A machining method for a high-pressure turbine rotor shaft

Abstract

The invention belongs to the technical field of machining and relates to a method for machining a rotor spindle of a high pressure turbine. Finish turning process is performed by using a rubber belt to wind parts, so that deformation of thin-walled workpieces is avoided. Spot facing machining tests cutting parameters, tool wear is controlled, and tool changing points are determined. Intensity check is performed on simulation test sheets through shot blasting so as to guarantee shot blasting intensity of the parts. The parts are subjected to static balance detection and superposition projection detection after processing. The method for machining the rotor spindle of the high pressure turbine includes the following steps of rear end positioning, front end half finish turning, front end positioning, rear end half finish turning, rear end positioning, front end finish turning, front end positioning, rear end finish turning, end face hole and fan-shaped groove machining, shot blasting, spigot finish turning, static balance detection, and superposition projection detection.

Description

Technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a mechanical processing method of a high-pressure turbine rotor shaft. Background technique [0002] The high-pressure turbine rotor shaft is a key part of an aircraft engine. The material nickel-based superalloy (Inconel718) has high hardness, high strength, corrosion resistance and high temperature resistance. [0003] The characteristics of parts processing are that the outer ends of the parts are overhanging longer, the wall thickness is thinner and the circumferential wall thickness change is strict, and the material removal amount is more than 70%. The cutting efficiency has a greater impact on the production cycle and cost. There are 6 lathe machining processes, the process is tedious, and each is the method of machining positioning reference, resulting in repeated duplication and superposition of the shape errors of the inner and outer circles. Secondly, it can't we...

AI Technical Summary

Problems solved by technology

There are 6 processes in lathe processing, the process is lengthy, and the method of processing and positioning reference each other leads to repeated duplication and superposition of the shape error of the inner and outer circles

Secondly, it is not possible to well control the deformation of the part due to the long distance between the cantilever arm and the positioning surface of the thin arm part, and the static balance required by the part design and the pass rate of superimposed projection detection are low.

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