Measurement system for front and back edge positions of engine guide vane

Abstract

The invention discloses a measurement system for front and back edge positions of an engine guide vane. The system comprises a clamping device and a measuring device, the clamping device comprises a positioning mechanism and a compressing mechanism, the positioning mechanism and the compressing mechanism compress the two ends of the guide vane cooperatively, and a blade body positioning mechanismis positioned in an intermediate support blade in the guide vane. After that the clamping device clamps the guide vane, a measuring device measures the size in the front and back edge positions of a to-be-measured cross section. The measurement system designed aimed at the size in the front and back edge positions of the guide vane is simple in structure and convenient to operate and can detect the front and back edges of the vane in the whole cross section with high efficiency.

Description

【Technical field】 [0001] The invention belongs to the technical field of engine guide vane measurement, in particular to a measurement system for the front and rear positions of the engine guide vane. 【Background technique】 [0002] With the development of my country's aviation industry, the performance requirements of the engine are constantly improving, so the blade body curvature of the engine turbine blade is also increasing. see figure 1 , the leading edge and trailing edge of the turbine blade are composed of multiple spatial curves with large curvature changes, and the airflow flows through the surface of the airfoil profile, so the accuracy of the airfoil and the leading and trailing edges is very high. [0003] The general device for measuring the front and rear edges is to set a dial indicator frame at a fixed section, and use standard parts to align the back of the watch and detect the front and rear edges. However, this detection method has disadvantages: first...

AI Technical Summary

Problems solved by technology

However, this detection method has disadvantages: first, due to the limitation of the length of the part, the short blade can only detect two sections, and the long blade can detect three or four sections, and the detection range is limited; second, the detection section Many blades require many dial gauges, complex operation and low detection efficiency; third, the structure of the measuring tool is complex

Another detection method is to use three-coordinate measurement for detection. This method is only suitable for batch measurement of finished parts, not suitable for parts detection during process processing.

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