Machine tool feed system is usually driven by ac servo motor ball screwfeed drive to achieve, to simplify the structure.
机床的进给系统通常是通过交流伺服电机驱动的驱动滚珠丝杠饲料，简化结构，实现。
2
Ball screw due to high movement efficiency, small heat, it can achieve high-speed feed (motion).
滚珠丝杠由于运动效率高、发热小，故可实现高速进给(运动)。
3
Ball screw using ball movement, so the starting torque is very small, does not appear sliding movement crawling phenomenon, so can ensure accurate micro feed.