Combined electrolytic machining tool cathode and method for improving flatness of machined bottom surface

A technology for machining tools and tool cathodes, which is used in machining electrodes, electrode manufacturing, electric machining equipment, etc., and can solve the problems that the radial size of the rectangular electrode cannot be further reduced, the diameter of the tube electrode is small, and the localization is reduced. Inhibits stray corrosion and overcutting, improves process economy, and results in quick and easy installation
CN112091338AActive Publication Date: 2020-12-18NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2020-12-18

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Abstract

The invention relates to a combined electrolytic machining tool cathode and method, and belongs to the field of electrolytic machining. The tool cathode comprises a knife handle, an insulating block,a current-conducting plate, an electricity leading screw and a fastening screw. The combined electrolytic machining tool cathode aims to solve the problems of stray corrosion, poor flatness of bottomsurface and the like generated when a rod-shaped cathode tool is used for machining a groove. The current-conducting plate with the thickness smaller than 1 mm is used, and a current-conducting area between a cutter and a machined surface is limited. Compared with a previous circular current-conducting area, the bottom current-conducting area is greatly reduced, electric quantity distribution of the bottom of a machining groove in the radial feeding direction of a tool cathode is equal everywhere, and the flatness of the bottom of the groove in electrolytic machining is effectively improved; and the long insulating boss and the insulating area with the width larger than that of the machined groove are designed, resistance and back pressure of electrolyte flowing through the machined surface from the bottom of the cutter are increased, flow field of the machining area is improved, and stray corrosion is effectively restrained.
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Description

technical field

[0001] The invention relates to a tool cathode and a method for suppressing stray corrosion and overcutting phenomena in the electrolytic machining process and improving the flatness of the processed bottom surface, belonging to the field of electrolytic machining. Background technique

[0002] The development level of the aerospace industry reflects the comprehensive strength of a country's economy and manufacturing industry, and the aerospace industry has put forward higher requirements for the performance of aircraft and engine structural parts and main materials. Due to the advantages of high-temperature alloys, titanium alloys and other difficult-to-machine materials, such as good rigidity, high specific strength, and relatively light weight, they have been widely used in the aerospace industry. For example, GH4169 material accounts for 34%, 56% and 57% of the total weight of CF6 engine, CY2000 engine and PW4000 engine respectively. However, due to the ...

Claims

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