某种高速冲床外购件的可靠性分析与研究

Analysis and research of purchased parts reliability for certain high-speed punch

为提升高速冲床整体可靠性水平,将所含外购件视为整体,分析了高速冲床外购件对整机影响,建立了高速冲床外购件双重威布尔分段模型,计算时间拐点并检验,分别进行早期失效期、偶然失效期FMEA对比分析,提出了高速冲床外购件关键控制技术。同时,作为共性技术,对其它高速冲压设备外购件可靠性分析与控制具有指导意义。

In order to enhance the entire reliability of high-speed punch,the purchased parts were considered as a whole.The influence of purchased parts on high-speed punch was analyzed.Sectional model involving two Weibull distributions of purchased parts in high-speed punch was established.The calculation and test on inflection point were implemented.The FMEA of the early failure period and the random failure period were compared.And the key control technology on purchased parts of high-speed punch was proposed which is significant in reliability analysis and control of purchased parts in other high-speed punching machines.