Turbine tenon groove ultrasonic assistance precise electrolysis grinding method

Abstract

The invention discloses a turbine tenon groove ultrasonic assistance precise electrolysis grinding method, and belongs to the technical field of electrolysis grinding. The method is to assist an ultrasonic vibration effect in the turbine disc tenon groove electrolysis grinding process; and under driving by ultrasonic vibration, when a tool grinding wheel is near a maximum machining gap, an electrochemical corrosion effect is used for accelerating formation of a passivation film on a tenon groove machining surface. When the ultrasonic vibration drives the tool grinding wheel to be near a minimum machining gap, a mechanical grinding effect is used for scraping off the passivation film on the tenon groove surface, and a new basal body material is exposed out. The coordinated synchronization of ultrasonic vibration signal parameters and electric signal parameters is controlled to guarantee continuous and alternate implementation of the electrochemical corrosion process and the mechanical grinding process to achieve a precise machining effect of a turbine disc tenon groove structure.

Description

technical field [0001] The invention belongs to the technical field of electrolytic grinding, and relates to an ultrasonic-assisted precision electrolytic grinding processing method of a turbine tenon-groove structure, in particular to an alternate composite effect that can realize an electrochemical corrosion process and a mechanical grinding process. Ultrasonic-assisted precision electrolytic grinding processing method to achieve low-cost and high-quality processing of turbine disk tenon and groove structure. Background technique [0002] The turbine disk is one of the most severe and important hot-end components in the aerospace engine. It is the core part of the key component of the engine turbine, and its performance directly determines the overall performance of the engine. In the split turbine rotor, the working blades and the turbine disk are connected by a mortise joint structure. During the working process, the working blades and the disk are driven by high-tempera...

AI Technical Summary

Problems solved by technology

In recent years, some researchers have used small-diameter tool grinding wheels to conduct electrolytic grinding experiments on the tenon-groove structure of turbine disks. The results show that the machining of turbine tenon-groove structures can be achieved by using small-diameter tool grinding wheels, but the machining process is still unstable. , serious wear and tear of tool grinding wheels and other technical problems

Images