基于分屑原理的螺旋铣孔专用刀具研究  

Research on Helical Milling Specialized Tool Based on Chip-splitting Principle

作　　者：刘刚[1] 王亚飞[1] 张恒[1] 高凯晔 柯映林[1] 段作衡[2] 

机构地区：[1]浙江大学机械工程学系,杭州310027 [2]成都飞机工业(集团)有限责任公司,成都610092

出　　处：《机械工程学报》2014年第9期176-184,共9页Journal of Mechanical Engineering

基　　金：中央高校基本科研业务费专项资金(2004FZA4004);成飞国防军工司科技(13)-061资助项目

摘　　要：基于分屑原理,结合螺旋铣孔中刀具的运动特点,设计一种具有分布式多点阵端部切削刃的螺旋铣孔专用刀具。通过各切削刃运动轨迹描述和切屑形状模拟,对专用刀具的分屑效果、端部和侧部切削刃不同切削作用及刀具使用寿命进行分析;通过铝合金、钛合金、复合材料螺旋铣孔对比试验寿命试验,对专用刀具的分屑及制孔效果、使用寿命进行验证。结果表明专用刀具在飞机装配现场干切削条件下能够实现钛合金孔无毛刺、复材孔无分层加工,同时大幅提升刀具寿命。解决了干切削条件下传统立铣刀对钛合金、复合材料等航空难加工材料进行螺旋铣孔加工时刀具寿命低、加工质量差等问题,满足实际工程应用的需要。Based on chip-splitting principle and tool＇s movement feature,a new specialized tool for helical milling with distributed multi-point front cutting edge is designed.The description of each cutting edge＇s movement track and simulation of chip shape are used to analyze the chip-splitting result,the different function of front and peripheral cutting edges and the specialized tool＇s service life.The helical milling contrast and life experiment of aluminum alloy,titanium alloy and carbon fiber reinforce plastic （CFRP） are used to testify the chip-splitting result,the hole quality and the service life of the specialized tool.Results show that the specialized tool can machine titanium holes without burr and CFRP holes without delimitation under dry cut condition during domestic aircraft assembly and the specialized tool＇s service life prolongs.The problems of poor hole quality and short tool service life when helical milling of aeronautical hard-machining materials such as CFRP and titanium alloy with end mill under dry cut condition is solved and the requirement of the engineering application is met.

关 键 词：分屑 螺旋铣孔 多点阵端部切削刃 专用刀具 立铣刀 干切削 

分 类 号：TG161[金属学及工艺—热处理]