Die Threading

Die threading is a machining process that uses a cluster of multipoint cutting tools (chasers) to produce uniform helical threads on the external surface of a cylinder.  The chasers move parallel to the axis of the workpiece.  When the cutting is finished, the chasers automatically retract, permitting return of the head without reversing the spindle.

Process Characteristics

Uses a cluster of four multipoint chasers
Produces helical threads on the external surface of cylindrical workpieces
Has automatic retraction of chasers upon thread completion
Produces chips that fall out upon chaser retraction
Requires axial chaser feed to match thread lead
Is used for production threading

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Information provided is from Manufacturing Processes Reference Guide by Robert H. Todd, Dell K. Allen, and Leo Alting.--1st ed. Published by Industrial Press Inc., 1994.