Throat equivalent adjusting device in turbine guide blade machining

Abstract

The invention discloses a throat equivalent adjusting device in turbine guide blade machining. The throat equivalent adjusting device comprises a U-shaped base, a U-shaped rotating base is rotationally connected between the two inner side walls of the U-shaped base, a positioning clamping mechanism used for clamping a to-be-machined blade is arranged on the upper end face of a bottom plate of the U-shaped rotating base, and a rotating shaft of the U-shaped rotating base is parallel to the Z axis of the to-be-machined blade; a cushion block and a height-adjustable supporting piece are arranged on the upper end face of the bottom plate of the U-shaped base, the cushion block and the height-adjustable supporting piece are arranged in a right opposite manner, the cushion block is located on one side below the bottom plate of the U-shaped rotating base, the height-adjustable supporting piece is located on the other side below the bottom plate of the U-shaped rotating base, and the height-adjustable supporting piece is connected with the other side below the bottom plate of the U-shaped rotating base; and a cylindrical rod right opposite to the cushion block is connected to one side below the bottom plate of the U-shaped rotating base, and a block gauge is arranged between the cylindrical rod and the cushion block. The throat equivalent adjusting device meets the requirements of blade subsequent welding and the area of a turbine guider throat after whole assembling.

Description

technical field [0001] The invention belongs to the technical field of machining turbine guide vanes of aero-engines, and in particular relates to a throat equivalent adjustment device in machining turbine guide vanes. Background technique [0002] The throat area of ​​the engine blade is to ensure the uniform exhaust volume of the blade passage, and the flow rate of the throat area is related to the thrust of the engine, which is an important factor affecting the performance of the engine. The blank state of the turbine guide vane is made of precision casting, and the entire blade body profile and inner and outer channel profiles are without margin, only the blade back wedge surface of the blade pot and the intake and exhaust edge plates need to be machined. In the machining of a single turbine blade, the angle and mutual position dimension between the blade body, the blade pot and the wedge surface of the blade back are directly related to the throat equivalent value of th...

AI Technical Summary

Problems solved by technology

[0003] Originally, during the grinding process, the positioning part of the blade body and the wedge-shaped surface of the processed blade pot were fixed and could not be adjusted. Due to errors and defects in the blade wool, the single blade after machining was welded with double blades in the later stage. Assemblies and guides assembled into a full circle, the throat area cannot meet the design requirements, and the selected blades need to be continuously measured, which is time-consuming and labor-intensive, and the labor intensity of the workers is high. This problem seriously restricts the delivery of blade products

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