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Electrolytic machining method for thin-wall machine case of aero-engine

A technology of aero-engine and processing method, which is applied in the direction of electric processing equipment, electrochemical processing equipment, metal processing equipment, etc., can solve the problems of long processing cycle, difficult control of flow field, high requirements for power supply equipment, etc., and achieve one-time processing and molding , to solve the effect of unstable flow field

Active Publication Date: 2015-03-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of a single block electrode in the process of electrolytic processing and the technical problems of multi-process, multi-cathode, long processing cycle, difficult flow field control and high power supply equipment requirements in the current thin-walled casing processing of aero-engines. An electrolytic machining method for a cathode assembly and a thin-walled casing of an aero-engine, which uses a single integral electrode to process the casing profile at one time

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Embodiment Construction

[0017] The specific implementation process of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] like figure 1 As shown in the figure, the electrolytic machining method of aero-engine thin-walled casing by using a flexible strip-shaped cathode assembly mainly includes a workpiece anode 1, a flexible thin-walled strip-shaped cathode 2, a first shaft 5 for realizing electrode rotation and feeding, a driving wheel 4. The driven wheel 3 , the second shaft 6 , the synchronous belt 7 , the third shaft 10 , and the liquid supply nozzle 11 . The tool cathode 2 used is a flexible ring-shaped belt structure. During the processing, the first shaft 5 drives the driving wheel 4 to rotate at a constant speed, and the synchronous belt 7 drives the driven wheel 3 and the second shaft 6 to rotate synchronously, so as to realize the flexible thin wall. The uniform circumferential motion of the strip cathode 2; at the same time, the fir...

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Abstract

The invention provides an electrolytic machining method for a thin-wall machine case of an aero-engine, belonging to the technical field of electrolytic machining. The electrolytic machining method mainly aims at the machining of a surface concave-convex structure of a complicated thin-wall rotary body part in the aviation field, and is characterized in that a tool cathode is of a thin-wall strip-shaped structure or a rigid rotary body structure; window or lug boss structures with different shapes are distributed on the surface of the cathode. In a machining process, a workpiece anode automatically rotates and the tool cathode is fed to the anode in a peripheral movement process. In the whole machining process, electrodes do not need to be replaced, and the surface concave-convex structure of the thin-wall rotary body part is machined and molded once through rolling sleeve electrolytic action of a cathode window.

Description

technical field [0001] The invention provides an electrolytic machining method for a thin-walled casing of an aero-engine, which belongs to the technical field of electrolytic machining. Background technique [0002] In electrolytic machining, the tool cathodes used are mostly profiling block electrodes, and the linear feed of the block electrodes is used to realize the removal of workpiece materials. However, a single block electrode cannot meet the processing requirements in many cases, and it is necessary to continuously replace the electrode during the processing of complex rotating parts to meet the processing requirements. [0003] As an important part in aero-engine, the casing is a large thin-walled part with complex concave-convex profile. The outer surface of the casing has complex concave and convex shapes such as bosses, annular belts, and grids. Most of the materials are high-temperature heat-resistant alloys. In traditional machining, the tool loss is large, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H9/00B23H3/00
CPCB23H3/00B23H9/00B23H2400/10
Inventor 朱荻朱增伟王宏睿王登勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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