FIELD: mining.
SUBSTANCE: tool auger connection comprises a coupling (1) and a nipple (3) made with a cylindrical thread (5) and threaded stops in the form of cooperating teeth (6), the working surface (7) of which is located in plane of the coupling axis (1) and nipple (3). The teeth (6) are made on initial turns of the cylindrical thread (5) of the coupling (1) and nipple (3). The back (8) of teeth (6) is perpendicular to the coupling axis (1) and nipple (3), and of teeth height (6) is 1/3 of the thread pitch (5).
EFFECT: reduced labor input for manufacture of threaded stops for auger tool joint.
2 dwg
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