Blueprint Reading Flashcards
(99 cards)
Define “CAD Drawing”
A drawing made by computer-aided methods
Define “Reference Dimension”
A dimension used only for information, not for production or inspection
Define “Quenching”
The Cooling of metals rapidly by immersing them in a liquid
Define “Extension Spring”
A spring designed to supply force when pulled end to end
Define “Datum”
A point, line, plane or surface where other features are located
Define “Face”
A flat surface perpendicular to the axis, such as the end of a shaft
Define “Flange”
A projecting rim or collar used to attach to another object
Define “Clearance Hole”
A hole slightly larger than the fastener intended to pass through it
Define “Pinion”
The smaller of two mating gears
Define “Shim”
A thin piece of metal inserted between two parts to adjust the fit
Define “Arbor”
A shaft or spindle for holding the cutting tool or workpiece
Define “Gauge”
The thickness of sheet metal by a number rather than a dimension
Define “Tangent”
A line drawn to an arc that contacts the arc at one point only, without crossing
Define “Perpendicular”
Two lines or planes that are at right angles to one another
Define “Parallel”
Two lines equidistant from each other, extending in the same direction
Define “Tap”
A tool used for cutting internal threads in a hole
Define “Bilateral”
The term that means two sides are involved
Define “Radii”
The plural of “Radius”
Define “Broach”
A machining operation that uses a toothed cutting tool to produce shapes inside of a hole, such as a keyway.
Define “Spotface”
A machining operation that produces a round, flat spot around a hole.
What does SF stand for?
Spotface
Define “Counterbore”
A machining operation that enlarges the end of a hole cylindrically to a specified diameter and depth
Define “Countersink”
A machining operation that produces a cone-shaped end to a hole, usually to accept a flat-head fastener
Define “Tolerance”
The permissible variation from a specified dimension
