两种主轴箱平衡系统导向机构在数控落地铣镗床中的应用分析

Two type of guiding mechanism for headstock balancing system in CNC floor- type milling-boring machine

数控落地式铣镗床主轴箱平衡系统是通过安装在配重重锤上的滚轮与固定在立柱内腔的导向杠形成的运动副来实现重锤沿导向杠的上下运动。滚轮与导向杠轨道的接触方式有弧线接触和线接触两种,文章主要分析弧线接触和线接触两种主轴箱平衡系统导向机构在重型数控落地铣镗床中的应用。

The headstock balancing system of CNC floor- type milling- boring machine is through that the rollers mounted on counterbalance and the guide bars mounted on column cavity compose the motion pair,so the counterbalance can move along the guide bars up and down. There are two types of contacting ways between rollers and guide bars: arc contact and line contact. The paper analyzes that arc contact and line contact applying in CNC floor- type milling- boring machine.