Tolerance Analysis and Control of the Aircraft Reduction Plate
In order to solve the problems such as component interference and excessive gap difference in the assembly of an aircraft deceleration plate component,this paper makes clear the deviation transfer path of multi-branch series and parallel coupling by analyzing the structure of the aircraft deceleration plate,proposes the assembly accuracy analysis target for assembly weak links and builds a simulation analysis model for the assembly tolerance of the aircraft deceleration plate based on VisMockup.The influences of the initial design tolerances on the assembly accuracy analysis targets are revealed.Finally,the key tolerance factors are optimized according to the influence weight.Comparing the success rate of assembly before and after optimization,the effectiveness of the optimal allocation strategy is verified.The results show that the characteristic tolerance of reducer B has a significant influence on the two analysis targets.The optimized error rates of the analysis targets are reduced by 36.25％and 42.5％.The assembly qualification rate of the aircraft deceleration plate is increased,which provides a theoretical basis and reference for the tolerance design of complex assembly parts.
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