METHOD OF PRODUCING SELF-LOCKING THREAD Russian patent published in 2016 - IPC B23G1/32 F16B39/30 

FIELD: machine building.

SUBSTANCE: method includes matching of mill axis with axis of workpiece opening, setting of milling cutter rotation and radial feed to cutting depth with simultaneous planetary motion of workpiece opening axis on two coordinates, and longitudinal feed of milling cutter, threading and removal of milling cutter from workpiece. To increase locking properties of produced threaded joints single-cut thread cutter is used, and longitudinal feed is performed with superimposition of periodic axial or radial oscillations on milling cutter with amplitude equal to clearance in thread and frequency of 3-4 oscillations per one planetary rotation axis.

EFFECT: number of periodic axial or radial oscillations can be changed according to hole thread length.

2 cl, 2 dwg