Ultrasonic-assisted precision electrolytic grinding system and method for turbine mortise

Abstract

The invention discloses an ultrasonic-assisted precision electrolytic grinding system and method for a turbine mortise, and belongs to the technical field of electrolytic grinding combined machining.According to the present invention, during the process of electrolytic grinding the turbine mortise, a multi-dimensional ultrasonic vibration effect is added, a working fluid flow field in a gap is improved, the loss of a tool grinding wheel is reduced, and the high-quality and low-cost machining of the turbine mortise structure are realized. The ultrasonic-assisted precision electrolytic grindingsystem is constructed, and all-direction vibration of multi-dimensional ultrasound is regulated and controlled through a control computer, the follow-up ultrasonic vibration effect of the tool grinding wheel in a feeding direction is achieved and is coupled with the parameters of an electrolytic machining pulse power source, so that the stability of the machining process is guaranteed, and the reliable guarantee is provided for the application and popularization of the electrolytic grinding machining technology in the turbine mortise structure machining process. By replacing the tool grindingwheels and the working fluid nozzles of different structures, the system and the method are suitable for the precision machining of the turbine mortise structures of different types.

Description

technical field [0001] The invention belongs to the field of electrolytic grinding composite processing, and relates to a turbine tenon groove ultrasonic-assisted precision electrolytic grinding processing system and method, in particular to a control computer to regulate multi-dimensional ultrasonic vibration and electrolytic processing pulse power parameters A high-quality and low-cost machining system and method for a turbine tenon-groove structure are coupled together. Background technique [0002] In the split turbine rotor, the blades and the turbine disk are connected by a mortise joint structure. The mortise and groove structure on the turbine disk has high requirements for dimensional tolerances and shape and position tolerances, which brings great challenges to the manufacturing process. . The machining process of the turbine tenon-and-groove structure is complicated. Usually, after the preliminary grooving is completed, corresponding rough and finish machining is...

AI Technical Summary

Problems solved by technology

The size of the turbine tenon and groove structure is small and the cross-sectional shape is complex. Using a large-diameter grinding wheel cannot meet the processing requirements. When using a small-diameter imitation grinding wheel for processing, the working fluid cannot flow smoothly into the processing gap, which leads to aggravated problems such as grinding wheel wear and grinding heat. , and even cause a short circuit, damage tool grinding wheels and anode workpieces

This problem seriously restricts the promotion and application of electrolytic grinding technology in the process of turbine tenon and groove machining

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