A tool for metalworking that starts chips as part thereof

摘要

A tool for metalworking that starts chips, comprising a first part (1) and a segundapieza (2) oriented along a common center axis (C), and a threaded joint that connects so separablelas first and second parts (1 , 2) together, including the threaded connection of a female thread (11) arranged in unaboca a recess (12) in the first part (1) space, and a male thread (10) arranged at a free end deuna male plug ( 9) in the second part (2), conical each thread (10, 11) and including a ridge helicoidalque has a profile shape that is defined by a top (21; 21a) and two flanks (22, 23; 22nd , 23a), which delimit a helicoidal groove (24; 24a) like having a bottom (25; 25a), a first flank (22) of the crestade the male thread (10) facing away from the free end (9a) of the pin (9) and a first flank (22a) of the female thread lacresta (11) facing away from the mouth of the hollow space (12) are pre sioned entresí during screwing of the pin (9) in the cavity (12), and a second flank (23) of the crest roscamacho (10) which faces the free end (9a) of the plug (9 ) and a second flank (23a) of the crest larosca female (11) which faces the mouth are pressed together during the unscrewing of the clavijafuera the cavity, wherein the male pin (9) of the second part (2) comprises external surfaces deguía (16, 18) first and second, rotationally symmetric, axially disposed front and detrásrespectivamente of the male thread (10) and the cavity (12) of the stem comprises internal surfaces deguía (17, 19 ) first and second, rotationally symmetrical, arranged front and rear, respectively, of larosca female (11) cooperatively engaging the first outer guide surface (16) with the internal primerasuperficie guide (17) and cooperatively engaging the second surface external guide (18) with lasegunda internal guide surface (19), characterized in that the first walls (22; 22a) of the ridges of male lasroscas and female (10, 11) are inclined relative to the central axis (C) at a first angle (α) that esmenor a second angle (α) with which the second flanks are inclined (23; 23a) in relation to the ejecentral (C), and that the diameter of the first outer guide surface (16) is slightly larger than eldiámetro first inner guide surface (17) so that an adjustment is provided you entreambas pressure.