CUTTING PLATE AND CUTTING TOOL Russian patent published in 2014 - IPC B23B27/16 B23C5/20 B23D77/00 

FIELD: machine building.

SUBSTANCE: cutting plate with a through hole having a side surface is designed for the installation and fixation in a cutting tool socket, is limited by the identical upper and lower surfaces in the form of a polygon or a circle and by a side surface set between them. The cutting plate has a rotation symmetry axis passing through the centres of symmetry of the upper and lower surfaces and coinciding with the through hole axis. The side surface of the through hole is fitted by recesses each of which is confined by cylindrical surface and at least one conical surface or convex surface of rotation; at each recess the axes of the cylindrical surface and of at least one conical surface or convex surface of rotation coincide and are set parallel to the through hole axis. A cutting tool comprises a case with at least one socket where the cutting plate is installed and fixed with the help of a fastening screw fitted by a head. The socket is fitted by a lower backup wall and three side backup walls meant for setting inside the through hole of the cutting plate; one of the side walls is intended for the interaction with the fastening screw head, the second one - with the conical surface or convex surface of rotation of one of the said cutting plate's recesses, and the third one - with the cylindrical surface of the other recess.

EFFECT: higher processing efficiency.

4 cl, 8 dwg