ABSTRACT
Drilling is a hole-making machining operation accomplished using a drilling tool. Figure 1.1a shows a common drilling arrangement in a drilling machine. The workpiece is clamped on the machine table with a vice equipped with jaws that clamp against the workpiece, holding it secure. The drill is clamped in the machine spindle that provides the rotation and the feed motions. Figure 1.1b shows a common drilling arrangement on a lathe. The workpiece is clamped in a self-centering three-jaw lathe chuck installed on the machine spindle that provides rotation and the tool is installed on the tailstock engaged with the lathe carriage that provides the feed motion.
