Electrolysis Method and Cathode System for Spin Printing of Bosses with Different Heights on the Surface of Rotating Body

Abstract

The invention relates to a rotary marking electrolytic machining method of different-height bosses on the surface of a revolved body, and a cathode system, and belongs to the field of electrolytic machining. The method comprises the following steps that a revolved body tool cathode is adopted, grooves in different depths are formed in the surface of the cathode, and only the side walls of the interiors of the grooves are insulated; the bosses with the identical heights are sequentially divided into I type, II type, III type and the like from small to large according to the heights of the bosses machined on the surface of a workpiece; in the machining process, an electrolyte rushes into a machining area from the side surface, all the cathode grooves are filled with gas simultaneously, and the end surfaces of the bosses are prevented from being corroded; when the feeding amount of the cathode meets the machining requirement of the I type of the boss, a reversing valve in circuit I is switched, the groove corresponding to the I type of the boss is filled with the electrolyte, the end surface of the I type of the boss is continuously dissolved with the feeding of the cathode, and the heights of the bosses tend to be constant; and similarly, with the increase of the feeding amount, reversing valves in other circuits are sequentially switched, and one-time machining on the different-height bosses on the surface of the whole part is completed.

Description

[0001] Technical field [0002] The invention discloses an electrolysis method and a cathode system for rotary printing of bosses with different heights on the surface of a rotating body, and belongs to the technical field of electrolytic processing. Background technique [0003] The casing is an indispensable part of an aero-engine. It plays the role of supporting the rotor, fixing the stator and protecting the internal structure of the core. There are many types, including fan containing casing, intermediate casing, compressor casing, and external duct machine. Casing, combustor casing, turbine casing, etc. Most of the casing parts are large-scale thin-walled rotary structures, and there are concave-convex structures with complex contours on the surface. In order to meet the working requirements of high temperature and high pressure, the materials are mostly made of difficult-to-machine materials such as high-temperature alloys and titanium alloys. [0004] At present, in a...

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Problems solved by technology

[0006] In actual production, the contours of the bosses on the surface of the casing are complex, and the heights of the bosses are also different; if a cathode tool with a hollow window is used for spin-printing electrolytic machining, only a single-height boss can be processed, and different heights cannot be achieved. The one-time processing and forming of the height boss limits the application range of spin-printing electrolytic machining

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