View your list of saved words. (You can log in using Facebook.)
Machine tool for producing holes in hard substances. The drill is held in a rotating spindle and is fed into the workpiece, which is usually clamped in a vise supported on a table. The drill may be gripped in a chuck with three jaws that move radially in unison, or it may have a tapered shank that fits into a tapered hole in the spindle. Means are provided for varying the spindle speed and (on some machines) for automatically feeding the drill into the workpiece. See alsoboring machine.
Variants of DRILL PRESS
drill press or drilling machine
This entry comes from Encyclopædia Britannica Concise. For the full entry on drill press, visit Britannica.com.