Exam 4: Turning

____ is the distance that a point on the circumference of a rotating cutting tool travels in 1 minute.

When the desired hole is larger than 1/2" in diameter, a smaller hole called a ____ is often drilled before the larger drill bit is used.

A relative measure of how easily a material can be machined is called its ____.

The ____ is a thin raised strip that runs the length of the drill body along the edge of the flutes and gives the drill bit its diameter.

The ____ is most often used when a hole is to be drilled perpendicular to a large flat surface on the workpiece.

The ____ is the cone-shaped area at the very tip of the drill bit.

The drill ____ extends from the tip to the beginning of the shank and makes up the majority of the drill bit.

A ____ drill press contains multiple drilling heads attached to a single base and worktable.

A counterbore has a guide on its end called a(n) ____ that keeps the counterbore aligned in the existing hole.

The ____ does no actual cutting but is instead forced into the material when drilling.

The alternating drilling and retracting motion of a quill to clear chips from the point is called ____.

The ____ is the area just behind the margin and is slightly smaller in diameter assuring that it does not rub on the walls of the hole during drilling.

Holes that are drilled entirely through a workpiece are called ____.

Holes that are only drilled partially through a workpiece are called ____.

A ____ is sometimes used to position the workpiece under the center of the drill press spindle.

A ____ head is a specially designed tool that allows the spindle to be run to drive taps.

To remove a taper-shank tool from the drill press spindle, a wedge-shaped ____ is inserted between the tapers through an opening in the spindle and lightly tapped with a hammer.

The ____ taper is a popular standardized style of taper used in drill press spindles and for holemaking tools.

After the workpiece is positioned and securely clamped, a center drill is usually used to create a more positive starting point for a twist drill. This operation is sometimes called ____.

The ____ is the part of the drill press that holds and rotates the cutting tool.