System and method for machining integral blisks with auxiliary flushing electrolytic milling

Abstract

The invention relates to a blisk electrolytic milling machining system and method adopting auxiliary liquid flushing and belongs to the field of electrolytic milling compound machining. The blisk electrolytic milling machining system adopting auxiliary liquid flushing comprises a power source, a tool cathode (1), a main shaft (6), a blisk blank (2), a supporting shaft (5) and an auxiliary spray nozzle (10). The auxiliary spray nozzle (10) is provided with a section identical with a groove to be machined in shape and is right opposite to a to-be-machined face of the blisk blank (2). The tool cathode (1) is located between the auxiliary spray nozzle (1) and the to-be-machined face of the blisk blank (2), and initial intervals are kept between the tool cathode (1) and the auxiliary spray nozzle (1) and the to-be-machined face of the blisk blank (2). During machining, the tool cathode (1) and the auxiliary spray nozzle (10) supply electrolyte to the machining area of the blisk blank (2) atthe same time, and the pressure of the electrolyte in the auxiliary spray nozzle (10) is larger than that of the electrolyte in the tool cathode (1). By the adoption of the liquid flushing-assisted electrolytic milling machining system and method for the blisk, flow of the electrolyte in a machined area can be effectively restrained, the flow field uniformity in the machining intervals is improved, and the electrolytic milling machining efficiency and stability of the blisk are improved.

Description

Technical field [0001] The invention relates to a system and method for processing an integrated blisk with auxiliary flushing electrolytic milling and grinding, and belongs to the field of electrolytic grinding compound processing. Background technique [0002] The integral blisk is one of the core components of the new aero-engine, and its quality determines the performance and life of the engine. The integral blisk integrates the blade and the wheel disc, eliminating the need for traditional connection of tenon, tongue and groove and locking device, thereby reducing the number of parts and structural weight, avoiding the loss of overflow pressure, and making the aero engine work The efficiency and push-to-weight ratio have been greatly improved. The overall blisk is mostly made of difficult-to-cut materials such as titanium alloy and high-temperature alloy. The forging blank is generally short cylindrical. During the processing from the blank to the finished product, about 90...

AI Technical Summary

Problems solved by technology

However, due to the large flow resistance of the electrolyte in the machining gap and the rotation of the tool cathode during machining, a large amount of electrolyte will be lost rapidly in the processed area, resulting in a decrease in the electrolyte flow rate and uneven flow velocity distribution in the machining gap. It is easy to cause poor processing stability, which is not conducive to improving processing efficiency

This problem seriously restricts the promotion and industrial application of electrolytic milling and grinding technology in the field of rough machining of blisk slots

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