FIELD: technological processes.
SUBSTANCE: invention relates to mechanical treatment, namely, to cartridges for manual drilling machines. The cartridge comprises a rotated receiving bushing with a hole for a tail of an insert tool. The inner side surface of the receiving bushing has at least six flat sections arranged along the perimetre. Flat sections that are adjacent along the perimetre form an angle of 120° between each other. The inner side surface of the receiving bushing limits at least one drive slot parallel to the axis of rotation of the receiving bushing for a tail with round cross section and at least one protruding drive rib.
EFFECT: reduced costs, lower number of cartridge slots, and also simplified replacement of insert tools.
11 cl, 11 dwg
