FIELD: process engineering.
SUBSTANCE: proposed head comprises body with its groove accommodating two-blade threading plate fixed therein. Said plate is arranged coaxially with the groove cut for width of said threading two-blade plate and having rectangular shape with additional cutout sectors. Note here that centers of said sectors are aligned with points of intersection of inclined and straight lateral sides of threading plate and have their flat surfaces perpendicular to each other. One of said surfaces is parallel with slot generatrix. Note also that two-blade cutting plate is clamped by disk hold-down tool that has three ledges on one of its faces, two of them having their shape mating that of recesses formed by inclined faces of said plate and cutout sectors. Third ledge features the shape of cylinder truncated on two sides and having through bore to receive screw with smooth cylindrical base surface.
EFFECT: expanded performances, higher accuracy of milling.
7 dwg
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