THREAD CUTTING METHOD Russian patent published in 2003 - IPC

FIELD: technological processes in machine engineering, namely thread cutting by means of hobbing cutter forming screw pair with blank. SUBSTANCE: method comprises steps of placing axis of blank and axis of hobbing cutter in the same plane; shifting contact point of centroids of screw pair relative to engagement pole of hobbing cutter and blank; imparting to hobbing cutter radial and axial feed motions in order to eliminate dependence of length of portion to be thread cut from width of hobbing cutter. Axial feed motion of hobbing cutter is kinematically connected with its revolution numbers, namely one revolution of hobbing cutter corresponds to its axial motion by stroke value along helical line of cut thread. EFFECT: enhanced efficiency of method. 2 dwg