直驱式A/C轴双摆角铣头模态分析

Modal Analysis about Direct-drive A/C Bi-rotary Milling Head

用有限元方法计算了直驱式A/C轴双摆角铣头的振动特性,给出铣头结构的前4阶振型,研究了A轴摆角对铣头结构固有频率的影响。铣头在工作中其固有频率为区间值,1阶固有频率(120.48,122.91),2阶固有频率(139.68,142.08),3阶固有频率(328.68,331.9),4阶固有频率(369.68,372.45)。该计算为该类型铣头的设计和改进提供技术支持。

Vibration characteristic of direct drive A/C birotary milling head is analyzed by finite element method（FEM）,former four order vibration mode of the milling＇s structure is given,influences to natural frequency of the milling＇s structure which comes from swing angle of the A-axis is studied.The natural frequencies when the milling head is working are interval values,the first order natural frequency is（120.48,122.91）,the second order natural frequency is（139.68,142.08）,the third order natural frequency is（328.68,331.9）,the fourth natural frequency is（369.68,372.45）.This colculation provides technological support for design and improvement of this type of milling head.