Guide blade machining method

Abstract

The invention discloses a guide blade machining method. The throat equivalent deviation of cross sections of two ends of a to-be-machined guide blade blank is measured, a throat equivalent deviation average value of a blade basin margin plate end surface is obtained according to the throat equivalent deviation, a machining angle of the to-be-machined guide blade blank fixed on a blade basin wedgesurface machining fixture is adjusted, the throat equivalent deviation of the blade basin margin plate end surface is enabled to be in an allowable deviation range, and primary machining of the bladebasin margin plate end surface of the to-be-machined guide blade blank is completed; and a forming process of a part throat area is simulated with the blade basin margin plate end surface serving as main positioning measurement throat equivalent feature point deviation, the throat area of an assembly can be accurately controlled in a single-piece state, the blade basin margin plate end surface isrepeatedly machined until the throat equivalent deviation average value of the blade basin margin plate end surface is in the allowable deviation range, and the part is machined to the final size on the basis of the last machining angle. The requirement for throat area welding accuracy is met, a relative location relationship between a blade body of the guide blade and a margin plate is established, the throat area is accurately measured, and the design requirement of the throat area of a welding assembly is guaranteed.

Description

technical field [0001] The method is used for precision casting multi-joint welding guide vane processing, and in particular relates to a guide vane processing method. Background technique [0002] Engine high-pressure turbine guide parts often use multi-joint welded guide vanes. The throat area of ​​the guide vanes has a significant impact on the thrust-to-weight ratio of the engine and directly affects engine performance. is of great significance. The throat area of ​​multiple welded guide vanes becomes a fixed value when a single piece is welded into an assembly, and it is difficult to adjust it in the assembly state to meet the design requirements. At present, the throat equivalent of precision casting guide vanes is unstable, and the throat equivalent in the casting state cannot meet the design requirements. Multiple adjustments and designs are required, and the accuracy of the throat area of ​​the final component cannot be guaranteed. At present, the throat equivalen...

AI Technical Summary

Problems solved by technology

The throat area of ​​multiple welded guide vanes becomes a fixed value when a single piece is welded into an assembly, and it is difficult to adjust it in the assembly state to meet the design requirements

At present, the throat equivalent of the precision casting guide vane is unstable, and the throat equivalent in the casting state cannot meet the design requirements

Multiple adjustments and designs are required, and the accuracy of the throat area of ​​the final component cannot be guaranteed. At present, the throat equivalent of the guide vane is mainly controlled and adjusted through manual experience, which is difficult to adjust and control, and the adjustment accuracy is low and the efficiency is low.

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