数控加工中心维修时间模型研究  

Maintain Time Model of CNC Machining Center

作　　者：张海波[1] 刘亮[1] 黄洋洋[1] 

机构地区：[1]东北电力大学机械工程学院,吉林吉林132012

出　　处：《组合机床与自动化加工技术》2014年第5期158-160,共3页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：因数控加工中心故障造成的停机是影响其工作效率的一个主要因素。为提高加工中心的工作效率,减少维修时间,文章运用origin8的绘图和Matlab的编程计算功能对某型号数控加工中心故障维修时间数据进行分析。首先绘制了加工中心故障维修时间的概率密度函数,然后由概率密度函数图形判断该函数可能符合的分布规律并进行参数估计,最终证明该型号数控加工中心故障维修时间符合对数正态分布规律,结合函数性质及故障数据,提出了减少数控加工中心维修时间的方法,为加工中心的维修提供了依据。Down time caused by CNC machining center failure is a main influence factor on its efficiency. In order to improve machining center and reduce maintenance time, origin 8 and matlab are used to draw, program, calculate and analyze its failure maintain time data. Firstly, machining center failure maintain time probability density function is drawn ; Secondly, the distribution of its function is judged and parameter estimation is done; Finally, the CNC machining center failure maintain time according to lognormal distribution is proved. Measures to reduce CNC machining center maintain time is proposed combining function nature with failure data. It provides basis for machining center maintain.

关 键 词：数控加工中心 维修时间模型 对数正态分布 

分 类 号：TH166[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]