Unit One Vocab C-E Flashcards
CAD Drawing
A drawing using a computer-aided drafting methods
CAM
A mechanical device used to change rotary motion to some other motion such as reciprocating or sliding.
Carburize “Carb”
Heating low-carbon steel to a temperature below its melting point. In carbonaceous solids, liquids, or gases, to raise the level of carbon in the exterior, then slowly in preparation for heat-treating.
Case Hardening
To harden ferrous alloy so that the surface layer is harder than the interior core.
Casting
A metal object made by pouring molten metal into a mold.
Chain Dimensioning
Successive dimensions that extend from one feature to another, rather than each originating at a datum
Tolerances accumulate with chain dimensions.
Chamfer
A corner that has been removed from the end of a cylindrical surface, at an angle to the face.
Used to facilitate assembly.
Clearance Hole
A hole slightly larger than the bolt or fastener that is intended to pass through it.
Coaxiality
Exists when two or more cylindrical features have a common axis.
Collar
A projecting ring around a shaft.
Concentrically
The condition where the median points of a features diametrically opposed elements are located within a cylindrical zone that is equally centered about a datum axis.
Core
The part of a mold that shapes the interior of a casting.
Counterbore
To enlarge a hole cylindrically at the end. A drawing specification will include its diameter and depth.
Countersink
To enlarge a hole conically at the end to accept a flat-headed fastener.
Drawing included diameter and depth.
Datum
A point, line, surface or plane from which the location of other features is established.
Degree
A unit of angular measurement (360 degrees in circles)
Detail Drawing
A drawing of a single object complete with dimensions and all other information necessary to produce the part.
Die
A tool used to cut external threads. Also a tool used to shape, mold, stamp or cut metal.
Die Casting
A metal object produced by injecting molten material into metal dies under pressure.
Draft
The angle provided on a pattern or mold that enables the pattern or molded part to be easily withdrawn from the mold.
Eccentric
A term means off center, doesn’t share a common axis like concentric.
Extrusion
A metal object made by forcing hot or cold material through dies of the desired shape.
