FIELD: material processing.
SUBSTANCE: invention relates to material processing by cutting and can be used to connect an annular saw with a driven tool. Annular saw contains a bottom wall with an internal thread hole with larger and smaller thread diameters. The mandrel contains a clamping mechanism with first and second threading parts, which are made with the possibility of moving relative to each other in a direction perpendicular to the longitudinal direction, allowing mentioned first and second threading parts to move between the first disengaged position and the second engaged position. In this case, in mentioned second position, mentioned first and second outer surfaces engage an internal thread to clamp mentioned clamping mechanism in said opening.
EFFECT: effective connection and disconnection of the annular saw, in particular connection and disconnection with a mandrel for connection to a drive tool.
11 cl, 10 dwg
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