Special inner diameter measuring tool for exhaust component in aero-engine and use method thereof

Abstract

The invention relates to a special inner diameter measuring tool for an exhaust component in an aero-engine and a use method thereof. The measuring tool is used for measuring an inner diameter of theexhaust component in the aero-engine, and comprise a base, a mounting plate, a data meter and a lever, wherein the data meter is fixed to the mounting plate, a lever principle and the data meter are combined for use to perform relative measurement on the inner diameter size of a machining ring, and a tail nozzle can be directly measured on a machine tool without detaching parts during combinationmachining of the tail nozzle, so that the detaching frequency during measurement is reduced, machining errors caused by repeated clamping and repeated positioning are reduced, the measuring precisionand the machining precision of the exhaust component are improved, the machining period can be shortened, the production cost is reduced, and the product percent of pass is improved. The measuring tool is simple in structure, safe and reliable.

Description

technical field [0001] The invention relates to the field of aviation equipment precision control, in particular to a special internal diameter measuring tool for an exhaust component in an aero-engine and a method for using the same. Background technique [0002] A certain type of aero-engine cannot be installed due to the high crack failure rate of exhaust components, and there is no self-made capability in China. Therefore, it is urgent to form the development capability of exhaust components to ensure the power demand of the aircraft. The machine-added ring in the tail nozzle is a connecting structural part to ensure the accurate assembly of the exhaust assembly and other structures of the engine. The combined processing accuracy is high, and its processing quality directly affects the force of the product during assembly, the life of the product and the safety of the whole machine. . [0003] Due to the large working space required by the traditional inner diameter mic...

AI Technical Summary

Problems solved by technology

[0003] Due to the large working space required by the traditional inner diameter micrometer in the assembly process of exhaust components in aero-engines, it cannot be placed in the machine tool. It is necessary to disassemble the exhaust components from the machine tool several times for measurement, and repeat the clamping and positioning when continuing to process. There will be errors, and due to the complex structure of the exhaust assembly, it takes a lot of time to disassemble and assemble, which seriously increases the risk of scrapping and reduces production efficiency

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