双动力刀架系统可靠性建模方法研究  

Study on Reliability Modeling Method for Double Power Servo Turret System

作　　者：杜大伟 陈菲[2] 白强[1] 殷子强[1] DU Da-wei;CHEN Fei;BAI Qiang;YIN Zi-qiang(Institute of Oceanographic Instrumentation, Shandong Academy of Science, Shandong Qingdao 266001, China;College of Mechanical Science and Engineering, Jilin University, Jilin Changchun 130022, China)

机构地区：[1]山东省科学院海洋仪器仪表研究所,山东青岛266001 [2]吉林大学机械科学与工程学院,吉林长春130022

出　　处：《机械设计与制造》2019年第8期142-145,共4页Machinery Design & Manufacture

基　　金：国家科技重大专项项目—千台国产数控车床可靠性提升工程(2013ZX04011011);青岛市应用基础研究计划项目(15-9-1-53-JCH)

摘　　要：研究对21台双动力刀架进行了四年的连续跟踪记录,收集了79条故障数据,应用Copula函数进行相关故障下的可靠性建模。首先,对双动力刀架进行子系统划分,通过对故障及维修记录整理和分析,得出故障相关子系统。然后,依据传统建模方法得到每个子系统的两参数威布尔分布,并依次通过假设检验和拟合优度检验。最后,选取Gumbel Copula函数作为连接函数,建立了双动力刀架整体的可靠度数学模型。将新模型与传统的串联模型对比,验证了基于Copula函数的可靠性建模更加合理。This study gathers 79 failure data via continuously on-site tracing of 21 double power turret for more than 4 years,this reliability model was performed for the failures using the Copula function. First,dividing subsystems of double power turret,analyzing the failure and maintenance record,then obtaining the failure correlation subsystems. Then,this study establish two-parameter Weibull distribution of each subsystem based on the traditional modeling method,and passing the test of hypothesis and goodness of fit in turn. Finally,selecting the Gumbel Copula function as the linking function the reliability model of double power turret is established. This study compare new model with traditional series model,and it is verified that the reliability modeling based on copula function is more reasonable.

关 键 词：双动力刀架 可靠度模型 COPULA函数 故障相关 

分 类 号：TH16[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]