面向大型数控机床的工艺可靠性评估  

Process reliability evaluation for large-sized NC machine tools

作　　者：邓超[1] 吴军[2] 毛宽民[1] 熊尧[1] 

机构地区：[1]华中科技大学数字制造装备与技术国家重点实验室,湖北武汉430074 [2]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《计算机集成制造系统》2010年第10期2250-2256,共7页Computer Integrated Manufacturing Systems

基　　金：国家自然科学基金资助项目(50975109)~~

摘　　要：针对大型数控机床结构和加工工况复杂、可靠性数据匮乏、造成大型数控机床的可靠性评估困难的问题,提出了一种基于加工过程动力学模型的工艺可靠性评估方法。通过实验识别大型数控机床动力学参数和切削力动态模型参数,建立了数控机床的加工过程动力学模型,通过拟合加工过程得到加工精度,进行工艺可靠性评估,并通过实验进行了验证。It was difficult to conduct reliability evaluation for large-scale Numerical Control（NC）machine tools due to its complex structure and lacking of reliability data.To deal with this problem,aprocess reliability evaluation method based on the processing dynamics model was proposed.After identifying dynamics parameters of the NC machine tools and cutting force dynamic model parameters,the processing dynamics model of NC machine tools was established.Then processing accuracy was simulated by the processing dynamic model.The process reliability evaluation was performed.Finally,it was verified by experiments.

关 键 词：数控系统 机床 工艺可靠性 评估 动力学模型 

分 类 号：TH165.3[机械工程—机械制造及自动化]