Measuring tool for rectifier channel and method for measuring rectifier channel

Abstract

The invention relates to a measuring tool for rectifier channels. The measuring tool includes an L-shaped base, a core shaft, a group of shaft sleeves and a floating meter-setting piece; a horizontal base and a vertical plate are welded to each other so as to form the base; the vertical plate is vertically fixed at one side of the horizontal base; a horizontal through hole is formed in the vertical plate; one end of the core shaft passes through the horizontal through hole and is connected onto the vertical plate; the fit clearance of the core shaft and the horizontal through hole ranges from 0 to 0.03mm; the shaft sleeves sleeve the core shaft; the fit clearance of the shaft sleeves and the core shaft ranges from 0.02 to 0.06 mm; the fit clearance of the shaft sleeves and component inner holes ranges from 0 to 0.45 mm; the floating meter-setting piece is arranged on the top surface of the vertical plate in a floating manner, and can be removed when not used; splicing can be carried out through a standard gauge block; one group of shaft sleeves is provided and is applied to the measurement of combined components and single components.

Description

technical field [0001] The invention relates to a measuring tool for a rectifier channel and a method for measuring the rectifier channel. Background technique [0002] Engines, especially aero engines, are unqualified due to surge, and need to be disassembled, repaired, and tested many times before they can be delivered for testing. According to the analysis, there are many reasons for this, but the manufacturing quality of the double-row rectifier is one of the important reasons affecting the performance of the engine. [0003] The double-row rectifier is an important part of the engine, and its function is to rectify and guide. like Figures 1 to 2 The double-row rectifier 1 uses a pin 2 to position and combine the front rectifier 3 and the rear rectifier 4. The inner rings of the front and rear rectifiers are welded by manual argon arc welding, and the outer ring is welded by electron beam welding. It is welded; the blanks of the front and rear rectifiers are integrate...

AI Technical Summary

Problems solved by technology

[0004] like Figures 1 to 2 , the front and rear rectifiers belong to the closed impeller, which is composed of 23 uniformly distributed blades and inner and outer hubs. The blade shape processing is measured by the sample, the channel bottom diameter φC size, the roundness error 0.3, and the cascade channel top diameter φD size Universal vernier caliper measurement, because the blade profile of the cascade channel is distributed along the φC and φD cylinder curves, the universal vernier caliper can only measure the mouth of the cylinder, the middle part cannot be detected, and the size cannot be controlled. The cylinder size is determined by Casting is guaranteed, but the actual blank cannot be done, and there is still a margin. Under the premise that the size of the bottom and top of the channel cannot be controlled, the area of ​​the channel will be reduced, which is inevitable

Images