The Conditions of Undercut By Shaping Using a Rounded Profile Gear Shaper Cutter

Abstract The present paper deals with the cases of undercut when not only linear but curved segment generatrix curve is also taken in consideration. literature admits approximation root fillet a circular arc radius 0,38 m. In this paper, instead approximation, real envelope realized by rounded rack-head computed. analyzing there are two classical synthetic geometrical models supporting Litvin’s general equations that describe condition avoiding undercut: one for and part generatrix. scope exact computing consists optimizing cutting toll tooth topland geometry to obtain best rigidity. numerically evaluated allow us conclude profile shifting can be pushed below limits stated literature, without appearance well-known fracture point on meshed profile.