摘要
本文中采用光弹试验法测得的刀具前刀面上的应力分布规律,根据作用于切屑上力的平衡条件,得出一种新的计算刀——屑接触长度及作用于前刀面上的最大正应力的计算公式。在得到的公式中,除考虑了前人所得公式中考虑的因素之外,又引进了刀具、工件材料等影响因素。若通过试验确定切削速度的影响系数,则该公式可以作为经验公式使用。
In this paper, based on the stress distribution pattern on rake face of cuttingtool obtained by photo - elastic method and the balance condition of forcesacting on chip, the authors have presented a new approach for determining thechip - tool contact length and maxinum normal stress on the rake face. The inf-luence of cutting tool and work piece materials have been added in it. If theinfluence coefficiate of cutting speed can be experimentally determined, theformulas will give useful results.
关键词
直角切削
刀具
切屑变量
金属切削
orthogonal cutting
chip-tool contact length
normal stress
approach
