Thread-Milling Machine

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a metalcutting machine designed to cut external and internal thread by means of a thread cutter. The blank and thread cutter perform several motions as the thread is formed on a thread-milling machine. The thread cutter rotates about its axis (principal motion); the blank slowly rotates (circular feed); the blank or thread cutter moves longitudinally (traverse feed, which is equal to the pitch of the thread being cut per rotation of the blank); and the thread cutter penetrates to the depth of the thread (radial feed).

Semiautomatic and automatic thread-milling machines cut external and internal threads with a coarse screw pitch over a considerable distance by means of face and side cutters. They are also used to cut threads with a fine screw pitch over a short distance by means of hobbing cutters, the screw pitch equaling the pitch of the thread being cut during 1.25–1.5 rotations of the blank.

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No references found			Holroyd dates back to the 1860s around the knitting mills of Manchester and has been making thread-milling machines at its present site for 110 years, adapting them for screw-type helical rotors in the 1960s. Renold sells machine tool division by Metalworking Insiders' Report			thrasher thrashing Thraso Thrasybulus Thraupidae Thread thread blight Thread Chaser thread contour thread count thread cross thread cutter thread escutcheon Thread Gage Thread Language Zero thread plug thread plug gage thread protector thread rating thread ring gage thread waste Thread, Flexible Thread, Screw Thread-Grinding Machine thread-lace scoria Thread-Milling Machine Thread-Rolling Machine, Automatic Thread-Rolling Tool thread-safe Thread-Working Machine threaded threaded anchorage threaded code threaded connector threaded discussion Threaded Joint threadfin Threading Threading Die Threading Head threading machine Threading Tool Threadneedle Street threadworm Threat threat and risk assessment threat collision avoidance system threat management three Three Arch Rocks National Wildlife Refuge three blind mice			thread ring gage thread rolling Thread Safe Resource Manager Thread Safe Template Library Thread safety Thread Scope PIurrent Thread snake Thread snake Thread snakes Thread snakes thread the needle thread through thread vein thread veins thread waste thread way through Thread Without A Reason Thread, Flexible Thread, Screw Thread, Screw Thread-and-Streak Sign Thread-Based Composite System thread-fish Thread-Grinding Machine thread-lace scoria Thread-level parallelism thread-like thread-like thread-like Thread-Milling Machine Thread-Rolling Machine, Automatic Thread-Rolling Tool Thread-safe Thread-shaped Thread-Specific Data Thread-Working Machine Thread/Threads threadbare threadbare threadbare phrase Threadbareness threaded threaded threaded threaded Threaded & Coupled Threaded Adelson - Velskii - Landis Threaded Algebraic Space-Time threaded anchorage Threaded Blind Insert threaded blockset aligner Threaded Both Ends Threaded Case Study Threaded code Threaded code compiler Threaded connector Threaded discussion threaded implant threaded implant threaded implant

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