A Chord Width Measuring Tool for High-pressure Turbine Guide Vanes

Abstract

The invention provides a high pressure turbine guide vane chord width measuring clamp tool comprising a base plate, a support seat is fixed on the base plate, a pressing head is vertically mounted on the support seat and is used for tightly pressing a vane in a vertical direction, a first measurement device and a second measurement device are mounted on the base plate, the first measurement device comprises a fixed device, a first groove used for erecting a first digital display caliper is arranged on the fixed device, the second measurement device is a measurement seat, and the measurement seat is provided with a second groove used for erecting a second digital display caliper. The vane is first tightly pressed in the vertical direction via the pressing head on the support seat on the base plate, and the vane is positioned and fixed via the fixed device on the first measurement device. Artificial interference factors of a hand held vane can be eliminated via a fixed structure. Then parts such as the first measurement device, the second measurement device and the like are used for switching a vane measurement basis from the vane to measurement parts, and the basis is enabled to be stable and accurate. The measuring tool can be used repeated, a large batch of vanes can be measured and inspected, vane measuring and inspecting efficiency can be greatly improved, false inspection and missed inspection can be basically eliminated, and reference can be provided for future design of engine vanes of the same kind.

Description

technical field [0001] The invention is a measuring instrument for fixing the guide vane of a high-pressure turbine of a certain type of engine, and measuring and inspecting the chord width of the vane. Background technique [0002] At present, the method of comparison measurement and inspection of standard parts is adopted, that is, the chord width is measured with a vernier caliper on a standard blade, and the value is recorded as the correct value. When other blades are to be inspected, the measured value is compared with the correct value to determine the Whether the blade chord width is processed qualified. Due to the complex structure and high precision of the guide blades of the high-pressure turbine, the blades cannot be fixed when holding the blades, which makes it very difficult for the inspectors to read the measured values. This inspection method is greatly disturbed by human factors, and it is easy to generate errors when reading values, and it is prone to fals...

AI Technical Summary

Problems solved by technology

Due to the complex structure and high precision of the guide blades of the high-pressure turbine, the blades cannot be fixed when holding the blades, which makes it very difficult for the inspectors to read the measured values

This inspection method is greatly disturbed by human factors, and it is easy to generate errors when reading values, and it is prone to false detection and missed detection of blades, which reduces the production pass rate of high-pressure turbine guide blades, resulting in low processing efficiency and increased production costs.

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