CUTTING PLATE AND INDEXING ROTARY CUTTING TOOL Russian patent published in 2016 - IPC B23C5/20 

FIELD: metalworking.

SUBSTANCE: cutting plate is intended for milling 90° ledge and comprises first and second end sufaces, peripheral side surface between them and cutting edge formed at the section of crest intersection between the first end surface and peripheral side surface. Cutting edge is formed so that the first end surface performs the function of the front surface, and a part of the peripheral side surface performs the function of the back surface. Section of side surface relating to the peripheral side surface is adjacent at least part of the cutting edge, includes the first section of rear surface and is adjoining to cutting edge, the second section of rear surface, the third section (20) of rear surface and the fourth section of rear surface in this order from the side of the first end surface to the side of the second end surface.

EFFECT: as a result - higher vibration resistance due to reduction of self-oscillations.

9 cl, 11 dwg