基于试件疲劳寿命的内R成型铣刀铣削圆角参数优化  

Orifice Milling Parameter Optimization With Inner R Forming Milling Cutter Based on Fatigue Behavior of Workpieces

作　　者：罗扬[1] 于建华 李勋[1] LUO Yang;YU Jianhua;LI Xun(School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China;AECC Commercial Aircraft Engine Co., Ltd., Shanghai 200241, China)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中国航发商用航空发动机有限责任公司,上海200241

出　　处：《航空制造技术》2018年第22期92-97,共6页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51875028);国家科技重大专项(2018ZX04005001);航空科学基金资助项目(2016ZE51039)

摘　　要：在研究利用内R成型铣刀加工孔口圆角工艺方法的基础上,针对TB6高强度钛合金材料,设计并开展了基于铣削参数的正交疲劳性能测试试验,分析了内R成型铣刀的最大切削线速度vc、每齿进给量fz和切削深度ap对试件疲劳寿命的影响规律,得到对TB6钛合金材料疲劳极限影响最大的铣削参数是每齿进给量,其次是切削深度和线速度。基于试件的疲劳寿命测试数据对铣削参数进行优化,得到使TB6试件疲劳极限最高的铣削参数为vc=20m/min,fz=0.04～0.08mm/z,ap=0.1mm。Based on the process of orifice chamfer machining with inner R forming milling cutter,orthogonal milling experiments on TB6were carried out to analyze the influence of maximum cutting speed vc,feed per tooth fz and cutting depth ap on the fatigue life of test specimens.The results show that the effect of feed per tooth on fatigue life is more pronounced than the effects of cutting depth and cutting speed.Meanwhile,under the milling conditions of experiments,the milling parameters are developed as vc=20m/min,fz=0.04-0.08mm/z,ap=0.1mm,which can make the fatigue life longest.

关 键 词：内R成型铣刀 疲劳寿命 TB6 倒角 参数优化 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]