机械科学与技术2017，Vol.36Issue(11)：1641-1645,5.DOI:10.13433/j.cnki.1003-8728.2017.1101
CFRP/钛合金叠层构件钻孔刀具制孔质量对比研究
Comparison Study on Machining Property of Drilling Tools for CFRP/Titanium Alloy Laminated Structures
摘要
Abstract
Titanium alloy and carbon fiber reinforced plastic (CFRP) are both wildly used in aerospace industries.The hole-making process for titanium alloy/composite materials laminated structure has higher requirements for the drilling tools.In this paper,two different "changed point angle" drill bits were used to investigate the effect of the point angle on the cutting force and quality of holes.The results show that S-L type drill (the point angle change from small to large) presents the higher axial cutting force and poor quality in hole exit,but lower torque and higher dimensional accuracy.For the L-S type drill (the point angle change from large to small),it presents the higher drilling torque and bad machining quality of hole surface,but lower axial cutting force and burrs/tears in hole exit.Meanwhile,the L-S type drill can also provide better cylindrical form tolerance in CFRP layer.Therefore,L-S type drill has more advantages in drilling process of titanium alloy/CFRP laminated structure when CFRP layer is in the bottom of the stack.关键词
钛合金/复合材料/钻头结构/孔表面质量/钻孔Key words
titanium alloy/composite materials/structure of drill/hole's surface quality/drill hole分类
矿业与冶金引用本文复制引用
于书宇,秦旭达,李士鹏,吴强,刘振旺,张笑宇..CFRP/钛合金叠层构件钻孔刀具制孔质量对比研究[J].机械科学与技术,2017,36(11):1641-1645,5.基金项目
中国博士后科学基金项目(2015M580198)资助 （2015M580198）
