tracer attachment
Used to duplicate a workpiece. A stylus connected to a servo traces a template or sample workpiece. The attachment directs the movements of…
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Glossary Terms
tramp oil
Oil that is present in a metalworking fluid mix that is not from the product concentrate. The usual sources are machine tool lubrication sy…
transformation range
Temperature range in which austenite forms as a tool is heated and disappears as the tool cools. This range is critical and must be known i…
trepanning
Drilling deep holes that are too large to be drilled by high-pressure coolant drills or gundrills. Trepanning generates a solid core and no…
truing
Using a diamond or other dressing tool to ensure that a grinding wheel is round and concentric and will not vibrate at required speeds. Wei…
T-slot cutter
Milling cutter for machining T-slots. Desired T-slot shape is reverse of cutter shape.
tungsten carbide (WC)
Intermetallic compound consisting of equal parts, by atomic weight, of tungsten and carbon. Sometimes tungsten carbide is used in reference…
turning
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point …
turning machine
Any machine that rotates a workpiece while feeding a cutting tool into it. See lathe.
turret lathe
Differs from engine lathe in that the normal compound rest is replaced by pivoting, multitool turrets mounted on the cross slide and tailst…
turret ram mill
Variation of the vertical milling machine; has a movable ram mounted on a swivel base atop the column, providing positioning flexibility. S…
twist drill
Most common type of drill, having two or more cutting edges, and having helical grooves adjacent thereto for the passage of chips and for a…