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| Design of Adaptive Machining Fixture for Large Aircraft Structural Part Based on TRIZ |
| LIU Shi, MA Fei, CHU Fushun |
| AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610091, China |
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Abstract Large aviation structural parts have the characteristics of complex structure, small wall thickness and large material removal rate, which are easy to produce machining deformation and have a great influence on product quality. Due to technical blockade, imported raw materials with better performance are difficult to obtain and costly. Because of the uneven distribution of residual stress, the machining deformation of domestic blank is uncontrollable, which makes the problem more prominent. On the basis of analyzing the machining deformation mechanism and the current process scheme, the technical conflicts are found by using the analysis tool of TRIZ innovation theory. Based on contradiction matrix and innovation principle, a solution of "adaptive clamping of aircraft large structural parts" is proposed. In practical application, this scheme can effectively avoid the deformation of parts and improve the clamping efficiency, reduce the production cost, achieve remarkable results.
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2021, 
