直驱式A/C轴双摆角铣头C轴结构单元有限元分析

Finite Element Analysis About C Part of Direct-drive A/C Bi-Rotary Milling Head

直驱式大功率A/C轴双摆角铣头中C轴采用两个力矩电机并联的方式来传递扭矩,因此C轴长度较大,其传动件承受较大的扭矩。用有限元方法分析了C轴转动时传动件的扭转变形,以及C轴锁紧时壳体的径向变形和扭转变形。发现隔套是C轴扭转刚度最薄弱的环节,要提高C轴传动部件的扭转刚度,可根据结构设计缩短隔套长度或增加其外径。该计算可以为该类型铣头的设计和改进提供技术支持。

In a direct-drive high-power A/C-axis bi-rotary milling head,torque is transferred by two parallel connected rotary direct drive motors in C-axis, therefore, the length of the transmission components in C parts are considerably large, and they are borne high torque. The torsion deformation of the transmission compo- nents of C parts when C-axis is rotating is analyzed using finite element method, the racial deformation and the torsion deformation of the case when C-axis is locking is analyzed either. The connecting sleeve is weekest in torsional stiffness. In order to improve the torsion stiffness of the transmission components of C-axis, the sleeve can be shorten and its extend diameter can be increased according to the structure design. This computing can provide support for the design and improvement of this type of milling head.