screw-feed stoker 螺旋式机械加煤机 ; 螺旋加煤炉排
screw-feed drill 螺旋钻机
screw-feed diamond rig 螺旋给料式金刚石钻机
screw-feed diamond drill 螺旋给料式金刚石钻机
screw-feed pump 螺旋喂送泵
screw feed stoker 螺旋进给式加煤机
feed screw 进给螺杆 ; 进料螺杆 ; 螺旋送料机 ; 进给丝杆
short screw-feed boring 短螺旋钻孔
Machine tool feed system is usually driven by ac servo motor ball screw feed 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。
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)。
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.
滚珠丝杠利用的是滚珠运动，因此启动力矩极小，不会出现滑动运动那样的爬行现象，故而能保证实现精确的微进给。
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