BEAM-AND-CHANNEL SHEARS Russian patent published in 1998 - IPC

FIELD: blanking shops of various branches of industry. SUBSTANCE: general articulated joint of levers 19, 21, 22 of three-lever groups of drive of upper clip of shears is implemented with the aid of eccentric shaft. Value of eccentricity of eccentric shaft is not in excess of radii of friction circles of locations of levers 21, 22 coupled correspondingly to frame and clip 23. Eccentric shaft is made fast to lever 19 coupled to rod 18 of cam drive 15. EFFECT: enhanced quality of cutting thanks to usage of reliable clip without dependence on variations of dimensions of cross-sections of profiles. 3 dwg