数控加工中心的可靠性分析与增长研究

Research on the Reliability Analysis and Growth of the CNC Machining Center

数控加工中心是现代机床制造业中进行复杂型面等快速高质加工的关键装备,可靠性存在于数控加工中心的全寿命周期的各个阶段,提高其可靠性显得尤为重要.针对国产数控装备可靠性不足的问题,以某系列立式数控加工中心为研究对象,对其长期所记录整理的故障数据进行了可靠性建模分析,通过故障模式、影响及危害度分析(FMECA)方法对其可靠性薄弱环节进行了研究,针对其中影响整个数控加工中心可靠性的关键部位,提出了可实现其增长的改进措施.

CNC machining centers is the most important equipment to modern machine manufacturing for fast processing of complex surfaces. The reliability present in all stages of the life-cycle of CNC machi- ning centers, so how to improve their reliability is very important. For the lack of the reliability on domestic CNC equipment problems, taking a series of CNC vertical machining center for the study, and made the reli- ability modeling and analyzed for the recorded fault data. Anslyzed the weaknesses of its reliability through Failure Mode, Effects And Criticality Analysis（FMECA） method. For the key parts which affect the reliability, proposed the effectively achieve for improvement of reliability growth.