CUTTER PLATE AND CUTTER TOOL Russian patent published in 2009 - IPC B23C5/10 B23C5/20 

FIELD: mechanics; instrumentation.

SUBSTANCE: indexable cutting insert is designed as component part of a milling cutter tool; it consists of two opposed butt-end surfaces, basically identical and rhomboid-shaped, and a peripheral side surface arranged between the butt-end surfaces perpendicular to the cutter plate midplane. The above peripheral side surface is composed of six side faces, the four main ones being basically flat and the two radial angular ones diametrically opposed to each other. Each angular side face is smoothly joined to the two main side faces it is positioned between. Each butt-end surface has two primary and two secondary cutting edges. The midplane is parallel to each flat butt-end section. To enable treatment of minor radius inside angles the cutter plate additionally has two auxiliary side surfaces, basically flat and diametrically opposed to each other. Each auxiliary side surface is positioned between two main side surfaces and designed to be 180° rotationally symmetric relative to the first, second and third symmetry axes. The first symmetry axis is positioned perpendicular to the flat butt-end sections coinciding with the through-hole axis; the second symmetry axis runs through the auxiliary side surfaces with the third symmetry axis running through the angular side faces.

EFFECT: improved operability and operational reliability.

7 cl, 6 dwg