钛合金/CFRP叠层构件螺旋铣孔界面切削热研究  

Investigation of Cutting Heat of Interface in Helical Milling of Titanium and Carbon Fiber Reinforced Plastic Stack

作　　者：刘亚军[1] 李皓[1] 李士鹏[1] 唐心凯 朱圣富 张艳[1] 秦旭达[1] Liu Yajun;Li Hao;Li Shipeng;Tang Xinkai;Zhu Shengfu;Zhang Yan;Qin Xuda(The Ministry of Education Key Laboratory of Mechanism Theory and Equipment Design, Tianjin University, Tianjin 300350, China)

机构地区：[1]天津大学机构理论与装备设计教育部重点实验室

出　　处：《机械科学与技术》2019年第9期1406-1413,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家科技重大专项项目(2014ZX04001-081);天津市自然科学基金重点项目(16JCZDJC38300)资助

摘　　要：随着钛合金和复合材料(Carbon fiber reinforced plastic, CFRP)在航空航天制造业的应用比例逐渐增多,其叠层构件切削加工也成为研究热点。由于切削温度不仅影响刀具的磨损和耐用度,同时也会直接影响工件的加工精度和表面质量,本文在分析螺旋铣孔特点的基础上,对钛合金/CFRP叠层构件界面热传递机理进行了研究,建立了钛合金/CFRP叠层构件界面热传递模型,通过有限差分法对模型进行数值仿真求解;结合钛合金/CFRP螺旋铣孔实验,修正了刀具与工件的热传递系数以及工件界面温度传导率,通过钛合金/CFRP叠层构件螺旋铣孔切削热理论模型与试验结果对比,发现本文提出的理论模型分析结果和实验测量结果具有较高的一致性,能为钛合金/CFRP叠层螺旋铣孔加工工艺优化提供理论依据。With the increasing proportion of titanium alloys and carbon fiber reinforced plastics(CFRP) in aerospace manufacturing, the cutting of laminated components has become a research hotspot. Since the cutting temperature not only affects the wear and durability of the tool, but also directly affects the machining accuracy of the workpieces and the quality of the machined surface. Based on the principle of helical milling, the mechanism of interface heat transfer in drilling titanium alloy/composite is studied. The interface model for titanium alloy/composite stacks is established. The model is calculated with computer simulation. The titanium alloy/composite experiment was carried out, and the heat transfer coefficient between the tool and the workpiece and interface heat transfer coefficient were corrected and verified via experimental data. By comparing the thermal theory and the experimental results in helical milling of titanium alloy/CFRP stacks, the analysis results and experimental data presented in this paper high consistency, which can provide a theoretical basis for studying helical milling cutting heat in titanium alloy/composite materials stacks.

关 键 词：钛合金/CFRP 螺旋铣孔 热传递模型 数值仿真 界面温度传导率 

分 类 号：TG156[金属学及工艺—热处理]