摘要
针对高速刀柄与主轴锥孔离心膨胀不匹配的问题,设计了一种新型高速刀柄。刀柄采用实心短锥、双面定位结构。刀柄上安装有离心力驱动液压弹性膨胀系统,用以补偿刀柄与主轴锥孔的离心膨胀差。阐述了新型高速刀柄的结构原理,对刀柄几何参数和配合过盈量进行了设计;利用ANSYS有限元软件分析了刀柄的极限转速及与主轴的径向连接刚度。研究结果表明,新型刀柄与同规格的HSK高速刀柄相比,极限转速提高了约38%,且径向连接刚度也有所提高,适合用于高速加工。
Against the centrifugal expansion mismatch of high-speed tool holder and taper hole of the spindle,a new type of high-speed tool holder was designed.It had the structure of short solid taper -shank and double-sided positioning.A hydraulic elastic expansion system driven by centrifugal force was installed on the tool holder so as to compensate difference of the centrifugal expansions. The structure principle of tool holder was introduced herein. The geometrical parameters and interference were designed.The limit rotate speed and connection stiffness were analyzed by use of ANSYS.The re- search results prove that the limit rotate speed of new type of tool holder is 38% higher than that of the same specification HSK tool holder,and the radial connection stiffness is also improved to some extents, so this new type of tool holder is suitable to high speed machining.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2015年第21期2941-2945,2962,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目重点项目(51335007)
河北省自然科学基金资助项目(E2014203097)
关键词
高速刀柄
离心力
极限转速
连接刚度
有限元方法
high-speed tool holder
centrifugal force
limit rotate speed
connection stiffness
finite element method（FEM）
