HOBBING CUTTER FOR CUTTING TOOTHED PARTS Russian patent published in 2011 - IPC B23F21/16 

FIELD: process engineering.

SUBSTANCE: proposed hobbing cutter comprises two units with pitch cones with crests facing each other and aligned with cutter rotational axis. Cutting teeth are made on said pitch cones with pitch along generating lines on said cone equal to pitch of gear wheel being cut, while profile of each unit corresponds to initial outline of the rack. Half the angle of butter pitch cone is selected in compliance with given relationship.

EFFECT: higher efficiency and durability.

1 dwg