Means are provided for varying the spindle speed and (on some machines) for automatically feeding the drill into the workpiece.
另有各种装备可改变转轴速度及使钻头自动钻入工作件中。
2
The shank is the end of the drill which fits into the socket, spindle, or chuck of the drill press.
柄是钻头末端和钻套、主轴或者钻床上的卡盘相配合。
3
This article probes into the process step, method and the disposal of some other basic problems of a computer-aided design for multiple spindledrill unit, which is easy to use and popularize.