METHOD OF CUTTING THREADS ON PARTS OF OIL PUMPS

摘要

FIELD: metal working. SUBSTANCE: method comprises controlling cross-feed and axial feed of a thread-cutting tool. In so doing, the tool is oriented in the direction of its cross-feed to perform each subsequent stroke at the initial position that is shifted by a value inversely proportional to the number of strokes reduced by the value of the radial pressing out of the tool when the threading is steady-state. During the first turn the cross-feed of the tool is then gradually increased by the value of increased radial pressing out of the tool. During the second turn the cross-feed of the tool is gradually decreased by the value of the radial pressing out of the tool. EFFECT: simplified method.