双刀车削细长轴振动特性分析

Vibration property analysis on dual-tool cutting for slender shafts

为了提高细长轴的表面加工质量,提出对称式双刀车削的加工方法.首先通过理论分析求解单刀车削和对称式双刀车削的振动响应方程,然后利用有限元软件ANSYS,分别对单刀和对称式双刀车削进行谐响应分析,得出各个节点的谐响应曲线.对比不同节点位置的谐响应曲线,得出对称式双刀车削比单刀车削振动要小.分析结果表明:对称式双刀车削可以大幅度提高细长轴的表面质量和加工精度.

To improve the machining surface quality of slender shafts,a symmetrical dual-tool turning method is proposed.Firstly,the vibration response equations of single-and dual-tool turning are theoretically resolved.Then,the resonant response analysis is conducted using ANSYSTM to obtain the nodal resonant response curves.In comparison with different resonant response curves,the vibration from dual-tool turning is relatively lower.Therefore,the symmetrical dual-tool turning can significantly enhance the machining quality and precision for slender shaft surface.