Machining Three Prongs on a Shaft

Abstract

Simple tool reduces set-up and machining time by more than 70 percent. Unorthodox tooling arrangement used to machine three prongs on end of specialpurpose wrench. Modified carbide-tipped spot-facing tool rotated at 1,400 to 1,600 revolutions per minute in small milling machine and applied to work piece, held with its corners in spaces of three-cornered collect.