austempering
Heat-treatment for ferrous alloys in which a part is quenched from the austenitizing temperature at a rate fast enough to avoid formation o…
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Glossary Terms
austenite
Solid solution of one or more elements in face-centered cubic iron. Unless otherwise designated (such as nickel austenite), the solute is g…
austenitizing
Heating an alloy above its transformation temperature and then quenching it in a salt bath or other medium that extracts the heat at a suff…
automatic bar machine
Machine for turning bar stock. Similar to an automatic chucking machine, except that stock size is limited to through-the-spindle capacity …
automatic chucking machine
Machine with multiple chucks and toolholding spindles that permits processing of several parts simultaneously or multiple machining steps i…
automatic screw machine
Turning machine designed to produce parts automatically from coil or bar stock. The two basic types are cam (mechanical) and programmable (…
automatic toolchanger
Mechanism typically included in a machining center that, on the appropriate command, removes one cutting tool from the spindle nose and rep…
automation
Approach under which all or part of a machining or manufacturing process is accomplished by setting in motion a sequence that completes the…
abrasive waterjet (AWJ)
System that uses high-pressure waterjets in combination with a slurry of fine abrasive grains to machine materials. See waterjet cutting.
axial force
When drilling, a force that is directed axially—along the direction of machining. The magnitude of an axial force rises with the drill’s di…
axial rake
On angular tool flutes, the angle between the tooth face and the axial plane through the tool point.
axis
Joint, rotational, directional or transversal movement of which the robot is capable. See degrees of freedom.