Low pressure turbine blade shroud processing device and method

Abstract

The invention relates to a low pressure turbine blade shroud processing device and method, and belongs to processing of a low pressure turbine blade of an aircraft engine. The device comprises a numerical control single side creep feed grinder, a rolling wheel, a super-soft grinding wheel with big pores and a fixture, wherein the rolling wheel is mounted on the dresser roller shaft of the numerical control single side creep feed grinder; the super-soft grinding wheel with big pores is mounted on the main shaft of the numerical control single side creep feed grinder; the fixture is mounted on the working table of the numerical control single side creep feed grinder; the rolling wheel is provided with a first grinding area and a second grinding area; the structure of the first grinding area is the same as that of the shroud middle, the exhaust side sealing labyrinths and the air inlet side sealing labyrinths of the low pressure turbine blade; the structure of the second grinding area is the same as that of the air inlet margin plate of the lower pressure turbine blade; a shroud machined profile formed by dressing of the rolling wheel is formed in the end surface of the super-soft grinding wheel with big pores; a diversion trench is formed in the top positioning block of the fixture. According to the low pressure turbine blade shroud processing device and method, the low pressure turbine blade shroud structure can be processed only through one processing procedure.

Description

Technical field [0001] The invention relates to the technical field of processing low-pressure turbine blades of aeroengines, in particular to a device and method for processing the crown of low-pressure turbine blades. Background technique [0002] The crown and top processing of low-pressure turbine blades has always been a difficult point in turbine blade processing. The main difficulty is that the sealing structure is more complicated, the size is large, the margin of the tip is large, and the size of the finished product is relatively thin, generally 0.3~1.0mm , So it is easy to produce burns and cracks during processing. [0003] Currently, the crown processing of low-pressure turbine blades includes four processes: figure 1 Shown is the crown of the low-pressure turbine blade with a margin. The crown of the low-pressure turbine blade with a margin is processed as follows figure 2 As shown, the first process is to grind out the crown center 1, the second process is to grind ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the four processes of processing the crown of the low-pressure turbine blade in the prior art, different rollers need to be replaced, and the low-pressure turbine blade needs to be re-clamped, so that the size of the low-pressure turbine blade is unstable, the processing efficiency is low, and Since the thickness of the sealing teeth is relatively thin, burns and cracks are easy to occur in the process of processing the sealing teeth. On the one hand, the present invention provides a crown processing device for low-pressure turbine blades. The crown of the low-pressure turbine blades Processing equipment includes:

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