Probably the first power machine that every machinist runs is the drilling machine or drill press. Sometimes it is simply called the drill, although this term usually refers to the small drill that actually does the work.
The different parts of all drilling machines have practically the same names, so that by becoming familiar with the parts of one type, the student will have learned the essential features of all. The drilling machine consists of a revolving spindle carrying a socket for holding the tool, a table for supporting or holding the work, and an arrangement for feeding the tool into the work either by hand or power. Different speeds for running the drill in different kinds of metal are provided for by cone pulleys and back gears, the back gears giving the slower speeds.
In all drilling machines the work is held stationary while the tool turns. This order is reversed in the action of a lathe, where the work turns and the tool remains stationary.