The high-precision measurement of blade profile has always affected the development of domestic aeroengine manufacturing industry. However, the traditional measurements have gradually failed to meet the increasing requirements of blade manufacturing accuracy. Aiming at the problem of detecting the aeroengine blade profile, the AGILITY multi-axis compound measuring machine is used in this paper. A measurement combining contact and noncontact is proposed, the practical test technology of blade is studied. Finally, the feasibility of the method is verified by analyzing the results. A technical scheme for the detection of blade profile of domestic aeroengine is provided.
The casing is one of the key components in the aeroengine. It is a typical complex thin-walled structure, and has the characteristics of large component size, many structural elements, complex profile, huge measurement workload, thin structure and easy deformation, and high precision. The requirements of measuring efficiency and measurement accuracy are getting higher and higher. At present, the three-coordinate measuring machine (CMM) is widely used to measure aeroengine casing in China's aeroengine manufacturers. Taking some casing as an example, CMM is required to measure 256 items, and the measuring period is more than 1 day. In order to reduce the workload and improve the efficient in measuring aeroengine casing, the research develops a multi-axis measuring system based on a high-precision turntable, which has been improved to meet the performance. At the same time, the error of the multi-axis measurement system is discussed to achieve high precision and high efficiency measurement.
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