机床可靠性与维修性评定  

Evaluation of Reliability and Maintainability of Machine tools

作　　者：司俊山[1,2] 赵岩[1,2] 张大中 

机构地区：[1]哈尔滨理工大学 [2]黑龙江省建筑工程学校

出　　处：《哈尔滨理工大学学报》1997年第3期6-9,共4页Journal of Harbin University of Science and Technology

摘　　要：研究了机床可靠性与维修性，并进行了统计分析计算。结果表明，其可靠度函数呈指数分布，维修度函数呈二参数威布尔分布。平均无故障时间ＭＴＢＦ为４４９ｈ．平均修复时间ＭＴＴＲ为２２．１ｈ．各子系统中，方刀架的可靠性最好，电器系统的可靠性最差；电器系统的维修性最好，主轴箱的维修性最差。上述结果可为机床制造和机床使用提供参考。ln this paper, the reliabilty and maintainability of turret lathe are analysed statistically. The results show that reliability function is exponential distribution and maintainability function is two parameters Weibull distribution. The mean time between failure (MTBF) is 449 hours, and the mean time to repair (MTTR) is 22. 1 hours. ln its subsystems, the MTBF of tool post is smallest and that of electric system is biggest; the MTTR of electric system is smallest and that of headstock is biggest. These results may be referred to for manufacturing and using of machine tools.

关 键 词：机床 可靠性 维修性 统计分析 可靠性函数 

分 类 号：TG502.7[金属学及工艺—金属切削加工及机床]