves the flow field stability of the processing blade at the intake and exhaust edges, and the upper and lower electrolyte flows along the tangential direction of the intake and exhaust edges. This technology is only suitable for blade processing, and cannot realize the processing of the whole blisk

Images