关键词: 五轴加工, 串并联多工序, 状态空间方程统计特征, 在线检测成本

Abstract: To balance the problems of quality and cost in a multi-process manufacturing system,the solution of online test fixture which had affected the quality and cost indirectly was proposed.In this solution method,the characteristics of error in the testing fixture were analyzed,and the error transfer model was established with the state space method.The cost of on-machine testing fixture was analyzed,the testing cost model was established by significance test method,and the testing cost was integrated into the cost model including the tolerance cost and the quality loss cost.On this basis,the optimization function which took the cost model as the objective function and the error transfer model as the constraint condition was proposed,and the optimal cost for the part to meet the quality was found out.By taking the quality cost of two kinds of parts processing as an example,the validity of on-machine testing fixture was verified.

Key words: five-axis machining tool, series-parallel mixed multi-process, statistical characteristics of state space equations, online detection cost