COMBINATION TYPE HEAD FOR TURNING OUTER SPHERICAL SURFACES Russian patent published in 2006 - IPC B23B5/40 B23C3/04 

FIELD: working materials by cutting, cutting tools.

SUBSTANCE: head includes two cutter heads kinematically connected one with other and having at least two similar cutters. One cutter head is adjusted for preliminary rough working and other cutter head is adjusted for finish working at axial feed. Cutter heads are arranged one opposite to other by inclination angle (determined according to given formula) relative to plane normal to blank axis and passing through center of worked spherical surface. Paths of rotation of head cutter apexes have common point arranged in lengthwise axis of blank. Heads may be rotated from one drive unit at the same revolution number for timing motion of cutters due to successive alternative passing of said common point by cutters of rough and finish heads.

EFFECT: enhanced efficiency of turning high quality and high accuracy spherical surfaces.

2 dwg