【摘要】 目的在研究刀具耐用度分布、分布特性及分布函数的基础上，讨论刀具可靠寿命与切削速度之间的关系及规律。方法用ＹＣ４０机夹可转位式刀片的刀具进行了大样本容量的刀具磨损耐用度分布切削实验，并做出切削时间与刀具后刀面磨损量之间的刀具磨损曲线。用正态分布和对数正态分布概率图处理实验得到的刀具磨损耐用度数据，并对分布参数进行了解析估计。结果建立了刀具磨损耐用度分布密度函数，并得到可靠度函数Ｒ（ｔ）和可靠寿命函数Ｔ（ｒ）．结论根据上述函数可求出不同切削速度下的可靠寿命，并实现刀具可靠寿命的预报．更多还原

【Abstract】 Aim\ Based upon the study of the distribution of cutting tool wear life, the distribution character and the distribution function, the relation between cutting tool reliability life and cutting speed was discussed Methods A large sample volume of cutting experiments about cutting tool wear life′s distribution was done, using cutting tool with mechanically fixed indexable insert YC40, and the cutting tool wear curve of cutting time vs flank wear was drawn At the same time, cutting tool wear life data obtained from experiments were processed with normal distribution and logarithmic normal distribution probability diagram, and the distribution parameters were analysed and estimated Results Cutting tools wear life′s distribution density function was established, and the reliability function R (t) as well as the reliability life function T (r) was derived Conclusion Through the above mentioned functions, reliability life at a certain cutting speed can be calculated, and predication about reliability life can be achieved更多还原