摘要
钛合金具有密度小、力学性能优良、耐腐蚀等优点,被越来越多的应用在现代新型运输机及客机的机体结构及发动机上。但钛合金也同时存在难切削、加工效率低、加工过程中应力变形大、加工精度难以保证等缺点,传统的加工方法已无法满足飞机工业对钛合金结构件的需求。为此,对可适用于加工飞机用钛合金结构件的高效精密加工技术进行了概述,指出通过采用小切深、大进给的高速铣削技术,大切深、小进给的强力切削技术以及插铣粗加工技术可以提高钛合金结构件的加工效率;在制造钛合金悬臂梁结构件及加工结构件上的定位孔时,采用高效精密加工技术可以提高结构件型面及孔的精度,从而提高产品质量,缩短加工周期,降低飞机制造成本。
Titanium alloy has been more and more applied in airframe and engine of new transport and passenger planes, for its strong points of low density, excellent mechanical property and corrosion resistance. But it is difficult to be machined into structural components by traditional machining methods. There are some problems for processing titanium alloy structural components, such as hard to cut, low machining efficiency, large stress deformation and hard to ensure machining accuracy. So the high precision machining technologies which can be used for processing titanium alloy structural components have been summarized. It is pointed out that small cutting depth and roughing feed technology, large cutting depth and small feed technology, plunge milling technology can all improve the machining efficiency of titanium alloy structure components. Besides, by high efficiency precision machining technologies, the accuracy of molded surface and hole can be improved, and manufacturing can also be reduced. the processing cycle can be shorten, the cost of aircraft
出处
《钛工业进展》
北大核心
2015年第3期35-38,共4页
Titanium Industry Progress
基金
"高档数控机床与基础装备制造"科技重大专项课题资助项目(2013ZX04001-021)
关键词
飞机
钛合金
结构件
高效精密加工技术
aircraft
titanium alloy
structure component
high precision machining technology
