Unit 8 Vocabulary

A group of machined or handmade parts that fit together to form a self-contained unit.

• Area

• Axis

• Center Line

• assembly

Creating a 3D solid or surface by revolving a 2D shape about an axis.

• Revolution

• Tangent

• Fillet

• Origin

An inside radius between two intersecting planes.

• Origin

• Countersink

• Fillet

• Tangent

A fixed point from which coordinates are measured.

• Fillet

• Origin

• Plane

• Center Line

A location in space.

• Counterbore

• Countersink

• Point

• Tangent

A flat surface on which a straight line joining any two points would wholly lie

• Point

• Tap

• Revolution

• Plane

To cut internal threads.

• Tap

• Counterbore

• Countersink

• Radius

A straight line from the center to the circumference of a circle or sphere.

• Balloon

• Radius

• Axis

• Exploded Assembly

A conical-shaped recess around a hole, often used to receive a tapered screw.

• Tap

• Counterbore

• Countersink

• Tangent

An imaginary line through a body, about which it rotates.

• Origin

• Axis

• Balloon

• Plane