关键词: 可靠性驱动, 装配过程建模, 功能结构化分解

Abstract: To solve the problem that reliability control points were hard to be determined in current product assembly process，the structural decomposition mentality of "motor function-movement-action" based on the product basic motor function was proposed，and assembly process reliability control points were determined through analysis on each action's possible failures and influencing factors for reliability.To predict the data of the assembly process reliability，based on determining reliability control points，the relationship model between the key reliability control points data and the assembly process reliability data was established with grey system theory.The simulation value of the assembly process reliability data was calculated，and the model simulation precision was determined by analysis on the residual between simulation value and real value.The assembly process reliability data was predicted under the assumption that the simulation precision was meaningful.Numerical control rotary table　s assembly process of the numerical control machine tool　s functional unit was taken as an example to illustrate the feasibility of the research.

Key words: reliability-driven, assembly process modeling, function structured decomposition, grey system prediction