加工中心故障模式的可靠性分析  

Reliability Analysis of Failure Mode for Machining Center

作　　者：杨志伟[1] 任工昌[1] 孟勃敏[1] 

机构地区：[1]陕西科技大学机电工程学院,西安710021

出　　处：《组合机床与自动化加工技术》2011年第10期10-12,16,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家"高档数控机床与基础制造装备"科技重大专项(2009ZX04001-014)

摘　　要：根据采集的加工中心的故障数据,对加工中心的故障模式、故障部位及故障原因进行了故障分析。统计出各个子系统发生故障的概率,找出了故障发生的高频子系统,并深入对故障最频繁的CNC子系统进行了故障模式和故障原因的研究分析。在故障模式及影响分析的基础上对整机进行了危害度分析,通过危害度分析获得了影响加工中心可靠性的关键子系统及部件,确定了加工中心的可靠性薄弱环节,为加工中心进行可靠性设计提供了依据。According to the failure data of acquisition the machining center,the failure of machining center is analyzed from failure mode,failure part and failure reason.The failure probability of every subsystem is counted,to find out the subsystems of the high-frequency failure.Failure mode and failure reason are analyzed deeply for the most frequent failure of the CNC subsystems.Based on analysis on the failure mode and influence,was made the criticality analysis on the complete machine.Through the criticality analysis to obtained the key subsystems and parts of the reliability influencing processing center,to determine the reliability weak links of the machining center,so as to provide basis for the reliability design of machining center.

关 键 词：加工中心 故障模式 危害度 可靠性 

分 类 号：TH16[机械工程—机械制造及自动化]