Dynamic and real-time measuring method in airspace engine assembling process

Abstract

The invention relates to a dynamic and real-time measuring method in an airspace engine assembling process, and can effectively solve problems in the prior art that the measuring method is long in preheating and standby time, low in measuring speed, affected by surrounding ambient vibration and low in measuring accuracy. The technical scheme for solution comprises the following steps: 1. a central axis of an engine jet pipe is measured; 2. the central position of a bending pipe of the upper part of the engine jet pipe is measured; 3. a reference coordinate system for the engine jet pipe is established; 4. the central axis of a connecting pipe is measured; 5. the central position of the bending pipe of the upper part of the connecting pipe is measured; 6. the reference coordinate system for the connecting pipe is established; 7. the reference coordinate systems of the engine jet pipe and the connecting pipe are converted; 8. assembling is measured; and 9. anti-collision data of the engine jet pipe and the connecting pipe are measured and signals are outputted. The measuring method is short in preheating and standby time, high in measuring speed, not affected by surrounding ambient vibration and high in measuring accuracy so that the measuring method is an innovation on the dynamic and real-time measuring method in the airspace engine assembling process.

Description

technical field [0001] The invention relates to the field of industrial digital photogrammetry, in particular to a dynamic real-time measurement method in the assembly process of an aerospace engine. Background technique [0002] The aerospace engine is composed of an engine nozzle and a connecting pipe. Theoretically, the central axis of the engine nozzle is parallel to the central axis of the connecting pipe, and the center of the upper bend of the engine nozzle is equal to the center of the upper bend of the connecting pipe. In order to realize the dynamic assembly of the engine nozzle and the connecting pipe, the parallelism between the central axes of the two and the height difference between the center points of the upper elbow must be measured in real time. At the same time, in order to avoid collisions between the two during the assembly process, real-time anti-collision monitoring and early warning are required for the two. Conventional measurement requires a long w...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a dynamic real-time measurement method in the assembly process of the aerospace engine, which can effectively solve the problem of long warm-up standby time, slow measurement speed and vibration of the surrounding environment in the prior art. The influence of low measurement accuracy

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