ASSEMBLED TOOL Russian patent published in 2010 - IPC B23C5/26 

FIELD: mechanical engineering.

SUBSTANCE: assembled tool contains a cutting instrument and a mandrel having an axle and a body having a mounting protrusion on its front end and a cavity. The mounting protrusion has a peripheral surface coaxial to the mandrel axle. The cavity is limited by a wall coaxial to the mandrel axle. At least one part of the wall has at least one forward directed first slanted surface a centering element having a front end and a rear end. At least one peripheral part of the centering element has a forward directed second slanted surface. The cutting tool has a mounting hole limited by a wall coaxial to the cutting tool axle and a fixture screw having a fixture surface and a threaded part extending from the fixture surface. The assembled instrument is designed so that to enable regulation between the initial position wherein the mandrel and the cutting tool are separated from each other and the fixed position wherein the cutting tool is fixed so that to enable removal at the mandrel front end; the centering element is retained in the mandrel so that to enable removal. The first forward directed slanted surface comes in contact with the second forward directed slanted surface. At least part of the mounting protrusion surface comes in contact with at least part of the cutting instrument mounting hole. To reduce radial beating the centering element has a cavity limited by a wall at least partially covered with female thread. The cutting instrument is designed so that its fixture part limited by the forward directed surface is oriented along the axle. In the fixed position the wall of the fixture element is positioned coaxial to the mandrel axle. The fixture screw threaded part interacts with the centering element female thread while its fixture surface comes in contact with the above mentioned forward directed surface of the cutting tool.

EFFECT: invention is intended radial beating reduction.

11 cl, 7 dwg